WO2005085594A1 - Compositions and methods for controlling unconsolidated particulates - Google Patents
Compositions and methods for controlling unconsolidated particulates Download PDFInfo
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- WO2005085594A1 WO2005085594A1 PCT/GB2005/000636 GB2005000636W WO2005085594A1 WO 2005085594 A1 WO2005085594 A1 WO 2005085594A1 GB 2005000636 W GB2005000636 W GB 2005000636W WO 2005085594 A1 WO2005085594 A1 WO 2005085594A1
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- subterranean formation
- resin
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- liquid composition
- polymerizable organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
Definitions
- the present invention relates to the stabilization of subterranean formations. More particularly, the present invention relates to improved methods for stabilizing unconsolidated or weakly consolidated zones of a subterranean formation.
- Hydrocarbon wells are often located in subterranean zones that contain unconsolidated particulates that may migrate out of the subterranean formation with the oil, gas, water, and/or other fluids produced by the wells.
- the presence of particulates, such as formation sand, in produced fluids is undesirable in that the particulates may abrade pumping and other producing equipment and reduce the fluid production capabilities of the producing zones.
- Unconsolidated subterranean zones include those that contain loose particulates and those wherein the bonded particulates have insufficient bond strength to withstand the forces produced by the production of fluids through the zones.
- One method of controlling particulates in such unconsolidated subterranean zones has been to produce fluids from the formations at low flow rates, whereby the near well stability of sand bridges and the like may be substantially preserved.
- the collapse of such sand bridges may occur due to unintentionally high production rates and/or pressure cycling as may occur from repeated shut-ins and start ups of a well.
- the frequency of pressure cycling is very critical to the longevity of the near well formation, especially during the depletion stage of the well when the pore pressure of the formation has already been significantly reduced.
- Gravel packing involves placing a filtration bed containing gravel near the well bore in order to present a physical barrier to the transport of unconsolidated formation fines with the production of hydrocarbons.
- gravel packing operations involve the pumping and placement of a quantity of a desired particulate into an area adjacent to a well bore in an unconsolidated or weakly consolidated formation.
- Such packs may be time consuming and expensive to install.
- Weakly consolidated formations also have been treated by creating fractures in the formations and depositing proppant in the fractures wherein the proppant is consolidated within the fractures into hard, permeable masses using a resin or tackifying composition to reduce the migration of sand.
- frac pack operations
- Another method used to control particulates in unconsolidated formations involves consolidating unconsolidated subterranean producing zones into hard permeable masses by applying a resin followed by a spacer fluid and then a catalyst. Such methods may be problematic when, for example, an insufficient amount of spacer fluid is used between the application of the resin and the application of the external catalyst. In that case, the resin may come into contact with the external catalyst in the well bore itself rather than in the unconsolidated subterranean producing zone.
- the present invention relates to the stabilization of subterranean formations. More particularly, the present invention relates to improved methods for stabilizing unconsolidated or weakly consolidated zones of a subterranean formation.
- One embodiment of the present invention provides a method of stabilizing an unconsolidated or weakly consolidated subterranean formation comprising the steps of placing a gelable liquid composition into the subterranean formation; and, allowing the gelable liquid composition to convert into a gelled substance that at least partially stabilizes unconsolidated or weakly consolidated particles within the subterranean formation.
- Another embodiment of the present invention provides a method of stimulating production from an unconsolidated or weakly consolidated subterranean formation penetrated by a well bore comprising the steps of placing a gelable liquid composition into the subterranean formation; allowing the gelable liquid composition to form a gelled substance; creating at least one fracture in the subterranean formation that extends through the gelled substance, and into a zone of the subterranean formation; and depositing proppant into the fracture.
- Another embodiment of the present invention provides a method of stimulating production from an unconsolidated or weakly consolidated subterranean formation penetrated by a well bore comprising the steps of placing a gelable liquid composition into the subterranean formation, wherein the gelable liquid composition comprises a polyepoxide resin, a diluent, a flexibilizer additive, and a resin curing agent; allowing the gelable liquid composition to form a gelled substance; creating at least one fracture in the subterranean formation extending through the gelled substance and into a zone of the subterranean formation; and depositing proppant into the fracture.
- the gelable liquid composition comprises a polyepoxide resin, a diluent, a flexibilizer additive, and a resin curing agent
- the present invention relates to the stabilization of subterranean formations. More particularly, the present invention relates to improved methods for stabilizing unconsolidated or weakly consolidated zones of a subterranean formation. Certain embodiments of the present invention comprise placing a gelable liquid composition into a subterranean formation, and allowing the gelable liquid composition to convert into a gelled substance that stabilizes unconsolidated or weakly consolidated particles within the subterranean formation.
- the gelable liquid composition may be any gelable liquid composition capable of converting into a gelled substance capable of substantially plugging the permeability of the formation while allowing the formation to remain flexible.
- the gelled substance should negatively impact the ability of the formation to produce desirable fluids such as hydrocarbons.
- the term "flexible” refers to a state wherein the treated formation is relatively malleable and elastic and able to withstand substantial pressure cycling without substantial breakdown of the formation.
- the resultant gelled substance should be a semi-solid, immovable, gel-like substance, which, among other things, stabilizes the treated portion of the formation while allowing the formation to absorb the stresses created during pressure cycling.
- the gelled substance may aid in preventing breakdown of the formation both by stabilizing and by adding flexibility to the formation sands.
- suitable gelable liquid compositions include, but are not limited to, resin compositions that cure to form flexible gels, gelable aqueous silicate compositions, crosslinkable aqueous polymer compositions, and polymerizable organic monomer compositions.
- Certain embodiments of the gelable liquid compositions of the present invention comprise curable resin compositions. Curable resin compositions are well known to those skilled in the art and have been used to consolidate portions of unconsolidated formations and to consolidate proppant materials into hard, permeable masses.
- curable resin compositions used in accordance with the present invention may be similar to those previously used to consolidate sand and proppant into hard, permeable masses, they are distinct in that resins suitable for use with the present invention do not cure into hard, permeable masses; rather they cure into flexible, gelled substances That is, suitable curable resin compositions form resilient gelled substances between the particulates of the treated zone of the unconsolidated formation and thereby allow that portion of the formation to remain flexible and to resist breakdown. It is not necessary or desirable for the cured resin composition to solidify and harden to provide high consolidation strength to the treated portion of the formation. On the contrary, upon being cured, the curable resin compositions useful in accordance with this invention form semi-solid, immovable, gelled substances.
- the curable resin compositions useful in accordance with this invention comprise a curable resin, a diluent, and a resin curing agent.
- resin curing agents such as polyamides
- the compositions form the semi-solid, immovable, gelled substances described above.
- the resin curing agent used may cause the organic resin compositions to form hard, brittle material rather than a desired gelled substance
- the curable resin compositions may further comprise one or more "flexibilizer additives" (described in more detail below) to provide flexibility to the cured compositions.
