CA2283157A1 - Methods and materials for degrading xanthan - Google Patents
Methods and materials for degrading xanthan Download PDFInfo
- Publication number
- CA2283157A1 CA2283157A1 CA002283157A CA2283157A CA2283157A1 CA 2283157 A1 CA2283157 A1 CA 2283157A1 CA 002283157 A CA002283157 A CA 002283157A CA 2283157 A CA2283157 A CA 2283157A CA 2283157 A1 CA2283157 A1 CA 2283157A1
- Authority
- CA
- Canada
- Prior art keywords
- xanthan
- fluid
- wellbore
- enzyme complex
- xanthanase
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- 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
- C09K8/90—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/38—Polysaccharides or derivatives thereof
-
- 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
- C09K8/08—Clay-free compositions containing natural organic compounds, e.g. polysaccharides, or derivatives thereof
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/88—Lyases (4.)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y302/00—Hydrolases acting on glycosyl compounds, i.e. glycosylases (3.2)
- C12Y302/01—Glycosidases, i.e. enzymes hydrolysing O- and S-glycosyl compounds (3.2.1)
- C12Y302/01004—Cellulase (3.2.1.4), i.e. endo-1,4-beta-glucanase
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y402/00—Carbon-oxygen lyases (4.2)
- C12Y402/02—Carbon-oxygen lyases (4.2) acting on polysaccharides (4.2.2)
- C12Y402/02012—Xanthan lyase (4.2.2.12)
-
- 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
- Y10S507/921—Specified breaker component for emulsion or gel
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Zoology (AREA)
- Materials Engineering (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Genetics & Genomics (AREA)
- Wood Science & Technology (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Ceramic Engineering (AREA)
- Biotechnology (AREA)
- Microbiology (AREA)
- Medicinal Chemistry (AREA)
- Biomedical Technology (AREA)
- Inorganic Chemistry (AREA)
- Molecular Biology (AREA)
- Structural Engineering (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Processing Of Solid Wastes (AREA)
- Enzymes And Modification Thereof (AREA)
Abstract
Xanthan molecules are degraded using a xanthanase enzyme complex that is stable at temperatures above 250 °F, such as those temperatures found in some wellbores and process streams. The xanthanase enzyme complex is produced by a novel soil bacterium. The xanthanase enzyme complex may be used to remove xanthan based formation damage, such as drilling filter-cakes and filtrates, or to remove xanthan based filter-cakes and/or residues present in processing equipment. The xanthanase enyzme complex may also be used to reduce the viscosity of xanthan-containing fluids, such as hydraulic fracturing fluids, blocking gels, drilling muds, and process fluids. The xanthanase enzyme complex may also be used in conjunction with other well or process treatments, such as stimulations and cementing operations, to improve the effectiveness of these treatments.
Claims (38)
1. A method for degrading xanthan molecules, comprising the step of:
contacting said molecules with xanthanase enzyme complex produced by a soil bacterium bearing the ATCC No. 55941 under conditions such that at least a portion of said molecules are degraded.
contacting said molecules with xanthanase enzyme complex produced by a soil bacterium bearing the ATCC No. 55941 under conditions such that at least a portion of said molecules are degraded.
2. The method of claim 1, wherein said xanthan molecules are present in a wellbore.
3. The method of claim 1, wherein said xanthan molecules are present in an xanthan-containing aqueous fluid, and wherein a viscosity of said xanthan-containing fluid is reduced during said step of contacting.
4. The method of claim 1, wherein said step of contacting occurs at a temperature of up to about 250°F.
5. The method of claim 1, wherein said step of contacting occurs at a temperature of at least about 150°F and at a pressure at which said enzyme complex is active to degrade said xanthan molecules.
6. The method of claim 1, wherein said step of contacting further comprises the steps of:
forming xanthan-containing fluid by combining said xanthan molecules with an aqueous fluid and said xanthanase enzyme complex; and allowing said xanthanase enzyme complex to degrade at least a portion of said xanthan molecules such that the viscosity of said xanthan-containing fluid is reduced.
forming xanthan-containing fluid by combining said xanthan molecules with an aqueous fluid and said xanthanase enzyme complex; and allowing said xanthanase enzyme complex to degrade at least a portion of said xanthan molecules such that the viscosity of said xanthan-containing fluid is reduced.
7. The method of claim 5, wherein said xanthan-containing fluid is a well treatment fluid, and further comprising the step of:
introducing said xanthan-containing fluid into a wellbore after said step of forming said xanthan-containing fluid.
introducing said xanthan-containing fluid into a wellbore after said step of forming said xanthan-containing fluid.
