The Reservoir Heterogeneity and Remaining Oil Distribution in Funing Formation in the Seventh Block of Gaoji Oilfield
The Reservoir Heterogeneity and Remaining Oil Distribution in Funing Formation in the Seventh Block of Gaoji Oilfield
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发表时间：
2003
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通讯作者：
Chen Zhi-xiang
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作者：
Chen Zhi-xiang
高集油田七区阜宁组砂岩储层非均质性强，控制着剩余油的分布，影响开发效果。在平面上，非主力相砂体边缘、地层顶部形成剩余油饱和度高带。在纵向剖面上，非主力储集砂岩受限制，呈透镜状分布。孔隙度、渗透率低，油层厚度小。虽然其剩余油并不丰富，但饱和度却比其他地区高。层内非均质性的主要模式是正韵律和复合正韵律。正韵律储层顶部和复杂正韵律储层顶部、底部均含有丰富的剩余油，为该区的调整提供了可靠的地质依据，指明了有利的调整方向。
The sandstone reservoir of Funing formation in the seventh block of Gaoji oilfield is of high heterogeneity, which controls the distribution of remaining oil and influences the effect of development. In the plane, a zone with high remaining oil saturation was formed in the sand edge of the non-major facies, top position of the formation. In vertical section,non-major reservoir sandstone is restricted and distributed as the lens. The porosity and permeability are low, and the thickness of oil reservoir is small. Although its remaining petroleum is not abundant, saturation is higher than others. The major models for inlayer heterogeneity are positive rhythm and complex positive rhythm. The top of the reservoir with the positive rhythm and the top and bottom of the reservoir with the complex positive rhythm contain abundant remaining oil, which supplies reliable geology foundation and points to the dominant adjustment direction.