CA2505045A1 - Organofunctional compounds for shale stabilization of the aqueous dispersed phase of non-aqueous based invert emulsion drilling system fluids - Google Patents

Organofunctional compounds for shale stabilization of the aqueous dispersed phase of non-aqueous based invert emulsion drilling system fluids Download PDF

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Publication number
CA2505045A1
CA2505045A1 CA002505045A CA2505045A CA2505045A1 CA 2505045 A1 CA2505045 A1 CA 2505045A1 CA 002505045 A CA002505045 A CA 002505045A CA 2505045 A CA2505045 A CA 2505045A CA 2505045 A1 CA2505045 A1 CA 2505045A1
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CA
Canada
Prior art keywords
groups
drilling system
invert emulsion
system fluid
emulsion drilling
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Granted
Application number
CA002505045A
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French (fr)
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CA2505045C (en
Inventor
Jerry L. Summerhill
Michael A. Jarrett
Alexander J. Mckellar
David B. Young
Patrick E. Grover
William J. Gusler
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Baker Hughes Holdings LLC
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Individual
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Publication of CA2505045A1 publication Critical patent/CA2505045A1/en
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Publication of CA2505045C publication Critical patent/CA2505045C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • C09K8/02—Well-drilling compositions
    • C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based
    • C09K8/36—Water-in-oil emulsions
    • 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
    • C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based
    • 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
    • C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based
    • C09K8/34—Organic liquids
    • 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
    • C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
    • C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
    • C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
    • C09K8/48—Density increasing or weighting additives
    • 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
    • C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
    • C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
    • C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
    • C09K8/487—Fluid loss control additives; Additives for reducing or preventing circulation loss
    • 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
    • C09K8/72—Eroding chemicals, e.g. acids
    • C09K8/74—Eroding chemicals, e.g. acids combined with additives added for specific purposes
    • C09K8/76—Eroding chemicals, e.g. acids combined with additives added for specific purposes for preventing or reducing fluid loss
    • 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
    • C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
    • C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating

Abstract

Invert emulsion drilling system fluids comprising an oleaginous continuous phase and a non-oleaginous dispersed phase, the dispersed phase comprising organofunctional compounds(s) effective to provide shale inhibition. The organofunctional compound(s) may be used either as a supplement to or as a substitute for metallic salts.

Claims (30)

1. An invert emulsion drilling system fluid with effective rheology and fluid loss control properties, said drilling system fluid comprising an oleaginous continuous phase and a non-oleaginous dispersed phase, said dispersed phase comprising an amount of at least one organofunctional compound effective to provide shale inhibition.
2. The invert emulsion drilling system fluid of claim 1 selected from the group consisting of a drilling fluid and a drill-in fluid.
3. The invert emulsion drilling system fluid of claim 3 wherein said -oleaginous continuous phase comprises olefins selected from the group consisting of isomerized olefins, linear alpha olefins, and combinations thereof, a majority of said olefins having 16 carbon atoms or more.
4. The invert emulsion drilling system fluid of claim 3 wherein said organofunctional compound has the following general structure:

X~ R ~ Y
wherein X and Y independently are primary functional groups comprising exchangeable groups effective to provide shale inhibition;
R is selected from the group consisting of linear alkylene groups having from about 1 to about 7 carbon atoms and cyclic alkylene groups, wherein R
is either unsubstituted or comprises one or more substituent effective to maintain said exchangeable groups in dissociable form.
5. The drilling system fluid of claim 3 wherein:

X and Y independently are selected from the group consisting of nitrogen containing groups, oxygen containing groups, sulfur containing groups, and phosphorus containing groups; and, R is selected from the group consisting of linear alkylene groups having from 2 to about 6 carbon atoms and cyclic alkylene groups having from about 3 to about 6 carbon atoms.
6. The drilling system fluid of claim 3 wherein:

