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元城油田元54井区位于陕甘宁盆地伊陕斜坡至天环坳陷间的西倾大单斜上,研究区的主要储集层为三叠系晚期和侏罗系早期地层的延长组、富县组、延安组所组成。该井区则位于元城油田的东北部,处于陕北斜坡中段坪庄北—张新庄鼻褶带局部鼻状隆起上。综合油藏不同开发阶段生产动态资料,并结合静态地质资料,进行油藏工程研究,从油藏开发现状、采液采油指数变化、压力变化、产量递减、油水见效、含水上升、水驱状况以及采收率等诸多方面进行了分析,对长1和延10油藏目前低产低效井的成因进行了分析。
The Yuan 54 well block of Yuancheng Oilfield is located on the west-dip monocline in the Shaan-Gan-Ning basin between the Yi-Shan slope and the Tianhuan Depression. The main reservoirs in the study area are the extension of the Early Triassic and Early Jurassic strata , Fuxian group, Yan’an group formed. The well area is located in the northeast of Yuancheng Oilfield, in the middle of the northern slope of Ping Shanzhuang North - Zhang Xinzhuang nasal fold on the local nasal uplift. Based on the dynamic data of production in different development stages of the reservoir and the combination of static geological data, reservoir engineering research is carried out. Based on the status quo of reservoir development, the change of production recovery index, pressure change, decreasing production, effective oil and water, water cut, water flooding and Oil recovery and many other aspects of the analysis of the Chang 1 and Yan 10 reservoirs are currently low yield inefficient wells were analyzed.