发明名称 |
UNDERREAMER FOR INCREASING A WELLBORE DIAMETER |
摘要 |
An underreamer for increasing a diameter of a wellbore. The underreamer may include a body having an axial bore extending at least partially therethrough. An electromagnetic activation system may be disposed at least partially within the bore of the body. A valve may be disposed within the bore of the body and coupled to the electromagnetic activation system. The valve may include a mobile element and a static element. The mobile element may be coupled to the electromagnetic activation system and move from a first position where the mobile element obstructs fluid flow through the valve to a second position where the mobile element permits fluid flow through the valve. A cutter block may be movably coupled to the body and move radially-outward as the mobile element moves from the first position to the second position. |
申请公布号 |
EP2971435(A1) |
申请公布日期 |
2016.01.20 |
申请号 |
EP20140768849 |
申请日期 |
2014.03.14 |
申请人 |
SERVICES PÉTROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;SCHLUMBERGER TECHNOLOGY B.V. |
发明人 |
FULLER, NATHAN;BOSWELL, CRAIG |
分类号 |
E21B10/26;E21B10/02 |
主分类号 |
E21B10/26 |
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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