초록 ▼

There is described herein an apparatus for charging a fluid line through a coupler such as a penetrator. The apparatus comprises a body formed from a sidewall defining a bore positioned along the longitudinal axis and extending therethrough. The first end of the body forms a substantially flat face.

There is described herein an apparatus for charging a fluid line through a coupler such as a penetrator. The apparatus comprises a body formed from a sidewall defining a bore positioned along the longitudinal axis and extending therethrough. The first end of the body forms a substantially flat face. There is a stem positioned within the bore of the body and being movably mounted in the body for movement from a first position to a second position with respect to the body. There is a valve means attached to the apparatus for filling the body with hydraulic fluid. The substantially flat face of the body is fastened to a coupler. There is also an adjustment means attached to the stem for adjusting the position of the stem within the body. A method for charging a downhole hydraulic system is also described. There is also a method for installing a tubing hanger having a production string depending therefrom in a subsea wellhead while maintaining a hydraulically actuated downhole valve in an open position.

대표청구항 ▼

[ What is claimed is:] [22.]22. A method for charging a downhole hydraulic system, said method comprising:providing a valve coupler having a first end and a second end and a longitudinal axis extending between said first end and said second end, said valve coupler defining a passage having a first e

[ What is claimed is:] [22.]22. A method for charging a downhole hydraulic system, said method comprising:providing a valve coupler having a first end and a second end and a longitudinal axis extending between said first end and said second end, said valve coupler defining a passage having a first end and a second end attached to tubing that actuates a hydraulic system, said valve coupler further having a valve means positioned within said passage adjacent to said first end of said passage, wherein said valve coupler is connected to a downhole valve of a tubing hanger in a subsea environment and said valve means is adapted to charge a downhole hydraulic system with fluid;sealably attaching a charging device to said first end of said valve coupler, said charging device comprising:a body having a longitudinal axis, a first end and a second end, said body being formed from a sidewall defining a bore positioned along said longitudinal axis and extending therethrough, wherein said first end of said body forms a substantially flat face which is configured to complement said first end of said valve coupler;a stem having a portion positioned within the bore of the body and being movably mounted in the body for movement from a first position to a second position with respect to said body;adjustment means attached to said stem for adjusting the position of said stem within said body in such a manner that activation of said stem actuates said valve means between an open and closed position in order to communicate fluid flow through said valve means and to a downhole valve;fastening means adjacent to said first end of said body for matingly attaching said substantially flat face of said first end of said body to said first end of said valve coupler, andcharging means for charging a hydraulic system;charging said charging device with hydraulic fluid from said charging means;moving said stem in such a manner that said stem contacts said valve means in said valve coupler and moves said valve means to an open position;selectively charging the hydraulic system with hydraulic fluid to a desired pressure;opening a downhole valve with the desired pressure;closing said valve means in said valve coupler to maintain the desired pressure within the downhole hydraulic system so that said downhole valve remains in an open position.