Importance

Loading Importance Indicators...

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.

Loading the Abstract Image...

First Claim