X and Y independently are selected from the group consisting of amine groups, hydroxyl groups, and salts thereof; and, R is selected from the group consisting of linear alkylene groups having from 2 to about 6 carbon atoms and cyclic alkylene groups having from about 3 to about 6 carbon atoms.
7. The invert emulsion drilling system fluid of claim 3 wherein said organofunctional compound comprising an active ingredient selected from the group consisting of triethanolamine, alkylenediamine, alkylenediamine salts, and combinations thereof.
8. The invert emulsion drilling system fluid of claim 7 wherein said organofunctional compound comprises an alkylene group having from about 1 to about 7 carbon atoms, wherein the carbon atoms comprise an entity selected from the group consisting of a linear entity, a branched entity, and a cycloalkyl entity.
9. The invert emulsion drilling system fluid of claim 8 wherein a majority of said olefins have from about 16 to about 18 carbon atoms.
10. The invert emulsion drilling system fluid of claim 9 further comprising comprising a quantity of a polyolefin amide alkene amine.
11. The invert emulsion drilling system fluid of any of claims 1-9 and 10 wherein said organofunctional compound comprises an active ingredient selected from the group consisting of diaminocyclohexane, salts of diaminocyclohexane, and combinations thereof.
12. The invert emulsion drilling system fluid of claim 11 further comprising comprising a quantity of a polyolefin amide alkene amine.
13. The invert emulsion of any of claims 1-30 and 31 wherein said organofunctional compound comprises hexamethylenediamine.
14. The invert emulsion drilling system fluid of claim 13 further comprising comprising a quantity of a polyolefin amide alkene amine.
15. The invert emulsion of any of claims 1-30 and 31 wherein said organofuncitonal compound comprises CLAYTROL.TM..
16. The invert emulsion drilling system fluid of any of claims 1-30 and 31 wherein said organofunctional compound comprises an active ingredient selected from the groupconsisting of urea, salts of urea, and combinations thereof.
17. The invert emulsion drilling system fluid of claim 3 wherein said organofunctional compound comprises a quantity and type of exchangeable groups effective to provide shale inhibition.
18. The invert emulsion drilling system fluid of claim 17 wherein said organofunctional compound comprises a quantity of primary functional groups effective to provide said quantity and type of exchangeable groups.
19. The invert emulsion drilling system fluid of claim 18 wherein said exchangeable groups are cations.
20. The invert emulsion drilling system fluid of claim 19 wherein said primary functional groups are selected from the group consisting of nitrogen containing groups, oxygen containing groups, sulfur containing groups, and phosphorus containing groups.
21. The invert emulsion drilling system fluid of claim 20 wherein said primary functional groups are selected from the group consisting of amine groups, hydroxyl groups, and salts thereof.
22. The invert emulsion drilling system fluid of any of claims 17-20 and 21 wherein said at least one organofunctional compound comprises at least two primary functional groups comprising a quantity and type of exchangeable groups effective to provide shale inhibition.
23. The invert emulsion drilling system fluid of any of claims 17-20 and 21 further comprising comprising a quantity of a polyolefin amide alkene amine.
24. The invert emulsion drilling system fluid of claim 22 further comprising comprising a quantity of a polyolefin amide alkene amine.
25. A method for reducing the concentration of inorganic salts required to provide shale inhibition during drilling operations using invert emulsion drilling system fluids comprising an oleaginous continuous phase and a non-oleaginous dispersed phase, said method comprising providing said non-oleaginous dispersed phase of said fluid with an amount of an organofunctional compound effective to provide shale inhibition.
26. The method of claim 25 wherein said cationic exchangeable groups are derived from primary functional groups selected from the group consisting of nitrogen containing groups, oxygen containing groups, sulfur containing groups, and phosphorus containing groups.
27. The method of claim 26 wherein said cationic exchangeable groups are derived from primary functional groups selected from the group consisting of amine groups, hydroxyl groups, and salts thereof.
28. The method of claim 27 wherein said organofunctional compound comprises at least two primary functional groups comprising said cationic exchangeable groups.
29. The method of claim 28 wherein said organofunctional compound has the following general structure:

X~R~Y

wherein X and Y independently are primary functional groups comprising exchangeable groups effective to provide shale inhibition;
R is selected from the group consisting of linear alkylene groups having from about 1 to about 7 carbon atoms and cyclic alkylene groups having from about 3 to about 6 carbon atoms, wherein R is either unsubstituted or comprises one or more substituent effective to maintain said exchangeable groups in dissociable form.
30. The method of claim 29 further comprising providing said invert emulsion drilling system fluid with a quantity of a polyolefin amide alkene amine.
CA2505045A 2002-11-14 2003-11-13 Organofunctional compounds for shale stabilization of the aqueous dispersed phase of non-aqueous based invert emulsion drilling system fluids Expired - Fee Related CA2505045C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/294,533 US7067460B2 (en) 2002-11-14 2002-11-14 Organofunctional compounds for shale stabilization of the aqueous dispersed phase of non-aqueous based invert emulsion drilling system fluids
US10/294,533 2002-11-14
PCT/US2003/036417 WO2004046273A2 (en) 2002-11-14 2003-11-13 Organofunctional compounds for shale stabilization of the aqueous dispersed phase of non-aqueous based invert emulsion drilling system fluids