- curable resins examples include, but are not limited to, organic resins such as polyepoxide resins (e.g., bisphenol A-epichlorihydrin resins), polyester resins, urea-aldehyde resins, furan resins, urethane resins, and mixtures thereof. Of these, polyepoxide resins are preferred. Any diluent that is compatible with the curable resin and achieves the desired viscosity effect is suitable for use in the present invention.
- organic resins such as polyepoxide resins (e.g., bisphenol A-epichlorihydrin resins), polyester resins, urea-aldehyde resins, furan resins, urethane resins, and mixtures thereof.
- polyepoxide resins are preferred. Any diluent that is compatible with the curable resin and achieves the desired viscosity effect is suitable for use in the present invention.
- the diluent comprises butyl lactate.
- the diluent may be used to reduce the viscosity of the curable resin composition to from about 3 to about 3,000 centipoises ("cP") at 80°F.
- the diluent acts to provide flexibility to the cured composition.
- the diluent may be included in the curable resin composition in an amount sufficient to provide the desired viscosity effect.
- the diluent used is included in the curable resin composition in amount in the range of from about 5% to about 75% by weight of the curable resin.
- any resin curing agent that may be used to cure an organic resin is suitable for use in the present invention.
- the resin curing agent chosen is an amide or a polyamide, generally no flexibilizer additive will be required because, inter alia, such curing agents cause the curable resin composition to convert into a semi-solid, immovable, gelled substance.
- Suitable resin curing agents such as an amine, a polyamine, methylene dianiline, and other curing agents known in the art
- the resin curing agent used is included in the curable resin composition, whether a flexibilizer additive is included or not, in an amount in the range of from about 5% to about 75% by weight of the curable resin.
- the resin curing agent used is included in the curable resin composition in an amount in the range of from about 20% to about 75% by weight of the curable resin.
- flexibilizer additives may be used, inter alia, to provide flexibility to the gelled substances formed from the curable resin compositions. Flexibilizer additives should be used where the resin curing agent chosen would cause the organic resin composition to cure into a hard and brittle material - not the desired gelled substances described herein. For example, flexibilizer additives may be used where the resin curing agent chosen is not an amide or polyamide. Examples of suitable flexibilizer additives include, but are not limited to, an organic ester, an oxygenated organic solvent, an aromatic solvent, and combinations thereof. Of these, ethers, such as dibutyl phthalate, are preferred.
- the flexibilizer additive may be included in the curable resin composition in an amount in the range of from about 5% to about 80% by weight of the curable resin. In some embodiments of the present invention, the flexibilizer additive may be included in the curable resin composition in an amount in the range of from about 20% to about 45% by weight of the curable resin.
- the gelable liquid compositions of the present invention may comprise a gelable aqueous silicate composition.
- the gelable aqueous silicate compositions that are useful in accordance with the present invention generally comprise an aqueous alkali metal silicate solution and a temperature activated catalyst for gelling the aqueous alkali metal silicate solution.
- the aqueous alkali metal silicate solution component of the gelable aqueous silicate compositions generally comprises an aqueous liquid and an alkali metal silicate.
- the aqueous liquid component of the aqueous alkali metal silicate solution generally may be fresh water, salt water (e.g., water containing one or more salts dissolved therein), brine (e.g., saturated salt water), seawater, or any other aqueous liquid that does not adversely react with the other components used in accordance with this invention or with the subterranean formation.
- suitable alkali metal silicates include, but are not limited to, one or more of sodium silicate, potassium silicate, lithium silicate, rubidium silicate, or cesium silicate.
- sodium silicate is preferred. While sodium silicate exists in many forms, the sodium silicate used in the aqueous alkali metal silicate solution preferably has a Na 2 O- to-SiO 2 weight ratio in the range of from about 1:2 to about 1:4. Most preferably, the sodium silicate used has a Na 2 O-to-SiO 2 weight ratio in the range of about 1:3.2. Generally, the alkali metal silicate is present in the aqueous alkali metal silicate solution component in an amount in the range of from about 0.1% to about 10% by weight of the aqueous alkali metal silicate solution component.
- the temperature activated catalyst component of the gelable aqueous silicate compositions is used, inter alia, to convert the gelable aqueous silicate compositions into the desired semi-solid, immovable, gelled substance described above. Selection of a temperature activated catalyst is related, at least in part, to the temperature of the subterranean formation to which the gelable aqueous silicate composition will be introduced.
- the temperature activated catalysts which can be used in the gelable aqueous silicate compositions of the present invention include, but are not limited to, ammonium sulfate, which is most suitable in the range of from about 60°F to about 240°F; sodium acid pyrophosphate, which is most suitable in the range of from about 60°F to about 240°F; citric acid which is most suitable in the range of from about 60°F to about 120°F; and ethyl acetate which is most suitable in the range of from about 60°F to about 120°F.
- the temperature activated catalyst is present in the gelable aqueous silicate composition in the range of from about 0.1% to about 5% by weight of the gelable aqueous silicate composition.
- the gelable liquid compositions of the present invention comprises crosslinkable aqueous polymer compositions.
- suitable crosslinkable aqueous polymer compositions comprise an aqueous solvent, a crosslinkable polymer, and a crosslinking agent.
- the aqueous solvent may be any aqueous solvent in which the crosslinkable composition and the crosslinking agent may be dissolved, mixed, suspended, or dispersed therein to facilitate gel formation.
- the aqueous solvent used may be fresh water, salt water, brine, seawater, or any other aqueous liquid that does not adversely react with the other components used in accordance with this invention or with the subterranean formation.
- Preferred acrylamide-containing polymers include polyacrylamide, partially hydrolyzed polyacrylamide, copolymers of acrylamide and acrylate, and carboxylate-containing terpolymers and tetrapolymers of acrylate.
- Suitable crosslinkable polymers include hydratable polymers comprising polysaccharides and derivatives thereof and that contain one or more of the monosaccharide units galactose, mannose, glucoside, glucose, xylose, arabinose, fructose, glucuronic acid, or pyranosyl sulfate.
- Suitable natural hydratable polymers include, but are not limited to, guar gum, locust bean gum, tara, konjak, tamarind, starch, cellulose, karaya, xanthan, tragacanth, and carrageenan, and derivatives of all of the above.
- Suitable hydratable synthetic polymers and copolymers that may be used in the crosslinkable aqueous polymer compositions include, but are not limited to, polyacrylates, polymethacrylates, polyacrylamides, maleic anhydride, methylvinyl ether polymers, polyvinyl alcohols, and polyvinylpyrrolidone.
- the crosslinkable polymer used should be included in the crosslinkable aqueous polymer composition in an amount sufficient to form the desired gelled substance in the subterranean formation.
- the crosslinkable polymer is included in the crosslinkable aqueous polymer composition in an amount in the range of from about 1% to about 30% by weight of the aqueous solvent.
- the crosslinkable polymer is included in the crosslinkable aqueous polymer composition in an amount in the range of from about 1% to about 20% by weight of the aqueous solvent.
- the crosslinkable aqueous polymer compositions of the present invention further comprise a crosslinking agent for crosslinking the crosslinkable polymers to form the desired gelled substance.
- the crosslinking agent is a molecule or complex containing a reactive transition metal cation.
