鄂尔多斯盆地梁镇延安组延9层油藏特征及剩余油初步探讨

发布时间：2018-05-16 17:15

本文选题：鄂尔多斯盆地 + 靖边梁镇　；参考：《西北大学》2015年硕士论文

【摘要】：论文选取鄂尔多斯盆地陕北斜坡中部靖边县梁镇地区延安组延9层作为研究对象,依据大量地质、测井及开发动态资料,对该区目的层进行了地层划分和小层对比,分析了油层构造特征以及油层连通性、储集层物性特征,结合梁镇工区动态资料分析研究区剩余油分布特征,并提出针对性的开发调整建议。取得的主要认识如下：1梁镇研究区内构造为小型鼻状构造与小型穹窿构造,在靠近工区南部发育断裂。2将梁镇油区延9地层组划分为延91、延92、延93三个小层。延91地层厚度集中分布在5m-20m之间,延92地层厚度主要分布与lOm-30m之间,延93地层厚度主要介于20m-40m之间。3延91和延92小层是梁镇油区的主要储油层,延93层砂层虽然发育良好,但是油层相对不发育,连通性也相对较差。4 该区延9油层仅有20%的注水受效井,注水未收效油井约占80%,延91和延92小层是剩余油赋存最多的层位。针对这种情况,提出了以油水井转注为主的开发调整的建议。
[Abstract]:This paper selects Yan'an formation of Yanan formation in Liangzhen area, Jingbian County, northern Shaanxi Basin as the research object. According to a large number of geological, logging and development dynamic data, stratigraphic division and small layer correlation are carried out for the target layer in this area. The characteristics of reservoir structure, reservoir connectivity and reservoir physical properties are analyzed. Combined with the dynamic data of Liangzhen work area, the distribution characteristics of remaining oil in the study area are analyzed, and suggestions for development adjustment are put forward. The main results are as follows: the structure in the study area of Liangzhen is a small nose structure and a small dome structure. The Yan9 stratigraphic formation of Liangzhen oil area is divided into three sub-layers, Yan91, Yan92, and Yan93, by developing fault .2 near the southern part of the work area. The thickness of Yan 91 is mainly distributed between 5m-20m, and the thickness of Yan 92 is mainly distributed between lOm-30m and Yan 93. The thickness of Yan 93 is mainly between 3.3-Yan 91 and Yan92 between 20m-40m and Yan92 is the main reservoir in Liangzhen oil area, and the sand layer of Yan 93 is well developed. However, the reservoir is relatively undeveloped, and the connectivity is relatively poor. Only 20% of the wells affected by water injection in Yan9 reservoir in this area, 80 wells with no water injection effect, Yan91 and Yan92 layers are the most abundant layers of remaining oil. In view of this situation, the paper puts forward some suggestions for development adjustment of oil-water well transfer injection.
【学位授予单位】：西北大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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