WO2004094556A1 - Methods, aqueous well treating fluids and friction reducers therefor - Google Patents
Methods, aqueous well treating fluids and friction reducers therefor Download PDFInfo
- Publication number
- WO2004094556A1 WO2004094556A1 PCT/GB2004/001640 GB2004001640W WO2004094556A1 WO 2004094556 A1 WO2004094556 A1 WO 2004094556A1 GB 2004001640 W GB2004001640 W GB 2004001640W WO 2004094556 A1 WO2004094556 A1 WO 2004094556A1
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- WO
- WIPO (PCT)
- Prior art keywords
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- present
- copolymer
- treating fluid
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/16—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity
- F17D1/17—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity by mixing with another liquid, i.e. diluting
-
- 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
- C09K8/02—Well-drilling compositions
- C09K8/04—Aqueous well-drilling compositions
- C09K8/06—Clay-free compositions
- C09K8/12—Clay-free compositions containing synthetic organic macromolecular compounds or their precursors
-
- 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
- C09K8/66—Compositions based on water or polar solvents
- C09K8/68—Compositions based on water or polar solvents containing organic compounds
-
- 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
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
-
- 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
- Y10S507/922—Fracture fluid
Definitions
- the present invention relates to friction pressure reducers for use in aqueous treating fluids.
- aqueous well treating fluids are often pumped through tubular goods disposed in well bores.
- friction pressure reducing additives have heretofore been combined with the aqueous treating fluids.
- a treatment commonly utilized for stimulating hydrocarbon production from a subterranean zone penetrated by a well bore is hydraulic fracturing.
- an aqueous treating fluid referred to in the art as a pad fluid is pumped through tubular goods disposed in the well bore into the subterranean zone to be stimulated at a rate and pressure such that fractures are formed and extended in the subterranean zone.
- a viscosified aqueous fluid having proppant particles suspended therein is pumped into the fractures so that the proppant particles suspended therein are deposited in the fractures when the viscous aqueous fluid is broken and recovered.
- the proppant particles function to prevent the fractures from closing whereby conductive channels are formed through which produced fluids can flow to the well bore.
- friction pressure reducers While the aqueous pad fluids and other aqueous well treating fluids containing friction pressure reducers utilized heretofore have been used successfully, the friction pressure reducers have been suspended in a hydrocarbon-water emulsion and as a result they have been toxic and detrimental to the environment. Thus, there are needs for improved friction pressure reducers which are non-toxic and environmentally acceptable.
- a method of this invention for treating a subterranean zone penetrated by a well bore comprises the following steps.
- An aqueous treating fluid that comprises water and a non-toxic environmentally acceptable friction pressure reducer is prepared or provided.
- the friction pressure reducer comprises a mixture of a copolymer of acrylamide and dimethylaminoethyl acrylate quaternized with benzyl chloride and a stabilizing and dispersing homopolymer of ethanaminium,N,N,N-trimethyl-2- [(l,oxo-2-propenyl)oxy]-chloride. Thereafter, the aqueous treating fluid is pumped into the subterranean zone.
- An aqueous well treating fluid of this invention is basically comprised of water and a non-toxic environmentally acceptable friction pressure reducer comprising a mixture of a copolymer of acrylamide and dimethylaminoethyl acrylate quaternized with benzyl chloride and a stabilizing and dispersing homopolymer of ethanarninium,N,N,N-trimethyl-2-[(l,oxo- 2-propenyl)oxy] -chloride.
- a non-toxic environmentally acceptable water friction pressure reducer of this invention comprises a mixture of a copolymer of acrylamide and dimethylaminoethyl acrylate quaternized with benzyl chloride and a stabilizing and dispersing homopolymer of ethanaminium,N,N,N-trimethyl-2-[(l,oxo-2-propenyl)oxy]-chloride.
- the present invention provides methods of treating a subterranean zone penetrated by a well bore comprising the steps of preparing or providing an aqueous treating fluid that comprises water and a non-toxic environmentally acceptable friction pressure reducer and then pumping the aqueous treating fluid into the subterranean zone.
- An aqueous well treating fluid is also provided comprising water and a non-toxic environmentally acceptable friction pressure reducer as is the friction pressure reducer.
- the water utilized in the aqueous treating fluid can be fresh water or salt water.
- salt water is used herein to mean unsaturated salt solutions, saturated salt solutions and brines.
- the non-toxic environmentally acceptable friction pressure reducer of this invention comprises a mixture of a copolymer of acrylamide and dimethylaminoethyl acrylate quaternized with benzyl chloride and a stabilizing and dispersing homopolymer of ethanaminium,N,N,N-trimethyl-2-[(l,oxo-2-propenyl)oxy]-chloride.
