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鉴于气井钻杆测试流体流动期压力变化小这一事实，建立了定压生产条件下关井的压力恢复试井分析数学模型，应用标准化拟压力和拟时间将油井ＤＳＴ资料解释方法应用于同类条件下的气压试井资料解释问题，给出了分析气井ＤＳＴ压力恢复资料的直线方程，应用这种方法对气井ＤＳＴ资料进行解释，可以获得原始地层压力、地层渗透率和表皮系数。

A NEW METHOD FOR PRESSURE BUILDUP ANALYSIS OF GAS WELL DRILLSTEM TESTS

??In the view of the fact that gas well drillstem test with a small change in flow period,the mathematical model of shut-in pressure buildup analysis in the condition of constant-pressure production is set up.Normalized pseudopressure and pseudotime are applied to correlate gas-well DST results with the analogous oil-well test solutions.A straight line equation for pressure buildup analysis is presented.Application of the method to interpreting gas-well DST data may provide the initial reservoir pressure,the formation permeability and the skin effect.A field example is presented.