- a most preferred crosslinking agent comprises trivalent chromium cations complexed or bonded to anions, atomic oxygen, or water.
- crosslinking agents include, but are not limited to, compounds or complexes containing chromic acetate and/or chromic chloride.
- Other suitable transition metal cations include chromium NI within a redox system, aluminum III, iron II, iron III, and zirconium IN.
- the crosslinking agent should be present in the crosslinkable aqueous polymer compositions of the present invention in an amount sufficient to provide, inter alia, the desired degree of crosslinking.
- the crosslinking agent is present in the crosslinkable aqueous polymer compositions of the present invention in an amount in the range of from 0.01% to about 5% by weight of the crosslinkable aqueous polymer composition.
- crosslinkable aqueous polymer compositions may further comprise a crosslinking delaying agent, such as a polysaccharide crosslinking delaying agents derived from guar, guar derivatives, or cellulose derivatives.
- the crosslinking delaying agent may be included in the crosslinkable aqueous polymer compositions, wter alia, to delay crosslinking of the crosslinkable aqueous polymer compositions until desired.
- the gelled liquid compositions of the present invention comprise polymerizable organic monomer compositions.
- suitable polymerizable organic monomer compositions comprise an aqueous-base fluid, a water- soluble polymerizable organic monomer, an oxygen scavenger, and a primary initiator.
- the aqueous-base fluid component of the polymerizable organic monomer composition generally may be fresh water, salt water, brine, seawater, or any other aqueous liquid that does not adversely react with the other components used in accordance with this invention or with the subterranean formation.
- a variety of monomers are suitable for use as the water-soluble polymerizable organic monomers in the present invention.
- Suitable monomers include, but are not limited to, acrylic acid, methacrylic acid, acrylamide, methacrylamide, 2- methacrylamido-2-methylpropane sulfonic acid, 2-dimethylacrylamide, vinyl sulfonic acid, N.N-dimethylaminoethylmethacrylate, 2-triethylammoniumethylmethacrylate chloride, N,N- dimethyl-aminopropylmethacryl-amide, methacrylamidepropyltriethylammonium chloride, N-vinyl pyrrolidone, vinyl-phosphonic acid, and methacryloyloxyethyl trimethylammonium sulfate, and mixtures thereof.
- the water-soluble polymerizable organic monomer should be self crosslinking.
- suitable monomers which are self crosslinking include, but are not limited to, hydroxyethylacrylate, hydroxymethylacrylate, hydroxyethylmethacrylate, N-hydroxymethylacrylamide, N-hydroxymethyl-methacrylamide, polyethylene glycol acrylate, polyethylene glycol methacrylate, polypropylene gylcol acrylate, polypropylene glycol methacrylate, and mixtures thereof. Of these, hydroxyethylacrylate is preferred.
- An example of a particularly preferable monomer is hydroxyethylcellulose-vinyl phosphoric acid.
- the water-soluble polymerizable organic monomer should be included in the polymerizable organic monomer composition in an amount sufficient to form the desired gelled substance after placement of the polymerizable organic monomer composition into the subterranean formation.
- the water-soluble polymerizable organic monomer(s) are included in the polymerizable organic monomer composition in an amount in the range of from about 1% to about 30% by weight of the aqueous-base fluid.
- the water-soluble polymerizable organic monomer(s) are included in the polymerizable organic monomer composition in an amount in the range of from about 1% to about 20% by weight of the aqueous-base fluid.
- an oxygen scavenger such as stannous chloride
- the stannous chloride may be pre-dissolved in a hydrochloric acid solution.
- the stannous chloride may be dissolved in a 0.1% by weight aqueous hydrochloric acid solution in an amount of about 10% by weight of the resulting solution.
- the resulting stannous chloride-hydrochloric acid solution may be included in the polymerizable organic monomer composition in an amount in the range of from about 0.1% to about 10% by weight of the polymerizable organic monomer composition.
- the stannous chloride may be included in the polymerizable organic monomer composition of the present invention in an amount in the range of from about 0.005% to about 0.1% by weight of the polymerizable organic monomer composition.
- the primary initiator is used, inter alia, to initiate polymerization of the water-soluble polymerizable organic monomer(s) used in the present invention. Any compound or compounds which form free radicals in aqueous solution may be used as the primary initiator.
- the free radicals act, inter alia, to initiate polymerization of the water- soluble polymerizable organic monomer(s) present in the polymerizable organic monomer composition.
- Compounds suitable for use as the primary initiator include, but are not limited to, alkali metal persulfates; peroxides; oxidation-reduction systems employing reducing agents, such as sulfites in combination with oxidizers; and azo polymerization initiators.
- Preferred azo polymerization initiators include 2,2'-azobis(2-imidazole-2-hydroxyethyl) propane, 2,2'-azobis(2-aminopropane), 4,4'-azobis(4-cyanovaleric acid), and 2,2'-azobis(2- methyl-N-(2-hydroxyethyl) propionamide.
- the primary initiator should be present in the polymerizable organic monomer composition in an amount sufficient to initiate polymerization of the water-soluble polymerizable organic monomer(s).
- the primary initiator is present in the polymerizable organic monomer composition in an amount in the range of from about 0.1% to about 5% by weight of the water-soluble polymerizable organic monomer(s).
- the polymerizable organic monomer compositions further may comprise a secondary initiator.
- a secondary initiator may be used, for example, where the immature aqueous gel is placed into a subterranean formation that is relatively cool as compared to the surface mixing, such as when placed below the mud line in offshore operations.
- the secondary initiator may be any suitable water-soluble compound or compounds that may react with the primary initiator to provide free radicals at a lower temperature.
- An example of a suitable secondary initiator is triethanolamine.
- the secondary initiator is present in the polymerizable organic monomer composition in an amount in the range of from about 0.1% to about 5% by weight of the water-soluble polymerizable organic monomer(s).
- the polymerizable organic monomer compositions of the present invention further may comprise a crosslinking agent for crosslinking the polymerizable organic monomer compositions in the desired gelled substance.
- the crosslinking agent is a molecule or complex containing a reactive transition metal cation.
- a most preferred crosslinking agent comprises trivalent chromium cations complexed or bonded to anions, atomic oxygen, or water.
- suitable crosslinking agents include, but are not limited to, compounds or complexes containing chromic acetate and/or chromic chloride.
- Other suitable transition metal cations include chromium VI within a redox system, aluminum III, iron II, iron III, and zirconium IV.
- the crosslinking agent may be present in polymerizable organic monomer compositions in an amount in the range of from 0.01% to about 5% by weight of the polymerizable organic monomer composition.
- an optional pre-flush fluid may be placed into the subterranean formation prior to the placement of the gelable liquid compositions into the subterranean formation.
- the pre-flush fluid acts, inter alia, to prepare the subterranean formation for the later placement of the gelable liquid composition.
- the volume of the pre-flush fluid placed into the formation is between 0.1 to 50 times the volume of the gelable liquid composition.
- the pre-flush fluid may be any fluid that does not adversely react with the other components used in accordance with this invention or with the subterranean formation.
- the pre-flush fluid may be an aqueous-based fluid or a hydrocarbon-based fluid.
