Patent ID: 8122962
Filing Date: 2012-02-28
Classification: E21B

Abstract:
1. An apparatus for removing liquid from a well bore having a well casing, said apparatus comprising; (a) a body having an upper end and a lower end, the upper end having a gas inlet and a liquid outlet, the upper end of the body being adapted to releasably engage a lower end of a production tubing, the liquid outlet being adapted to releasably engage a lower end of a return tube whereby the production tubing acts as a supply tube supplying gas to the gas inlet and the return tube is contained within the production tubing, the lower end of the body defining an inlet; (b) the body defining at least one gas supply passage extending through the body and in fluid communication with the gas inlet, and a return passage extending though the body and in fluid communication with the inlet and the liquid outlet, wherein the return passage has a venturi chamber; (c) a jet nozzle directed upwardly and disposed within the venturi chamber, the jet nozzle having an inner bore in fluid communication with the gas supply passage by means of an end member; and (d) adjusting means for adjusting the position of the jet nozzle within the venturi chamber so as to adjust the size of a venturi gap and the liquid:gas ratio in a discharged mixture.