发明名称 |
System for running tubular members |
摘要 |
The present invention relates to a wiper plug and internal drop ball mechanism that may be used in conjunction with a downhole surge reduction tool to run, hang, and cement casing liners in a wellbore. The apparatus of the present invention comprises a wiper plug assembly removably attached to the drill string within the casing liner, a drop ball sub attached below the wiper plug assembly which releases a float valve actuator ball having a diameter larger than the drill string, and float equipment having a plurality of flapper valves. The apparatus of the present invention may further comprise a diverter tool connected between the drill string and the casing liner.
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申请公布号 |
US6491103(B2) |
申请公布日期 |
2002.12.10 |
申请号 |
US20010829107 |
申请日期 |
2001.04.09 |
申请人 |
ALLAMON JERRY P.;ALLAMON SHIRLEY C. |
发明人 |
ALLAMON JERRY P.;WAGGENER KENNETH DAVID |
分类号 |
E21B33/16;E21B43/10;(IPC1-7):E21B34/06 |
主分类号 |
E21B33/16 |
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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