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:
Aug. 19, 1986
Filed:
Dec. 03, 1984
Billy G Becker, Ventura, CA (US);
Charles V Swafford, Ventura, CA (US);
BST Lift Systems, Inc., Ventura, CA (US);
Abstract
Disclosed is a method of inserting and removing tubular valves into and from the secondary bore of a mandral having a main bore and a laterally offset secondary bore. The method includes the steps of positioning a whipstock plug having a sloping upper surface in the main bore and orienting the whipstock plug such that the upper surface slopes toward the secondary bore. The valves are removed by deflecting a retrieving tool off the upper surface of the whipstock plug to engage and remove the tubular valve from the secondary bore. The valves are inserted by deflecting the valve off the upper surface and into the secondary bore. After removal or insertion of a valve, the whipstock plug is removed from the main bore.