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以志丹油田长4+5油层组为例,依据岩心、测井及其综合解释成果资料,在单井夹层识别基础上,采用点-线-面的研究思路,发现研究区主要发育泥质和钙质夹层两类。夹层分布主要呈片状不连续性,延伸距离较短。夹层的发育阻碍了重力驱替,增加了纵向水淹的非均质性,降低了纵向波及体积和驱油效率,也影响着剩余油在平面上的分布,严重影响油田开发效果。
Taking the Chang 4 + 5 reservoir group of Zhidan Oilfield as an example, based on the data of core, well logging and their comprehensive interpretation results, based on the single well sandwich identification and the research thought of point-line-surface, it is found that the main developmental mud And calcium sandwich two categories. Sandwich distribution is mainly flaky discontinuity, extending a short distance. The development of the mezzanine hinders the displacement of gravity, increases the longitudinal inhomogeneity, decreases the longitudinal wave volume and oil displacement efficiency, affects the distribution of remaining oil in the plane and seriously affects the oilfield development effect.