8. The method of claim 1, further comprising the step of forming xanthan-containing fluid by combining said xanthan molecules with an aqueous fluid, and wherein the step of contacting comprises the steps of:
applying said xanthanase enzyme complex to said xanthan-containing fluid; and allowing said xanthanase enzyme complex to degrade at least a portion of said xanthan molecules contained in said xanthan-containing fluid.
applying said xanthanase enzyme complex to said xanthan-containing fluid; and allowing said xanthanase enzyme complex to degrade at least a portion of said xanthan molecules contained in said xanthan-containing fluid.
9. The method of claim 8, wherein said step of contacting occurs within a wellbore.
10. The method of claim 8, wherein said step of contacting occurs within a refinery process stream.
11. The method of claim 8, further comprising the step of allowing said xanthan-containing fluid to form xanthan-containing filter-cake, xanthan-containing residue, or mixture thereof prior to said step of applying; and wherein said step of applying further comprising the steps of:
applying said xanthanase enzyme complex to said xanthan-containing filter-cake, xanthan-containing residue, or mixture thereof; and allowing said xanthanase enzyme complex to degrade at least a portion of said xanthan molecules contained in said xanthan-containing filter-cake, xanthan-containing residue, or mixture thereof.
applying said xanthanase enzyme complex to said xanthan-containing filter-cake, xanthan-containing residue, or mixture thereof; and allowing said xanthanase enzyme complex to degrade at least a portion of said xanthan molecules contained in said xanthan-containing filter-cake, xanthan-containing residue, or mixture thereof.
12. The method of claim 11, wherein said filter-cake residue or mixture, is found within a subterranean formation which surrounds a well bore, and further comprising the steps of:
allowing production fluids to flow from said well bore;
reducing the flow of said production fluids from said formation below expected flow rates prior to said step of applying; and removing the degraded filter-cake from said subterranean formation to the well surface after said step of applying.
allowing production fluids to flow from said well bore;
reducing the flow of said production fluids from said formation below expected flow rates prior to said step of applying; and removing the degraded filter-cake from said subterranean formation to the well surface after said step of applying.
13. The method of claim 11, wherein said filter-cake, residue or mixture is found within a wellbore, and further comprising the step of introducing cement into said wellbore after said step of allowing.
14. The method of claim 11, wherein said filter-cake, residue or mixture is found within a wellbore, and further comprising the step of introducing a second well treatment into said wellbore after said step of allowing.
15. The method of claim 14, wherein said second well treatment fluid comprises a stimulation fluid.
16. The method of claim 1, wherein said xanthan molecules have repeating units of glucose linked by .beta.-1-4 glucosidic linkages, and wherein said xanthanase enzyme complex attacks said .beta.-1-4 glucosidic linkages.
17. The method of claim 1, wherein said xanthan molecules are present in a fluid containing solid particulate materials stored in a surface storage facility, and further comprising the steps of:
allowing said solid particulate materials to settle in said surface facilities after said step of contacting.
allowing said solid particulate materials to settle in said surface facilities after said step of contacting.
18. The method of claim 17, wherein said fluid is a well treatment fluid.
19. A method of treating xanthan-containing formation damage present in a wellbore or a subterranean formation penetrated by said wellbore, comprising the step of:
introducing into said wellbore a well treatment fluid comprising an xanthanase enzyme complex produced by a soil bacterium culture bearing ATCC No. 55941 under conditions such that at least a portion of said xanthan-containing formation damage is degraded.
introducing into said wellbore a well treatment fluid comprising an xanthanase enzyme complex produced by a soil bacterium culture bearing ATCC No. 55941 under conditions such that at least a portion of said xanthan-containing formation damage is degraded.
20. The method of claim 19, wherein at least a portion of said wellbore is openhole, wherein at least a portion of said formation damage is present in said openhole, and wherein said step of introducing comprises introducing said well treatment fluid into said open hole.
21. The method of claim 19, wherein said step of introducing comprises introducing said well treatment fluid into said wellbore through a concentric string of pipe positioned within said wellbore.
22. The method of claim 19, wherein at least a portion of said wellbore is horizontal or deviated at an angle of greater than about 45° from the vertical.
23. The method of claim 19, wherein said well treatment fluid comprises said xanthanase enzyme complex in an aqueous fluid.
24. The method of claim 19, wherein said xanthan formation damage comprises an xanthan-containing filter-cake or residue, and wherein said step of introducing further comprises the steps of:
injecting said well treatment fluid to a desired location within said wellbore;
allowing said xanthanase enzyme complex to degrade said xanthan formation damage such that said formation damage may be removed from said wellbore or subterranean formation to the well surface.
injecting said well treatment fluid to a desired location within said wellbore;
allowing said xanthanase enzyme complex to degrade said xanthan formation damage such that said formation damage may be removed from said wellbore or subterranean formation to the well surface.
25. The method of claim 19, further comprising the step of introducing cement into said wellbore after said step of introducing said well treatment fluid comprising an xanthanase enzyme complex.
