GB2117431B - Improvements in or relating to fluid loss reducing additives - Google Patents

Improvements in or relating to fluid loss reducing additives

Info

Publication number
GB2117431B
GB2117431B GB08308498A GB8308498A GB2117431B GB 2117431 B GB2117431 B GB 2117431B GB 08308498 A GB08308498 A GB 08308498A GB 8308498 A GB8308498 A GB 8308498A GB 2117431 B GB2117431 B GB 2117431B
Authority
GB
United Kingdom
Prior art keywords
relating
fluid loss
reducing additives
loss reducing
additives
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
GB08308498A
Other versions
GB8308498D0 (en
GB2117431A (en
Inventor
David Longley Connell
Jacqueline Anne Coates
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.)
Sandoz AG
Original Assignee
Sandoz AG
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 Sandoz AG filed Critical Sandoz AG
Priority to GB08308498A priority Critical patent/GB2117431B/en
Publication of GB8308498D0 publication Critical patent/GB8308498D0/en
Publication of GB2117431A publication Critical patent/GB2117431A/en
Application granted granted Critical
Publication of GB2117431B publication Critical patent/GB2117431B/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
    • C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based

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)
  • Lubricants (AREA)
GB08308498A 1982-03-30 1983-03-28 Improvements in or relating to fluid loss reducing additives Expired GB2117431B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08308498A GB2117431B (en) 1982-03-30 1983-03-28 Improvements in or relating to fluid loss reducing additives

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB8209276 1982-03-30
GB8209275 1982-03-30
GB08308498A GB2117431B (en) 1982-03-30 1983-03-28 Improvements in or relating to fluid loss reducing additives

Publications (3)

Publication Number Publication Date
GB8308498D0 GB8308498D0 (en) 1983-05-05
GB2117431A GB2117431A (en) 1983-10-12
GB2117431B true GB2117431B (en) 1985-09-18

Family

ID=27261541

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08308498A Expired GB2117431B (en) 1982-03-30 1983-03-28 Improvements in or relating to fluid loss reducing additives

Country Status (1)

Country Link
GB (1) GB2117431B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3400164A1 (en) * 1983-01-14 1984-07-19 Sandoz-Patent-GmbH, 7850 Lörrach LIQUID LOSS REDUCING ADDITIVES FOR PUNCHING LIQUIDS
GB8621086D0 (en) * 1986-09-01 1986-10-08 Sandoz Ltd Organic compounds

Also Published As

Publication number Publication date
GB8308498D0 (en) 1983-05-05
GB2117431A (en) 1983-10-12

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930328