发明名称 |
SYSTEM AND METHOD TO CONTROL STEERING AND ADDITIONAL FUNCTIONALITY IN A ROTARY STEERABLE SYSTEM |
摘要 |
A system and methodology provide improved control over the directional drilling of a wellbore while enabling additional functionality. A rotational valve is mounted within a drill collar of a rotary steerable system to control flow of actuating fluid to one or more steering pads which are selectively moved in a lateral direction with respect to the rotary steerable system. The rotational valve also is controlled to carry out at least one additional function while controlling the direction of drilling.
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申请公布号 |
CA2762538(A1) |
申请公布日期 |
2012.06.23 |
申请号 |
CA20112762538 |
申请日期 |
2011.12.21 |
申请人 |
SCHLUMBERGER CANADA LIMITED |
发明人 |
DOWNTON, GEOFFREY;CLARK, BRIAN |
分类号 |
E21B7/08;E21B7/04 |
主分类号 |
E21B7/08 |
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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