WO1992014031A1 - Well cleanout using caustic alkyl polyglycoside compositions - Google Patents

Well cleanout using caustic alkyl polyglycoside compositions Download PDF

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Publication number
WO1992014031A1
WO1992014031A1 PCT/US1992/000570 US9200570W WO9214031A1 WO 1992014031 A1 WO1992014031 A1 WO 1992014031A1 US 9200570 W US9200570 W US 9200570W WO 9214031 A1 WO9214031 A1 WO 9214031A1
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Prior art keywords
composition
percent
set forth
group
wellbore
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Application number
PCT/US1992/000570
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French (fr)
Inventor
Albert F. Chan
Original Assignee
Atlantic Richfield Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Atlantic Richfield Company filed Critical Atlantic Richfield Company
Priority to DE69206602T priority Critical patent/DE69206602T2/en
Priority to CA002099012A priority patent/CA2099012C/en
Priority to EP92904799A priority patent/EP0569484B1/en
Publication of WO1992014031A1 publication Critical patent/WO1992014031A1/en
Priority to NO932724A priority patent/NO303082B1/en

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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
    • C09K8/601—Compositions for stimulating production by acting on the underground formation using spacer compositions
    • 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
    • C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B37/00—Methods or apparatus for cleaning boreholes or wells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S507/00—Earth boring, well treating, and oil field chemistry
    • Y10S507/927—Well cleaning fluid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S507/00—Earth boring, well treating, and oil field chemistry
    • Y10S507/927—Well cleaning fluid
    • Y10S507/929—Cleaning organic contaminant

