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Publication numberUS3830295 A
Publication typeGrant
Publication dateAug 20, 1974
Filing dateJul 28, 1972
Priority dateApr 13, 1972
Publication numberUS 3830295 A, US 3830295A, US-A-3830295, US3830295 A, US3830295A
InventorsCrowe T
Original AssigneeBaker Oil Tools Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Tubing hanger apparatus
US 3830295 A
Abstract
A tubing hanger is run into the well on a setting tool and supports a dual tubing string when the hanger is set in the well casing. The setting tool is removed and a dual, full opening shutoff valve assembly is run into the well and seats in the tubing hanger. Control fluid pressure supplied from the top of the well holds the shutoff valves open. The dual shutoff valve is retrievable, and the tubing hanger is then retrievable by a retrieving tool.
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Description  (OCR text may contain errors)

United States Patent [1 1 Crowe 1 1 TUBING HANGER APPARATUS [75] Inventor: Talmadge L. Crowe, Houston, Tex.

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

Calif.

[22] Filed: July 28, 1972 [2]] Appl. No.: 275,911

Related US. Application Data [62] Division of Ser. No. 243,806, April 13, 1972 Pat.

[52] US. Cl. 166/125, 166/212 [51] Int. Cl E2lb 23/00 [58] Field of Search 166/120, 125, 126, 130, 166/133, 134,138, 206, 208, 212, 216, 217; 294/8615 [56] References Cited UNITED STATES PATENTS 5/1955 Baker et a1. 166/125 X 3/1959 Baker 166/212 [451 Aug. 20, 1974 3,631,927 l/l972 Young 166/134 Primary ExaminerWerner H. Schroeder Attorney, Agent, or Firm-Bernard Kriegcl 5 7 ABSTRACT A tubing hanger is run into the well on a setting tool and supports a dual tubing string when the hanger is set in the well casing. The setting tool is removed and a dual, full opening shutoff valve assembly is run into the well and seats in the tubing hanger. Control fluid pressure supplied from the top of the well holds the shutoff valves open. The dual shutoff valve is retrievable, and the tubing hanger is then retrievable by a retrieving tool.

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Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2707998 *Sep 26, 1950May 10, 1955Baker Oil Tools IncSetting tool, dump bailer, and well packer apparatus
US2878877 *Oct 25, 1954Mar 24, 1959Baker Oil Tools IncTubing anchor and valve apparatus
US3002564 *Jul 18, 1957Oct 3, 1961Baker Oil Tools IncTubing anchor and catcher
US3011555 *Apr 14, 1958Dec 5, 1961Baker Oil Tools IncWell packers
US3122205 *Nov 14, 1960Feb 25, 1964Brown Oil ToolsWell packer assemblies
US3236309 *Jul 9, 1962Feb 22, 1966Martin B ConradRetrievable packer holddown device
US3422898 *Aug 17, 1967Jan 21, 1969Schlumberger Technology CorpSetting apparatus for well tools
US3608634 *Mar 19, 1970Sep 28, 1971Brown Oil ToolsHydraulic set liner hanger
US3631927 *Dec 31, 1969Jan 4, 1972Schlumberger Technology CorpWell packer
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4248307 *May 7, 1979Feb 3, 1981Baker International CorporationLatch assembly and method
US6481496Jun 14, 2000Nov 19, 2002Schlumberger Technology CorporationWell packer and method
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
Classifications
U.S. Classification166/125, 166/212
International ClassificationE21B43/10, E21B43/00, E21B34/14, E21B23/00, E21B33/122, E21B43/02, E21B33/12, E21B23/06, E21B43/14, E21B34/00, E21B33/1295
Cooperative ClassificationE21B43/10, E21B33/1295, E21B43/14, E21B34/14, E21B2034/002, E21B23/06, E21B33/122
European ClassificationE21B33/122, E21B43/10, E21B23/06, E21B34/14, E21B33/1295, E21B43/14