26. The method of claim 19, wherein said formation damage exists in an annular area between an interior surface of said wellbore and a string of pipe present in said wellbore;
wherein said step of introducing comprises the step of circulating said well treatment fluid through said annular area to remove at least a portion of said formation damage; and further comprising the step of:
introducing cement into said annular area to cement said pipe string in said wellbore.
wherein said step of introducing comprises the step of circulating said well treatment fluid through said annular area to remove at least a portion of said formation damage; and further comprising the step of:
introducing cement into said annular area to cement said pipe string in said wellbore.
27. The method of claim 19, further comprising the step of introducing a second well treatment fluid into said wellbore after said step of introducing said xanthanase well treatment fluid into said wellbore.
28. The method of claim 27, wherein said second well treatment fluid comprises a stimulation fluid.
29. A method of reducing a viscosity of an xanthan-containing fluid by degrading xanthan molecules contained within said xanthan-containing fluid, comprising the step of combining said xanthan-containing fluid with an xanthanase enzyme complex produced by a soil bacterium culture bearing ATCC No. 55941 under conditions such that said viscosity of said xanthan-containing fluid is reduced.
30. The method of claim 29, wherein said xanthan-containing fluid is present within a surface vessel or earthen mud or reserve pit.
31. The method of claim 29, wherein said step of combining includes the step of formulating said xanthan-containing fluid by combining said xanthanase enzyme complex with an aqueous fluid and an xanthan-containing polymer; and further comprising the steps of:
introducing said xanthan-containing fluid into a wellbore; and allowing said xanthanase enzyme complex to degrade said xanthan-containing polymer.
introducing said xanthan-containing fluid into a wellbore; and allowing said xanthanase enzyme complex to degrade said xanthan-containing polymer.
32. The method of claim 31, wherein said xanthan containing fluid is a well treatment fluid for at least one of hydraulic fracturing or gravel packing.
33. A method of treating a well penetrating a subterranean formation and having a well surface comprising the steps of:
formulating a gelable fluid by blending together an aqueous fluid, a xanthan polymer, a suitable cross linking agent to form a xanthan polymer gel, and an xanthanase enzyme complex produced by a soil bacterium bearing ATCC No. 55941;
introducing said xanthan polymer gel into said well; and allowing said xanthanase enzyme complex to degrade said xanthan in said-polymer gel, whereby said fluid may be removed from said subterranean formation to said well surface.
formulating a gelable fluid by blending together an aqueous fluid, a xanthan polymer, a suitable cross linking agent to form a xanthan polymer gel, and an xanthanase enzyme complex produced by a soil bacterium bearing ATCC No. 55941;
introducing said xanthan polymer gel into said well; and allowing said xanthanase enzyme complex to degrade said xanthan in said-polymer gel, whereby said fluid may be removed from said subterranean formation to said well surface.
34. The method of claim 33, wherein said gelable fluid is a blocking fluid.
35. The method of claim 33, wherein said gelable fluid is a fracturing fluid.
36. A method for producing an xanthanase enzyme complex, comprising the steps of:
culturing a bacterium bearing ATCC No. 55941 in a medium containing xanthan molecules under conditions suitable for the growth of said bacterium and for the production of xanthanase by said bacterium; and recovering said xanthanase from said medium.
culturing a bacterium bearing ATCC No. 55941 in a medium containing xanthan molecules under conditions suitable for the growth of said bacterium and for the production of xanthanase by said bacterium; and recovering said xanthanase from said medium.