- the acrylamide is present in the copolymer in an amount in the range of from about 90 weight % to about 95 weight % and the dimethylaminoethyl acrylate quaternized with benzyl chloride is present in the copolymer in an amount in the range of from about 5 weight % to about 10 weight %.
- the acrylamide is present in the copolymer in an amount of about 93 weight % and the dimethylaminoethyl acrylate quaternized with benzyl chloride is present in the copolymer in an amount of about 7 weight %.
- the copolymer of acrylamide and dimethylaminoethyl acrylate quaternized with benzyl chloride is present in the mixture in an amount of about 96 weight % and the stabilizing and dispersing homopolymer of ethanaminium,N,N,N-trimethyl-2-[(l,oxo-2-propenyl)oxy-chloride is present in the mixture in an amount of about 4 weight %.
- the friction pressure reducer mixture is included in the aqueous treating fluid in an amount in the range of from about 0.1 gallon to about 10 gallons per 1000 gallons of water therein, more preferably in an amount of about 2 gallons per 1000 gallons.
- a method of this invention for treating a subterranean zone penetrated by a well bore comprises the following steps.
- An aqueous treating fluid that comprises water and a nontoxic environmentally acceptable friction pressure reducer is prepared or provided.
- the friction pressure reducer is comprised of a mixture of a copolymer of acrylamide and dimethylaminoethyl acrylate quaternized with benzyl chloride and a stabilizing and dispersing homopolymer of ethanaminium,N,N,N-trimethyl-2-[(l,oxo-2-propenyl)oxy]- chloride.
- the aqueous treating fluid is pumped into the subterranean zone.
- the aqueous well treating fluid of this invention is comprised of water and the nontoxic environmentally acceptable friction pressure reducer described above.
- the non-toxic environmentally acceptable water friction pressure reducer of this invention is comprised of the mixture described above.
- a preferred method of this invention for treating a subterranean zone penetrated by a well bore comprises the steps of: (a) preparing or providing an aqueous treating fluid that comprises water and a non-toxic environmentally acceptable friction pressure reducer comprising a mixture of a copolymer of acrylamide and dimethylaminoethyl acrylate quaternized with benzyl chloride and a stabilizing and dispersing homopolymer of ethanaminium,N,N,N-trimethyl-2-[(l,oxo-2-propenyl)oxy]-chloride; and (b) pumping the aqueous treating fluid into the subterranean zone.
- a non-toxic environmentally acceptable friction pressure reducer comprising a mixture of a copolymer of acrylamide and dimethylaminoethyl acrylate quaternized with benzyl chloride and a stabilizing and dispersing homopolymer of ethanaminium,N,N,N-trimethyl-2
- a preferred aqueous well treating fluid of this invention comprises: water; and a nontoxic environmentally acceptable friction pressure reducer comprising a mixture of a copolymer of acrylamide and dimethylaminoethyl acrylate quaternized with benzyl chloride and a stabilizing and dispersing homopolymer of ethanaminium,N,N,N-trimethyl-2-[(l,oxo- 2-propenyl)oxy] -chloride.
- a preferred non-toxic environmentally acceptable water friction pressure reducer comprises a mixture of a copolymer of acrylamide and dimethylaminoethyl acrylate quaternized with benzyl chloride and a stabilizing and dispersing homopolymer of ethanaminium,N,N,N-trimethyl-2-[(l,oxo-2-propenyl)oxy]-chloride.
- the friction pressure reducer of this invention was prepared as follows. A three- necked flask equipped with a stirrer, an inlet nitrogen purging tube and a condensor was charged with 52 grams of deionized water. To the water, 18 grams of ammonium sulfate, 7.5 grams of sodium sulfate and 2 grams of glycerol were added. The salt solution formed was continuously agitated.
- 0.1 gram of napthol ethyl ether surfactant and less than 0.1 grams of vazo initator, i.e., lH-imidazole J 2,2'-(azobis91- methylethylidene)bis(4,5-dihydro-dihydrochloride) were then added to the stirring solution.
- the solution was maintained at a temperature of from about 40°C to about 45°C with continuous nitrogen purging. When the oxygen was completely displaced, the polymerization initiated as indicated by the increasing viscosity of the solution and the production of exothermic heat.
- the solution was held at in the range of from 75° to 80°C for about two hours.
- the reaction was terminated by raising the temperature to 95 °C and holding that temperature for one hour.
- the copolymer and homopolymer product mixture had a specific gravity of 1.15 plus or minus 0.05 at 60°F and the liquid product had a milky white appearance.
- Portions of the above described friction pressure reducer product were added to portions of fresh water, a 2% KC1 solution, a 10% NaCl solution and synthetic brine and tested for friction pressure reduction.
