气藏参数的正交试验法估计

根据正交试验法原理，提出了一种估计气藏参数的全局优化算法：以压力、压力导数的加权残差平方和为目标函数，利用正交表的均衡分散性以及计算机的快速运算能力，直接从未知参数（如渗透率、井储系数、表皮系数、边界距离、窜流系数、弹性储容比等）的可能变化范围内，通过试算，快速寻找出最佳参数组合。算法不依赖于初始参数值的选取，不需要讨论模型解的有关分析性质。实例计算结果表明了该方法的有效性。

胜利油区典型气藏开发参数的数值模拟研究

该文选择了三个不同开发阶段、不同构造类型的典型气藏 ,核实了气藏储量及边底水强弱程度 ;研究了气田潜力及剩余储量分布 ;分析了井网、开采速度对采收率的影响 ,预测了气藏动态 ,并优化了开发方案。为三个典型气藏进一步开采及同类型气藏的开发提供了理论依据和研究方法。

俄罗斯科维克金凝析气田石油地质特征及资源评估

科维克金凝析气田位于俄罗斯伊尔库茨克州日加罗夫地区，是拟订中俄输气管线的气源区，该气田距伊尔库茨克市北北东方向35公里。

New method of calculating formation parameters of low permeability gas reservoir

The data of modified isochronal testing of gas well is just used to calculate gas well deliverability. Fully utilizing well test data make it possible to obtain formation parameters, such as gas well deliverability, effective permeability and skin factor at the same time. Based on transient flow theory, the pressure drawdown equation of gas unsteady seepage can be deducted. One simulated case is used to illustrate the applicability of the proposed method. The result of analyzed case shows that the proposed method can provide accurate estimate of formation permeability and skin factor compared with the method of Homer curves.