Definitions

  • the present invention pertains to a cleanout composition and method for removing wellbore and well drilling equipment contaminants using a caustic al yl polyglycoside solution.
  • the present invention provides a method and composition for cleaning out cased wellbores and the like using a cleanout fluid which includes an improved surfactant characterized by a caustic alkyl polyglycoside (APG) formulation.
  • APG caustic alkyl polyglycoside
  • the APG surfactant when added with a caustic agent to cleanout fluids such as fresh water, seawater or so-called well completion water containing up to 9.7 lbs/bbl potassium or sodium chloride, for example, provides an efficient and cost-effective well cleanout system.
  • the APG surfactant can also be included in weighted spacer fluids to perform a cleaning function during displacement from the wellbore of oil or water based drilling fluids.
  • Displacement processes for cleaning out cased wellbores prior to placement of a completion brine or prior to reinjection of injection fluids are important steps during well completion or restart.
  • solvents such as xylene and surfactant solutions
  • the purpose of injecting surfactants into a cased wellbore, either through circulation into the wellbore area by way of a tubing string and return of the fluid up the annulus between the casing and the tubing string, or reverse circulation, is to obtain a very clean (e.g.. turbidity reading of 20 ntu or less in the vicinity of the perforations) wellbore to minimize formation damage due to plugging of the perforated holes by dirts and greases suspended in the completion or injection fluids.
  • alkyl polyglycoside (APG) surfactants which are non-ionic in nature, and which utilize the many hydroxyl groups in the polysaccharide chain to achieve hydrophilicity, in combination with caustic materials such as sodium hydroxide and potassium hydroxide may be particularly effective in removing oil-based drilling fluids, pipe thread sealant and lubricant materials and other contaminants in cased wellbores, including hydrocarbon substances such as diesel oil, crude oil and other naturally occurring formation fluids. These new compositions can also be effectively used to clean drilling equipment such as mud pumps, tanks and flow lines.
  • the oil soluble portion of APG surfactants may be controlled by the alkyl chain length which can be varied from C6 to C18.
  • Each saccharide group is typically equivalent to 5-7 ethylene oxide groups, and therefore is very effective in rendering water-soluble properties to APG surfactants even at high salinity and hardness conditions such as found in seawater. Still further, the APG surfactants have no cloud point constraint and appear to have no temperature limitation in the applications in question.
  • APG surfactants in accordance with the method of the present invention is that they remain very surface-active at very high pH and therefore can be used effectively as wetting, dispersing and emulsifying agents with a caustic solution.
  • concentration of APG surfactant used in a wellbore cleaning composition and process should typically be in the range of one-half percent to ten percent by weight of the total composition and preferably 0.5 percent to 4.0 percent.
  • concentration of caustic materials should be in the range of about one percent to ten percent by weight of the total composition.
  • the water solubility and oil solubility requirements can be optimized by choosing the appropriate alkyl chain length or a mixture of alkyl chain length and/or the polysaccharide number in the molecule.
  • Linear alkyl ethoxylate or alkyl phenol ethoxylate may be included as a cosurfactant.
  • SSMA sulfonated styrene maleic anhydride
  • SVTMA sulfonated vinyl toluene maleic anhydride
  • SIMA sulfonated isobutylene maleic anhydride
  • Silicone-based antifoaming agents such as poly dimethyl siloxane may be added to the composition to control foaming and in the amount of several hundred ppm to a few thousand ppm.
  • spacer fluids used in well cementing operations such as the fluids disclosed in U.S. Patent Application S.N. 07/441,853, filed November 27, 1989 by William N. Wilson, et al., and assigned to the assignee of the present invention, may include selected amounts of APG surfactant to perform wellbore cleaning during displacement of drilling fluids and other contaminants from the portion of the wellbore to be cemented.
  • the oil-based mud cake and pipe thread compound were broken down into chunky, coarse or fine dispersions of particulate materials, depending on the sodium hydroxide concentrations and APG surfactants used.
  • concentrations of sodium hydroxide At lower (one to three percent) concentrations of sodium hydroxide, the oil-based drilling mud cake and pipe thread compound were dispersed into either chunky or coarse materials, while at higher concentrations of caustic sodium hydroxide (three to ten percent by weight) , the contaminants were dispersed into fine particulate materials. Tests conducted on these materials in the absence of APG surfactants resulted in no dispersion of the contaminant materials.
  • APG surfactants with longer alkyl lipophiles such as APG 600 (C12-C14-C16 alkyl chain lengths) gave good dispersion even at sodium hydroxide concentrations of one percent.
  • APG 225 C8-C10 alkyl chain lengths
  • APG 300 C9, CIO and Cll alkyl chain lengths
  • a second series of tests was conducted using a blend of APG surfactant from the above-mentioned group of commercially available surfactants with linear alkyl ethyoxylated alcohols as a cosurfactant. Results show that solubilization of the diesel oil filtrate can be further improved by substituting up to thirty percent by weight of APG surfactant of ethyoxylated alcohols in the surfactant blend having alkyl chain lengths of C8 to C16.
  • a third series of tests was conducted to evaluate the effectiveness of a caustic/APG formulation in removing oil-based mud or pipe thread compound pastes from metal surfaces.
  • a quantity of .20 gm of paste of each material was used in each case and smeared onto a piece of 4-inch long iron barn nail.
  • Henkel Corporation's APG 300 (at 1.95 and 3.90 percent by weight) and APG 600 (at 2.275 and 4.55 percent by weight) surfactants were used with a three percent by weight caustic (sodium hydroxide) concentration showing a pH of 13.6.
  • Each sample vial (40 cc. capacity) contained 20 gm of surfactant solution.
  • the contaminated barn nail was put into the vial and heated to about 140° F.
  • the vial was then shaken moderately in a horizontal back-and-forth motion, totally immersed in the solution, for about six minutes. Results indicate that excellent dispersion of the oil-based mud paste or the pipe thread compound paste by the caustic APG composition was achieved.
  • the paste removal efficiency was comparable to that using organic hydrocarbon solvents, such as blends of paraffins and naphthene aromatics or blends of oxygenated aliphatic hydrocarbons in a 50/50 mix with water. It was also observed that while barn nails immersed in the aforementioned hydrocarbon solvent/water mixture corroded in 24 to 48 hours, no corrosion was observed with the nails exposed to the caustic/APG solutions.
  • an oil well is prepared for completion for displacing the drilling fluid remaining in the well by injecting down through a work tubing string a solution of water, a caustic agent composition selected from a group consisting of sodium hydroxide, potassium hydroxide and ammonium hydroxide in a range of one percent to ten percent by weight and a surfactant comprising an APG selected from a group consisting of an alkyl chain length having from C6 to C18 in a range from one-half percent to ten percent by weight of concentration in the solution.
  • a caustic agent composition selected from a group consisting of sodium hydroxide, potassium hydroxide and ammonium hydroxide in a range of one percent to ten percent by weight
  • a surfactant comprising an APG selected from a group consisting of an alkyl chain length having from C6 to C18 in a range from one-half percent to ten percent by weight of concentration in the solution.
  • Forty to sixty barrels of water/surfactant/caustic agent solution is pumped at a rate of 3 to 4 bbl/ in through the well and returned by way of the well annulus between the casing and the tubing string to clean the casing string and displace drilling fluid, pipe thread compound and other contaminants from the wellbore prior to perforation of the casing at the formation interval of interest.
  • the composition is circulated through the drilling fluid circulation system, including pumps, tanks and flowlines to effect cleaning of these components also.