- a small scale friction pressure reduction measurement apparatus was used comprised of a transducer connected to a 6 foot long pipe. The inlet of the transducer was 2 feet from the inlet end of the pipe. The inside diameter of the measurement tube connected between the pipe and the transducer was 0.48 inches.
- the outlet end of the 6 foot long pipe (4 feet) was attached to a reservoir tank through a nipple which had a diameter of 1 inch.
- the reservoir tank held a total of 10 liters of the base liquid to which the friction pressure reducing mixture would be added. Two preliminary pressure measurements of the base fluid were required before the friction reduction agent was tested.
- the first measurement (Ph) was taken with the pump stopped for 10 seconds. The pump was then started and the second base fluid measurement (Pb) was made to establish a 0% reduction. After 60 seconds, the friction pressure reducer terpolymer was introduced into the base fluid and the pressure (Ps) was monitored for a total test time of 20 minutes after which the test was terminated.
- the friction pressure reduction (FR) obtained was calculated as a function of time in accordance with the equation below.
- Pb FR Meter gage indication while pumping the base fluid.
- Ps FR Meter gage indication while pumping the fluid sample which contains the friction pressure reducer terpolymer.
- Ph FR Meter gage indication with the pump stopped which represents the hydrostatic pressure.
- Example 2 The tests described in Example 1 above were repeated utilizing a 2% by weight solution of potassium chloride in fresh water. The results of these tests are given in Table II below.
- EXAMPLE 3 The tests described in Example 1 were repeated utilizing a 10% by weight solution of sodium chloride in fresh water. The results of these tests are set forth in Table III below.
- EXAMPLE 4 The tests described in Example 1 above were repeated utilizing a synthetic brine solution.
- the synthetic brine solution utilized was comprised of 10 liters of fresh water having the following compounds dissolved therein in the following amounts: sodium chloride - 1591.1 grams; calcium chloride - 635.48 grams; magnesium chloride - 50.27 grams; potassium chloride - 39.8 grams; barium chloride - 0.288 grams; strontium sulfate - 4.6 grams; strontium chloride - 21.9 grams; and sodium carbonate - 0.3 grams.
- the synthetic brine had a pH of 5.42. The results of these tests are given in Table IV below.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002523090A CA2523090C (en) | 2003-04-21 | 2004-04-15 | Methods, aqueous well treating fluids and friction reducers therefor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/419,455 | 2003-04-21 | ||
US10/419,455 US6784141B1 (en) | 2003-04-21 | 2003-04-21 | Methods, aqueous well treating fluids and friction reducers therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004094556A1 true WO2004094556A1 (en) | 2004-11-04 |
Family
ID=32908368
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2004/001640 WO2004094556A1 (en) | 2003-04-21 | 2004-04-15 | Methods, aqueous well treating fluids and friction reducers therefor |
Country Status (4)
Country | Link |
---|---|
US (1) | US6784141B1 (en) |
AR (1) | AR042566A1 (en) |
CA (1) | CA2523090C (en) |
WO (1) | WO2004094556A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009098668A1 (en) * | 2008-02-08 | 2009-08-13 | Schlumberger Canada Limited | Use of relative permeability modifiers in treating subterranean formations |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
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US7405184B2 (en) * | 2001-12-11 | 2008-07-29 | Southwest Research Institute | Anti-traction, mobility denial methods and products |
US7625848B2 (en) * | 2001-12-11 | 2009-12-01 | Southwest Research Institute | Anti-traction compositions |
AU2003285254A1 (en) * | 2002-12-02 | 2004-06-23 | Genesis International Oilfield Services Inc. | Drilling fluid and methods of use thereof |
US7465360B2 (en) | 2005-05-02 | 2008-12-16 | Southwest Research Institute | Methods for removing a dispersed lubricious coating from a substrate |
US7004254B1 (en) | 2005-06-17 | 2006-02-28 | Halliburton Energy Services, Inc. | Subterranean treatment fluids, friction reducing copolymers, and associated methods |
US7232793B1 (en) | 2005-12-13 | 2007-06-19 | Halliburton Energy Services, Inc. | Water-based polymers for use as friction reducers in aqueous treatment fluids |
US7271134B2 (en) * | 2005-12-13 | 2007-09-18 | Halliburton Energy Services, Inc. | Water-based polymers for use as friction reducers in aqueous treatment fluids |
