CA2372329A1 - Methods and compositions for treating subterranean formations with gelled hydrocarbon fluids - Google Patents

Methods and compositions for treating subterranean formations with gelled hydrocarbon fluids Download PDF

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Publication number
CA2372329A1
CA2372329A1 CA002372329A CA2372329A CA2372329A1 CA 2372329 A1 CA2372329 A1 CA 2372329A1 CA 002372329 A CA002372329 A CA 002372329A CA 2372329 A CA2372329 A CA 2372329A CA 2372329 A1 CA2372329 A1 CA 2372329A1
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CA
Canada
Prior art keywords
gel
reducing agent
additive
sodium
salts
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
Application number
CA002372329A
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French (fr)
Other versions
CA2372329C (en
Inventor
Robert S. Taylor
Gary P. Funkhouser
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Halliburton Energy Services Inc
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Halliburton Energy Services Inc
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Filing date
Publication date
Application filed by Halliburton Energy Services Inc filed Critical Halliburton Energy Services Inc
Publication of CA2372329A1 publication Critical patent/CA2372329A1/en
Application granted granted Critical
Publication of CA2372329C publication Critical patent/CA2372329C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C09K8/60—Compositions for stimulating production by acting on the underground formation
    • C09K8/62—Compositions for forming crevices or fractures
    • C09K8/64—Oil-based compositions
    • 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
    • Y10S507/902—Controlled release agent
    • 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
    • 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
    • Y10S507/922—Fracture fluid

Abstract

Improved methods and compositions for treating subterranean formations penetrated by well bores are provided. A method for breaking a gelled hydrocarbon fluid comprised of a hydrocarbon liquid, a ferric iron or aluminum polyvalent metal salt of a phosphoric or phosphoric acid ester is provided.

Claims (20)

1. An additive for causing a water-containing liquid hydrocarbon gel formed with a gelling agent comprised of a ferric iron polyvalent metal salt of a phosphoric acid ester or of a phosphoric acid ester to break and revert to a thin fluid comprising a water soluble reducing agent which upon dissolving in said water and contacting said liquid hydrocarbon gel reduces the ferric iron in the gel to ferrous iron.
2. The additive of claim 1 wherein said reducing agent is selected from the group consisting of stannous chloride, thioglycolic acid and its salts, hydrazine sulfate, sodium diethyldithiocarbamate, sodium dimethyldithiocarbaxnate, sodium hypophosphite, potassium iodide, hydroxylamine hydrochloride, thioglycol, ascorbic acid and its salts, sodium thiosulfate, sodium dithionite and sodium sulfite.
3. The additive of claim 1 wherein said reducing agent is selected from the group of thioglycol thioglycolic acid or its salts and ascorbic acid or its salts.
4. The additive of claim 1 wherein said reducing agent is stannous chloride.
5. The additive of claim 1 wherein said reducing agent is hydroxylamine hydrochloride.
6. The additive of claim 1 wherein said reducing agent is sodium hypophosphite.
7. The additive of claim l wherein said reducing agent is potassium iodide.
8. The additive of claim 1 wherein the water solubility of said reducing agent is delayed by encapsulating said reducing agent with a slowly water soluble material.
9. The additive of claim 1 wherein said reducing agent is thioglycolic acid and the water solubility of said thioglycolic acid is delayed by forming it into a slowly water soluble salt.
10. In a liquid hydrocarbon gel comprised of a hydrocarbon liquid, a ferric iron polyvalent metal salt of a phosphoric acid ester, water and an additive for breaking said gel into a thin fluid, the improvement which comprises:
said additive for breaking said gel being a water soluble reducing agent which upon dissolving in said water and contacting said liquid hydrocarbon gel reduces said ferric iron in the gel to ferrous iron.
11. The gel of claim 10 wherein said reducing agent is selected from the group consisting of stannous chloride, thioglycolic acid and its salts, hydrazine sulfate, odium diethyldithiocarbamate, sodium dimethyldithiocarbamate, sodium hydrophosphite, potassium iodide, hydroxylamine hydrochloride, thioglycol, ascorbic acid and its salts, sodium thiosulfate, sodium dithionite, and sodium sulfite.
12. The gel of claim 10 wherein said reducing agent is thioglycolic acid and its salts.
13. The gel of claim 10 wherein said reducing agent is stannous chloride.
14. The gel of claim 10 wherein said reducing agent is hydrazine sulfate.
15. The gel of claim 10 wherein said reducing agent is sodium hypophosphite.
16. The gel of claim 10 wherein said reducing agent is potassium iodide.
17. The gel of claim 10 wherein the water solubility of said reducing agent is delayed by encapsulating said reducing agent with a slowly water soluble material.
18. The gel of claim 10 wherein said reducing agent is thioglycolic acid and the water solubility of said thioglycolic acid is delayed by forming it into a slowly water soluble salt.
19. The gel of claim 10 wherein said hydrocarbon liquid is selected from the group consisting, of olefins, kerosene, diesel oil, gas oil, fuel oil, petroleum distillate, and crude oil.
20. The gel of claim l0 wherein said additive is present in said gel in an amount in the range of from about 0.01 % to about 3% by weight of hydrocarbon liquid in said gel.
CA2372329A 2001-02-23 2002-02-20 Methods and compositions for treating subterranean formations with gelled hydrocarbon fluids Expired - Lifetime CA2372329C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/792,165 US6544934B2 (en) 2001-02-23 2001-02-23 Methods and compositions for treating subterranean formations with gelled hydrocarbon fluids
US09/792,165 2001-02-23

Publications (2)

Publication Number Publication Date
CA2372329A1 true CA2372329A1 (en) 2002-08-23
CA2372329C CA2372329C (en) 2010-08-10

Family

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Family Applications (1)

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CA2372329A Expired - Lifetime CA2372329C (en) 2001-02-23 2002-02-20 Methods and compositions for treating subterranean formations with gelled hydrocarbon fluids

Country Status (8)

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US (2) US6544934B2 (en)
EP (1) EP1234948B1 (en)
AU (1) AU775517B2 (en)
BR (1) BR0200470A (en)
CA (1) CA2372329C (en)
CO (1) CO5370699A1 (en)
DK (1) DK1234948T3 (en)
NO (1) NO20020798L (en)

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Publication number Priority date Publication date Assignee Title
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Also Published As

Publication number Publication date
EP1234948B1 (en) 2014-01-01
NO20020798L (en) 2002-08-26
US7314850B2 (en) 2008-01-01
US6544934B2 (en) 2003-04-08
DK1234948T3 (en) 2014-03-03
BR0200470A (en) 2002-10-29
CO5370699A1 (en) 2004-02-27
AU1556202A (en) 2002-08-29
US20030228985A1 (en) 2003-12-11
NO20020798D0 (en) 2002-02-18
CA2372329C (en) 2010-08-10
AU775517B2 (en) 2004-08-05
US20020160921A1 (en) 2002-10-31
EP1234948A1 (en) 2002-08-28

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