Abstract

Oil and gas wells and injection wells are cleaned of oil-based drilling muds, pipe thread compounds, other oil contaminants, cement and contaminants in injection water by a composition comprising fresh water or seawater, one-half to ten percent concentration of an alkyl polyglycoside surfactant and one to ten percent of a caustic agent such as sodium hydroxide, potassium hydroxide or ammonium hydroxide.

Description

WELL CLEANOUT USING CAUSTIC ALKYL POLYGLYCOSIDE COMPOSITIONS
BACKGROUND OF THE INVENTION
Field of the Invention
The present invention pertains to a cleanout composition and method for removing wellbore and well drilling equipment contaminants using a caustic al yl polyglycoside solution.
Background
In the drilling and workover of oil and gas producing wells and certain types of fluid injection wells, it is necessary and desirable to clean out unwanted materials from the wellbore. For example, in the drilling and completion of an oil well, prior to perforating the casing in the formation region of interest, it is important to remove contaminants such as drilling fluids, pipe sealants/lubricants and other residues in the wellbore. Failure to perform the cleanout operation can result in contamination and plugging of the formation by the above-mentioned contaminants in the well. Wells which have already produced subterranean fluids and wells used for injection of fluids also, from time to time, require cleanup of the wellbore to remove contaminants such as hydrogen sulfide precipitates and injection water contaminants.
Although many types of surfactants have been used in wellbore cleanout processes, there is a continuing need for improved cleanout materials, in particular surfactant materials which will effectively remove the wellbore contaminants, provide for the lowest cost in relation to their performance capability, and which are preferably biodegradable and less toxic than prior art materials. It is to these ends that the present invention has been developed with a view to providing a superior surfactant formulation and method for wellbore and well drilling equipment cleaning.
SUMMARY OF THE INVENTION
The present invention provides a method and composition for cleaning out cased wellbores and the like using a cleanout fluid which includes an improved surfactant characterized by a caustic alkyl polyglycoside (APG) formulation. The APG surfactant, when added with a caustic agent to cleanout fluids such as fresh water, seawater or so-called well completion water containing up to 9.7 lbs/bbl potassium or sodium chloride, for example, provides an efficient and cost-effective well cleanout system.
The APG surfactant can also be included in weighted spacer fluids to perform a cleaning function during displacement from the wellbore of oil or water based drilling fluids.
DESCRIPTION OF PREFERRED EMBODIMENTS U.S. Patents 4,453,598 to Singer, et al. , 4,474,240, 4,528,102, 4,588,031; 4,588,455 and 4,592,425, all to Oliver, Jr., et al. and 4,681,165 to Bannister, represent the state of the art with respect to well drilling fluid displacement and cleaning processes and compositions known to Applicant. The use of alkyl polyglycosides as surfactants in the laundry detergent industry is discussed in a paper entitled "Alkyl Polyglycosides: New Surfactants That Meet Detergent Industry Needs" by A. D. Urfer, et al., Second World Conference on Detergents; Montreux, Switzerland, 1986. This presentation discusses certain advantages of alkyl polyglycoside non-ionic surfactants with oil and water solubility features which meet the basic needs of the detergent industry.
Displacement processes for cleaning out cased wellbores prior to placement of a completion brine or prior to reinjection of injection fluids are important steps during well completion or restart. The use of solvents such as xylene and surfactant solutions is common practice to help achieve the required cleanliness in cased wellbores and well drilling equipment. The purpose of injecting surfactants into a cased wellbore, either through circulation into the wellbore area by way of a tubing string and return of the fluid up the annulus between the casing and the tubing string, or reverse circulation, is to obtain a very clean (e.g.. turbidity reading of 20 ntu or less in the vicinity of the perforations) wellbore to minimize formation damage due to plugging of the perforated holes by dirts and greases suspended in the completion or injection fluids.
Caustic solutions aided by synthetic surfactants such as alkyl aryl sulfonates have been used in certain metal cleaning processes to remove the residual grease and dirt off of fabricated metal parts. However, the use of surfactants in combination with caustic materials to clean wellbores is not believed to have been tried due to the harsh environment of cased wellbore conditions, such as the high temperature conditions and the presence of high salinity, high hardness brines and residual oil based muds in the wellbore.
In accordance with the present invention, however, it has been discovered that alkyl polyglycoside (APG) surfactants which are non-ionic in nature, and which utilize the many hydroxyl groups in the polysaccharide chain to achieve hydrophilicity, in combination with caustic materials such as sodium hydroxide and potassium hydroxide may be particularly effective in removing oil-based drilling fluids, pipe thread sealant and lubricant materials and other contaminants in cased wellbores, including hydrocarbon substances such as diesel oil, crude oil and other naturally occurring formation fluids. These new compositions can also be effectively used to clean drilling equipment such as mud pumps, tanks and flow lines. The oil soluble portion of APG surfactants may be controlled by the alkyl chain length which can be varied from C6 to C18. Each saccharide group is typically equivalent to 5-7 ethylene oxide groups, and therefore is very effective in rendering water-soluble properties to APG surfactants even at high salinity and hardness conditions such as found in seawater. Still further, the APG surfactants have no cloud point constraint and appear to have no temperature limitation in the applications in question.
Another important property of the APG surfactants in accordance with the method of the present invention is that they remain very surface-active at very high pH and therefore can be used effectively as wetting, dispersing and emulsifying agents with a caustic solution. In accordance with the present invention, it is contemplated that the concentration of APG surfactant used in a wellbore cleaning composition and process should typically be in the range of one-half percent to ten percent by weight of the total composition and preferably 0.5 percent to 4.0 percent. The concentration of caustic materials should be in the range of about one percent to ten percent by weight of the total composition. As mentioned before, the water solubility and oil solubility requirements can be optimized by choosing the appropriate alkyl chain length or a mixture of alkyl chain length and/or the polysaccharide number in the molecule. Linear alkyl ethoxylate or alkyl phenol ethoxylate may be included as a cosurfactant.
