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缝洞型碳酸盐岩油藏油井压力恢复测试后,受多缝洞地质特征影响,双对数曲线往往呈现串珠状,常规试井解释无法建立该类油藏模型并得到准确地层参数。分析了串珠状油藏模型试井特征,利用有限元数值试井技术,并结合物探、地质研究成果,对井眼位于缝洞内和裂缝通道位置2口井进行拟合分析,并采用全压力史拟合验证,最终准确描述油藏内外边界,得到不同渗流区域储层渗流特征,提高了试井解释精度,为该类型复杂多缝洞体油藏试井解释提供参考。
After the oil well pressure recovery test of fractured-cavity carbonate reservoir is influenced by the geological characteristics of multi-fractured vugs, the logarithmic curve tends to beaded. Conventional well test interpretation can not establish such reservoir model and obtain accurate formation parameters. The well testing characteristics of Beaded reservoir model are analyzed. By using the finite element numerical well test technology and the results of geophysical and geologic research, the wellbore is fitted with two wells located in the crevice and the crevice channel. History fitting and verification. Finally, the reservoir internal and external boundaries are accurately described, and the seepage characteristics of reservoirs in different seepage areas are obtained, the precision of well test interpretation is improved, and reference is made to the well test interpretation of this type of complex multi-fractured cave reservoirs.