Natural gas production optimization switching valve system
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United States of America Patent
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-
Sep 28, 1999
Grant Date -
N/A
app pub date -
Sep 24, 1997
filing date -
Dec 11, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for optimizing natural gas production from a well in the presence of liquids is provided where the well has a casing and a tubing landed therein for producing gas and removing the liquids. The process involves the steps of: opening the casing for gas production and closing the tubing to fluid flow; monitoring differential pressure between the open casing and the closed tubing; detecting a loaded well upon the differential pressure reaching a Well Differential Set Point value; switching gas production to the tubing by closing the casing and opening the tubing; monitoring pressures of the closed casing and the open tubing; removing liquids from the well through the tubing, during which time at least some gas production continues through the tubing during the liquid removal; and, returning gas production to the casing when the well is unloaded of liquid by repeating the above procedure.
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