发明名称 |
Method and Apparatus for Controlling Bottomhole Temperature in Deviated Wells |
摘要 |
An apparatus and method for reducing temperature along a bottomhole assembly during a drilling operation is provided. In one aspect the bottomhole temperature may be reduced by drilling a borehole using a drill string having a bottomhole assembly at an end thereof, circulating a fluid through the drill string and an annulus between the drill string and the borehole, diverting a selected portion of the fluid from the drill string into the annulus at a selected location above the drill bit to reduce pressure drop across at least a portion of the bottomhole assembly to reduce temperature of the bottomhole assembly during the drilling operation.
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申请公布号 |
US2011048802(A1) |
申请公布日期 |
2011.03.03 |
申请号 |
US20100862656 |
申请日期 |
2010.08.24 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
FINCHER ROGER W.;WATKINS LARRY A.;TRICHEL DONALD K.;OESTERBERG MARCUS |
分类号 |
E21B21/08;E21B7/00 |
主分类号 |
E21B21/08 |
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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