The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 27, 1990
Filed:
Dec. 28, 1989
Applicant:
Inventor:
Bobby E Cox, Kenner, LA (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E02B / ;
U.S. Cl.
CPC ...
405201 ; 405196 ; 405195 ;
Abstract
Method and apparatus for transferring a derrick from a jack-up rig to an offshore platform are disclosed which include positioning the rig and platform next to each other, providing an elevator pad on the platform that is set at the same level as the deck of the rig, installing skid beams between the deck of the rig and the top of the elevator pad, skidding the rig from the rig to the pad, and lowering the pad and derrick to the normal level of the platform for use in drilling operations.