37. An isolated and biologically pure microbial culture obtained from the bacterium bearing ATCC No. 55941.
38. An xanthanase contained in, or produced from, a solution comprising a culture of the bacterium bearing ATCC No. 55941.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/813,064 | 1997-03-07 | ||
US08/813,064 US6110875A (en) | 1997-03-07 | 1997-03-07 | Methods and materials for degrading xanthan |
PCT/US1998/004385 WO1998039397A1 (en) | 1997-03-07 | 1998-03-06 | Methods and materials for degrading xanthan |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2283157A1 true CA2283157A1 (en) | 1998-09-11 |
CA2283157C CA2283157C (en) | 2009-12-15 |
Family
ID=25211365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002283157A Expired - Lifetime CA2283157C (en) | 1997-03-07 | 1998-03-06 | Methods and materials for degrading xanthan |
Country Status (8)
Country | Link |
---|---|
US (1) | US6110875A (en) |
EP (1) | EP0975708B1 (en) |
AU (1) | AU6688898A (en) |
CA (1) | CA2283157C (en) |
DE (2) | DE975708T1 (en) |
DK (1) | DK0975708T3 (en) |
NO (1) | NO328817B1 (en) |
WO (1) | WO1998039397A1 (en) |
Families Citing this family (84)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6818594B1 (en) | 1999-11-12 | 2004-11-16 | M-I L.L.C. | Method for the triggered release of polymer-degrading agents for oil field use |
US20030216263A1 (en) * | 2000-08-30 | 2003-11-20 | Tibbles Raymond J. | Fluids and techniques for hydrocarbon well completion |
US7052901B2 (en) * | 2000-10-31 | 2006-05-30 | Baker Hughes Incorporated | Bacteria-based and enzyme-based mechanisms and products for viscosity reduction breaking of viscoelastic fluids |
US6938693B2 (en) * | 2001-10-31 | 2005-09-06 | Schlumberger Technology Corporation | Methods for controlling screenouts |
EA006928B1 (en) * | 2002-08-15 | 2006-04-28 | Шлюмбергер Текнолоджи Б.В. | Use of distributed temperature sensors during wellbore treatments |
WO2004079145A2 (en) * | 2003-02-26 | 2004-09-16 | Exxonmobil Upstream Research Company | Method for drilling and completing wells |
US6987083B2 (en) * | 2003-04-11 | 2006-01-17 | Halliburton Energy Services, Inc. | Xanthan gels in brines and methods of using such xanthan gels in subterranean formations |
US8541051B2 (en) | 2003-08-14 | 2013-09-24 | Halliburton Energy Services, Inc. | On-the fly coating of acid-releasing degradable material onto a particulate |
US7674753B2 (en) | 2003-09-17 | 2010-03-09 | Halliburton Energy Services, Inc. | Treatment fluids and methods of forming degradable filter cakes comprising aliphatic polyester and their use in subterranean formations |
US7829507B2 (en) | 2003-09-17 | 2010-11-09 | Halliburton Energy Services Inc. | Subterranean treatment fluids comprising a degradable bridging agent and methods of treating subterranean formations |
US7833944B2 (en) | 2003-09-17 | 2010-11-16 | Halliburton Energy Services, Inc. | Methods and compositions using crosslinked aliphatic polyesters in well bore applications |
US7736521B2 (en) * | 2004-03-15 | 2010-06-15 | Total Separation Solutions, Llc | Viscosity control and filtration of well fluids |
US7168494B2 (en) * | 2004-03-18 | 2007-01-30 | Halliburton Energy Services, Inc. | Dissolvable downhole tools |
US7595282B2 (en) * | 2004-05-20 | 2009-09-29 | Halliburton Energy Services, Inc. | Methods and compositions of controlling the rheology of a diutan-containing well treatment fluid at high temperatures |
US7825073B2 (en) * | 2004-07-13 | 2010-11-02 | Halliburton Energy Services, Inc. | Treatment fluids comprising clarified xanthan and associated methods |
US7727936B2 (en) * | 2004-07-13 | 2010-06-01 | Halliburton Energy Services, Inc. | Acidic treatment fluids comprising xanthan and associated methods |
US20060014648A1 (en) * | 2004-07-13 | 2006-01-19 | Milson Shane L | Brine-based viscosified treatment fluids and associated methods |
US7727937B2 (en) | 2004-07-13 | 2010-06-01 | Halliburton Energy Services, Inc. | Acidic treatment fluids comprising xanthan and associated methods |
US7560419B2 (en) * | 2004-11-03 | 2009-07-14 | Halliburton Energy Services, Inc. | Method and biodegradable super absorbent composition for preventing or treating lost circulation |
US7648946B2 (en) | 2004-11-17 | 2010-01-19 | Halliburton Energy Services, Inc. | Methods of degrading filter cakes in subterranean formations |
US20080009423A1 (en) | 2005-01-31 | 2008-01-10 | Halliburton Energy Services, Inc. | Self-degrading fibers and associated methods of use and manufacture |
