凝析气井不稳定试并解释

INTERPRETATION OF UNSTABLE WELL TEST FOR CONDENSATE GAS WELLS

王新海 夏位荣 郭康良 陈平中

Wang Xinhai Xia Weirong Guo Kangliang Chen Pingzhong

凝析气井存在复杂的相变与相态重新分布,对试井压导曲线有较大影响,正确选定分析直线段是解释成败的关键。在计算高压物性参数时,应考虑凝析油的影响,试井分析中的产量应把凝析油产量折算到总产量中,方可克服解释的误差。以塔里木盆地一凝析气井试井资料作了说明。

Complicated phas variation and phase state redistribution exist in condensate gas wells.This may result in considerable effect on derivative curves of well test pressure. To choosethe straight section of well test analysis accurately is the key factor in successfully interpreting well test. The effect of condensate oil must be considered in calculating the parameters ofhigh-pressure physical property. In order to avoid interpretation error,the productivities usedin well test analysis should also include condensate oil productivity. This has been proved bywell-test information of a condensate gas well in Tarim Basin.

10.11743/ogg19950316