Title:
【発明の名称】油井の中心から外れた位置に直接駆動掘削装置を支持する装置
Document Type and Number:
Japanese Patent JP2993763
Kind Code:
B2
Abstract:
Drilling equipment including apparatus for laterally moving a direct drive drilling (12) unit to a position offset from the centerline (34) of a well. The drilling equipment includes a traveling block (24) suspended for generally vertical travel within a derrick (16) during drilling of a well, a direct drive drilling unit (12) suspendable from the traveling block, (24) means for guiding the drilling unit during drilling and apparatus connected to the derrick (16) for moving the drilling unit (12) laterally relative to the axis (34) of the well to an offset position. The drilling unit (12) includes a drill motor (48) and a drive sleeve (52) for threadably connecting the drill motor to a drill string in the well. The guide means includes a first pair of rails (42) connected to the derrick (16) and extending parallel to the axis (34) of the well. The apparatus includes a second pair of rails (72) and means (74) for supporting the drilling unit (12). The second pair of rails (72) is positionable below and in alignment with the first pair of rails when the support means (74) is in the offset position.
Inventors:
Michael Sea Dinsdale
Application Number:
JP14169891A
Publication Date:
December 27, 1999
Filing Date:
June 13, 1991
Export Citation:
Assignee:
William Jay Baker
International Classes:
E21B3/02; E21B15/00; E21B19/00; E21B19/02; (IPC1-7): E21B19/00
Domestic Patent References:
| JP612152B2 |
Attorney, Agent or Firm:
Soga Doteru (6 people outside)