DE69634399D1 - Zirkulationsstück - Google Patents

Zirkulationsstück

Info

Publication number
DE69634399D1
DE69634399D1 DE69634399T DE69634399T DE69634399D1 DE 69634399 D1 DE69634399 D1 DE 69634399D1 DE 69634399 T DE69634399 T DE 69634399T DE 69634399 T DE69634399 T DE 69634399T DE 69634399 D1 DE69634399 D1 DE 69634399D1
Authority
DE
Germany
Prior art keywords
circulation piece
circulation
piece
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
DE69634399T
Other languages
English (en)
Other versions
DE69634399T2 (de
Inventor
Andrew Mcdonald
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.)
National Oilwell Varco UK Ltd
Original Assignee
National Oilwell Varco UK 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 GBGB9517841.4A external-priority patent/GB9517841D0/en
Priority claimed from GBGB9613894.6A external-priority patent/GB9613894D0/en
Application filed by National Oilwell Varco UK Ltd filed Critical National Oilwell Varco UK Ltd
Publication of DE69634399D1 publication Critical patent/DE69634399D1/de
Application granted granted Critical
Publication of DE69634399T2 publication Critical patent/DE69634399T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
    • E21B23/004—Indexing systems for guiding relative movement between telescoping parts of downhole tools
    • E21B23/006—"J-slot" systems, i.e. lug and slot indexing mechanisms
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/10—Valve arrangements in drilling-fluid circulation systems
    • E21B21/103—Down-hole by-pass valve arrangements, i.e. between the inside of the drill string and the annulus
DE1996634399 1995-09-01 1996-09-02 Zirkulationsstück Expired - Lifetime DE69634399T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB9517841 1995-09-01
GBGB9517841.4A GB9517841D0 (en) 1995-09-01 1995-09-01 A circulating sub apparatus
GB9613894 1996-07-03
GBGB9613894.6A GB9613894D0 (en) 1996-07-03 1996-07-03 A circulating sub apparatus

Publications (2)

Publication Number Publication Date
DE69634399D1 true DE69634399D1 (de) 2005-04-07
DE69634399T2 DE69634399T2 (de) 2005-12-29

Family

ID=26307669

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1996634399 Expired - Lifetime DE69634399T2 (de) 1995-09-01 1996-09-02 Zirkulationsstück

Country Status (2)

Country Link
EP (1) EP0787888B1 (de)
DE (1) DE69634399T2 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9913370D0 (en) * 1999-06-10 1999-08-11 Nat Oilwell Uk Ltd A circulating sub apparatus and method
US6349763B1 (en) * 1999-08-20 2002-02-26 Halliburton Energy Services, Inc. Electrical surface activated downhole circulating sub
WO2003062590A1 (en) 2002-01-22 2003-07-31 Presssol Ltd. Two string drilling system using coil tubing
US6834726B2 (en) * 2002-05-29 2004-12-28 Weatherford/Lamb, Inc. Method and apparatus to reduce downhole surge pressure using hydrostatic valve
GB0312180D0 (en) 2003-05-28 2003-07-02 Specialised Petroleum Serv Ltd Drilling sub
RU2440482C1 (ru) 2007-11-20 2012-01-20 Нэшенл Ойлвел Варко, эЛ.Пи. Скважинный инструмент для циркуляции текучей среды в стволе скважины, система циркуляции текучей среды в стволе скважины и способ циркуляции текучей среды в стволе скважины (варианты)
US20200308919A1 (en) 2016-06-22 2020-10-01 Advancetech Aps Downhole Tool with Directional Nozzle and a Drill String Thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4298077A (en) * 1979-06-11 1981-11-03 Smith International, Inc. Circulation valve for in-hole motors
FR2458670A1 (fr) * 1979-06-13 1981-01-02 Foraflex Dispositif de carottage a la turbine avec tube suiveur
US4632187A (en) * 1984-05-24 1986-12-30 Otis Engineering Corporation Well safety and kill valve
US5443129A (en) * 1994-07-22 1995-08-22 Smith International, Inc. Apparatus and method for orienting and setting a hydraulically-actuatable tool in a borehole
GB9505998D0 (en) * 1995-03-24 1995-05-10 Uwg Ltd Flow control tool

Also Published As

Publication number Publication date
EP0787888B1 (de) 2005-03-02
EP0787888A2 (de) 1997-08-06
DE69634399T2 (de) 2005-12-29
EP0787888A3 (de) 1998-05-20

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition