Invention Grant
- Patent Title: Casing feeder
- Patent Title (中): 套管给料机
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Application No.: US11185281Application Date: 2005-07-20
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Publication No.: US07669662B2Publication Date: 2010-03-02
- Inventor: Bernd-Georg Pietras
- Applicant: Bernd-Georg Pietras
- Applicant Address: US TX Houston
- Assignee: Weatherford/Lamb, Inc.
- Current Assignee: Weatherford/Lamb, Inc.
- Current Assignee Address: US TX Houston
- Agency: Patterson & Sheridan, LLP
- Priority: GB9818366 19980824
- Main IPC: E21B19/00
- IPC: E21B19/00

Abstract:
A top drive system for drilling with casing includes a casing feeder and a torque head. In one embodiment, the casing feeder is adapted to position a casing for engagement with the torque head. The casing feeder includes a pair of conveying arms for engagement with the casing. Each conveying arm may be raised or lowered by a cylinder. The conveying arms are equipped with a motor driven roller for engaging and lifting the casing. The casing feeder may also be equipped with a counting apparatus to determine the positioning of the casing in the torque head.
Public/Granted literature
- US20060000600A1 Casing feeder Public/Granted day:2006-01-05
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