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流动单元(又称储层流动单元)是20世纪80年代中后期才逐渐形成的一种储层描述技术,它为储层非均质性的研究提供了一种有效的方法,对于油藏二次采油后期的精细油藏描述研究具有重要意义。本文结合梁11断块丰富的静、动态资料,以密井网条件下的精细储层描述和构造研究为基础,综合考虑岩性、物性、电性及非均质性和水淹特征,通过多元回归分析,建立了储层物性与表征储层渗流特征的参数FZI之间的关系式,由此将该区储层划分为Ⅰ、Ⅱ、Ⅲ、Ⅳ类流动单元。并在此基础上,把流动单元研究与剩余油研究结合起来,认为Ⅲ、Ⅳ类流动单元在高含水后期的油藏开发中,水淹程度较轻,容易形成剩余油富集区,由此可为提高油气采收率提供可靠的地质依据。
Flow cell (also called reservoir flow cell) is a kind of reservoir description technology that formed gradually in the mid and late 1980s. It provides an effective method for reservoir heterogeneity research. For reservoir two The study of fine reservoir description in the later period of secondary oil recovery is of great significance. Based on the study of fine reservoirs and tectonics under tight well conditions, the paper combines the rich static and dynamic data of Liang 11 fault block with lithologic, physical, electrical and heterogeneity characteristics and flooding characteristics Multiple regression analysis establishes the relationship between reservoir physical properties and FZI, which characterizes the reservoir seepage characteristics, and divides the reservoir into Ⅰ, Ⅱ, Ⅲ and Ⅳ flow units. On the basis of this, combining the study of flow cell with the study of remaining oil, it is concluded that the flow events of Ⅲ and Ⅳ flow units are less flooded in the late stage of high water-cut reservoir development and the remaining oil-rich areas are easy to form Can provide a reliable geological basis for improving oil and gas recovery.