Invention Grant
- Patent Title: Apparatus for, and method of, landing items at a well location
- Patent Title (中): 在井位上着陆物品的装置和方法
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Application No.: US11927847Application Date: 2007-10-30
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Publication No.: US07886827B2Publication Date: 2011-02-15
- Inventor: Burt A. Adams , Norman A. Henry
- Applicant: Burt A. Adams , Norman A. Henry
- Applicant Address: US TX Houston
- Assignee: Allis-Chalmers Rental Services, LLC
- Current Assignee: Allis-Chalmers Rental Services, LLC
- Current Assignee Address: US TX Houston
- Agency: Garvey, Smith, Nehrbass & North, L.L.C.
- Agent Brett A. North
- Main IPC: E21B19/18
- IPC: E21B19/18 ; E21B29/12

Abstract:
An apparatus for, and method of, lowering items from a drilling rig to a well located below it through the use of a landing string comprised of drill pipe having an enlarged diameter section with a shoulder, in combination with upper and lower holders having wedge members with shoulders that engage and support the drill pipe at the shoulder of the enlarged diameter section, the shoulder of the drill pipe and the shoulders of the wedge members being rotatable with respect to each other.
Public/Granted literature
- US20080105463A1 APPARATUS FOR, AND METHOD OF, LANDING ITEMS AT A WELL LOCATION Public/Granted day:2008-05-08
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