GB2332921B - A jar mechanism - Google Patents

A jar mechanism

Info

Publication number
GB2332921B
GB2332921B GB9902968A GB9902968A GB2332921B GB 2332921 B GB2332921 B GB 2332921B GB 9902968 A GB9902968 A GB 9902968A GB 9902968 A GB9902968 A GB 9902968A GB 2332921 B GB2332921 B GB 2332921B
Authority
GB
United Kingdom
Prior art keywords
jar mechanism
jar
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 - Lifetime
Application number
GB9902968A
Other versions
GB9902968D0 (en
GB2332921A (en
Inventor
Niels Christian Olaf Friis
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.)
International Petroleum Equipment Ltd
Original Assignee
International Petroleum Equipment Ltd
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 GBGB9619722.3A external-priority patent/GB9619722D0/en
Application filed by International Petroleum Equipment Ltd filed Critical International Petroleum Equipment Ltd
Priority to GB9902968A priority Critical patent/GB2332921B/en
Publication of GB9902968D0 publication Critical patent/GB9902968D0/en
Publication of GB2332921A publication Critical patent/GB2332921A/en
Application granted granted Critical
Publication of GB2332921B publication Critical patent/GB2332921B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • E21B31/107—Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars
    • E21B31/113—Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars hydraulically-operated
    • E21B31/1135—Jars with a hydraulic impedance mechanism, i.e. a restriction, for initially delaying escape of a restraining fluid

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid-Damping Devices (AREA)
GB9902968A 1996-09-20 1997-09-18 A jar mechanism Expired - Lifetime GB2332921B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9902968A GB2332921B (en) 1996-09-20 1997-09-18 A jar mechanism

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9619722.3A GB9619722D0 (en) 1996-09-20 1996-09-20 Jar mechanism
GB9902968A GB2332921B (en) 1996-09-20 1997-09-18 A jar mechanism
PCT/GB1997/002531 WO1998012414A2 (en) 1996-09-20 1997-09-18 Double acting hydraulic jar

Publications (3)

Publication Number Publication Date
GB9902968D0 GB9902968D0 (en) 1999-03-31
GB2332921A GB2332921A (en) 1999-07-07
GB2332921B true GB2332921B (en) 2001-03-07

Family

ID=26310078

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9902968A Expired - Lifetime GB2332921B (en) 1996-09-20 1997-09-18 A jar mechanism

Country Status (1)

Country Link
GB (1) GB2332921B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2521993C1 (en) * 2013-02-05 2014-07-10 Общество с ограниченной ответственностью "Фирма "Радиус-Сервис" Dual-acting hydraulic jar
RU186752U1 (en) * 2018-05-21 2019-01-31 Общество С Ограниченной Ответственностью "Вниибт-Буровой Инструмент" YAS HYDRAULIC

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3221826A (en) * 1963-12-10 1965-12-07 Houston Engineers Inc Fluid pressure one-way jar
US4109736A (en) * 1976-06-11 1978-08-29 Webb Derrel D Double acting jar
US4456081A (en) * 1982-08-02 1984-06-26 Newman James L Hydraulic drilling jar
US5033557A (en) * 1990-05-07 1991-07-23 Anadrill, Inc. Hydraulic drilling jar
GB2286212A (en) * 1994-01-27 1995-08-09 Houston Engineers Inc Hydraulic jar

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3221826A (en) * 1963-12-10 1965-12-07 Houston Engineers Inc Fluid pressure one-way jar
US4109736A (en) * 1976-06-11 1978-08-29 Webb Derrel D Double acting jar
US4456081A (en) * 1982-08-02 1984-06-26 Newman James L Hydraulic drilling jar
US5033557A (en) * 1990-05-07 1991-07-23 Anadrill, Inc. Hydraulic drilling jar
GB2286212A (en) * 1994-01-27 1995-08-09 Houston Engineers Inc Hydraulic jar

Also Published As

Publication number Publication date
GB9902968D0 (en) 1999-03-31
GB2332921A (en) 1999-07-07

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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)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20151022 AND 20151028

PE20 Patent expired after termination of 20 years

Expiry date: 20170917