发明名称 |
Adjustable gauge downhole drilling assembly |
摘要 |
A downhole drilling assembly including a housing having an upper end for connection to a drill string and a lower end, a fluid passage extending through the housing from the upper end to the lower end, a power unit contained within the housing, a drive assembly extending within the housing between the power unit and the lower end of the housing such that a mandrel chamber is defined between the drive assembly and the housing, a radially movable stabilizer associated with the housing, and an axially movable mandrel contained within the mandrel chamber, the mandrel being associated with a stabilizer actuator for causing radial movement of the stabilizer in response to axial movement of the mandrel.
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申请公布号 |
US6158533(A) |
申请公布日期 |
2000.12.12 |
申请号 |
US19980059020 |
申请日期 |
1998.04.13 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
GILLIS, IAN;CRASE, GARY M.;COMEAU, LAURIER E.;REID, CHARLES M.;ROBERTS, PAUL |
分类号 |
E21B7/06;E21B7/08;E21B23/00;E21B47/09;(IPC1-7):E21B7/08 |
主分类号 |
E21B7/06 |
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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