- the pre-flush fluid may comprise an aqueous liquid and a surfactant.
- the aqueous-liquid component may be fresh water, salt water, brine, or seawater, or any other aqueous-based liquid that does not adversely react with the other components used in accordance with this invention or with the subterranean formation.
- any surfactant compatible with the later-used gelable liquid composition and capable of aiding the gelable liquid composition in flowing to the contact points between adjacent particulates in the formation may be used in the present invention.
- Such surfactants include, but are not limited to, ethoxylated nonyl phenol phosphate esters, mixtures of one or more cationic surfactants, one or more non-ionic surfactants, and an alkyl phosphonate surfactant. Suitable mixtures of one or more cationic and nonionic surfactants are described in U.S. Patent No. 6,311,773 issued to Todd et al. on November 6, 2001, the disclosure of which is incorporated herein by reference. A C_ - C 22 alkyl phosphonate surfactant is preferred.
- the surfactant or surfactants used are included in the pre-flush fluid in an amount sufficient to prepare the subterranean formation to receive a treatment of an immature aqueous gel.
- the surfactant is present in the pre-flush fluid in an amount in the range of from about 0.1% to about 3% by weight of the aqueous liquid.
- an optional after-flush fluid may be placed into the subterranean formation, inter alia, to restore the permeability of the treated portion of the subterranean formation.
- the after-flush fluid is preferably placed into the subterranean formation while the gelable liquid composition is still in a flowing state.
- the after-flush fluid acts to displace at least a portion of the gelable liquid composition from the pore channels of the subterranean formation and to force the displaced portion of the gelable liquid composition further into the subterranean formation where it may have negligible impact on subsequent hydrocarbon production.
- the after-flush fluid may be any fluid that does not adversely react with the other components used in accordance with this invention or with the subterranean formation.
- the after-flush may be an aqueous-based brine or a hydrocarbon fluid, such as kerosene, diesel, or crude oil.
- the after-flush fluid may be placed into the formation at a matrix flow rate such that a sufficient portion of the gelable liquid composition may be displaced from the pore channels to restore the formation to a desired permeability.
- a substantial amount of the gelable liquid composition should not be displaced therein.
- sufficient amounts of the gelable liquid composition should remain in the treated zone to provide effective stabilization of the unconsolidated zones therein.
- the volume of after-flush fluid placed in the subterranean formation ranges from about 0.1 to about 50 times the volume of the gelable liquid composition. In some embodiments of the present invention, the volume of after-flush fluid placed in the subterranean formation ranges from about 2 to about 5 times the volume of the gelable liquid composition.
- no after-flush fluid is placed into the subterranean formation after placement of the immature aqueous gel into the subterranean formation.
- Whether to omit an after-flush fluid is based, in part, on the initial permeability of the subterranean formation. For example, it may be desirable to not use an after-flush where the initial permeability of the formation is less than about 10 milli-darcies ("mD") for gas wells, or less than about 50 mD for oil wells. Where no after-flush is used, the permeability of the subterranean formation is significantly reduced because the gelable liquid composition remains in the pore spaces therein and converts into a gelled substance.
- mD milli-darcies
- one or more fractures may be created in the subterranean formation extending through the gelled substance and into untreated zones of the subterranean formation.
- the fracture or fractures are created after the after-flush fluid is placed into the subterranean formation.
- the fracture or fractures may be created by pumping a viscous fracturing fluid comprising a proppant into the subterranean formation at a rate and pressure sufficient to create one or more fractures therein.
- the continued pumping of the fracturing fluid extends the fractures into the subterranean formation and carries the proppant into the fracture or fractures formed.
- the proppant is deposited in the fracture or fractures.
- the fracture or fractures may be prevented from closing by the presence of the proppant therein.
- the fracturing fluids that may be used in accordance with the present invention include any fracturing fluid that is suitable for use in subterranean operations, such as gelled water-based fluids, hydrocarbon-based fluids, foams, and emulsions.
- the fracturing fluid used to create the one or more fractures may be a viscoelastic surfactant fluid comprising worm-like micelles.
- the fracturing fluid may be a gelled fracturing fluid that comprises water (e.g., fresh water, salt water, brine, or sea water) and a gelling agent for increasing the viscosity of the fracturing fluid.
- water e.g., fresh water, salt water, brine, or sea water
- the increased viscosity reduces fluid loss and allows the fracturing fluid to transport significant concentrations of proppant into the created fractures.
- the selection of an appropriate fracturing fluid is within the ability of one of ordinary skill in the art.
- the proppant deposited in the one or more fractures formed in a subterranean formation functions to prevent the fractures from closing due to overburden pressures, whereby produced fluids can flow through the fractures.
- Proppant used in accordance with the present invention are generally paniculate materials of a size such that formation particulates that may migrate with produced fluids are prevented from being produced from the subterranean formation, e.g., the proppant may filter out migrating sand.
- particulate materials may be used as proppant in accordance with the present invention, including, but not limited to, sand; bauxite; ceramic materials; glass materials; polymer materials; "TEFLON " materials; ground or crushed nut shells; ground or crushed seed shells; ground or crushed fruit pits; processed wood; composite particulates prepared from a binder with filler particulate including silica, alumina, fumed carbon, carbon black, graphite, mica, titanium dioxide, meta-silicate, calcium silicate, kaolin, talc, zirconia, boron, fly ash, hollow glass microspheres, and solid glass; or mixtures thereof.
- filler particulate including silica, alumina, fumed carbon, carbon black, graphite, mica, titanium dioxide, meta-silicate, calcium silicate, kaolin, talc, zirconia, boron, fly ash, hollow glass microspheres, and solid glass; or mixtures thereof.
- the proppant used may have a particle size in the range of from about 2 to about 400 mesh, U.S. Sieve Series.
- the proppant is graded sand having a particle size in the range of from about 10 to about 70 mesh, U.S. Sieve Series.
- Preferred sand particle size distribution ranges are one or more of 10-20 mesh, 20-40 mesh, 40-60 mesh or 50-70 mesh, depending on the particle size and distribution of the formation particulates to be screened out by the proppant.
- the proppant used in accordance with the present invention may be coated with a hardenable resin composition.
- the hardenable resin composition is preferably comprised of a hardenable resin, a diluent, and a silane coupling agent.
- the hardenable resin composition should harden after being introduced into fracture or fractures that are formed.
- the hardening may be caused by heat from the formation or by inclusion of a delayed internal hardening agent in the hardenable resin composition. It is within the ability of one of ordinary skill in the art to determine, with the benefit of this disclosure, the appropriate hardenable resin composition for a particular application.
- the proppant may be coated with the hardenable resin composition by any suitable technique; such as by batch mixing methods as the hardenable resin composition is metered directly into the proppant slurry or by coating the hardenable resin composition directly onto the dry proppant through use of auger action.
- the fracturing fluid containing proppant coated with the hardenable resin composition may be prepared in a substantially continuous, on the fly, manner. After proppant coated with the hardenable resin composition has been deposited within the subterranean formation, the hardenable resin composition may be caused to harden as described above, whereby the proppant is consolidated into a hard permeable mass in the fracture or fractures.
