发明名称 |
Drill bits and methods of drilling curved boreholes |
摘要 |
The invention provides drill bits and methods of drilling curved boreholes. One aspect of the invention provides a drill bit including a bit body and one or more blades positioned within the bit body, the one or more blades individually actuatable to a plurality of cut depths. Another aspect of the invention provides a method for drilling a curved borehole. The method includes: providing a drill string including a drill bit including a bit body and one or more blades positioned within the bit body, the one or more blades individually actuatable to a plurality of cut depths; rotating the drill string; and selectively actuating the one or more blades to a plurality of cut depths; thereby drilling a curved borehole.
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申请公布号 |
US8469117(B2) |
申请公布日期 |
2013.06.25 |
申请号 |
US201213564705 |
申请日期 |
2012.08.01 |
申请人 |
PAFITIS DEMOSTHENIS GEORGIOU;PABON JAHIR;SIHLER JOACHIM;SCHLUMBERGER TECHNOLOGY CORPORATION |
发明人 |
PAFITIS DEMOSTHENIS GEORGIOU;PABON JAHIR;SIHLER JOACHIM |
分类号 |
E21B7/08;E21B10/62 |
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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