Publications (2)

Publication Number Publication Date
CA2505045A1 true CA2505045A1 (en) 2004-06-03
CA2505045C CA2505045C (en) 2011-01-11

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Family Applications (1)

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CA2505045A Expired - Fee Related CA2505045C (en) 2002-11-14 2003-11-13 Organofunctional compounds for shale stabilization of the aqueous dispersed phase of non-aqueous based invert emulsion drilling system fluids

Country Status (6)

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US (1) US7067460B2 (en)
AU (1) AU2003290898B2 (en)
CA (1) CA2505045C (en)
GB (1) GB2410522B (en)
NO (1) NO20052720L (en)
WO (1) WO2004046273A2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7749945B2 (en) * 2000-06-13 2010-07-06 Baker Hughes Incorporated Invert emulsion drilling fluid systems comprising an emulsified aqueous phase comprising dispersed integral latex particles
BRPI0418995B1 (en) * 2004-08-06 2014-11-11 Lamberti Spa METHOD FOR INHIBITING CLAY HYDRATION IN DRILLING OPERATIONS, AND, WATER-BASED DRILLING FLUID
US20100222241A1 (en) * 2004-08-06 2010-09-02 Lamberti Spa Clay Inhibitors for the Drilling Industry
US7803743B2 (en) * 2005-06-06 2010-09-28 Baker Hughes Incorporated Invert emulsion carrier fluid and oil-wetting agent and method of using same
WO2006136031A1 (en) * 2005-06-24 2006-12-28 Innovative Chemical Technologies Canada Ltd. Clay control additive for wellbore fluids
US8936111B2 (en) 2010-03-06 2015-01-20 Halliburton Energy Services, Inc. Invert drilling fluids having enhanced rheology and methods of drilling boreholes
US8950492B2 (en) * 2011-07-20 2015-02-10 Halliburton Energy Services, Inc. Invert emulsion fluid containing a hygroscopic liquid, a polymeric suspending agent, and low-density solids
US9376608B2 (en) * 2011-07-20 2016-06-28 Halliburton Energy Services, Inc. Invert emulsion drilling fluid containing a hygroscopic liquid and a polymeric suspending agent
CA2862135A1 (en) * 2012-01-02 2013-07-18 Halliburton Energy Services, Inc. Invert drilling fluids having enhanced rheology and methods of drilling boreholes
WO2014186098A1 (en) * 2013-05-14 2014-11-20 Meadwestvaco Corporation Clay inhibitors for drilling, fracturing, and other procedures
WO2015041669A1 (en) 2013-09-20 2015-03-26 Halliburton Energy Services, Inc. Methods for enhancing and maintaining fracture conductivity after fracturing shale formations without proppant placement
WO2018102495A2 (en) 2016-11-30 2018-06-07 Saudi Arabian Oil Company Invert emulsion drilling fluids with fatty acid and fatty diol rheology modifiers
US11319474B2 (en) 2017-02-03 2022-05-03 Saudi Arabian Oil Company Oil-based fluid compositions for hydrocarbon recovery applications

