IE36341L - Dispersing and/or dissolving cellular microorganisms. - Google Patents

Dispersing and/or dissolving cellular microorganisms.

Info

Publication number
IE36341L
IE36341L IE57472A IE57472A IE36341L IE 36341 L IE36341 L IE 36341L IE 57472 A IE57472 A IE 57472A IE 57472 A IE57472 A IE 57472A IE 36341 L IE36341 L IE 36341L
Authority
IE
Ireland
Prior art keywords
treatment
wells
disperse
cell wall
liquid
Prior art date
Application number
IE57472A
Other versions
IE36341B1 (en
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 IE36341L publication Critical patent/IE36341L/en
Publication of IE36341B1 publication Critical patent/IE36341B1/en

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

Abstract

1396031 Wells SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 1 May 1972 [17 May 1971] 20152/72 Heading E1F Cellular micro-organisms which block the formations in earth formations or clog the liquid-conveying or liquid-containing means connected to wells are dissolved or dispersed by treatment with an aqueous solution containing at least one alkali metal hydroxide, a surfactant effective to disperse the outer cell wall of a fatty material containing lipoprotein and lipopolysaccharide and a chelating agent effective to disperse the inner cell wall of a rigid mucopeptide nature. The preferred surfactants are polyethoxylated aliphatic alcohol sulphates while chelating agents exemplified include polyaminopolycarboxylic acids, α-hydroxy acids and condensed polyphosphates. The treatment may be followed by a conventional acidising treatment. [GB1396031A]
IE57472A 1971-05-17 1972-05-01 Dispersing and/or dissolving cellular microorganisms IE36341B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14427571A 1971-05-17 1971-05-17

Publications (2)

Publication Number Publication Date
IE36341L true IE36341L (en) 1972-11-17
IE36341B1 IE36341B1 (en) 1976-10-13

Family

ID=22507860

Family Applications (1)

Application Number Title Priority Date Filing Date
IE57472A IE36341B1 (en) 1971-05-17 1972-05-01 Dispersing and/or dissolving cellular microorganisms

Country Status (5)

Country Link
CA (1) CA968701A (en)
GB (1) GB1396031A (en)
IE (1) IE36341B1 (en)
NL (1) NL7205770A (en)
NO (1) NO137506C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU556313B2 (en) * 1982-12-29 1986-10-30 Stauffer Chemical Company Oil well drilling composition of aqueous alkali/polymer

Also Published As

Publication number Publication date
GB1396031A (en) 1975-05-29
NO137506C (en) 1978-03-08
NO137506B (en) 1977-11-28
CA968701A (en) 1975-06-03
NL7205770A (en) 1972-11-21
IE36341B1 (en) 1976-10-13

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