曲流河储层隔夹层研究——以秦皇岛32-6油田为例

发布时间：2018-11-28 16:32

【摘要】：为揭示曲流河储层隔夹层对剩余油分布和油层水淹的影响,通过分析物性参数与米采油指数关系得出隔夹层物性上限,并选择自然伽马、电阻率、厚度为主要敏感参数,采用灰色关联法进行权重系数计算,得到隔夹层判别指数及综合判别图版。在秦皇岛32-6油田南区明化镇组下段Ⅰ油组应用证实,该判别图版符合率达96%;在剩余油滞留带底部和油层水淹层顶部进行调整挖潜,生产效果明显。在曲流河储层隔夹层发育区,隔夹层延缓采油井含水上升速度;隔夹层不发育区域,易形成水串区,导致相邻隔夹层发育区形成剩余油滞留区。这种认识对油田开发中后期产能挖潜有指导作用。
[Abstract]:In order to reveal the influence of intercalation of meandering river reservoir on remaining oil distribution and reservoir flooding, the upper limit of physical properties of interlayer is obtained by analyzing the relationship between physical parameters and meter oil recovery index, and natural gamma, resistivity and thickness are selected as the main sensitive parameters. The grey correlation method is used to calculate the weight coefficient, and the discriminant index and the comprehensive discriminant chart are obtained. The application in the lower member I of the Minghuazhen formation in the south district of Qinhuangdao 32-6 oilfield proves that the coincidence rate of the discriminant pattern is up to 96, and the adjustment and tapping of potential are carried out at the bottom of the remaining oil retention zone and at the top of the water-flooded zone of the reservoir, and the production effect is obvious. In the interlayer development area of meandering river reservoir, the interval interlayer delays the water cut rising speed of the oil well, and the undeveloped intercalation zone is easy to form the water string area, resulting in the remaining oil retention area formed in the adjacent interlayer development area. This kind of understanding has the instruction function to the oil field development mid-later stage productivity excavates the potential.
【作者单位】：中海石油(中国)有限公司天津分公司渤海石油研究院;
【基金】：国家重大科技专项“海上油田丛式井网整体加密及综合调整技术”(2008ZX05024-004)资助
【分类号】：TE31

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