EP0465072A3 - Adjustable bent sub - Google Patents

Adjustable bent sub Download PDF

Info

Publication number
EP0465072A3
EP0465072A3 EP19910305677 EP91305677A EP0465072A3 EP 0465072 A3 EP0465072 A3 EP 0465072A3 EP 19910305677 EP19910305677 EP 19910305677 EP 91305677 A EP91305677 A EP 91305677A EP 0465072 A3 EP0465072 A3 EP 0465072A3
Authority
EP
European Patent Office
Prior art keywords
bent sub
adjustable bent
adjustable
sub
bent
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Withdrawn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
EP19910305677
Other versions
EP0465072A2 (en
Inventor
Michael Wawrzynowski
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.)
Canadian Fracmaster Ltd
Original Assignee
Canadian Fracmaster 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
Application filed by Canadian Fracmaster Ltd filed Critical Canadian Fracmaster Ltd
Publication of EP0465072A2 publication Critical patent/EP0465072A2/en
Publication of EP0465072A3 publication Critical patent/EP0465072A3/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Withdrawn legal-status Critical Current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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/06—Deflecting the direction of boreholes
    • E21B7/067—Deflecting the direction of boreholes with means for locking sections of a pipe or of a guide for a shaft in angular relation, e.g. adjustable bent sub
EP19910305677 1990-06-26 1991-06-24 Adjustable bent sub Withdrawn EP0465072A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA2019898 1990-06-26
CA002019898A CA2019898A1 (en) 1990-06-26 1990-06-26 Adjustable bent sub

Publications (2)

Publication Number Publication Date
EP0465072A2 EP0465072A2 (en) 1992-01-08
EP0465072A3 true EP0465072A3 (en) 1992-12-16

Family

ID=4145345

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910305677 Withdrawn EP0465072A3 (en) 1990-06-26 1991-06-24 Adjustable bent sub

Country Status (4)

Country Link
EP (1) EP0465072A3 (en)
AU (1) AU7932191A (en)
CA (1) CA2019898A1 (en)
NO (1) NO912480L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2063161A1 (en) * 1992-03-16 1993-09-17 Lennard Sihlis Adjustable bent housing ii
GB9210846D0 (en) * 1992-05-21 1992-07-08 Baroid Technology Inc Drill bit steering
GB9222298D0 (en) * 1992-10-23 1992-12-09 Stirling Design Int Directional drilling tool

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4303135A (en) * 1977-08-18 1981-12-01 Benoit Lloyd F Directional drilling sub
US4596294A (en) * 1982-04-16 1986-06-24 Russell Larry R Surface control bent sub for directional drilling of petroleum wells
US4745982A (en) * 1986-11-28 1988-05-24 Wenzel Kenneth H Adjustable bent sub
US4884643A (en) * 1989-01-17 1989-12-05 392534 Alberta Ltd. Downhole adjustable bent sub
US5052501A (en) * 1990-08-01 1991-10-01 Douglas Wenzel Adjustable bent housing
EP0497421A1 (en) * 1991-02-01 1992-08-05 Anadrill International SA Downhole adjustable bent assemblies

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4303135A (en) * 1977-08-18 1981-12-01 Benoit Lloyd F Directional drilling sub
US4596294A (en) * 1982-04-16 1986-06-24 Russell Larry R Surface control bent sub for directional drilling of petroleum wells
US4745982A (en) * 1986-11-28 1988-05-24 Wenzel Kenneth H Adjustable bent sub
US4884643A (en) * 1989-01-17 1989-12-05 392534 Alberta Ltd. Downhole adjustable bent sub
US5052501A (en) * 1990-08-01 1991-10-01 Douglas Wenzel Adjustable bent housing
EP0497421A1 (en) * 1991-02-01 1992-08-05 Anadrill International SA Downhole adjustable bent assemblies

Also Published As

Publication number Publication date
AU7932191A (en) 1992-01-02
EP0465072A2 (en) 1992-01-08
NO912480L (en) 1991-12-27
NO912480D0 (en) 1991-06-25
CA2019898A1 (en) 1991-12-26

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