- the hard, permeable mass functions to prevent the production of formation particulates that may migrate with produced fluids
- the subterranean formation may be shut in for a period of time to allow the gelable liquid composition present in the subterranean formation to form the desired gelled substance therein, inter alia, to stabilize unconsolidated zones of the subterranean formation.
- the necessary period of time is dependent, among other things, on the composition of the gelable liquid composition used and the temperature of the formation. Generally, the chosen period of time will be between about 0.5 hours and about 72 hours, or longer.
- the fracturing treatment may be performed after the shut in period so that the fractures may be created through the gelled substance. Determining the proper period of time to shut in the formation is within the ability of one skilled in the art with the benefit of this disclosure. To facilitate a better understanding of the present invention, the following examples of preferred embodiments are given. In no way should the following examples be read to limit, or to define the scope of the invention. EXAMPLE 1 Tests were conducted using various treatment fluids and a simulated unconsolidated sand core. Brazos River sand was used to simulate a high permeability, unconsolidated formation material. An unconsolidated sand core was prepared by using a 1- inch ID Teflon sleeve.
- a stainless steel, 80-mesh wire screen was first installed at the bottom of the sleeve before packing 1-inch height of 40/60-mesh Ottawa sand at the bottom of the sleeve, 2.5-inch height of Brazos River sand in the middle, and 1-inch height of 40/60-mesh Ottawa sand at the top of the sleeve.
- Treatment fluids were prepared using various concentrations of "PermSeal ® " sealant, which comprises a water-soluble polymerizable organic monomer of the present invention and is commercially available from Halliburton Energy Services, Duncan, Oklahoma.
- the water-soluble polymerizable monomer present in PermSeal ® sealant is hydroxyethylacrylate.
- the concentrations of the water-soluble polymerizable organic monomer present in the treatment fluids range from about 5% to about 20% by volume of the treatment fluid.
- the following procedure was used for this series of tests. For each test, the unconsolidated sand core was first pre-flushed and saturated with 2 pore volumes of 2% KC1 brine containing 0.25% cationic surfactant at a flow rate of 1 mL/min. Following the pre- flush, a treatment fluid was injected into the core at a flow rate of 1 mL/min. After injection of the treatment fluid into the treated core, an after-flush fluid was injected into the treated core. Next, the treated core was placed inside an oven at 175°F for 20 hours to allow the monomer to fully polymerize.
- This polymerization time simulated the shut-in time of a well after being treated with a gelable liquid composition.
- kerosene was injected into the treated core to determine the retained permeability of the treated core.
- the treated core was then removed from the Teflon sleeve for observation. The above procedure was repeated for a second series of tests where no after-flush fluid was injected into the treated core before the treated core was placed inside the oven. The results of these tests are provided below in Table 1.
- a gelable liquid composition of the present invention may completely plug the permeability of an unconsolidated sand core and introduction of an after-flush fluid after the gelable liquid composition should restore permeability to such unconsolidated sand core.
- EXAMPLE 2 Brazos River sand with mesh sizes smaller than 200 mesh was used to simulate formation fines. A transparent acrylic tube (8 inches long and 1 inch inside diameter) was used for ease of observation during flow test. A unconsolidated sand core was created in the tube by placing a mixture of Brazos River sand (9 grams) and 20/40-mesh Ottawa sand (6 grams) between 100 grams of 20/40-mesh Ottawa sand on top and 20 grams of 40/60-mesh Ottawa sand at the bottom.
- Treatment fluids were prepared using various concentrations of "PermSeal ® " sealant, wherein the PermSeal ® sealant comprises a water-soluble polymerizable organic monomer.
- concentrations of the water-soluble polymerizable organic monomer present in the treatment fluids ranges from about 5% to about 10% by volume of the treatment fluid.
- the following procedure was used for this series of tests. For test 1, an unconsolidated sand core constructed as described above was first pre-flushed from top down and saturated with 120 mL of kerosene at a flow rate of 10 mL/min. Following the kerosene pre-flush, a treatment fluid comprising PermSeal ® was injected into the core at a flow rate of 10 mL/min.
- an unconsolidated sand core constructed as described above was first pre-flushed from top down and saturated with 120 mL of 2% KC1 brine containing 0.25% cationic surfactant at a flow rate of 2 mL/min. Following the brine pre-flush, a treatment fluid of PermSeal ® was injected into the core at a flow rate of 2 mL/min. After injection of the treatment fluid, an after-flush of 2% KC1 brine was injected into the treated core. Next, the treated core was let sit at room temperature for 20 hours to allow the monomer to fully gel.
Abstract
Description
Claims
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BRPI0508241-2A BRPI0508241A (en) | 2004-03-05 | 2005-02-22 | methods of stabilizing and stimulating the production of unconsolidated or weakly consolidated underground formation |
CA002558055A CA2558055A1 (en) | 2004-03-05 | 2005-02-22 | Compositions and methods for controlling unconsolidated particulates |
AU2005219612A AU2005219612A1 (en) | 2004-03-05 | 2005-02-22 | Compositions and methods for controlling unconsolidated particulates |
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US10/793,711 US20050194142A1 (en) | 2004-03-05 | 2004-03-05 | Compositions and methods for controlling unconsolidated particulates |
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AU (1) | AU2005219612A1 (en) |
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WO (1) | WO2005085594A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101724387B (en) * | 2008-10-15 | 2012-12-12 | 中国石油天然气股份有限公司 | Polyhydroxy-alcohol fracturing fluid |
CN109423263A (en) * | 2017-08-30 | 2019-03-05 | 中国石油化工股份有限公司 | A kind of felted borehole wall strengthening agent and preparation method |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6691780B2 (en) | 2002-04-18 | 2004-02-17 | Halliburton Energy Services, Inc. | Tracking of particulate flowback in subterranean wells |
