特低渗储层PQ区试井资料解释方法研究及应用

Interpretation Technique Research and Application of Well Testing Data of the PQ District of Low-Permeability Reservoirs

对于低渗透、特低渗透油藏，压力恢复曲线往往不出现径向流，不能求地层压力和其他参数。根据叠加原理和van Enverdingen ＆ Hurst的叠加函数理论，提出了新的解释方法。用该方法能有效解释早期段测试数据，同时还解决了其他早期段分析方法不能求地层压力的矛盾。

For low-permeability or extra-low permeability reservoirs, radial flow does not often emerge in a pressure build-up curve, so the formation pressure and other parameters can not be worked out. A new explanation method is proposed in the paper according to the superposition principle and Van Enverdingen ＆ Hurst superimposed function theory. The solution method can be used to explain effectively the early segment testing data. Moreover, it also solved a contradiction that the formation pressure can not be worked out by other early segment analysis.