GB8720327D0 - Downhole tool - Google Patents

Downhole tool

Info

Publication number
GB8720327D0
GB8720327D0 GB878720327A GB8720327A GB8720327D0 GB 8720327 D0 GB8720327 D0 GB 8720327D0 GB 878720327 A GB878720327 A GB 878720327A GB 8720327 A GB8720327 A GB 8720327A GB 8720327 D0 GB8720327 D0 GB 8720327D0
Authority
GB
United Kingdom
Prior art keywords
downhole tool
downhole
tool
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.)
Withdrawn
Application number
GB878720327A
Other versions
GB2194573A (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB8720327D0 publication Critical patent/GB8720327D0/en
Publication of GB2194573A publication Critical patent/GB2194573A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
GB08720327A 1986-08-28 1987-08-28 Downhole tool Withdrawn GB2194573A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB868620770A GB8620770D0 (en) 1986-08-28 1986-08-28 Downhole tool

Publications (2)

Publication Number Publication Date
GB8720327D0 true GB8720327D0 (en) 1987-10-07
GB2194573A GB2194573A (en) 1988-03-09

Family

ID=10603304

Family Applications (2)

Application Number Title Priority Date Filing Date
GB868620770A Pending GB8620770D0 (en) 1986-08-28 1986-08-28 Downhole tool
GB08720327A Withdrawn GB2194573A (en) 1986-08-28 1987-08-28 Downhole tool

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB868620770A Pending GB8620770D0 (en) 1986-08-28 1986-08-28 Downhole tool

Country Status (1)

Country Link
GB (2) GB8620770D0 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69017958T2 (en) * 1989-06-29 1995-12-14 Well Equip Ltd Borehole impact device.
NO340373B1 (en) 2014-04-11 2017-04-10 Loxley Holding As A cable operated percussion tool for downhole operations and method for operating the percussion tool

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB441904A (en) * 1934-12-28 1936-01-29 James Allen Kammerdiner Straight pull jar for well drilling
GB850210A (en) * 1959-06-22 1960-10-05 Joy Mfg Co Straight pull jar well tool and spring means therefor
GB1370337A (en) * 1970-10-20 1974-10-16 Schlumberger Technoloty Corp Mechanical jar
US3963081A (en) * 1975-04-24 1976-06-15 Anderson Edwin A Double acting mechanical jar
US4304428A (en) * 1976-05-03 1981-12-08 Grigorian Samvel S Tapered screw joint and device for emergency recovery of boring tool from borehole with the use of said joint
US4376468A (en) * 1981-01-12 1983-03-15 Clark George M Drilling jar

Also Published As

Publication number Publication date
GB8620770D0 (en) 1986-10-08
GB2194573A (en) 1988-03-09

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)