GB1295373A - - Google Patents

Info

Publication number
GB1295373A
GB1295373A GB1295373DA GB1295373A GB 1295373 A GB1295373 A GB 1295373A GB 1295373D A GB1295373D A GB 1295373DA GB 1295373 A GB1295373 A GB 1295373A
Authority
GB
United Kingdom
Prior art keywords
sleeve
ports
drill
drilling
blocked
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
Other languages
English (en)
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 filed Critical
Publication of GB1295373A publication Critical patent/GB1295373A/en
Expired 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
GB1295373D 1969-12-23 1970-11-18 Expired GB1295373A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6944546A FR2071262A5 (enrdf_load_stackoverflow) 1969-12-23 1969-12-23

Publications (1)

Publication Number Publication Date
GB1295373A true GB1295373A (enrdf_load_stackoverflow) 1972-11-08

Family

ID=9045022

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1295373D Expired GB1295373A (enrdf_load_stackoverflow) 1969-12-23 1970-11-18

Country Status (2)

Country Link
FR (1) FR2071262A5 (enrdf_load_stackoverflow)
GB (1) GB1295373A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004022906A1 (en) * 2002-09-03 2004-03-18 Paul Bernard Lee Dart-operated big bore by-pass valve
GB2405887A (en) * 2003-09-15 2005-03-16 Schlumberger Holdings Downhole well tool debris removal system using a discharged fluid

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2434922A1 (fr) * 1978-08-28 1980-03-28 Inst Francais Du Petrole Dispositif inverseur du sens de circulation d'un fluide au niveau d'un outil de forage

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004022906A1 (en) * 2002-09-03 2004-03-18 Paul Bernard Lee Dart-operated big bore by-pass valve
GB2405887A (en) * 2003-09-15 2005-03-16 Schlumberger Holdings Downhole well tool debris removal system using a discharged fluid
GB2405887B (en) * 2003-09-15 2005-12-28 Schlumberger Holdings Well tool protection system and method
US7231986B2 (en) 2003-09-15 2007-06-19 Schlumberger Technology Corporation Well tool protection system and method
US7404446B2 (en) 2003-09-15 2008-07-29 Schlumberger Technology Corporation Well tool protection system and method

Also Published As

Publication number Publication date
FR2071262A5 (enrdf_load_stackoverflow) 1971-09-17

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees