CAJ | 학술논문

针对异常高压火山岩气藏开发过程复杂、成本高、地质储量预测难问题,提出了一种计算异常高压火山岩气藏地质储量的方法,该方法全面考虑了物性参数和岩性参数随地层压力的变化,并将异常高压气藏岩石压缩系数回归成地层流体压力的函数,利用最小二秉法求解方程.实例分析表明,利用该方法计算的地质储量为24.308×10~8m~3,与作图法获得的地质储量24.446×10~8m~3相当,表明该方法可靠、有效,从而为异常高压火山岩气藏预测地质储量提供一定的理论依据.
침대이상고압화산암기장개발과정복잡、성본고、지질저량예측난문제,제출료일충계산이상고압화산암기장지질저량적방법,해방법전면고필료물성삼수화암성삼수수지층압력적변화,병장이상고압기장암석압축계수회귀성지층류체압력적함수,이용최소이병법구해방정.실례분석표명,이용해방법계산적지질저량위24.308×10~8m~3,여작도법획득적지질저량24.446×10~8m~3상당,표명해방법가고、유효,종이위이상고압화산암기장예측지질저량제공일정적이론의거.
In allusion to the problems of complex process, high cost, geological reserves hard to be estimated during the development of abnormal high pressure volcanic gas reservoirs, a method for calculating the geological reserves in the abnormal high pressure volcanic gas reservoirs was proposed, in which the changes of physical property and lithologicalparameters were totally considered and the compressed coefficient of abnormal high pressure gas reservoir rocks was put into the function of formation fluid by retrogression, least squares method is used for solving the equation. The result of example analysis shows that the calculated geological reserves is 24.308×10~8m~3, it is equal to 24.446×10~8 m~3 calcu- lated with graphical method, higher than that of corresponding hydrostatic pressure, which results in the complicated exploratory process, much high cost and difficulty to estimate the initial gas in place. A new method for estimating the initial gas in place of over-pressured gas volcanic reservoir with matrix and fracture was proposed. This method considers the variation of fluid property and rock property with the decrease of pressure, it shows that the method is reliable, effective, and it provides a theoretical basis for predicting the geological reserves in the abnormal high pressure volcanic gas reservoirs.