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公开(公告)号：WO1981000017A1
公开(公告)日：1981-01-08
申请号：PCT/US1980000787
申请日：1980-06-23
Applicant: STANDARD OIL CO
Inventor： STANDARD OIL CO , JAGELER A , KILMER L , BRODING R
IPC: E21B04/02
Abstract: An apparatus operable on a seven conductor wireline logging cable for drilling a hole in the sidewall of a drill hole which comprises an elongated housing (11) with a hydraulically operated backup shoe (20) mounted within the housing for wedging the housing at a selected location in the drill hole and a hydraulic motor (32) with a drilling bit (31) connected thereto for rotation by the hydraulic motor. Hydraulic means (34, 35) are mounted within the housing and are connected to the hydraulic motor for moving the bit into drilling engagement with the sidewall of the drill hole. In one embodiment, a core cutting bit is connected to the motor for obtaining a sample of a subterranean formation at the selected location. A control and hydraulic supply system is provided at the surface for operating the apparatus. A method of sidewall coring is also disclosed.
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公开(公告)号：BR8008719A
公开(公告)日：1981-04-28
申请号：BR8008719
申请日：1980-06-23
Applicant: STANDARD OIL CO
Abstract: A method of core cutting and apparatus operable on a seven conductor wireline logging cable for drilling a hole in the sidewall of a drill hole which comprises an elongted housing with a hydraulically operated backup shoe mounted within the housing for wedging the housing at a selected location in the drill hole and a hydraulic motor with a drilling bit connected thereto for rotation by the hydraulic motor. Hydraulic means are mounted within the housing and are connected to the hydraulic motor for moving the bit into drilling engagement with the sidewall of the drill hole. In one embodiment, a core cutting bit is connected to the motor for obtaining a sample of a subterranean formation at the selected location.
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