GB2307653A - Stabilising emulsions - Google Patents

Stabilising emulsions

Info

Publication number
GB2307653A
GB2307653A GB9704696A GB9704696A GB2307653A GB 2307653 A GB2307653 A GB 2307653A GB 9704696 A GB9704696 A GB 9704696A GB 9704696 A GB9704696 A GB 9704696A GB 2307653 A GB2307653 A GB 2307653A
Authority
GB
United Kingdom
Prior art keywords
oil
water
emulsions
muds
silane
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
GB9704696A
Other versions
GB9704696D0 (en
GB2307653B (en
Inventor
Philip Stephen Smith
Julie Ann Hibbert
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.)
Sofitech NV
Original Assignee
Sofitech NV
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 GB9417974A external-priority patent/GB9417974D0/en
Application filed by Sofitech NV filed Critical Sofitech NV
Priority to GB9704696A priority Critical patent/GB2307653B/en
Publication of GB9704696D0 publication Critical patent/GB9704696D0/en
Publication of GB2307653A publication Critical patent/GB2307653A/en
Application granted granted Critical
Publication of GB2307653B publication Critical patent/GB2307653B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based
    • 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
    • C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based
    • C09K8/36—Water-in-oil emulsions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)

Abstract

Drilling muds are employed when drilling an oil well, primarily to carry rock cuttings up to the surface and out of the wellbore. Both water-based and oil-based muds are used, but the latter possess many operational advantages. However, conventional oil-based muds do suffer from a number of undesirable characteristics - the oil may be retained on the drill cuttings, and the presence of large amounts of the essential emulsifiers and other oil wetting agents can alter the wettability of oil-holding reservoir formations through which the borehole passes, thereby reducing their permeability to oil, and so making it more difficult to extract the oil therefrom. The present invention seeks to provide an alternative way of preparing water-in-oil emulsions so that in such emulsions high water levels and high stability can still be achieved but with the use of minimal levels of surfactant. More specifically, the invention suggests that the stability of water-in-oil emulsions may be significantly enhanced by using as a stabilising agent a particular type of silane - thus, first there is formed a water-in-oil emulsion with a fine dispersed aqueous phase in the continuous oil phase, and then there is added to this a silane having bonds which hydrolyse and condense to form a cross-linked polymer at the water-oil interface.
GB9704696A 1994-09-07 1995-08-30 Stabilising emulsions Expired - Fee Related GB2307653B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9704696A GB2307653B (en) 1994-09-07 1995-08-30 Stabilising emulsions

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9417974A GB9417974D0 (en) 1994-09-07 1994-09-07 Method for stabilising emulsions
GB9704696A GB2307653B (en) 1994-09-07 1995-08-30 Stabilising emulsions
PCT/GB1995/002034 WO1996007710A1 (en) 1994-09-07 1995-08-30 Stabilising emulsions

Publications (3)

Publication Number Publication Date
GB9704696D0 GB9704696D0 (en) 1997-04-23
GB2307653A true GB2307653A (en) 1997-06-04
GB2307653B GB2307653B (en) 1999-01-27

Family

ID=26305574

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9704696A Expired - Fee Related GB2307653B (en) 1994-09-07 1995-08-30 Stabilising emulsions

Country Status (1)

Country Link
GB (1) GB2307653B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU876697A1 (en) * 1976-11-10 1981-10-30 Сибирский научно-исследовательский институт нефтяной промышленности Method of producing invert emulsion drilling mud
EP0059037A1 (en) * 1981-02-23 1982-09-01 Dow Corning Corporation Invert emulsions for well-drilling comprising a polydiorganosiloxane and method therefor
GB2113236A (en) * 1981-12-31 1983-08-03 Dow Corning Silicone emulsifier composition invert emulsions therefrom and method therefor
SU1357421A1 (en) * 1986-02-17 1987-12-07 Киевский Политехнический Институт Им.50-Летия Великой Октябрьской Социалистической Революции Reagent for treating invert-emulsion drilling muds
EP0298402A2 (en) * 1987-07-08 1989-01-11 Dow Corning Corporation Cross-linked organopolysiloxanes and emulsions based thereon
CA2093505A1 (en) * 1992-04-14 1993-10-15 David J. Romenesko Invert emulsions for well drilling comprising polydiorganosiloxanes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU876697A1 (en) * 1976-11-10 1981-10-30 Сибирский научно-исследовательский институт нефтяной промышленности Method of producing invert emulsion drilling mud
EP0059037A1 (en) * 1981-02-23 1982-09-01 Dow Corning Corporation Invert emulsions for well-drilling comprising a polydiorganosiloxane and method therefor
GB2113236A (en) * 1981-12-31 1983-08-03 Dow Corning Silicone emulsifier composition invert emulsions therefrom and method therefor
SU1357421A1 (en) * 1986-02-17 1987-12-07 Киевский Политехнический Институт Им.50-Летия Великой Октябрьской Социалистической Революции Reagent for treating invert-emulsion drilling muds
EP0298402A2 (en) * 1987-07-08 1989-01-11 Dow Corning Corporation Cross-linked organopolysiloxanes and emulsions based thereon
CA2093505A1 (en) * 1992-04-14 1993-10-15 David J. Romenesko Invert emulsions for well drilling comprising polydiorganosiloxanes

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Derwent Pub. Ltd., London AN 82-74050E(35) & SU,A,876697 (SIBRE PETRO IND RES), see Abstract. *
Derwent Pub. Ltd., London AN 88-188763(27) & SU,A,1357421 (KIEV POLY) 7/2/1987, see Abstract. *
Derwent Pub. Ltd., London AN 94-008112 & CA,A,2093505 (DOW CORNING CORP.) see Abstract. *

Also Published As

Publication number Publication date
GB9704696D0 (en) 1997-04-23
GB2307653B (en) 1999-01-27

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20110830