发明名称 |
BALL ACTIVATED TOOL FOR USE IN DOWNHOLE DRILLING |
摘要 |
A ball activated tool (1) for use in dowhole drilling, said tool being adapted to be mounted in a casing portion of a drill string, in which the tool comprises: a hollow main body (1); outlet port means (5) in the wall of the main body (1) through which fluid can flow transversely of the drill string; a control sleeve (6) slidably mounted in the main body; and, a ball seat arranged at one end of the sleeve (6) to receive a deformable ball (20,104) when the latter is launched down the drill string to activate the tool, which ball seat (100) includes: a deformable annular member (101) , and an abutment (102) which is spaced axially from the annular member (101) by a sufficient distance to allow the abutment (102) and the annular member (101) to co-operate to latch the ball (104) against axial movement inwardly or outwardly of the ball seat (100).
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申请公布号 |
WO02068793(A1) |
申请公布日期 |
2002.09.06 |
申请号 |
WO2002GB00582 |
申请日期 |
2002.02.11 |
申请人 |
LEE, PAUL, BERNARD;ORR, WILLIAM, MCLEAN |
发明人 |
LEE, PAUL, BERNARD |
分类号 |
E21B21/00;E21B21/10;E21B34/14;(IPC1-7):E21B34/14 |
主分类号 |
E21B21/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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