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1. 发明专利

DE69719811T2 未知
公开(公告)号：DE69719811T2
公开(公告)日：2004-01-22
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.

2. 发明专利

CA2274256C APPARATUS FOR LAUNCHING AT LEAST ONE PLUG INTO A TUBULAR IN A WELLBORE 未知
公开(公告)号：CA2274256C
公开(公告)日：2005-02-15
申请号：CA2274256
申请日：1997-12-08
申请人： WEATHERFORD LAMB , LUCAS BRIAN RONALD
发明人： SALTE JONE , GUDMESTAD TARALD
IPC分类号： E21B33/05
摘要： An apparatus for launching at least one plug into a tubular in a wellbore, said apparatus comprising a hollow upper section and a hollow lower section, said hollow upper section comprising at least first and secon d upper ports (12, 13) longitudinally spaced therein, said second upper port (13) being disposed above said first upper port (12), a landing seat (7) between said hollow upper section and said hollow lower section, and a fluid displaceable member (4) retained below said second upper port (13), said hollow lower section adapted to retain at least one plug (8) and comprising at least a first lower port (10) thereabove and a landing collar (6) for said fluid displaceable member (4), the arrangement being such that in use, when the apparatus is installed at the top of a liner and lowered into a wellbore, and a dart land s on said landing seat (7) blocking said first upper port (12) a fluid pressur e differential can be created about said fluid displaceable member (4) through said second upper port (13) which displaces said fluid displaceable member (4) to said landing collar (6), allowing a fluid pressure differential about said plug through said first lower port (10) to launch said plug.

3. 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.

4. 发明专利

CA2274256A1 APPARATUS FOR LAUNCHING AT LEAST ONE PLUG INTO A TUBULAR IN A WELLBORE 未知
公开(公告)号：CA2274256A1
公开(公告)日：1998-06-11
申请号：CA2274256
申请日：1997-12-08
申请人： WEATHERFORD LAMB , LUCAS BRIAN RONALD
发明人： SALTE JONE , GUDMESTAD TARALD
IPC分类号： E21B33/05
摘要： An apparatus for launching at least one plug into a tubular in a wellbore, said apparatus comprising a hollow upper section and a hollow lower section, said hollow upper section comprising at least first and second upper ports (12, 13) longitudinally spaced therein, said second upper port (13) being disposed above said first upper port (12), a landing seat (7) between said hollow upper section and said hollow lower section, and a fluid displaceable member (4) retained below said second upper port (13), said hollow lower section adapted to retain at least one plug (8) and comprising at least a first lower port (10) thereabove and a landing collar (6) for said fluid displaceable member (4), the arrangement being such that in use, when the apparatus is installed at the top of a liner and lowered into a wellbore, and a dart lands on said landing seat (7) blocking said first upper port (12) a fluid pressure differential can be created about said fluid displaceable member (4) through said second upper port (13) which displaces said fluid displaceable member (4) to said landing collar (6), allowing a fluid pressure differential about said plug through said first lower port (10) to launch said plug.

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