异常高压气藏地质储量计算新方法  

A new method for the reserves calculation in abnormal high pressure gas reservoir

作　　者：朱义东[1] 黄炳光[1] 章彤 王怒涛[1] 

机构地区：[1]西南石油学院石油工程学院,四川新都610500 [2]新疆油田分公司彩南油田作业区,新疆乌鲁木齐830000

出　　处：《大庆石油地质与开发》2005年第1期10-12,共3页Petroleum Geology & Oilfield Development in Daqing

摘　　要：由于压力的下降, 导致异常高压在气藏开发过程中储层岩石呈现再压实特征, 致使岩石的有效压缩系数发生变化, 从而使物质平衡方程式中Ce发生改变, 导致气藏地质储量计算不够准确。因此,从物质平衡方程式出发, 建立以G和Ce为未知变量的新方程, 通过非线性回归方法求出最佳解。由于该方法所需参数较少且方法简单, 精度较高, 在气藏开发中具有较强的实用性。In the middle of development process of overpressured gas reservoir,drawdown can lead to reconsolidation characteristic of reservoir rock,change of effective compressibility C_p and C_e of material balance equation, thus lead to inaccuracy of initial gas in place(IGIP) in gas reservoir. On account of these, based on material balance equation this paper establishes a new equation with variable of G and C_e, and gets optimal solution through nonlinear regression method. On account of lesser parameters, straightforward method and higher precision, this method has a strong practicability in the middle of development of gas reservoir.

关 键 词：异常高压气藏 地质储量 物质平衡 废弃压力 

分 类 号：TE122.23[石油与天然气工程—油气勘探]