COMPENSATING PRESSURE CHAMBER FOR SETTING IN LOW AND HIGH HYDROSTATIC PRESSURE APPLICATIONS

摘要

A setting tool for actuating a well tool within a wellbore includes a mandrel, a sleeve telescopically engaging the mandrel, a floating piston disposed between the sleeve and the mandrel. The floating piston has a first face subjected to a downhole hydrostatic pressure. The setting tool also includes a pressure chamber formed between the floating piston and the valve, a working fluid in the pressure chamber, and a fluid-tight collapse chamber formed between the valve and a sealed end of the sleeve. The valve is configured to flow the working fluid from the pressure chamber into the collapse chamber if the working fluid reaches a predetermined primary pressure setting of the valve. The setting tool is connected to a consumer and is actuated to set the consumer. It is emphasized that this abstract is provided to comply with the rules requiring an abstract, which will allow a searcher or other reader to quickly ascertain the general subject matter of the technical disclosure.

主权项

1. An apparatus for performing a downhole operation, comprising:
a mandrel; a sleeve telescopically engaging the mandrel; a floating piston disposed between the sleeve and the mandrel, the floating piston having a first face subjected to a downhole hydrostatic pressure; a valve positioned between the sleeve and the mandrel; a pressure chamber formed between the floating piston and the valve; a working fluid in the pressure chamber; and a fluid-tight collapse chamber formed between the valve and a sealed end of the sleeve, wherein the valve is configured to flow the working fluid from the pressure chamber into the collapse chamber if the working fluid reaches a predetermined primary pressure setting of the valve.