US20050173116A1 (en) | 2004-02-10 | 2005-08-11 | Nguyen Philip D. | Resin compositions and methods of using resin compositions to control proppant flow-back |
US7211547B2 (en) | 2004-03-03 | 2007-05-01 | Halliburton Energy Services, Inc. | Resin compositions and methods of using such resin compositions in subterranean applications |
US7299875B2 (en) | 2004-06-08 | 2007-11-27 | Halliburton Energy Services, Inc. | Methods for controlling particulate migration |
US7757768B2 (en) | 2004-10-08 | 2010-07-20 | Halliburton Energy Services, Inc. | Method and composition for enhancing coverage and displacement of treatment fluids into subterranean formations |
US7883740B2 (en) | 2004-12-12 | 2011-02-08 | Halliburton Energy Services, Inc. | Low-quality particulates and methods of making and using improved low-quality particulates |
US7673686B2 (en) | 2005-03-29 | 2010-03-09 | Halliburton Energy Services, Inc. | Method of stabilizing unconsolidated formation for sand control |
US9714371B2 (en) | 2005-05-02 | 2017-07-25 | Trican Well Service Ltd. | Method for making particulate slurries and particulate slurry compositions |
US7318474B2 (en) | 2005-07-11 | 2008-01-15 | Halliburton Energy Services, Inc. | Methods and compositions for controlling formation fines and reducing proppant flow-back |
US7493957B2 (en) * | 2005-07-15 | 2009-02-24 | Halliburton Energy Services, Inc. | Methods for controlling water and sand production in subterranean wells |
US7441598B2 (en) * | 2005-11-22 | 2008-10-28 | Halliburton Energy Services, Inc. | Methods of stabilizing unconsolidated subterranean formations |
US7819192B2 (en) | 2006-02-10 | 2010-10-26 | Halliburton Energy Services, Inc. | Consolidating agent emulsions and associated methods |
US8613320B2 (en) | 2006-02-10 | 2013-12-24 | Halliburton Energy Services, Inc. | Compositions and applications of resins in treating subterranean formations |
US7926591B2 (en) | 2006-02-10 | 2011-04-19 | Halliburton Energy Services, Inc. | Aqueous-based emulsified consolidating agents suitable for use in drill-in applications |
US7934557B2 (en) * | 2007-02-15 | 2011-05-03 | Halliburton Energy Services, Inc. | Methods of completing wells for controlling water and particulate production |
EA200901453A1 (en) | 2007-04-26 | 2010-04-30 | Трайкэн Велл Сервис Лтд. | REGULATION OF PARTICLES OUTDOSE BY LIQUIDS |
CA2693427C (en) * | 2007-07-18 | 2016-03-08 | Trican Well Service Ltd. | Resin coated proppant slurry compositions and methods of making and using same |
EA028321B1 (en) | 2008-12-23 | 2017-11-30 | 3М Инновейтив Пропертиз Компани | Curable fiber, compositions comprising the same and method of treating subterranean formations |
WO2010075256A1 (en) | 2008-12-23 | 2010-07-01 | 3M Innovative Properties Company | Particles comprising blocked isocyanate resin and method of modifying a wellbore using the same |
US7762329B1 (en) | 2009-01-27 | 2010-07-27 | Halliburton Energy Services, Inc. | Methods for servicing well bores with hardenable resin compositions |
US8215393B2 (en) * | 2009-10-06 | 2012-07-10 | Schlumberger Technology Corporation | Method for treating well bore within a subterranean formation |
US8931554B2 (en) * | 2011-10-27 | 2015-01-13 | Halliburton Energy Services, Inc. | Method for enhancing fracture conductivity |
US9932514B2 (en) | 2014-04-25 | 2018-04-03 | Trican Well Service Ltd. | Compositions and methods for making aqueous slurry |
CA2856942A1 (en) | 2014-07-16 | 2016-01-16 | Trican Well Service Ltd. | Aqueous slurry for particulates transportation |
CA2880646A1 (en) | 2015-01-30 | 2016-07-30 | Trican Well Service Ltd. | Composition and method of using polymerizable natural oils to treat proppants |
WO2016133629A1 (en) * | 2015-02-17 | 2016-08-25 | Halliburton Energy Services, Inc. | Polyamino-functionalized nanopartices as hardeners for particulate consolidation |
US10385261B2 (en) | 2017-08-22 | 2019-08-20 | Covestro Llc | Coated particles, methods for their manufacture and for their use as proppants |
US20190316032A1 (en) * | 2018-02-20 | 2019-10-17 | Frac Force Technologies Llc | Dual-use, dual-function polyacrylamide proppant suspending agent for fluid transport of high concentrations of proppants |
US11274243B2 (en) | 2018-06-08 | 2022-03-15 | Sunita Hydrocolloids Inc. | Friction reducers, fracturing fluid compositions and uses thereof |
US11746282B2 (en) | 2018-06-08 | 2023-09-05 | Sunita Hydrocolloids Inc. | Friction reducers, fracturing fluid compositions and uses thereof |
CN109294532B (en) * | 2018-09-06 | 2021-01-29 | 中国海洋石油集团有限公司 | Environment-friendly high-performance coating inhibitor and preparation method and application thereof |
CN110387222B (en) * | 2019-08-01 | 2021-12-10 | 西南石油大学 | Porous gel plugging agent, preparation method and application thereof |
US20230203362A1 (en) * | 2021-12-29 | 2023-06-29 | Halliburton Energy Services, Inc. | Polymerized Alkali Silicate Gels For Use In Subterranean Formations |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4291766A (en) * | 1979-04-09 | 1981-09-29 | Shell Oil Company | Process for consolidating water-wet sands with an epoxy resin-forming solution |
US4838352A (en) * | 1986-11-25 | 1989-06-13 | Dowell Schlumberger Incorporated | Process for plugging subterranean formations |
US6016870A (en) * | 1998-06-11 | 2000-01-25 | Halliburton Energy Services, Inc. | Compositions and methods for consolidating unconsolidated subterranean zones |
US6152234A (en) * | 1998-06-10 | 2000-11-28 | Atlantic Richfield Company | Method for strengthening a subterranean formation |
US6257335B1 (en) * | 2000-03-02 | 2001-07-10 | Halliburton Energy Services, Inc. | Stimulating fluid production from unconsolidated formations |
Family Cites Families (94)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3123138A (en) * | 1964-03-03 | robichaux | ||
US2703316A (en) * | 1951-06-05 | 1955-03-01 | Du Pont | Polymers of high melting lactide |
US2869642A (en) * | 1954-09-14 | 1959-01-20 | Texas Co | Method of treating subsurface formations |
US3297086A (en) * | 1962-03-30 | 1967-01-10 | Exxon Production Research Co | Sand consolidation method |
US3492147A (en) * | 1964-10-22 | 1970-01-27 | Halliburton Co | Method of coating particulate solids with an infusible resin |
US3308885A (en) * | 1965-12-28 | 1967-03-14 | Union Oil Co | Treatment of subsurface hydrocarbon fluid-bearing formations to reduce water production therefrom |
US3784585A (en) * | 1971-10-21 | 1974-01-08 | American Cyanamid Co | Water-degradable resins containing recurring,contiguous,polymerized glycolide units and process for preparing same |