US8598092B2 (en) | 2005-02-02 | 2013-12-03 | Halliburton Energy Services, Inc. | Methods of preparing degradable materials and methods of use in subterranean formations |
US7662753B2 (en) | 2005-05-12 | 2010-02-16 | Halliburton Energy Services, Inc. | Degradable surfactants and methods for use |
US7713916B2 (en) | 2005-09-22 | 2010-05-11 | Halliburton Energy Services, Inc. | Orthoester-based surfactants and associated methods |
US20070284097A1 (en) | 2006-06-08 | 2007-12-13 | Halliburton Energy Services, Inc. | Consumable downhole tools |
US20080257549A1 (en) | 2006-06-08 | 2008-10-23 | Halliburton Energy Services, Inc. | Consumable Downhole Tools |
US7934556B2 (en) | 2006-06-28 | 2011-05-03 | Schlumberger Technology Corporation | Method and system for treating a subterranean formation using diversion |
US8329621B2 (en) * | 2006-07-25 | 2012-12-11 | Halliburton Energy Services, Inc. | Degradable particulates and associated methods |
BRPI0714876B1 (en) | 2006-08-04 | 2022-04-19 | Verenium Corporation | Isolated, synthetic or recombinant nucleic acid, expression cassette, cloning vector or vehicle, transformed bacterial, fungal or yeast cell, isolated, synthetic or recombinant polypeptide, composition, as well as production methods and uses thereof |
US7686080B2 (en) | 2006-11-09 | 2010-03-30 | Halliburton Energy Services, Inc. | Acid-generating fluid loss control additives and associated methods |
US7661476B2 (en) * | 2006-11-15 | 2010-02-16 | Exxonmobil Upstream Research Company | Gravel packing methods |
US7998908B2 (en) | 2006-12-12 | 2011-08-16 | Schlumberger Technology Corporation | Fluid loss control and well cleanup methods |
US8220548B2 (en) | 2007-01-12 | 2012-07-17 | Halliburton Energy Services Inc. | Surfactant wash treatment fluids and associated methods |
US20080202764A1 (en) | 2007-02-22 | 2008-08-28 | Halliburton Energy Services, Inc. | Consumable downhole tools |
US8413721B2 (en) * | 2007-05-22 | 2013-04-09 | Halliburton Energy Services, Inc. | Viscosified fluids for remediating subterranean damage |
US7472747B1 (en) * | 2007-08-01 | 2009-01-06 | Savannah River Nuclear Solutions, Llc | Biological enhancement of hydrocarbon extraction |
US9140707B2 (en) * | 2007-08-10 | 2015-09-22 | University Of Louisville Research Foundation, Inc. | Sensors and methods for detecting diseases caused by a single point mutation |
US20090050325A1 (en) * | 2007-08-22 | 2009-02-26 | Gray John L | Enzyme enhanced oil recovery (EEOR) for near wellboretreatment of oil and gas with greater than 50% barrel of oil equivalent (BOE) gas production |
US20090062153A1 (en) * | 2007-08-29 | 2009-03-05 | Gray John L | Enzyme enhanced oil/gas recovery (EEOR/EEGR) using non-gel hydraulic fracturing in hydrocarbon producing wells |
US20100300693A1 (en) * | 2007-08-29 | 2010-12-02 | Gray John L | Enzyme Surfactant Fluids Used in Non-Gel Hydraulic Fracturing of Oil Wells |
US20090137429A1 (en) * | 2007-11-26 | 2009-05-28 | Rimassa Shawn Mccleskey | Temperature-Extended Enzyme Systems |
US8327926B2 (en) | 2008-03-26 | 2012-12-11 | Robertson Intellectual Properties, LLC | Method for removing a consumable downhole tool |
US8235102B1 (en) | 2008-03-26 | 2012-08-07 | Robertson Intellectual Properties, LLC | Consumable downhole tool |
US8006760B2 (en) | 2008-04-10 | 2011-08-30 | Halliburton Energy Services, Inc. | Clean fluid systems for partial monolayer fracturing |
US7906464B2 (en) | 2008-05-13 | 2011-03-15 | Halliburton Energy Services, Inc. | Compositions and methods for the removal of oil-based filtercakes |
WO2010001323A1 (en) * | 2008-07-01 | 2010-01-07 | Schlumberger Canada Limited | System, method, and apparatus for injection well clean-up operations |
US7833943B2 (en) | 2008-09-26 | 2010-11-16 | Halliburton Energy Services Inc. | Microemulsifiers and methods of making and using same |
US8361804B2 (en) | 2008-09-29 | 2013-01-29 | M-I L.L.C. | Method and composition for determining hardness in wellbore fluid filtrate |
US8205675B2 (en) | 2008-10-09 | 2012-06-26 | Baker Hughes Incorporated | Method of enhancing fracture conductivity |
US8016040B2 (en) * | 2008-11-26 | 2011-09-13 | Schlumberger Technology Corporation | Fluid loss control |
US20100200237A1 (en) * | 2009-02-12 | 2010-08-12 | Colgate Sam O | Methods for controlling temperatures in the environments of gas and oil wells |
US20100236784A1 (en) * | 2009-03-20 | 2010-09-23 | Horton Robert L | Miscible stimulation and flooding of petroliferous formations utilizing viscosified oil-based fluids |
US20100252259A1 (en) * | 2009-04-01 | 2010-10-07 | Horton Robert L | Oil-based hydraulic fracturing fluids and breakers and methods of preparation and use |