Moreover, selected amounts (.25% to 1.5% by weight) of low molecular weight polymers such as sulfonated styrene maleic anhydride (SSMA) , sulfonated vinyl toluene maleic anhydride (SVTMA) or sulfonated isobutylene maleic anhydride (SIMA) may be included in the composition to improve the dispersion of solid particles. Silicone-based antifoaming agents such as poly dimethyl siloxane may be added to the composition to control foaming and in the amount of several hundred ppm to a few thousand ppm.
Still further, it is contemplated that certain spacer fluids used in well cementing operations such as the fluids disclosed in U.S. Patent Application S.N. 07/441,853, filed November 27, 1989 by William N. Wilson, et al., and assigned to the assignee of the present invention, may include selected amounts of APG surfactant to perform wellbore cleaning during displacement of drilling fluids and other contaminants from the portion of the wellbore to be cemented.
A series of experiments was conducted to evaluate the effectiveness of a caustic/APG formulation to disperse and solubilize oil-based drilling muds, conventional pipe thread lubricant/sealant compounds and diesel oil filtrate of an oil-based drilling mud. Quantities of .20 gm of oil-based drilling mud cake, conventional pipe thread compound and diesel oil filtrate were added to 40 cc. sample vials, respectively, containing a 20.0 gm solution of APG surfactant dissolved in three percent (3%) potassium chloride brine with concentrations of sodium hydroxide of one, three, five and ten percent by weight. Each sample was heated to 140° F. in an oven, then taken out and handshaken moderately for 4 to 6 minutes while cooling to room temperature. The following results were obtained using surfactant concentrations of four percent by active weight, using commercially available APG surfactants from Henkel Corporation of Ambler, Pennsylvania, under their designations APG 225, APG 300, APG 325, APG 600 and APG 625.
The oil-based mud cake and pipe thread compound were broken down into chunky, coarse or fine dispersions of particulate materials, depending on the sodium hydroxide concentrations and APG surfactants used. At lower (one to three percent) concentrations of sodium hydroxide, the oil-based drilling mud cake and pipe thread compound were dispersed into either chunky or coarse materials, while at higher concentrations of caustic sodium hydroxide (three to ten percent by weight) , the contaminants were dispersed into fine particulate materials. Tests conducted on these materials in the absence of APG surfactants resulted in no dispersion of the contaminant materials.
APG surfactants with longer alkyl lipophiles such as APG 600 (C12-C14-C16 alkyl chain lengths) gave good dispersion even at sodium hydroxide concentrations of one percent. Conversely, APG 225 (C8-C10 alkyl chain lengths) and APG 300 (C9, CIO and Cll alkyl chain lengths) required much higher caustic concentrations, in the range of three percent to ten percent sodium hydroxide to achieve similar results.
The above-mentioned tests on diesel oil filtrate also indicated better solubilization in solutions of APG surfactants with longer alkyl chain lengths than those with shorter alkyl chain lengths.
A second series of tests was conducted using a blend of APG surfactant from the above-mentioned group of commercially available surfactants with linear alkyl ethyoxylated alcohols as a cosurfactant. Results show that solubilization of the diesel oil filtrate can be further improved by substituting up to thirty percent by weight of APG surfactant of ethyoxylated alcohols in the surfactant blend having alkyl chain lengths of C8 to C16.
A third series of tests was conducted to evaluate the effectiveness of a caustic/APG formulation in removing oil-based mud or pipe thread compound pastes from metal surfaces. A quantity of .20 gm of paste of each material was used in each case and smeared onto a piece of 4-inch long iron barn nail. Henkel Corporation's APG 300 (at 1.95 and 3.90 percent by weight) and APG 600 (at 2.275 and 4.55 percent by weight) surfactants were used with a three percent by weight caustic (sodium hydroxide) concentration showing a pH of 13.6. Each sample vial (40 cc. capacity) contained 20 gm of surfactant solution. The contaminated barn nail was put into the vial and heated to about 140° F. The vial was then shaken moderately in a horizontal back-and-forth motion, totally immersed in the solution, for about six minutes. Results indicate that excellent dispersion of the oil-based mud paste or the pipe thread compound paste by the caustic APG composition was achieved. The paste removal efficiency was comparable to that using organic hydrocarbon solvents, such as blends of paraffins and naphthene aromatics or blends of oxygenated aliphatic hydrocarbons in a 50/50 mix with water. It was also observed that while barn nails immersed in the aforementioned hydrocarbon solvent/water mixture corroded in 24 to 48 hours, no corrosion was observed with the nails exposed to the caustic/APG solutions.
By way of further example, an oil well is prepared for completion for displacing the drilling fluid remaining in the well by injecting down through a work tubing string a solution of water, a caustic agent composition selected from a group consisting of sodium hydroxide, potassium hydroxide and ammonium hydroxide in a range of one percent to ten percent by weight and a surfactant comprising an APG selected from a group consisting of an alkyl chain length having from C6 to C18 in a range from one-half percent to ten percent by weight of concentration in the solution. Forty to sixty barrels of water/surfactant/caustic agent solution is pumped at a rate of 3 to 4 bbl/ in through the well and returned by way of the well annulus between the casing and the tubing string to clean the casing string and displace drilling fluid, pipe thread compound and other contaminants from the wellbore prior to perforation of the casing at the formation interval of interest. The composition is circulated through the drilling fluid circulation system, including pumps, tanks and flowlines to effect cleaning of these components also.
Although preferred embodiments of the invention have been described herein, those skilled in the art will recognize that various substitutions and modifications may be made to the method and composition without departing from the scope and spirit of the invention as recited in the appended claims.
What is claimed is:

