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101. 发明专利

DE69719811D1 未知
公开(公告)号：DE69719811D1
公开(公告)日：2003-04-17
申请号：DE69719811
申请日：1997-12-08
申请人： WEATHERFORD LAMB
发明人： GUDMESTAD TARALD , SALTE JONE
IPC分类号： E21B33/05
摘要： An apparatus for launching at least one plug into a tubular in a wellbore, in certain aspects, the apparatus having a hollow upper section with at least first and second upper ports one above the other, a landing seat, and a first fluid displaceable member below the second upper port, the hollow lower section adapted to retain a plug and having a first lower port and a landing collar for the fluid displaceable member.

102. 发明专利

DE69808121D1 未知
公开(公告)号：DE69808121D1
公开(公告)日：2002-10-24
申请号：DE69808121
申请日：1998-11-04
申请人： WEATHERFORD LAMB
发明人： GUDMESTAD TARALD , TILTON THOMAS
IPC分类号： E21B33/05 , E21B33/16
摘要： An apparatus for launching at least two plugs, said apparatus comprising a mandrel (2), a lower plug (22) and an upper plug (21) releasably disposed with respect to said mandrel (2), wherein said upper plug (21) comprises a body (23) having a flow path (24) therethrough and a cap (25) for blocking fluid flow through said flow path (24) characterized in that said cap (25) is detachable from said body (23) in use if the upper plug (21) is prematurely ejected.

103. 发明专利

AU1841502A Hydraulic running tool 未知
公开(公告)号：AU1841502A
公开(公告)日：2002-06-24
申请号：AU1841502
申请日：2001-12-04
申请人： WEATHERFORD LAMB
发明人： DUFF RICHARD , GUDMESTAD TARALD , MURRAY MARK
IPC分类号： E21B17/06 , E21B23/00 , E21B43/10

104. 发明专利

AU1039999A Plug for use in wellbore operations and apparatus for launching said plug 未知
公开(公告)号：AU1039999A
公开(公告)日：1999-05-31
申请号：AU1039999
申请日：1998-11-04
申请人： WEATHERFORD LAMB , LUCAS BRIAN RONALD
发明人： GUDMESTAD TARALD , TILTON FREDERICK THOMAS
IPC分类号： E21B33/05 , E21B33/16
摘要： An apparatus for launching at least two plugs, said apparatus comprising a mandrel (2), a lower plug (22) and an upper plug (21) releasably disposed with respect to said mandrel (2), wherein said upper plug (21) comprises a body (23) having a flow path (24) therethrough and a cap (25) for blocking fluid flow through said flow path (24) characterized in that said cap (25) is detachable from said body (23) in use if the upper plug (21) is prematurely ejected.

105. 发明专利

NO983111L 未知
公开(公告)号：NO983111L
公开(公告)日：1998-08-31
申请号：NO983111
申请日：1998-07-06
申请人： WEATHERFORD LAMB
发明人： DYBEVIK ARTHUR HERMAN , GUDMESTAD TARALD
IPC分类号： E21B17/06 , E21B23/00 , E21B23/04 , E21B23/06 , E21B41/00 , E21B43/10

106. 发明专利

NO982641D0 未知
公开(公告)号：NO982641D0
公开(公告)日：1998-06-09
申请号：NO982641
申请日：1998-06-09
申请人： WEATHERFORD LAMB
发明人： GUDMESTAD TARALD , DYBEVIK ARTHUR HERRMAN , KVERNSTUEN OLE SVEINUNG
IPC分类号： E21B17/06 , E21B23/00 , E21B23/04 , E21B23/06 , E21B41/00 , E21B43/10 , E21B

107. 发明专利

NO981994D0 未知
公开(公告)号：NO981994D0
公开(公告)日：1998-05-04
申请号：NO981994
申请日：1998-05-04
申请人： WEATHERFORD LAMB
发明人： GUDMESTAD TARALD
IPC分类号： E21B33/16
摘要： PCT No. PCT/GB96/03006 Sec. 371 Date May 21, 1998 Sec. 102(e) Date May 21, 1998 PCT Filed Dec. 6, 1996 PCT Pub. No. WO97/21019 PCT Pub. Date Jun. 12, 1997A plug launching device for use in cementing operations in the construction of oil and gas wells, the device having, in certain embodiments, a tubular member with an upper section and a lower section which can accommodate at least a bottom plug and a top plug, the upper section having a floor and the lower section movable relative to the upper section so that when a first dart is pumped into the upper section by cement, the cement is diverted to raise the lower section to release the bottom plug, and when a second dart is pumped into the upper section by hydraulic fluid, it lands on the first dart and the hydraulic fluid is diverted to raise the lower section to further release the top plug.

