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气藏地层压力测量需要大量是的时间进行测试,影响气井的生产工作,而且测试次数有限,不能随时掌握其变化,为了快速有效地评价气藏压力,研究不同的方法,通常计算气藏地层压力采用的方法主要有试井、拟压力分布积分、物质平衡、加权平均法等来计算气藏平均地层压力,拟稳态数学模型法是评价地层压力的有效方法之一,以气藏的拟稳态下流为基础,建立一种利用累积产气量计算火山岩气藏地层压力的方法。实例计算结果表明,计算结果与实际测试结果相关性好,该方法简便易用、计算精度较高,可以减少压力测试工作量。
Gas reservoir formation pressure measurement takes a lot of time to test, affecting the production of gas wells, and the limited number of tests, can not grasp the changes at any time, in order to quickly and effectively evaluate the pressure of reservoirs, to study different methods, gas reservoir formation pressure is usually calculated The methods used include well test, pressure distribution integral, mass balance and weighted average method to calculate average reservoir pressure. The quasi-steady state mathematical model method is one of the effective methods to evaluate formation pressure, Based on the state of flow, to establish a method of calculating the formation pressure of volcanic gas reservoirs using cumulative gas production. The calculation results of the examples show that the correlation between the calculation results and the actual test results is good. The method is easy to use and has high calculation precision, which can reduce the workload of stress testing.