Claims

1. A method for cleaning a cased wellbore to remove contaminants, including drilling fluids, hydrocarbons and pipe thread compounds, comprising the steps of: preparing a displacement and well washing composition comprising a vehicle selected from a group consisting of water, seawater and completion water, a surfactant comprising an alkyl polyglycoside and a caustic agent; pumping said displacement and washing composition through said wellbore to remove contaminants from said wellbore and said casing in the region of interest.
2. The method set forth in Claim 1 wherein: said caustic agent is provided in a range of from one percent to ten percent by weight of said composition.
3. The method set forth in Claim 1 wherein: said alkyl polyglycoside is provided in a range of one-half percent to ten percent by active weight of said composition.
. A composition for removing oil-based drilling muds, hydrocarbons, hydrogen sulfide precipitates, wellbore cements and other contaminants from cased wellbores, drilling mud circulation equipment and the like comprising: a vehicle selected from a group consisting of fresh water, seawater and well completion water; a surfactant comprising an alkyl polyglycoside having a hydrophobic group controlled by an alkyl chain length which can be varied from C6 to C18; and a caustic agent.
5. The composition set forth in Claim 4 wherein: the concentration of surfactant in the composition is in a range of one-half percent to ten percent by weight.
6. The composition set forth in Claim 4 wherein: the concentration of the caustic agent in the composition is in a range of one percent to ten percent by weight.
7. The composition set forth in Claim 6 wherein: said caustic agent is selected from a group consisting of sodium hydroxide, potassium hydroxide and ammonium hydroxide.
8. The composition set forth in Claim 4 wherein: said vehicle includes a completion brine containing up to 9.7 lbs/bbl of one of sodium chloride, potassium chloride, and ammonium chloride.
9. The composition set forth in Claim 4 including: a dispersant selected from a group consisting of SSMA, SVTMA and SIMA.
10. The composition set forth in Claim 4 including: an antifoaming agent selected from a group consisting of poly siloxanes.
11. The composition set forth in Claim 4 including: a cosurfactant selected from a group consisting of linear alkyl ethoxylate and alkyl phenol ethoxylate.
PCT/US1992/000570 1991-01-30 1992-01-23 Well cleanout using caustic alkyl polyglycoside compositions WO1992014031A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE69206602T DE69206602T2 (en) 1991-01-30 1992-01-23 CLEANING HOLES WITH THE ALKYL ALKYL-POLYGLYCOSIDE COMPOUNDS.
CA002099012A CA2099012C (en) 1991-01-30 1992-01-23 Well cleanout using caustic alkyl polyglycoside compositions
EP92904799A EP0569484B1 (en) 1991-01-30 1992-01-23 Well cleanout using caustic alkyl polyglycoside compositions
NO932724A NO303082B1 (en) 1991-01-30 1993-07-29 Borehole cleaning method and mixture

