IT1186789B - Processo per la degradazione di una formulazione di polisaccaride di origine microbica,viscosa,un processo per preparare una formulazione di polisaccaride degradabile con acido,e una formulazione di polisaccaride in tal modo ottenuta - Google Patents

Processo per la degradazione di una formulazione di polisaccaride di origine microbica,viscosa,un processo per preparare una formulazione di polisaccaride degradabile con acido,e una formulazione di polisaccaride in tal modo ottenuta

Info

Publication number
IT1186789B
IT1186789B IT22746/85A IT2274685A IT1186789B IT 1186789 B IT1186789 B IT 1186789B IT 22746/85 A IT22746/85 A IT 22746/85A IT 2274685 A IT2274685 A IT 2274685A IT 1186789 B IT1186789 B IT 1186789B
Authority
IT
Italy
Prior art keywords
formulation
polysaccharide
polyesaccharide
microbic
degradable
Prior art date
Application number
IT22746/85A
Other languages
English (en)
Other versions
IT8522746A0 (it
Inventor
Zanten Marinus Van
Jeffrey Bernard Pedley
Phillip Leslie Sturla
Original Assignee
Shell Int Research
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 Shell Int Research filed Critical Shell Int Research
Publication of IT8522746A0 publication Critical patent/IT8522746A0/it
Application granted granted Critical
Publication of IT1186789B publication Critical patent/IT1186789B/it

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
    • C09K8/905—Biopolymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
    • C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
    • C08B37/0024—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid beta-D-Glucans; (beta-1,3)-D-Glucans, e.g. paramylon, coriolan, sclerotan, pachyman, callose, scleroglucan, schizophyllan, laminaran, lentinan or curdlan; (beta-1,6)-D-Glucans, e.g. pustulan; (beta-1,4)-D-Glucans; (beta-1,3)(beta-1,4)-D-Glucans, e.g. lichenan; Derivatives thereof
    • C08B37/0033—Xanthan, i.e. D-glucose, D-mannose and D-glucuronic acid units, saubstituted with acetate and pyruvate, with a main chain of (beta-1,4)-D-glucose units; Derivatives thereof
    • 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)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Biochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
IT22746/85A 1984-11-09 1985-11-07 Processo per la degradazione di una formulazione di polisaccaride di origine microbica,viscosa,un processo per preparare una formulazione di polisaccaride degradabile con acido,e una formulazione di polisaccaride in tal modo ottenuta IT1186789B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB848428348A GB8428348D0 (en) 1984-11-09 1984-11-09 Degrading of viscous microbial polysaccharide formulation

Publications (2)

Publication Number Publication Date
IT8522746A0 IT8522746A0 (it) 1985-11-07
IT1186789B true IT1186789B (it) 1987-12-16

Family

ID=10569486

Family Applications (1)

Application Number Title Priority Date Filing Date
IT22746/85A IT1186789B (it) 1984-11-09 1985-11-07 Processo per la degradazione di una formulazione di polisaccaride di origine microbica,viscosa,un processo per preparare una formulazione di polisaccaride degradabile con acido,e una formulazione di polisaccaride in tal modo ottenuta

Country Status (10)

Country Link
US (1) US4754809A (it)
AU (1) AU586199B2 (it)
CA (1) CA1251628A (it)
DE (1) DE3539548C2 (it)
GB (2) GB8428348D0 (it)
IT (1) IT1186789B (it)
NL (1) NL8503065A (it)
NO (1) NO163105C (it)
NZ (1) NZ214104A (it)
OA (1) OA08133A (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4874044A (en) * 1988-10-11 1989-10-17 Texaco Inc. Method for oil recovery using a modified heteropolysaccharide
US4846981A (en) * 1988-12-19 1989-07-11 Texaco Inc. Method of restoring permeability around wellbores
US5082056A (en) * 1990-10-16 1992-01-21 Marathon Oil Company In situ reversible crosslinked polymer gel used in hydrocarbon recovery applications
FR2678939B1 (fr) * 1991-07-10 1993-10-08 Rhone Poulenc Chimie Composition derivant d'un succinoglycane, son procede de preparation et ses applications.
US5184679A (en) * 1991-11-27 1993-02-09 Shell Oil Company Gravel packing process
US7195071B2 (en) * 2003-08-05 2007-03-27 Halliburton Energy Services, Inc. Enzyme compositions and methods of using these compositions to degrade succinoglycan
BR112016000967A2 (pt) 2013-07-17 2017-08-29 Bp Exploration Operating Co Ltd Método de recuperação de óleo