US3863709A (en) * | 1973-12-20 | 1975-02-04 | Mobil Oil Corp | Method of recovering geothermal energy |
US3868998A (en) * | 1974-05-15 | 1975-03-04 | Shell Oil Co | Self-acidifying treating fluid positioning process |
US4070865A (en) * | 1976-03-10 | 1978-01-31 | Halliburton Company | Method of consolidating porous formations using vinyl polymer sealer with divinylbenzene crosslinker |
US4008763A (en) * | 1976-05-20 | 1977-02-22 | Atlantic Richfield Company | Well treatment method |
US4074760A (en) * | 1976-11-01 | 1978-02-21 | The Dow Chemical Company | Method for forming a consolidated gravel pack |
GB1569063A (en) * | 1978-05-22 | 1980-06-11 | Shell Int Research | Formation parts around a borehole method for forming channels of high fluid conductivity in |
US4443380A (en) * | 1979-08-31 | 1984-04-17 | Asahi-Dow Limited | Organic europlum salt phosphor |
US4716964A (en) * | 1981-08-10 | 1988-01-05 | Exxon Production Research Company | Use of degradable ball sealers to seal casing perforations in well treatment fluid diversion |
US4498995A (en) * | 1981-08-10 | 1985-02-12 | Judith Gockel | Lost circulation drilling fluid |
US4564459A (en) * | 1981-12-03 | 1986-01-14 | Baker Oil Tools, Inc. | Proppant charge and method |
US4494605A (en) * | 1981-12-11 | 1985-01-22 | Texaco Inc. | Sand control employing halogenated, oil soluble hydrocarbons |
US4439489A (en) * | 1982-02-16 | 1984-03-27 | Acme Resin Corporation | Particles covered with a cured infusible thermoset film and process for their production |
US4501328A (en) * | 1983-03-14 | 1985-02-26 | Mobil Oil Corporation | Method of consolidation of oil bearing sands |
US4493875A (en) * | 1983-12-09 | 1985-01-15 | Minnesota Mining And Manufacturing Company | Proppant for well fractures and method of making same |
US4693808A (en) * | 1986-06-16 | 1987-09-15 | Shell Oil Company | Downflow fluidized catalytic cranking reactor process and apparatus with quick catalyst separation means in the bottom thereof |
US4649998A (en) * | 1986-07-02 | 1987-03-17 | Texaco Inc. | Sand consolidation method employing latex |
US4733729A (en) * | 1986-09-08 | 1988-03-29 | Dowell Schlumberger Incorporated | Matched particle/liquid density well packing technique |
US4796701A (en) * | 1987-07-30 | 1989-01-10 | Dowell Schlumberger Incorporated | Pyrolytic carbon coating of media improves gravel packing and fracturing capabilities |
US4800960A (en) * | 1987-12-18 | 1989-01-31 | Texaco Inc. | Consolidatable gravel pack method |
US4809783A (en) * | 1988-01-14 | 1989-03-07 | Halliburton Services | Method of dissolving organic filter cake |
US4903770A (en) * | 1988-09-01 | 1990-02-27 | Texaco Inc. | Sand consolidation methods |
US4986353A (en) * | 1988-09-14 | 1991-01-22 | Conoco Inc. | Placement process for oil field chemicals |
US4986354A (en) * | 1988-09-14 | 1991-01-22 | Conoco Inc. | Composition and placement process for oil field chemicals |
US4895207A (en) * | 1988-12-19 | 1990-01-23 | Texaco, Inc. | Method and fluid for placing resin coated gravel or sand in a producing oil well |
US4986355A (en) * | 1989-05-18 | 1991-01-22 | Conoco Inc. | Process for the preparation of fluid loss additive and gel breaker |
US5182051A (en) * | 1990-01-17 | 1993-01-26 | Protechnics International, Inc. | Raioactive tracing with particles |
US6184311B1 (en) * | 1990-03-26 | 2001-02-06 | Courtaulds Coatings (Holdings) Limited | Powder coating composition of semi-crystalline polyester and curing agent |
US5082056A (en) * | 1990-10-16 | 1992-01-21 | Marathon Oil Company | In situ reversible crosslinked polymer gel used in hydrocarbon recovery applications |
US5178218A (en) * | 1991-06-19 | 1993-01-12 | Oryx Energy Company | Method of sand consolidation with resin |
CA2062395A1 (en) * | 1991-06-21 | 1992-12-22 | Robert H. Friedman | Sand consolidation methods |
US5293939A (en) * | 1992-07-31 | 1994-03-15 | Texaco Chemical Company | Formation treating methods |
US5361856A (en) * | 1992-09-29 | 1994-11-08 | Halliburton Company | Well jetting apparatus and met of modifying a well therewith |
US5396957A (en) * | 1992-09-29 | 1995-03-14 | Halliburton Company | Well completions with expandable casing portions |
US5338822A (en) * | 1992-10-02 | 1994-08-16 | Cargill, Incorporated | Melt-stable lactide polymer composition and process for manufacture thereof |
US5295542A (en) * | 1992-10-05 | 1994-03-22 | Halliburton Company | Well gravel packing methods |
CA2119316C (en) * | 1993-04-05 | 2006-01-03 | Roger J. Card | Control of particulate flowback in subterranean wells |
US5377759A (en) * | 1993-05-20 | 1995-01-03 | Texaco Inc. | Formation treating methods |
US5422183A (en) * | 1993-06-01 | 1995-06-06 | Santrol, Inc. | Composite and reinforced coatings on proppants and particles |
US5359026A (en) * | 1993-07-30 | 1994-10-25 | Cargill, Incorporated | Poly(lactide) copolymer and process for manufacture thereof |
US5388648A (en) * | 1993-10-08 | 1995-02-14 | Baker Hughes Incorporated | Method and apparatus for sealing the juncture between a vertical well and one or more horizontal wells using deformable sealing means |
US5386874A (en) * | 1993-11-08 | 1995-02-07 | Halliburton Company | Perphosphate viscosity breakers in well fracture fluids |
US5381864A (en) * | 1993-11-12 | 1995-01-17 | Halliburton Company | Well treating methods using particulate blends |
US5559086A (en) * | 1993-12-13 | 1996-09-24 | Halliburton Company | Epoxy resin composition and well treatment method |
US5393810A (en) * | 1993-12-30 | 1995-02-28 | Halliburton Company | Method and composition for breaking crosslinked gels |
US5494178A (en) * | 1994-07-25 | 1996-02-27 | Alu Inc. | Display and decorative fixture apparatus |
US5499678A (en) * | 1994-08-02 | 1996-03-19 | Halliburton Company | Coplanar angular jetting head for well perforating |
US5498280A (en) * | 1994-11-14 | 1996-03-12 | Binney & Smith Inc. | Phosphorescent and fluorescent marking composition |
US5591700A (en) * | 1994-12-22 | 1997-01-07 | Halliburton Company | Fracturing fluid with encapsulated breaker |
US5649323A (en) * | 1995-01-17 | 1997-07-15 | Kalb; Paul D. | Composition and process for the encapsulation and stabilization of radioactive hazardous and mixed wastes |
US5604186A (en) * | 1995-02-15 | 1997-02-18 | Halliburton Company | Encapsulated enzyme breaker and method for use in treating subterranean formations |
US5775425A (en) * | 1995-03-29 | 1998-07-07 | Halliburton Energy Services, Inc. | Control of fine particulate flowback in subterranean wells |
US5497830A (en) * | 1995-04-06 | 1996-03-12 | Bj Services Company | Coated breaker for crosslinked acid |
US5604184A (en) * | 1995-04-10 | 1997-02-18 | Texaco, Inc. | Chemically inert resin coated proppant system for control of proppant flowback in hydraulically fractured wells |
