发明名称 |
BI-DIRECTIONAL ROTARY STEERABLE SYSTEM ACTUATOR ASSEMBLY AND METHOD |
摘要 |
Methods and apparatuses to direct a drill bit of a directional drilling assembly are disclosed. The methods and apparatuses employ the use of bi-directional actuators that are capable of displacing a hybrid steering sleeve in positive and negative directions. The bi-directional actuators are capable of greater control and precision in their actuations than traditional "engaged-disengaged" unidirectional actuators, thereby allowing for more precise directional drilling operations. The bi-directional actuators are preferably driven by drilling fluids and may optionally be shielded to lessen the erosive effects thereof.
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申请公布号 |
CA2532618(C) |
申请公布日期 |
2012.05.01 |
申请号 |
CA20062532618 |
申请日期 |
2006.01.12 |
申请人 |
SCHLUMBERGER CANADA LIMITED |
发明人 |
DOWNTON, GEOFF |
分类号 |
E21B7/04;E21B7/06;E21B21/10;E21B47/024 |
主分类号 |
E21B7/04 |
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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