发明名称 |
Apparatus and method for deploying cementing plugs |
摘要 |
An apparatus for installing cement plugs into a well, comprising a protective sleeve having one end adapted to be attached to the end of a drill pipe and arranged to carry a cementing plug around its outer surface such that a dart passing through the drill pipe can pass through the sleeve and engage only on formations on the plug to withdraw it from the end of the sleeve. |
申请公布号 |
GB2477068(A) |
申请公布日期 |
2011.07.20 |
申请号 |
GB20110008212 |
申请日期 |
2009.11.24 |
申请人 |
SCHLUMBERGER HOLDINGS LIMITED |
发明人 |
PHILIPPE GAMBIER;LAURENT COQUILLEAU;JAMES METSON |
分类号 |
E21B33/16 |
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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