摘要
利用岩芯资料分析了中东H油田MB2组颗粒灰岩与泥粒灰岩储层的岩石学特征、物性特征和储层的孔隙结构特征,研究结果表明,MB2组碳酸盐岩两种储层有较强的非均质性。根据孔喉半径分布曲线特征,把储层划分为大、中、小3种孔隙结构,结果显示MB2组上段颗粒灰岩以大孔和中孔为主,下段泥粒灰岩以中孔和小孔为主。利用毛管孔径划分的3种孔隙结构刻度了核磁T2谱,结果显示其与核磁T2谱划分的3种孔隙具有很好的一致性,找到了用核磁准确评价储层的孔隙结构的一种有效途径。此外,还对MB2组储层进行了产能预测。
The lithologies of the MB2 Formation in H Oilfield are mainly composed of grainstone and packstone. The core data are used to analyze the lithology,physical property and pore structure property. The result shows that the carbonate reservoirs in H Oilfield are of complicated heterogeneity. The pore systems are classified into Macro pore,Mezzo pore and Micro pore according to the mercury injection. Marco pores and Mezo pores are predominant in limestone with a grainstone texture in the upper interval of MB2 Formation,and the packstone pore system mainly consists of Mezzo pore and Micro pore. The Nuclear Magnetic Resonance Logging Tool(CMR)has been employed to characterize the pore system of the limestone reservoirs. The results of the CMR pore size distribution agree with the core data in general. The NMR can evaluate the reservoir accurately.Based on the study result,the productivity prediction of the MB2 formation is made.
作者
姜均伟
徐星
JIANG Junwei;XU Xing(Greatwall Drilling Company Ltd.,PetroChina,Chaoyang,Beijing 100101,China;Halfaya Oilfield Company Ltd.,Dubai 500486,UAE)
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2016年第5期33-40,共8页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
CNPC集团公司海外重点战略大区勘探技术研究与实践项目(2014D-0907)
关键词
颗粒灰岩
泥粒灰岩
孔隙结构
孔径
T2谱
产能预测
grainstone
packstone
pore structure
pore throat
T2 spectrum
productivity forecast
