The application discloses a safety valve including a flapper valve and a packer assembly to be installed in a bore to isolate a first zone from a second zone. Preferably, the safety valve includes a hydraulic conduit bypassing the flapper valve to allow communication therethrough when the valve is closed. Furthermore, the safety valve preferably allows unobstructed passage of tools and fluids therethrough when the flapper valve is open. The application discloses a method to install a safety valve in an existing string of tubing by deploying a packer assembly having an integral safety valve.
申请公布号
WO2006034214(A2)
申请公布日期
2006.03.30
申请号
WO2005US33515
申请日期
2005.09.20
申请人
GENERAL OIL TOOLS, L.P.;BOLDING, JEFFREY, L.;SMITH, DAVID, R.