Family Cites Families (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2761835A (en) 1954-11-18 1956-09-04 Gulf Research Development Co Treatment of clays
US2761836A (en) * 1954-11-18 1956-09-04 Gulf Research Development Co Treatment of clays
US2761843A (en) * 1954-11-18 1956-09-04 Gulf Research Development Co Treatment of clays
US2861042A (en) * 1955-08-15 1958-11-18 Socony Mobil Oil Co Inc Emulsion fluid for wells
US3650951A (en) * 1967-06-30 1972-03-21 Armour Ind Chem Co Oil well drilling and treating fluids
US4090887A (en) * 1975-11-25 1978-05-23 E. I. Du Pont De Nemours And Company Pigmented microporous silica microspheres produced by a water in oil emulsion
US4230183A (en) * 1978-12-11 1980-10-28 Texaco Inc. Method for treating subterranean, clay-containing earth formations
US4521452A (en) * 1979-10-25 1985-06-04 Highsmith Ronald E Gel-forming compositions and the use thereof
US4508628A (en) * 1983-05-19 1985-04-02 O'brien-Goins-Simpson & Associates Fast drilling invert emulsion drilling fluids
US4534783A (en) * 1984-01-03 1985-08-13 Monsanto Co. High concentration encapsulation of water soluble-materials
US4579670A (en) * 1984-03-26 1986-04-01 Big Three Industries, Inc. Control of crosslinking reaction rate of aqueous fracturing fluids
US4579671A (en) 1984-09-19 1986-04-01 Exxon Research And Engineering Co. Hydrocarbon soluble polymer complexes useful as viscosifiers in fracturing operations
US4579667A (en) * 1984-11-07 1986-04-01 Hercules Incorporated Gelled aqueous compositions
US4708753A (en) * 1985-12-06 1987-11-24 The Lubrizol Corporation Water-in-oil emulsions
JP2587480B2 (en) * 1988-11-09 1997-03-05 株式会社日本触媒 Additive for drilling mud
US5254531A (en) * 1989-02-09 1993-10-19 Henkel Kommanditgesellschaft Auf Aktien Oleophilic basic amine compounds as an additive for invert drilling muds
US4974678A (en) * 1989-03-28 1990-12-04 Halliburton Company Fluid additive and method for treatment of subterranean formations
US5197544A (en) * 1991-02-28 1993-03-30 Halliburton Company Method for clay stabilization with quaternary amines
US5211239A (en) * 1992-02-13 1993-05-18 Clearwater, Inc. Method of maintaining subterranean formation permeability and inhibiting clay swelling
USH1611H (en) * 1993-11-04 1996-11-05 M-I Drilling Fluids Company Glycols as internal phase in oil well drilling fluids
US5691343A (en) 1995-03-30 1997-11-25 Mayo Foundation For Medical Education And Research Use of topical azathioprine to treat inflammatory bowel disorders
US5605879A (en) * 1995-04-17 1997-02-25 Baker Hughes Incorporated Olefin isomers as lubricants, rate of penetration enhancers, and spotting fluid additives for water-based drilling fluids
US5593953A (en) * 1995-04-26 1997-01-14 The Lubrizol Corporation Friction modifier for oil-based (invert) well drilling fluids and methods of using the same
US5837655A (en) * 1996-05-01 1998-11-17 Halliday; William S. Purified paraffins as lubricants, rate of penetration enhancers, and spotting fluid additives for water-based drilling fluids
US5771971A (en) * 1996-06-03 1998-06-30 Horton; David Clay stabilizing agent and a method of use in subterranean formations to inhibit clay swelling
US5905061A (en) * 1996-08-02 1999-05-18 Patel; Avind D. Invert emulsion fluids suitable for drilling
US6218342B1 (en) * 1996-08-02 2001-04-17 M-I Llc Oil-based drilling fluid
US6339048B1 (en) * 1999-12-23 2002-01-15 Elementis Specialties, Inc. Oil and oil invert emulsion drilling fluids with improved anti-settling properties
US6405809B2 (en) * 1998-01-08 2002-06-18 M-I Llc Conductive medium for openhold logging and logging while drilling
NL1010926C2 (en) * 1998-12-30 2000-07-03 Inst Voor Agrotech Onderzoek Process for the preparation of starch particles.
US6227295B1 (en) * 1999-10-08 2001-05-08 Schlumberger Technology Corporation High temperature hydraulic fracturing fluid
US6609578B2 (en) * 2000-02-11 2003-08-26 Mo M-I Llc Shale hydration inhibition agent and method of use
EA005728B1 (en) * 2001-08-29 2005-06-30 Бейкер Хьюз Инкорпорейтед Lost circulation materials (lcm) effective to maintain emulsion stability of drilling fluid

Also Published As

Publication number Publication date
NO20052720L (en) 2005-06-07
GB2410522A (en) 2005-08-03
GB0509775D0 (en) 2005-06-22
WO2004046273A3 (en) 2004-09-30
GB2410522B (en) 2006-07-05
US20040097380A1 (en) 2004-05-20
AU2003290898B2 (en) 2011-07-21
AU2003290898A1 (en) 2004-06-15
CA2505045C (en) 2011-01-11
US7067460B2 (en) 2006-06-27
WO2004046273A2 (en) 2004-06-03

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