Abstract: Penglaizhen formation gas reservoir ofXinchang gas field is a shallow layerandmiddle sizewhole package sandstone gas reservoir, which has been exploited extensively more than nine years and has become a low pressure field.Constrainted by the pipe network pressure, the production of the gas reservoir has declined rapidly and it is difficult to maintain its production steadily. In order to keep the gas reservoirs' production steadily,based on the recoverable reserves' research, the paper sets up themodel of the production system of the gas reservoirwith the ReO software and simulates 21 programs ofpressure boost to exploit. The modeling effort proves that the gas reservoir divided into chuanxiao 161, 163 and 156 wellblock and used gas compressor to exploit can maintain production stabilization, and pressure boost to exploit can increase gas production 0. 23447 billion cubic meter, the average recovery factor of single well will increase 8. 26 percent, the gas reservoir whole pressure boost to exploit can take back all the investment andmay get favorable benefit.

Key words: Xinchang gas field, pressure boost to exploit project, recoverable reserves, forcast, economic evaluation