108. 发明专利

AU1386097A Release mechanism 未知
公开(公告)号：AU1386097A
公开(公告)日：1997-08-01
申请号：AU1386097
申请日：1997-01-03
申请人： WEATHERFORD LAMB , BRIAN RONALD LUCAS
发明人： DYBEVIK ARTHUR HRRMAN , GUDMESTAD TARALD
IPC分类号： E21B17/06 , E21B23/00 , E21B23/04 , E21B23/06 , E21B41/00 , E21B43/10
摘要： PCT No. PCT/GB97/00015 Sec. 371 Date Oct. 28, 1998 Sec. 102(e) Date Oct. 28, 1998 PCT Filed Jan. 3, 1997 PCT Pub. No. WO97/25515 PCT Pub. Date Jul. 17, 1997A tool can be released from a tool string in a wellbore by setting the tool and applying reverse torque to the tool string for an extended period. The release mechanism (200) comprises a latch (250) including a plurality of collects (253) which are held in a radially extended position to secure a tool "T" to the tool string. A first member (201) is connected to the tool string and to the latch (250). A second member (202) is connected to the latch. In use, after the tool is set reverse torque is applied to the first member (201) to rotate it relative to the second member (202) which is constrained against rotation by the action of the tool on the latch. When the first member (201) has rotated sufficiently the first and second members occupy a release position in which downward movement of the first member (201) relative to the second member (202) (which was previously blocked) is permitted. This movement releases the latch (250) and hence allows separation of the tool and the tool string. In order to prevent accidental release relative movement between the first member (201) and second member (202) is inhibited by providing both members with vanes (204, 208) and filling the chamber therebetween with hydraulic fluid. The damping is preferably arranged so that a significant reverse torque, for example 3500 ft/lbs must be applied for a prolonged period, for example 30 seconds, before the latch can be released.

109. 发明专利

CA2242307A1 RELEASE MECHANISM 未知
公开(公告)号：CA2242307A1
公开(公告)日：1997-07-17
申请号：CA2242307
申请日：1997-01-03
申请人： WEATHERFORD LAMB
发明人： DYBEVIK ARTHUR H , GUDMESTAD TARALD
IPC分类号： E21B17/06 , E21B23/00 , E21B23/04 , E21B23/06 , E21B41/00 , E21B43/10
摘要： A tool can be released from a tool string in a wellbore by setting the tool and applying reverse torque to the tool string for an extended period. The release mechanism (200) comprises a latch (250) including a plurality of collets (253) which are held in a radially extended position to secure a tool "T" to the tool string. A first member (201) is connected to the tool string and to the latch (250). A second member (202) is connected to the latch. In use, after the tool is set reverse torque is applied to the first member (201) to rotate it relative to the second member (202) which is constrained against rotation by the action of the tool on the latch. When the first member (201) has rotated sufficiently the first and second members occupy a release position in which downward movement of the first member (201) relative to the second member (202) (which was previously blocked) is permitted. This movement releases the latch (250) and hence allows separation of the tool and the tool string. In order to prevent accidental release relative movement between the first member (201) and second member (202) is inhibited by providing both members with vanes (204, 208) and filling the chamber therebetween with hydraulic fluid. The damping is preferably arranged so that a significant reverse torque, for example 3500 ft/1bs must be applied for a prolonged period, for example 30 seconds, before the latch can be released.

110. 发明专利

CA2240520A1 APPARATUS FOR SETTING A LINER IN A WELL CASING 未知
公开(公告)号：CA2240520A1
公开(公告)日：1997-07-17
申请号：CA2240520
申请日：1997-01-03
申请人： WEATHERFORD LAMB
发明人： GUDMESTAD TARALD , DYBEVIK ARTHUR HRRMAN , KVERNSTEUN OLE SVEINUNG
IPC分类号： E21B17/06 , E21B23/00 , E21B23/04 , E21B23/06 , E21B41/00 , E21B43/10
摘要： An apparatus for setting a liner (1) in a casing (2) comprises a liner hanger (LH) and a running tool (100). The running tool (100) is provided with a valve seat (5) obstruction of which, in use, allows fluid pressure to be developed to set the liner hanger (LH) in the well casing (2). After the liner hanger (LH) has been set, the application of further pressure will displace the valve seat (5) to release (or at least enable) the running tool (100) to be released and to allow fluid flow through the running tool (100).

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