发明名称 |
Vertical drilling system for controlling deviation |
摘要 |
Systems and methods for controlling deviations during drilling operations include securing a plurality of stabilizers to a lower portion of a drill string. The stabilizers can have a substantially triangular cross-sectional area oriented perpendicular to the longitudinal axis of the drill string, and a plurality of blades secured to the stabilizer at points associated with corners of the triangular cross-sectional area. The resulting system can exhibit improved stability and stiffness, an improved flow area, a reduced annular velocity, an increased penetration rate, and a longer usable life.
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申请公布号 |
US8561726(B2) |
申请公布日期 |
2013.10.22 |
申请号 |
US201113373609 |
申请日期 |
2011.11.21 |
申请人 |
SALZER, III JOHN A.;EVANS DAVID LANE;COTY GLENN PATRICK;ECKMANN RONALD THORSTEN |
发明人 |
SALZER, III JOHN A.;EVANS DAVID LANE;COTY GLENN PATRICK;ECKMANN RONALD THORSTEN |
分类号 |
E21B17/10 |
主分类号 |
E21B17/10 |
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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