Abstract: An apparatus and method for injecting surfactant into a well for coal bed methane (CBM) recovery, tight sand gas extraction, and other gas extraction techniques provides for the mixing of surfactant and water near the downhole end of the well, maximizing water removal for gas recovery. The apparatus may include a check valve that feeds a nozzle to atomize the spray of surfactant into the well production tube. Surfactant is not sprayed directly into the formation, thereby protecting the formation from damage and recovering surfactant even in the case where water is not present. The capillary tube feeding surfactant to the check valve may be placed externally to the production tube to facilitate ease of cleaning and clearing of the production tube.

Abstract: An apparatus for monitoring the pressure in a gas well at a downhole location is disclosed. The apparatus uses a capillary tube connecting a downhole monitoring assembly with a pressure gauge or gauges at the wellhead. The downhole monitoring assembly and capillary tube are located externally to the production tube so as not to block the production tube for cleaning or other uses. A passage from the interior of the production tube passes gas to the capillary tube in order to measure the pressure at the downhole end of the production tube.

Abstract: An apparatus and method for injecting surfactant into a well for coal bed methane (CBM) recovery, tight sand gas extraction, and other gas extraction techniques provides for the mixing of surfactant and water near the downhole end of the well, maximizing water removal for gas recovery. The apparatus may include a check valve that feeds a nozzle to atomize the spray of surfactant into the well production tube. Surfactant is not sprayed directly into the formation, thereby protecting the formation from damage and recovering surfactant even in the case where water is not present. The capillary tube feeding surfactant to the check valve may be placed externally to the production tube to facilitate ease of cleaning and clearing of the production tube.