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:
Jul. 14, 1987
Filed:
Sep. 09, 1985
Monty E Harris, Azle, TX (US);
Richard A Sukup, Burleson, TX (US);
The Western Company of North America, Fort Worth, TX (US);
Abstract
In an oil or gas well, a cement retainer setting tool for setting and pumping cement therethrough includes an inner piston defining a bore and an activation sleeve carried on the piston and defining an annular space between the piston and sleeve. A sleeve ring is formed inwardly from the activation sleeve and is positioned within the annular space beween the piston and the sleeve. Ports are provided to the piston above the sleeve ring for communicating a retainer setting pressure to the sleeve ring to move the sleeve downwardly relative to the piston upon application of such pressure. A plug means for plugging the lower end of the piston is provided therein. The plug means is disengagable upon application of a predetermined pressure greater than the retainer setting pressure. A second port structure is provided for connecting the lower end of the piston to a cement retainer, or other tool.