发明名称 |
Multiple lateral hydrocarbon recovery system and method |
摘要 |
An assembly for drilling multiple laterals (26) from a borehole and into a formation includes a whipstock assembly having a radially movable lug (82). An elongate tubular secured within the borehole has one or more non-ferrous portions (30) and a ferrous portion (52) adjacent and below a respective non-ferrous portion. A locator (54) is fixed within each ferrous portion at a desired axial spacing relative to the non-ferrous portion. According to the method of the invention, the whipstock assembly is lowered below the locator (54) and pulled upwardly to rotate the whipstock assembly to a selected azimuth within the tubular. The lug (82) on the whipstock assembly fits within the locator to axially position the whipstock face (97) within the non-ferrous portion of the tubular. A drill bit (96) engages the whipstock face and drills a window through the non-ferrous portion of the tubular and then into the formation.
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申请公布号 |
US5785133(A) |
申请公布日期 |
1998.07.28 |
申请号 |
US19950520579 |
申请日期 |
1995.08.29 |
申请人 |
TIW CORPORATION |
发明人 |
MURRAY, MARK J.;BRADDICK, BRITT O. |
分类号 |
E21B7/06;E21B7/08;E21B17/00;E21B23/00;E21B29/06;E21B41/00;(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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