US20100263867A1 (en) * | 2009-04-21 | 2010-10-21 | Horton Amy C | Utilizing electromagnetic radiation to activate filtercake breakers downhole |
US20100307757A1 (en) * | 2009-06-05 | 2010-12-09 | Blow Kristel A | Aqueous solution for controlling bacteria in the water used for fracturing |
US8082992B2 (en) | 2009-07-13 | 2011-12-27 | Halliburton Energy Services, Inc. | Methods of fluid-controlled geometry stimulation |
US8211835B2 (en) | 2009-09-24 | 2012-07-03 | Schlumberger Technology Corporation | Composition and method for slickwater application |
US8486867B2 (en) | 2009-10-15 | 2013-07-16 | Baker Hughes Incorporated | Method of fracturing using mannanohydrolase enzyme breaker |
US8058212B2 (en) * | 2009-10-15 | 2011-11-15 | Baker Hughes Incorporated | Method of fracturing using mannanohydrolase enzyme breaker |
US8371383B2 (en) | 2009-12-18 | 2013-02-12 | Baker Hughes Incorporated | Method of fracturing subterranean formations with crosslinked fluid |
US8517095B2 (en) | 2010-08-09 | 2013-08-27 | Baker Hughes Incorporated | Method of using hexose oxidases to create hydrogen peroxide in aqueous well treatment fluids |
US8833457B2 (en) | 2011-03-08 | 2014-09-16 | Baker Hughes Incorporated | Sulfates and phosphates as allosteric effectors in mannanohydrolase enzyme breakers |
WO2013076242A2 (en) * | 2011-11-23 | 2013-05-30 | Schlumberger Norge As | Test equipment simulating multiple fluid sequences |
US9528044B2 (en) * | 2013-01-04 | 2016-12-27 | Halliburton Energy Services, Inc. | Methods using stimulation-capable drill-in and completion fluids |
WO2014124363A2 (en) | 2013-02-11 | 2014-08-14 | Baker Hughes Incorporated | Method of fracturing subterranean formations with crosslinked fluid |
CA2901517C (en) | 2013-03-08 | 2017-08-29 | Baker Hughes Incorporated | Method of enhancing the complexity of a fracture network within a subterranean formation |
EP2981588B1 (en) | 2013-04-01 | 2018-05-09 | Saudi Arabian Oil Company | Filtercake removal using exothermic in-situ nitrogen-producing reactants |
US10550319B2 (en) | 2013-04-05 | 2020-02-04 | Halliburton Energy Services, Inc. | Wellbore servicing compositions and methods of making and using same |
US10259993B2 (en) | 2013-04-15 | 2019-04-16 | Epygen Labs Fz Llc | Stabilized acid precursor and acid-enzyme formulations for drilling mud cake removal |
US10392553B2 (en) | 2013-08-30 | 2019-08-27 | Baker Hughes, A Ge Company, Llc | Method for enhancing productivity of hydrocarbon formations using fluid containing organometallic crosslinking agent and scale inhibitor |
CN105849359B (en) | 2013-09-26 | 2020-01-07 | 贝克休斯公司 | Method of optimizing flow conductivity in hydraulic fracturing operations |
CA2928641C (en) | 2013-10-25 | 2023-03-14 | Flex-Chem Holding Company, Llc | Method for remediation of subterranean-formed metal-polymer complexes using a metal complexing agent |
EP3132112A4 (en) | 2014-04-14 | 2017-10-04 | Flex-chem Holding Company LLC | Stimulation of wells in nano-darcy shale formations |
US10202828B2 (en) * | 2014-04-21 | 2019-02-12 | Weatherford Technology Holdings, Llc | Self-degradable hydraulic diversion systems and methods for making and using same |
WO2016154363A1 (en) | 2015-03-23 | 2016-09-29 | Baker Hughes Incorporated | Method of enhancing stability of cement slurries in well cementing operations |
US10125303B2 (en) * | 2015-07-31 | 2018-11-13 | Baker Hughes, A Ge Company, Llc | Compositions and methods for cementing a wellbore using microbes or enzymes |
US9845422B2 (en) * | 2015-08-10 | 2017-12-19 | Baker Hughes, A Ge Company, Llc | Methods of delivering calcium carbonate producing microbes or enzymes downhole |
US10400527B2 (en) | 2015-12-10 | 2019-09-03 | Saudi Arabian Oil Company | Downhole in-situ heat generation to remove filtercake |
WO2019022789A1 (en) * | 2017-07-26 | 2019-01-31 | Tjon Joe Pin Robert | Production of xanthan-degrading enzymes and methods of use |
WO2019232341A1 (en) | 2018-05-31 | 2019-12-05 | Baker Hughes, A Ge Company, Llc | Method of fracturing with natural gas |
US11912928B2 (en) | 2019-03-13 | 2024-02-27 | European Mud Company As | Composition for making a drilling fluid a non-invasive drilling fluid |
NO345560B1 (en) * | 2019-03-13 | 2021-04-19 | European Mud Company As | Composition for making a solids-free drilling fluid a non-invasive drilling fluid |
CA3157356A1 (en) | 2019-10-10 | 2021-04-15 | Flex-Chem Holding Company, Llc | Method for remediation of subterranean-formed metal-polymer complexes using peracetic acid |
