发明名称 |
ACTUATING BALL |
摘要 |
<p>The present invention relates to tools for use in wellbores which are actuated by means of actuating balls. The invention provides a method of actuating a tool located in a wellbore, the method comprising the sequential steps of: (a) locating a frangible actuating ball (2) on a seat, the seat being provided in the tool for receiving the actuating ball (2); (b) pumping fluid down a tubing string attached to the tool so as to apply a force to the seat and thereby actuate the tool, the force being transmitted to the seat through the actuating ball (2); and (c) breaking the actuating ball (2) to permit fluid to flow through the seat. The invention has the advantage over the prior art of providing means for actuating a downhole tool with an actuating ball (2) so that the actuating ball (2) does not form an undesirable obstruction once the tool has been actuated.</p> |
申请公布号 |
WO9736088(A1) |
申请公布日期 |
1997.10.02 |
申请号 |
WO1997GB00819 |
申请日期 |
1997.03.24 |
申请人 |
SMITH INTERNATIONAL, INC.;APPLETON, ROBERT, PATRICK |
发明人 |
APPLETON, ROBERT, PATRICK |
分类号 |
E21B23/00;E21B23/04;E21B34/06;E21B34/14;(IPC1-7):E21B23/04;F16K31/00 |
主分类号 |
E21B23/00 |
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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