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3236305A (en) * 1963-05-27 1966-02-22 Dow Chemical Co Method of acidizing wells
US3633689A (en) * 1970-05-27 1972-01-11 Exxon Production Research Co Method for drilling wells
US3675717A (en) * 1971-01-13 1972-07-11 Gulf Research Development Co Method of gravel packing wells
US3986964A (en) * 1973-06-11 1976-10-19 Texas Brine Corporation Method of well drilling and composition therefor
US3953336A (en) * 1973-09-07 1976-04-27 Amoco Production Company Drilling fluid
US3892275A (en) * 1974-01-24 1975-07-01 Shell Oil Co Self-thinning and neutralizing thickened aqueous liquid
US3988246A (en) * 1974-05-24 1976-10-26 Chemical Additives Company Clay-free thixotropic wellbore fluid
US4046197A (en) * 1976-05-03 1977-09-06 Exxon Production Research Company Well completion and workover method
GB1549734A (en) * 1977-06-02 1979-08-08 Int Drilling Fluids Ltd Preparation of slurries
PT69430A (en) * 1978-04-13 1979-05-01 Merck & Co Inc Process for preparing a xanthan gum with low calcium content
NL7907884A (nl) * 1978-11-06 1980-05-08 Pfizer Werkwijze voor de bereiding van een de beweeglijkheid regelende oplossing ten gebruike bij het winnen van olie.
US4350601A (en) * 1979-03-26 1982-09-21 The Dow Chemical Co. Preparation of viscosifiers for zinc salt workover and completion brines
US4420406A (en) * 1980-06-20 1983-12-13 Nl Industries, Inc. Thickened heavy brines
US4336146A (en) * 1980-08-25 1982-06-22 Hercules Incorporated Method of thickening heavy brine solutions
US4476032A (en) * 1981-05-08 1984-10-09 Nl Industries, Inc. Method of increasing the rate of hydration of activated hydroethyl cellulose compositions
GB2121092B (en) * 1981-10-16 1985-07-03 Nl Industries Inc Thickened heavy brines
US4394273A (en) * 1981-12-10 1983-07-19 Nl Industries, Inc. Defoamers for aqueous liquids containing soluble zinc salts
US4459214A (en) * 1981-12-14 1984-07-10 Nl Industries, Inc. Viscous heavy brines
AU553448B2 (en) * 1981-12-14 1986-07-17 N L Industries Inc. Viscous heavy brines
AU553329B2 (en) * 1982-03-11 1986-07-10 Baroid Technology, Inc. Brines containing hydroxyethyl cellulose
US4450908A (en) * 1982-04-30 1984-05-29 Phillips Petroleum Company Enhanced oil recovery process using microorganisms

Also Published As

Publication number Publication date
IT8522746A0 (it) 1985-11-07
US4754809A (en) 1988-07-05
NZ214104A (en) 1988-10-28
NL8503065A (nl) 1986-06-02
CA1251628A (en) 1989-03-28
GB8428348D0 (en) 1984-12-19
GB2167079A (en) 1986-05-21
NO854430L (no) 1986-05-12
DE3539548A1 (de) 1986-05-15
AU586199B2 (en) 1989-07-06
NO163105C (no) 1990-04-04
GB2167079B (en) 1988-05-25
NO163105B (no) 1989-12-27
DE3539548C2 (de) 1994-09-15
OA08133A (en) 1987-03-31
AU4944085A (en) 1986-05-15
GB8527444D0 (en) 1985-12-11

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