CN113736775B (en) * | 2021-07-28 | 2023-05-05 | 大连工业大学 | Application of xanthan gum pretreated by using expansin to reduce viscosity of xanthan gum |
Family Cites Families (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2602778A (en) * | 1949-03-10 | 1952-07-08 | Ernest F Snyder | Method and composition for treating wells |
US2681704A (en) * | 1951-01-02 | 1954-06-22 | Paul L Menaul | Treating wells with a substrate |
US2801218A (en) * | 1954-06-18 | 1957-07-30 | Pan American Petroleum Corp | Emulsion gels for well servicing |
US3044550A (en) * | 1957-12-26 | 1962-07-17 | Dow Chemical Co | Method of treating earth formations which are penetrated by a well bore |
US3684710A (en) * | 1969-12-19 | 1972-08-15 | Baxter Laboratories Inc | Mannan depolymerase enzyme combination |
US4119546A (en) * | 1976-08-05 | 1978-10-10 | Pfizer Inc. | Process for producing Xanthomonas hydrophilic colloid, product resulting therefrom, and use thereof in displacement of oil from partially depleted reservoirs |
US4157116A (en) * | 1978-06-05 | 1979-06-05 | Halliburton Company | Process for reducing fluid flow to and from a zone adjacent a hydrocarbon producing formation |
US4160483A (en) * | 1978-07-21 | 1979-07-10 | The Dow Chemical Company | Method of treating a well using fluoboric acid to clean a propped fracture |
US4342866A (en) * | 1979-09-07 | 1982-08-03 | Merck & Co., Inc. | Heteropolysaccharide S-130 |
DE3063779D1 (en) * | 1979-10-26 | 1983-07-21 | Shell Int Research | Xanthanase enzyme and its production |
US4343363A (en) * | 1981-01-02 | 1982-08-10 | Marathon Oil Company | Process for cleaning a subterranean injection surface and for selectively reducing the permeability of a subterranean formation |
US4410625A (en) * | 1982-02-04 | 1983-10-18 | The United States Of America As Represented By The Secretary Of Agriculture | Salt-tolerant microbial xanthanase and method of producing same |
US4502967A (en) * | 1982-09-27 | 1985-03-05 | Halliburton Company | Method and compositions for fracturing subterranean formations |
US4514309A (en) * | 1982-12-27 | 1985-04-30 | Hughes Tool Company | Cross-linking system for water based well fracturing fluids |
US4479543A (en) * | 1983-07-28 | 1984-10-30 | Union Oil Company Of California | Method for deeper penetrating acidizing of siliceous formations |
FR2559832B1 (en) * | 1984-02-17 | 1986-05-30 | Rhone Poulenc Rech | REVERSIBLE PLUGGING OF SUBTERRANEAN FORMATIONS |
US4609475A (en) * | 1984-02-24 | 1986-09-02 | Halliburton Company | Method of improving the permeability of a subterranean formation by removal of polymeric materials therefrom |
US4713449A (en) * | 1985-08-06 | 1987-12-15 | Getty Scientific Development Company | Polysaccharide polymer made by xanthomonas |
US4690891A (en) * | 1985-09-11 | 1987-09-01 | Exxon Research And Engineering Company | Method and the microorganism and enzyme used therein for degrading the xanthan molecule |
US4809783A (en) * | 1988-01-14 | 1989-03-07 | Halliburton Services | Method of dissolving organic filter cake |
US4996153A (en) * | 1988-05-10 | 1991-02-26 | The United States Of America As Represented By The Secretary Of Agriculture | Heat-stable, salt-tolerant microbial xanthanase |
US4886746A (en) * | 1988-05-10 | 1989-12-12 | The United States Of America As Represented By The Secretary Of Agriculture | Heat-stable, salt-tolerant microbial xanthanase |
US4928763A (en) * | 1989-03-31 | 1990-05-29 | Marathon Oil Company | Method of treating a permeable formation |
US5032297A (en) * | 1989-05-19 | 1991-07-16 | Nalco Chemical Company | Enzymatically degradable fluid loss additive |
US5103905A (en) * | 1990-05-03 | 1992-04-14 | Dowell Schlumberger Incorporated | Method of optimizing the conductivity of a propped fractured formation |
AU8060091A (en) * | 1990-05-29 | 1991-12-31 | Chemgen Corporation | Hemicellulase active at extremes of ph and temperature and the means for the production thereof |
US5165477A (en) * | 1990-12-21 | 1992-11-24 | Phillips Petroleum Company | Enzymatic decomposition of drilling mud |
US5126051A (en) * | 1990-12-21 | 1992-06-30 | Phillips Petroleum Company | Enzymatic decomposition of drilling mud |
US5067566A (en) * | 1991-01-14 | 1991-11-26 | Bj Services Company | Low temperature degradation of galactomannans |
US5226479A (en) * | 1992-01-09 | 1993-07-13 | The Western Company Of North America | Fracturing fluid having a delayed enzyme breaker |
US5247995A (en) * | 1992-02-26 | 1993-09-28 | Bj Services Company | Method of dissolving organic filter cake obtained from polysaccharide based fluids used in production operations and completions of oil and gas wells |
