ES439650A1 - Aqueous drilling fluids containing an additive for reducing gel strength - Google Patents

Aqueous drilling fluids containing an additive for reducing gel strength

Info

Publication number
ES439650A1
ES439650A1 ES439650A ES439650A ES439650A1 ES 439650 A1 ES439650 A1 ES 439650A1 ES 439650 A ES439650 A ES 439650A ES 439650 A ES439650 A ES 439650A ES 439650 A1 ES439650 A1 ES 439650A1
Authority
ES
Spain
Prior art keywords
additive
approximately
drilling fluids
gel strength
fluids containing
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.)
Expired
Application number
ES439650A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Texaco Development Corp
Original Assignee
Texaco Development Corp
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
Priority claimed from US05/490,435 external-priority patent/US3998742A/en
Application filed by Texaco Development Corp filed Critical Texaco Development Corp
Publication of ES439650A1 publication Critical patent/ES439650A1/en
Expired legal-status Critical Current

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
    • C09K8/02—Well-drilling compositions
    • C09K8/04—Aqueous well-drilling compositions
    • C09K8/14—Clay-containing compositions
    • C09K8/18—Clay-containing compositions characterised by the organic compounds
    • C09K8/20—Natural organic compounds or derivatives thereof, e.g. polysaccharides or lignin derivatives
    • C09K8/206—Derivatives of other natural products, e.g. cellulose, starch, sugars

Abstract

A method of drilling wells in the ground in which a drilling fluid is passed through the well in contact with the land formation during drilling operations, characterized in that said fluid contains less than approximately 200 parts per million soluble calcium and has a pH of at least 10.0, and because it also contains hydrolyzed cereal solids that comprise approximately 15% to 25% by weight of disaccharides, tri-saccharides, and pentasaccharides, and approximately 75 to 85% in weight of hexa-saccharides and the like mentioned above. (Machine-translation by Google Translate, not legally binding)
ES439650A 1974-07-22 1975-07-22 Aqueous drilling fluids containing an additive for reducing gel strength Expired ES439650A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/490,435 US3998742A (en) 1972-12-18 1974-07-22 Additive for reducing gel strength in aqueous drilling fluids

Publications (1)

Publication Number Publication Date
ES439650A1 true ES439650A1 (en) 1977-03-01

Family

ID=23948028

Family Applications (1)

Application Number Title Priority Date Filing Date
ES439650A Expired ES439650A1 (en) 1974-07-22 1975-07-22 Aqueous drilling fluids containing an additive for reducing gel strength

Country Status (8)

Country Link
CA (1) CA1024732A (en)
DE (1) DE2524745A1 (en)
DK (1) DK295375A (en)
ES (1) ES439650A1 (en)
GB (1) GB1464053A (en)
HU (1) HU175426B (en)
NL (1) NL7508610A (en)
NO (1) NO139924C (en)

Families Citing this family (2)

* 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
GB8923082D0 (en) * 1989-10-13 1989-11-29 Ecc Int Ltd Wellbore fluid

Also Published As

Publication number Publication date
HU175426B (en) 1980-07-28
GB1464053A (en) 1977-02-09
DE2524745A1 (en) 1976-02-12
NO752585L (en) 1976-01-23
NL7508610A (en) 1976-01-26
DK295375A (en) 1976-01-23
NO139924C (en) 1979-06-06
NO139924B (en) 1979-02-26
CA1024732A (en) 1978-01-24

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