DE19627469A1 (en) * | 1995-07-12 | 1997-01-16 | Sanyo Chemical Ind Ltd | Epoxy resin crosslinking agent and one-component epoxy resin composition |
US5595245A (en) * | 1995-08-04 | 1997-01-21 | Scott, Iii; George L. | Systems of injecting phenolic resin activator during subsurface fracture stimulation for enhanced oil recovery |
US6028113A (en) * | 1995-09-27 | 2000-02-22 | Sunburst Chemicals, Inc. | Solid sanitizers and cleaner disinfectants |
US5864003A (en) * | 1996-07-23 | 1999-01-26 | Georgia-Pacific Resins, Inc. | Thermosetting phenolic resin composition |
US5712314A (en) * | 1996-08-09 | 1998-01-27 | Texaco Inc. | Formulation for creating a pliable resin plug |
GB9619418D0 (en) * | 1996-09-18 | 1996-10-30 | Urlwin Smith Phillip L | Oil and gas field chemicals |
US5865936A (en) * | 1997-03-28 | 1999-02-02 | National Starch And Chemical Investment Holding Corporation | Rapid curing structural acrylic adhesive |
GB9708484D0 (en) * | 1997-04-25 | 1997-06-18 | Merck Sharp & Dohme | Therapeutic agents |
US6028534A (en) * | 1997-06-02 | 2000-02-22 | Schlumberger Technology Corporation | Formation data sensing with deployed remote sensors during well drilling |
US6169058B1 (en) * | 1997-06-05 | 2001-01-02 | Bj Services Company | Compositions and methods for hydraulic fracturing |
US5873413A (en) * | 1997-08-18 | 1999-02-23 | Halliburton Energy Services, Inc. | Methods of modifying subterranean strata properties |
US6177484B1 (en) * | 1997-11-03 | 2001-01-23 | Texaco Inc. | Combination catalyst/coupling agent for furan resin |
US6012524A (en) * | 1998-04-14 | 2000-01-11 | Halliburton Energy Services, Inc. | Remedial well bore sealing methods and compositions |
US6024170A (en) * | 1998-06-03 | 2000-02-15 | Halliburton Energy Services, Inc. | Methods of treating subterranean formation using borate cross-linking compositions |
US6686328B1 (en) * | 1998-07-17 | 2004-02-03 | The Procter & Gamble Company | Detergent tablet |
US6176315B1 (en) * | 1998-12-04 | 2001-01-23 | Halliburton Energy Services, Inc. | Preventing flow through subterranean zones |
US6189615B1 (en) * | 1998-12-15 | 2001-02-20 | Marathon Oil Company | Application of a stabilized polymer gel to an alkaline treatment region for improved hydrocarbon recovery |
US6192985B1 (en) * | 1998-12-19 | 2001-02-27 | Schlumberger Technology Corporation | Fluids and techniques for maximizing fracture fluid clean-up |
US6328106B1 (en) * | 1999-02-04 | 2001-12-11 | Halliburton Energy Services, Inc. | Sealing subterranean zones |
US6244344B1 (en) * | 1999-02-09 | 2001-06-12 | Halliburton Energy Services, Inc. | Methods and compositions for cementing pipe strings in well bores |
US6187839B1 (en) * | 1999-03-03 | 2001-02-13 | Halliburton Energy Services, Inc. | Methods of sealing compositions and methods |
US6187834B1 (en) * | 1999-09-08 | 2001-02-13 | Dow Corning Corporation | Radiation curable silicone compositions |
CA2318703A1 (en) * | 1999-09-16 | 2001-03-16 | Bj Services Company | Compositions and methods for cementing using elastic particles |
CA2448435C (en) * | 2001-05-23 | 2009-10-06 | Core Laboratories L.P. | Method of determining the extent of recovery of materials injected into oil wells |
US6644400B2 (en) * | 2001-10-11 | 2003-11-11 | Abi Technology, Inc. | Backwash oil and gas production |
US6725931B2 (en) * | 2002-06-26 | 2004-04-27 | Halliburton Energy Services, Inc. | Methods of consolidating proppant and controlling fines in wells |
US7049272B2 (en) * | 2002-07-16 | 2006-05-23 | Santrol, Inc. | Downhole chemical delivery system for oil and gas wells |
US6877560B2 (en) * | 2002-07-19 | 2005-04-12 | Halliburton Energy Services | Methods of preventing the flow-back of particulates deposited in subterranean formations |
US6851474B2 (en) * | 2003-02-06 | 2005-02-08 | Halliburton Energy Services, Inc. | Methods of preventing gravel loss in through-tubing vent-screen well completions |
US6681856B1 (en) * | 2003-05-16 | 2004-01-27 | Halliburton Energy Services, Inc. | Methods of cementing in subterranean zones penetrated by well bores using biodegradable dispersants |
US6981560B2 (en) * | 2003-07-03 | 2006-01-03 | Halliburton Energy Services, Inc. | Method and apparatus for treating a productive zone while drilling |
US7021379B2 (en) * | 2003-07-07 | 2006-04-04 | Halliburton Energy Services, Inc. | Methods and compositions for enhancing consolidation strength of proppant in subterranean fractures |
US7066258B2 (en) * | 2003-07-08 | 2006-06-27 | Halliburton Energy Services, Inc. | Reduced-density proppants and methods of using reduced-density proppants to enhance their transport in well bores and fractures |
US7104325B2 (en) * | 2003-07-09 | 2006-09-12 | Halliburton Energy Services, Inc. | Methods of consolidating subterranean zones and compositions therefor |
-
2004
- 2004-03-05 US US10/793,711 patent/US20050194142A1/en not_active Abandoned
-
2005
- 2005-02-22 AU AU2005219612A patent/AU2005219612A1/en not_active Abandoned
- 2005-02-22 WO PCT/GB2005/000636 patent/WO2005085594A1/en active Application Filing
- 2005-02-22 BR BRPI0508241-2A patent/BRPI0508241A/en not_active IP Right Cessation
- 2005-02-22 CA CA002558055A patent/CA2558055A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4291766A (en) * | 1979-04-09 | 1981-09-29 | Shell Oil Company | Process for consolidating water-wet sands with an epoxy resin-forming solution |
US4838352A (en) * | 1986-11-25 | 1989-06-13 | Dowell Schlumberger Incorporated | Process for plugging subterranean formations |
US6152234A (en) * | 1998-06-10 | 2000-11-28 | Atlantic Richfield Company | Method for strengthening a subterranean formation |
US6016870A (en) * | 1998-06-11 | 2000-01-25 | Halliburton Energy Services, Inc. | Compositions and methods for consolidating unconsolidated subterranean zones |
US6257335B1 (en) * | 2000-03-02 | 2001-07-10 | Halliburton Energy Services, Inc. | Stimulating fluid production from unconsolidated formations |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101724387B (en) * | 2008-10-15 | 2012-12-12 | 中国石油天然气股份有限公司 | Polyhydroxy-alcohol fracturing fluid |
CN109423263A (en) * | 2017-08-30 | 2019-03-05 | 中国石油化工股份有限公司 | A kind of felted borehole wall strengthening agent and preparation method |
CN109423263B (en) * | 2017-08-30 | 2021-05-04 | 中国石油化工股份有限公司 | Cementing type well wall reinforcing agent and preparation method thereof |
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US20050194142A1 (en) | 2005-09-08 |
AU2005219612A1 (en) | 2005-09-15 |
BRPI0508241A (en) | 2007-07-24 |
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