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Publication numberUS3874446 A
Publication typeGrant
Publication dateApr 1, 1975
Filing dateJun 3, 1974
Priority dateJul 28, 1972
Publication numberUS 3874446 A, US 3874446A, US-A-3874446, US3874446 A, US3874446A
InventorsCrowe Talmadge L
Original AssigneeBaker Oil Tools Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Tubing hanger releasing and retrieving tool
US 3874446 A
Abstract
A tool for releasing and retrieving a tubing hanger, and the like, anchored in a well casing disposed in a well bore, the tool being connectible to a running string for lowering into the well casing toward the tubing hanger and being oriented upon engaging the tubing hanger to a predetermined rotational position, latch means of the tool being coupled to the tubing hanger, enabling an upward pull to be taken on the running string and tool for application to the tubing hanger to effect its release from the well casing and its retrieval from the well casing.
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Description  (OCR text may contain errors)

United States Patent 1191 Crowe TUBING HANGER RELEASING AND RETRIEVING TOOL [75] Inventor:

[73] Assignee: Baker Oil Tools, Inc., Los Angeles,

Calif.

[22] Filed: June 3, 1974 [2]] Appl. No.: 475,427

Related US. Application Data [62] Division of Ser. No. 275,91 l, July 28, I972, Pat. No. 3,830,295, which is a division of Ser. No. 243,806, April 13, I972, Pat. No. 3,771,603.

Talmadge L. Crowe, Houston, Tex.

[52] US. Cl 166/129, 166/182, 166/189, [66/237 [511 Int. Cl ..E2lb 23/00 [58] Field of Search 166/123, 124, 125, 181, 166/182, 212, 237, I89

[56] References Cited UNITED STATES PATENTS 3,!99906 8/1965 Chenoweth 166/125 E :l01 44a 41/ i i m z 445- 3 N t Z 2 2 t 4 \r} j -446 W427 452 1330 L 2s 2 ,3

ie x C?! 1111 3,874,446 Apr. 1, 1975 7/l97l Brown et al. [66/125 7/1972 Crockwell et al "16/123 [57] ABSTRACT A tool for releasing and retrieving a tubing hanger, and the like, anchored in a well casing disposed in a well bore, the tool being connectible to a running string for lowering into the well casing toward the tubing hanger and being oriented upon engaging the tubing hanger to a predetermined rotational position, latch means of the tool being coupled to the tubing hanger, enabling an upward pull to be taken on the running string and tool for application to the tubing hanger to effect its release from the well casing and its retrieval from the well casing.

11 Claims, 47 Drawing Figures APR' 1 ms 3.874.446

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Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3199906 *Jul 5, 1963Aug 10, 1965Baker Oil Tools IncReleasable fluid control apparatus for retrieving subsurface well devices
US3593784 *Sep 11, 1969Jul 20, 1971Brown Oil ToolsAnchor assembly for well tools such as packers and the like
US3678998 *Jul 20, 1970Jul 25, 1972Baker Oil Tools IncRetrievable well packer
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4305465 *Feb 1, 1980Dec 15, 1981Dresser Industries, Inc.Subsurface tubing hanger and stinger assembly
US4997225 *Dec 15, 1989Mar 5, 1991Denis Greg StFrom a well
US6267180 *Aug 25, 1998Jul 31, 2001Halliburton Energy Services, Inc.Packer releasing tool and method for releasing a packer assembly from a wellbore
US6817633Dec 20, 2002Nov 16, 2004Lone Star Steel CompanyTubular members and threaded connections for casing drilling and method
US7169239May 16, 2003Jan 30, 2007Lone Star Steel Company, L.P.Solid expandable tubular members formed from very low carbon steel and method
US7404438Dec 6, 2006Jul 29, 2008United States Steel CorporationSolid expandable tubular members formed from very low carbon steel and method
US7621323Jul 23, 2008Nov 24, 2009United States Steel CorporationSolid expandable tubular members formed from very low carbon steel and method
CN100567735COct 19, 2007Dec 9, 2009陈 宁Oil-well pumping connection separator
Classifications
U.S. Classification166/129, 166/189, 166/237, 166/182
International ClassificationE21B33/122, E21B43/10, E21B34/00, E21B23/00, E21B43/02, E21B33/12, E21B33/1295, E21B23/06
Cooperative ClassificationE21B2034/002, E21B33/1295, E21B23/06, E21B33/122, E21B43/10
European ClassificationE21B33/122, E21B23/06, E21B33/1295, E21B43/10