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US64786791A 1991-01-30 1991-01-30
US647,867 1991-01-30

Publications (1)

Publication Number Publication Date
WO1992014031A1 true WO1992014031A1 (en) 1992-08-20

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US (1) US5374361A (en)
EP (1) EP0569484B1 (en)
CA (1) CA2099012C (en)
DE (1) DE69206602T2 (en)
NO (1) NO303082B1 (en)
WO (1) WO1992014031A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994012259A1 (en) * 1992-12-01 1994-06-09 Imperial Chemical Industries Plc Low foam alkyl polyglycoside
EP0702127A1 (en) * 1994-09-15 1996-03-20 Halliburton Company Downhole drilling fluid and filter cake removal
EP0727009A1 (en) * 1993-11-05 1996-08-21 Atlantic Richfield Company Well cleanout system and method
WO1999041343A1 (en) * 1998-02-13 1999-08-19 Atlantic Richfield Company Method for cleaning deposits from a tank using a surfactant composition
WO1999041342A1 (en) * 1998-02-13 1999-08-19 Atlantic Richfield Company Surfactant composition and methods for cleaning wellbore and oil field surfaces
WO2000019062A1 (en) * 1998-09-26 2000-04-06 Atlantic Richfield Company Acidic surfactant composition and method for cleaning wellbore and flowline surfaces using the surfactant composition
WO2004044378A1 (en) * 2002-11-14 2004-05-27 Lamberti Spa Process for the cleaning of oil and gas wellbores
CN113653452A (en) * 2021-09-09 2021-11-16 中国石油大学(北京) Oil-based drilling mixture reinjection composition, oil-based drilling mixture reinjection slurry, and preparation method and application thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6090754A (en) * 1995-05-11 2000-07-18 Atlantic Richfield Company Surfactant blends for well operation
US5830831A (en) * 1995-05-11 1998-11-03 Atlantic Richfield Company Surfactant blends for well operations
WO1997026095A1 (en) * 1996-01-18 1997-07-24 Henkel Corporation Process for soil remediation
US5755295A (en) * 1996-04-19 1998-05-26 Spectral Inc. Modular drilling fluid system and method
DE19653140A1 (en) * 1996-12-19 1998-06-25 Wacker Chemie Gmbh Process for drying rock containing immobile formation water within the radius of natural gas and gas storage wells
CA2313324C (en) * 1997-12-09 2009-05-05 Atlantic Richfield Company Surfactant compositions for wellbore operations, method of forming same and methods of using same
US6112814A (en) * 1998-02-13 2000-09-05 Atlantic Richfield Company Method for cleaning wellbore surfaces using coiled tubing with a surfactant composition
US5996692A (en) * 1998-02-13 1999-12-07 Atlantic Richfield Company Surfactant composition and method for cleaning wellbore and oil field surfaces using the surfactant composition
US5874386A (en) * 1998-02-13 1999-02-23 Atlantic Richfield Company Method for cleaning drilling fluid solids from a wellbore using a surfactant composition
US6258756B1 (en) 1999-01-26 2001-07-10 Spectral, Inc. Salt water drilling mud and method
US6283213B1 (en) 1999-08-12 2001-09-04 Atlantic Richfield Company Tandem spacer fluid system and method for positioning a cement slurry in a wellbore annulus
US7358215B1 (en) 1999-09-07 2008-04-15 Akzo Nobel Surface Chemistry Llc Quaternary ammonium salts as thickening agents for aqueous systems
EP1212385B1 (en) 1999-09-07 2015-12-30 Akzo Nobel Surface Chemistry Aktiebolag Quaternary ammonium salts as thickening agents for aqueous systems
US6972274B1 (en) 1999-09-24 2005-12-06 Akzo Nobel N.V. Method of improving the permeability of an underground petroleum-containing formation
DE60122309D1 (en) 2001-06-12 2006-09-28 Schlumberger Services Petrol Surfactant composition for borehole cleaning
US6906009B2 (en) * 2002-08-14 2005-06-14 3M Innovative Properties Company Drilling fluid containing microspheres and use thereof
US7767629B2 (en) * 2002-08-14 2010-08-03 3M Innovative Properties Company Drilling fluid containing microspheres and use thereof
US8871695B2 (en) * 2007-04-25 2014-10-28 Baker Hughes Incorporated In situ microemulsions used as spacer fluids
US8415279B2 (en) * 2008-04-22 2013-04-09 Baker Hughes Incorporated Microemulsions used as spacer fluids
CA2749844C (en) 2009-01-15 2014-08-26 M-I L.L.C. Oil-based wellbore cleaning fluids and methods of using same
AU2010305947B9 (en) * 2009-10-14 2015-07-09 Basf Se Method for producing oil using surfactant mixtures
CA3142784A1 (en) 2019-07-04 2021-01-07 Conocophillips Company Wax deposit removal using aqueous surfactant

