Well barrier and method

Abstract

A method for deploying a pump in a well includes attaching a well closure device above a surface control valve, wherein the surface control valve is connected to close a well tubing extending from the well control valve to a predetermined depth in the well. An annular seal and downhole control valve are moved to a selected pump setting depth in the well tubing. The downhole control valve is operable to close the well tubing to fluid flow. The pump is extended into the well tubing at the end of an electrical cable through the well closure device and the well tubing until the pump engages the downhole control valve or the annular seal. The electrical cable is terminated at its surface end with a well penetrator such that the well penetrator seats in the well closure device.

What is claimed is: 
     
         1 . A method for deploying a pump in a well, comprising:
 attaching a well closure device above a surface control valve, the surface control valve connected to close a well tubing extending from the well control valve to a predetermined depth in the well;   moving an annular seal and downhole control valve to a selected pump setting depth in the well tubing, the downhole control valve operable to close the well tubing to fluid flow;   deploying the pump at the end of an electrical cable through the well closure device and the well tubing until the pump engages the downhole control valve or the annular seal; and   terminating the electrical cable at a surface end thereof with a well penetrator such that the well penetrator seats in the well closure device.   
     
     
         2 . The method of  claim 1  wherein the annular seal and the well control valve are deployed on the pump such that the well control valve, the annular seal and the pump are deployed in the well in a single operation. 
     
     
         3 . The method of  claim 1  further comprising electrically connecting a terminated end of the electrical cable to a surface power and control system. 
     
     
         4 . The method of  claim 1  wherein the electrical cable comprises a tubing encapsulated cable. 
     
     
         5 . The method of  claim 1  wherein the pump comprises an electric submersible pump. 
     
     
         6 . The method of  claim 1  wherein the well comprises a bore lining tubular extending at least between the pump setting depth and a permeable formation, an interior of the bore lining tubular being in fluid communication with the permeable formation. 
     
     
         7 . The method of  claim 1  wherein the surface control valve forms part of a valve assembly comprising at least a valve spool, a swab valve coupled to the valve spool to enable insertion of devices into the well tubing and a flow line valve coupled to the valve spool to control fluid flow from the well tubing to a flow line extending from the flow line valve.