Enhancing Liquid Lift From Low Pressure Gas Reservoirs

摘要

Liquid loading in low production gas wells is a nuisance for production engineers in the natural gas industry. It is essential to maintain gas well free of liquid; otherwise, the production will be severely reduced by backpressure of the accumulated liquids, and by reduced gas relative permeability in the surrounding formation. The most fundamental solution for the liquid loading problem is to select tubing diameter for the well such that the natural energy in the reservoir will give a gas velocity sufficient to lift liquids from the sand face of the reservoir to the surface. Unfortunately, the optimum diameter varies for different periods in the life of a well.