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1484601A (en) * 1922-11-06 1924-02-19 Robert E Carmichael Well cleaner
US4374733A (en) * 1981-04-01 1983-02-22 Betz Laboratories, Inc. Method for treating aqueous mediums
US4446642A (en) * 1982-09-30 1984-05-08 Selfix, Inc. Peripheral decorative article
US4483780A (en) * 1982-04-26 1984-11-20 The Procter & Gamble Company Detergent compositions containing polyglycoside and polyethoxylate detergent surfactants
US4493773A (en) * 1982-05-10 1985-01-15 The Procter & Gamble Company Low phosphate, softening laundry detergent containing ethoxylated nonionic, alkylpolysaccharide and cationic surfactants
US4553597A (en) * 1982-07-21 1985-11-19 Lamothe, Boulan, Dunogues, Duffaut, And Ribault Process for eliminating clays from rocks and sedimentary environments
US4663069A (en) * 1982-04-26 1987-05-05 The Procter & Gamble Company Light-duty liquid detergent and shampoo compositions

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2578888A (en) * 1947-08-18 1951-12-18 Phillips Petroleum Co Emulsion drilling mud
US3120266A (en) * 1960-06-30 1964-02-04 Pan American Petroleum Corp Method for removal of oil from wells
NL122510C (en) * 1963-07-08
US3716486A (en) * 1971-03-18 1973-02-13 Milchem Inc Brine drilling fluid lubricant and process for drilling subterranean wells with same
US4301868A (en) * 1979-10-15 1981-11-24 Petrolite Corporation Method using hydrocarbon foams as well stimulants
US4436846A (en) * 1979-11-07 1984-03-13 General Electric Company Composition and method for improving the properties of liquid media
US4425241A (en) * 1981-02-18 1984-01-10 Phillips Petroleum Company Drilling fluids
US4446042A (en) * 1982-10-18 1984-05-01 The Procter & Gamble Company Brightener for detergents containing nonionic and cationic surfactants
US4528106A (en) * 1983-11-14 1985-07-09 Olin Corporation Glucoside surfactants
DE3401486A1 (en) * 1984-01-18 1985-07-25 Bayer Ag, 5090 Leverkusen METHOD AND MEANS FOR PREVENTING OIL STOCK BLOCKING BY EMULSION FORMATION BASED ON ASPHALT DEPOSITS
US4609478A (en) * 1984-02-21 1986-09-02 Olin Corporation Sulfonated alkyl glucosides and use thereof in oil recovery
GB2161468B (en) * 1984-07-11 1988-05-25 Ciba Geigy Ag Scale inhibition
US4705665A (en) * 1985-04-26 1987-11-10 A. E. Staley Manufacturing Company Method for inhibiting oxidation of ferrous metals with alkyl glycosides and composition for cleaning ferrous metals
US4683074A (en) * 1985-04-26 1987-07-28 A. E. Staley Manufacturing Company Stability and compatibility of glycosides in acid systems
US4834903A (en) * 1986-09-29 1989-05-30 Henkel Corporation Alkylene oxide adducts of glycoside surfactants and detergent compositions containing same
US4913828A (en) * 1987-06-10 1990-04-03 The Procter & Gamble Company Conditioning agents and compositions containing same
DE3720330A1 (en) * 1987-06-19 1988-12-29 Huels Chemische Werke Ag METHOD FOR OBTAINING PETROLEUM FROM AN UNDERGROUND STOCK WITH TENSIDES
US4923617A (en) * 1987-12-03 1990-05-08 Mobil Oil Corporation Process for inhibiting scale formation
US5047167A (en) * 1987-12-30 1991-09-10 Lever Brothers Company, Division Of Conopco, Inc. Clear viscoelastic detergent gel compositions containing alkyl polyglycosides
US4856588A (en) * 1988-05-16 1989-08-15 Shell Oil Company Selective permeability reduction of oil-free zones of subterranean formations
US5024276A (en) * 1989-11-28 1991-06-18 Shell Oil Company Hydraulic fracturing in subterranean formations

