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文章利用钻井、测井以及生产资料,通过油藏剖面图和油层厚度图的编制,确定了研究区油水边界,明确了研究区油层富集状态,并重新核算了研究区油气资源量。研究认为馆陶油层是块状边顶水油藏,部分区域发育底水。馆陶组油藏整体呈近似不规则的椭圆形和圆形,油层中部较厚,四周逐渐变薄,地层岩性对其分布影响较小,缺少明显的盖层,并且没有统一的油水界面。由岩石组分及其结构的变化导致的地层物性降低是油藏被封阻的主要原因。根据实际吞吐生产井、SAGD生产井和井温监测资料,提出井位部署的安全界限为距边水150 m。
In this paper, the oil and water boundary of the study area is determined by drilling, well logging and production data. The oil and water boundary in the study area is determined. The oil accumulation status in the study area is clarified and the amount of oil and gas resources in the study area is recalculated. The study shows that the Guantao reservoir is a block-shaped top water reservoir, and the bottom water is developed in some areas. The reservoir of Guantao Formation is generally oval and round with an approximate irregular shape. The middle part of the reservoir is thick and gradually thinner around. The lithology of formation has less influence on its distribution. There is no clear cap layer and no uniform interface between oil and water. The decrease of formation physical property caused by the change of rock composition and its structure is the main reason for the blockage of reservoirs. Based on actual throughput production wells, SAGD production wells and well temperature monitoring data, it is proposed that the safe margin for well site deployment be 150 m from the edge water.