Well production method
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United States of America Patent
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-
Jul 23, 1991
Grant Date -
N/A
app pub date -
Apr 16, 1990
filing date -
Apr 16, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus and method for the production of methane gas from coalbed methane wells. The apparatus includes a production string having spaced side pocket mandrels supporting gas lift valves and defining with a well casing an annulus in the well running continuously without a packer from a coalbed seam to the wellhead and a lift gas injection line extending through the annulus along the production tubing string and connected into the side pocket mandrel for injecting lift gas into the production tubing string to produce well fluids and lift gas in the tubing string while simultaneously producing coalbed methane gas up the annulus. The method of the invention includes the steps of injecting lift gas through a lift gas injection line to a gas lift valve in a well production tubing string and producing well fluids along with lift gas up the tubing string while producing coalbed methane gas up the annulus.
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