摘要
以四川盆地碳酸盐岩气藏典型气井为剖析对象,针对压降法中采用恢复未达稳定的静压引起计算结果不合理、压降图出现斜率不同的折线等异常情况,提出了相应的处理方法。对物质平衡法、弹性二相法、产量不稳定分析预测法等不同方法计算结果的误差进行了分析,并对不同方法的适应性进行了评价。为合理使用不同方法进行碳酸盐岩储层气井控制储量评价提供了技术参考。
Aiming at some typical gas wells of carbonate rock reservoir in Sichuan Basin, we provide some countermeasures forabnormal situations in pressure drop method, including unreasonable calculated result caused by unstable static pressure, and brokenlines with different slope for pressure drop chart. In addition, the error calculated from different methods of material balance, elastictwo phase and unstable production forecast is analyzed; and the feasibility of different methods is also evaluated. The results may provide technological reference to evaluate controlled reserves of gas well in carbonate reservoir through different methods.
出处
《天然气勘探与开发》
2011年第1期13-17,21,共6页
Natural Gas Exploration and Development
关键词
碳酸盐岩
气井
控制储量
计算方法
评价
carbonate rock, gas well, controlled reserves, calculation method, evaluation
