发明名称 |
CONTROL METHOD AND APPARATUS FOR WELL OPERATIONS |
摘要 |
A method of controlling the annular pressure in a well during a well construction operation. The operation comprises pumping a fluid down a tubing located within the well and extracting the fluid that flows back through an annulus within said well and surrounding the tubing. The method comprises defining a set pressure pref, determining a desired extraction flow rate qc of fluid from said annulus in dependence upon the set pressure pref and a pumped flow rate into the annulus, and configuring an extraction path to achieve said desired extraction flow rate. |
申请公布号 |
US2012247831(A1) |
申请公布日期 |
2012.10.04 |
申请号 |
US201013497471 |
申请日期 |
2010.09.21 |
申请人 |
KAASA GLENN-OLE;FJALESTAD KJETIL;STATOIL ASA |
发明人 |
KAASA GLENN-OLE;FJALESTAD KJETIL |
分类号 |
E21B21/08 |
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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