Well apparatus
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United States of America Patent
Stats
-
Nov 25, 1986
Grant Date -
N/A
app pub date -
May 20, 1985
filing date -
May 20, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A well system employs a pump to lift liquid through a primary tubing and subsurface safety valve. The tubing passes through a packer and a vent valve vents gas from the well through the packer. The power transfer means may extend through the vent valve and the vent valve may also control a cross-over in the packer for recirculation of liquid to the pump when the well is shut-in. The vent valve has associated therewith a kill valve permitting pumping of kill fluid into the well. The vent remains closed in the presence of ambient pressure up to a selected value and above this value the kill valve opens thus permitting testing of the packer with annulus pressure below the selected pressure and pump through to kill the well with pressure above the selected pressure.
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