US5224544A (en) * | 1992-02-26 | 1993-07-06 | Bj Services Company | Enzyme complex used for breaking crosslinked cellulose based blocking gels at low to moderate temperatures |
US5201370A (en) * | 1992-02-26 | 1993-04-13 | Bj Services Company | Enzyme breaker for galactomannan based fracturing fluid |
US5447197A (en) * | 1994-01-25 | 1995-09-05 | Bj Services Company | Storable liquid cementitious slurries for cementing oil and gas wells |
US5421412A (en) * | 1994-03-10 | 1995-06-06 | North Carolina State University | Methods and compositions for fracturing subterranean formations |
US5441109A (en) * | 1994-04-19 | 1995-08-15 | The Western Company Of North America | Enzyme breakers for breaking fracturing fluids and methods of making and use thereof |
US5562160A (en) * | 1994-08-08 | 1996-10-08 | B. J. Services Company | Fracturing fluid treatment design to optimize fluid rheology and proppant pack conductivity |
US5566759A (en) * | 1995-01-09 | 1996-10-22 | Bj Services Co. | Method of degrading cellulose-containing fluids during completions, workover and fracturing operations of oil and gas wells |
-
1997
- 1997-03-07 US US08/813,064 patent/US6110875A/en not_active Expired - Lifetime
-
1998
- 1998-03-06 DE DE0975708T patent/DE975708T1/en active Pending
- 1998-03-06 WO PCT/US1998/004385 patent/WO1998039397A1/en active IP Right Grant
- 1998-03-06 EP EP98908993A patent/EP0975708B1/en not_active Expired - Lifetime
- 1998-03-06 AU AU66888/98A patent/AU6688898A/en not_active Abandoned
- 1998-03-06 DK DK98908993T patent/DK0975708T3/en active
- 1998-03-06 CA CA002283157A patent/CA2283157C/en not_active Expired - Lifetime
- 1998-03-06 DE DE69828961T patent/DE69828961T2/en not_active Expired - Fee Related
-
1999
- 1999-09-06 NO NO19994319A patent/NO328817B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0975708A1 (en) | 2000-02-02 |
NO328817B1 (en) | 2010-05-18 |
EP0975708A4 (en) | 2002-10-23 |
DE69828961D1 (en) | 2005-03-17 |
EP0975708B1 (en) | 2005-02-09 |
DE975708T1 (en) | 2000-06-29 |
DE69828961T2 (en) | 2006-01-19 |
NO994319D0 (en) | 1999-09-06 |
CA2283157C (en) | 2009-12-15 |
NO994319L (en) | 1999-11-05 |
DK0975708T3 (en) | 2005-05-23 |
US6110875A (en) | 2000-08-29 |
WO1998039397A1 (en) | 1998-09-11 |
AU6688898A (en) | 1998-09-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2283157A1 (en) | Methods and materials for degrading xanthan | |
CA2270556C (en) | Method for improved stimulation treatment | |
US6936454B2 (en) | Compositions for fracturing subterranean formations | |
US4941533A (en) | Subterranean permeability modification by using microbial polysaccharide polymers | |
US5390741A (en) | Remedial treatment methods for coal bed methane wells | |
US5566759A (en) | Method of degrading cellulose-containing fluids during completions, workover and fracturing operations of oil and gas wells | |
US9012378B2 (en) | Apparatus, compositions, and methods of breaking fracturing fluids | |
US2975835A (en) | Bacteriological method of oil recovery | |
EA018191B1 (en) | Method of enhancing oil recovery | |
US3185216A (en) | Use of bacteria in the recovery of petroleum from underground deposits | |
EP0202935B1 (en) | Oil reservoir permeability control using polymeric gels | |
US4460043A (en) | Method of enhancing oil recovery by use of exopolymer producing microorganisms | |
US20010053749A1 (en) | Method of and composition for reducing the loss of fluid during well drilling, completion or workover operations | |
EP0702127A1 (en) | Downhole drilling fluid and filter cake removal | |
GB2283519A (en) | Method of dissolving organic filter cake obtained in drilling and completion of oil and gas wells | |
NO319027B1 (en) | Underground reservoirs | |
WO2009032081A1 (en) | Enzyme enhanced oil recovery (eeor) for near well bore treatment of oil and gas with greater than 50% barrel of oil equivalent (boe) gas production | |
US5032297A (en) | Enzymatically degradable fluid loss additive | |
US5184679A (en) | Gravel packing process | |
WO2019022789A1 (en) | Production of xanthan-degrading enzymes and methods of use | |
US20090050325A1 (en) | Enzyme enhanced oil recovery (EEOR) for near wellboretreatment of oil and gas with greater than 50% barrel of oil equivalent (BOE) gas production | |
EA032578B1 (en) | Well treatment fluid comprising carbohydrate-based thickener, salt and proppant in base liquid, and methods of preparation and use |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20180306 |