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1484601A (en) * 1922-11-06 1924-02-19 Robert E Carmichael Well cleaner
US4374733A (en) * 1981-04-01 1983-02-22 Betz Laboratories, Inc. Method for treating aqueous mediums
US4483780A (en) * 1982-04-26 1984-11-20 The Procter & Gamble Company Detergent compositions containing polyglycoside and polyethoxylate detergent surfactants
US4663069A (en) * 1982-04-26 1987-05-05 The Procter & Gamble Company Light-duty liquid detergent and shampoo compositions
US4493773A (en) * 1982-05-10 1985-01-15 The Procter & Gamble Company Low phosphate, softening laundry detergent containing ethoxylated nonionic, alkylpolysaccharide and cationic surfactants
US4553597A (en) * 1982-07-21 1985-11-19 Lamothe, Boulan, Dunogues, Duffaut, And Ribault Process for eliminating clays from rocks and sedimentary environments
US4446642A (en) * 1982-09-30 1984-05-08 Selfix, Inc. Peripheral decorative article

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0569484A4 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994012259A1 (en) * 1992-12-01 1994-06-09 Imperial Chemical Industries Plc Low foam alkyl polyglycoside
AU676518B2 (en) * 1992-12-01 1997-03-13 Imperial Chemical Industries Plc Low foam alkyl polyglycoside
US5750513A (en) * 1992-12-01 1998-05-12 Imperial Chemical Industries Plc Hydrocarbyl polysaccharide compositions
EP0727009A1 (en) * 1993-11-05 1996-08-21 Atlantic Richfield Company Well cleanout system and method
EP0727009A4 (en) * 1993-11-05 1996-11-20 Atlantic Richfield Co Well cleanout system and method
EP0702127A1 (en) * 1994-09-15 1996-03-20 Halliburton Company Downhole drilling fluid and filter cake removal
WO1999041343A1 (en) * 1998-02-13 1999-08-19 Atlantic Richfield Company Method for cleaning deposits from a tank using a surfactant composition
WO1999041342A1 (en) * 1998-02-13 1999-08-19 Atlantic Richfield Company Surfactant composition and methods for cleaning wellbore and oil field surfaces
WO2000019062A1 (en) * 1998-09-26 2000-04-06 Atlantic Richfield Company Acidic surfactant composition and method for cleaning wellbore and flowline surfaces using the surfactant composition
WO2004044378A1 (en) * 2002-11-14 2004-05-27 Lamberti Spa Process for the cleaning of oil and gas wellbores
CN113653452A (en) * 2021-09-09 2021-11-16 中国石油大学(北京) Oil-based drilling mixture reinjection composition, oil-based drilling mixture reinjection slurry, and preparation method and application thereof
CN113653452B (en) * 2021-09-09 2022-10-25 中国石油大学(北京) Oil-based drilling mixture reinjection composition, oil-based drilling mixture reinjection slurry, and preparation method and application thereof

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NO932724D0 (en) 1993-07-29
CA2099012C (en) 1999-08-03
NO303082B1 (en) 1998-05-25
CA2099012A1 (en) 1992-07-31
NO932724L (en) 1993-09-30
EP0569484A4 (en) 1994-03-02
EP0569484A1 (en) 1993-11-18
EP0569484B1 (en) 1995-12-06
DE69206602T2 (en) 1996-04-25
US5374361A (en) 1994-12-20
DE69206602D1 (en) 1996-01-18

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