渤海湾盆地渤中19-6气田潜山储层裂缝表征与产能预测方法
Method of Fracture Characterization and Productivity Prediction of 19-6 Buried-Hill Fractured Reservoirs, Bohai Bay Basin
由于渤中19-6气田潜山裂缝性储层的储集空间多样、非均质性很强,且制约产能的主控因素认识不清,从而造成潜山裂缝性储层的产能预测困难. 为了解决这一难题,综合岩心、测井、地质等资料分析了潜山裂缝性储层的特征,并基于CT扫描实验定量表征裂缝,研究裂缝微观特征,形成了以裂缝渗透率为核心的一系列裂缝参数的计算方法,建立了潜山裂缝性储层的产能预测模型,大幅提高了潜山裂缝性储层的产能预测精度. 研究结果表明,潜山裂缝性储层的裂缝渗透率主要由裂缝的长度、宽度及连通性控制,与孔隙度的大小无明显关系,可以通过斯通利波反演的总渗透率与基质渗透率之差计算得到,其中基质渗透率计算的相对误差为28.50%,总渗透率计算的相对误差为15.56%;综合考虑潜山裂缝性储层的裂缝渗透率、裂缝纵向连通性和有效厚度,建立了渤中19-6气田潜山裂缝性储层的产能预测模型,其中裂缝渗透率计算结果的准确性决定了潜山裂缝性储层产能预测结果的可靠性.
渤中19-6 / 潜山裂缝性储层 / 裂缝微观特征 / 裂缝渗透率 / 产能预测 / 测井评价 / 石油地质
Bozhong 19-6 / buried-hill fractured reservoirs / fracture microscopic features / fracture permeability / productivity prediction / logging evaluation / petroleum geology
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国家自然基金企业创新发展联合基金项目“渤海潜山裂缝性储层地震响应机理及精确成像方法(U19B2008;YSLH-ZX-01-2021)
中海石油(中国)有限公司联合攻关项目“渤中19-6变质岩潜山储层测井评价关键技术研究与应用”(YSLH-ZX-01-2021)
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