US8697613B2 (en) * | 2006-03-03 | 2014-04-15 | Halliburton Energy Services, Inc. | Treatment fluids comprising friction reducers and antiflocculation additives and associated methods |
US7806185B2 (en) * | 2006-03-03 | 2010-10-05 | Halliburton Energy Services, Inc. | Treatment fluids comprising friction reducers and antiflocculation additives and associated methods |
CA2658696C (en) * | 2006-08-16 | 2012-07-24 | Halliburton Energy Services, Inc. | Subterranean treatment fluids, friction reducing copolymers, and associated methods |
US7311146B1 (en) | 2006-08-16 | 2007-12-25 | Halliburton Energy Services, Inc. | Subterranean treatment fluids, friction reducing copolymers, and associated methods |
US7504366B2 (en) | 2006-08-16 | 2009-03-17 | Halliburton Energy Services, Inc. | Subterranean treatment fluids, friction reducing copolymers, and associated methods |
US8640774B1 (en) | 2007-02-16 | 2014-02-04 | Wsp Chemicals & Technology, Llc | Method of treating a formation |
US7846878B2 (en) * | 2007-07-17 | 2010-12-07 | Halliburton Energy Services, Inc. | Friction reducer performance in water containing multivalent ions |
US7579302B2 (en) * | 2007-07-17 | 2009-08-25 | Halliburton Energy Services, Inc. | Friction reducer performance by complexing multivalent ions in water |
US20090298720A1 (en) * | 2008-05-27 | 2009-12-03 | Halliburton Energy Services, Inc. | Methods for maintaining fracture conductivity |
US20100200239A1 (en) * | 2009-02-09 | 2010-08-12 | Kemira Chemicals, Inc. | Friction reducing compositions for well treatment fluids and methods of use |
MX358434B (en) | 2011-01-31 | 2018-08-06 | Halliburton Energy Services Inc | Increasing fracture complexity in ultra-low permeable subterranean formation using degradable particulate. |
US9796900B2 (en) | 2011-06-22 | 2017-10-24 | Halliburton Energy Services, Inc. | Alkaline persulfate for low-temperature breaking of polymer viscosified fluid |
US20140148369A1 (en) | 2012-11-28 | 2014-05-29 | Halliburton Energy Services, Inc. | Methods of Treating a Subterranean Formation with Friction Reducing Clays |
US9932513B2 (en) | 2013-01-23 | 2018-04-03 | Haliburton Energy Services, Inc. | Treatment fluids comprising stabilized heteropolysaccharides and related methods |
US9422420B2 (en) | 2013-02-01 | 2016-08-23 | Halliburton Energy Services, Inc. | Low-temperature breaker for well fluid viscosified with a polyacrylamide |
CN104974298B (en) * | 2014-04-10 | 2017-04-26 | 中国石油化工股份有限公司 | Resistance reducing agent for fracture and preparation method thereof |
CN104974737B (en) * | 2014-04-10 | 2018-09-21 | 中国石油化工股份有限公司 | A kind of pressure break friction reducer and preparation method thereof |
WO2017058245A1 (en) | 2015-10-02 | 2017-04-06 | Halliburton Energy Services, Inc. | Methods of controlling well bashing |
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US6627719B2 (en) * | 2001-01-31 | 2003-09-30 | Ondeo Nalco Company | Cationic latex terpolymers for sludge dewatering |
US6702044B2 (en) * | 2002-06-13 | 2004-03-09 | Halliburton Energy Services, Inc. | Methods of consolidating formations or forming chemical casing or both while drilling |
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2003
- 2003-04-21 US US10/419,455 patent/US6784141B1/en not_active Expired - Lifetime
-
2004
- 2004-04-15 CA CA002523090A patent/CA2523090C/en not_active Expired - Fee Related
- 2004-04-15 WO PCT/GB2004/001640 patent/WO2004094556A1/en active Application Filing
- 2004-04-20 AR ARP040101327A patent/AR042566A1/en not_active Application Discontinuation
Patent Citations (4)
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US4152274A (en) * | 1978-02-09 | 1979-05-01 | Nalco Chemical Company | Method for reducing friction loss in a well fracturing process |
EP0501776A1 (en) * | 1991-02-28 | 1992-09-02 | Halliburton Company | Stabilization of subterranean formations |
US5197544A (en) * | 1991-02-28 | 1993-03-30 | Halliburton Company | Method for clay stabilization with quaternary amines |
US20030191030A1 (en) * | 2002-04-03 | 2003-10-09 | Blair Cecil C. | Use of dispersion polymers as friction reducers in aqueous fracturing fluids |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009098668A1 (en) * | 2008-02-08 | 2009-08-13 | Schlumberger Canada Limited | Use of relative permeability modifiers in treating subterranean formations |
Also Published As
Publication number | Publication date |
---|---|
CA2523090A1 (en) | 2004-11-04 |
AR042566A1 (en) | 2005-06-29 |
US6784141B1 (en) | 2004-08-31 |
CA2523090C (en) | 2009-09-08 |
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