高台子油田葡萄花油层油水分布规律

发布时间：2018-03-13 04:14

本文选题：松辽盆地　切入点：高台子油田　出处：《东北石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：高台子油田位于松辽盆地大庆长垣南部的高台子构造上,是两侧基本对称的典型背斜构造,东北部与太平屯构造相接,南部与葡萄花构造相接,西邻齐家古龙凹陷。从上世纪90年代起,针对葡萄花油层开始进行注水开发,经过近20年的多套井网注水驱替,目前研究区已经处于高含水开发后期阶段,但现今所获得的地质认识与油藏特征,已经不能有效指导寻找新增储量和高含水期剩余油挖潜。故而葡萄花油层的油水分布规律及外扩增储潜力研究成为当前研究区面临的主要问题。本文以石油地质学和油气田开发地质学理论为指导,以高台子油田葡萄花油层为靶区,重点针对研究区构造特征、断层特征、储层沉积特征、单一控油圈闭划分、油藏类型、油水分布主控因素及外扩潜力进行系统研究,为高台子油田可持续稳定注水开发提供指导。本文首先基于高台子油田葡萄花油层构造背景、断层特征和储层特征等综合分析,总结出不同构造背景下的断层与储层空间配置关系,将研究区划分为14个单一独立区块。采用区域油藏剖面法、小层含油性法和概率统计法对各个区块油底和水顶进行了精细标定分析,进而对比分析了葡萄花油层各个区块不同时间单元新老油水界限的变化特征。然后进行葡萄花油层油藏类型及油水分布主控因素研究,重点开展了构造特征、储层砂体发育特征、断层侧向封闭性和断砂匹配关系对油水分布规律的控制作用分析,认清了不同尺度构造单元的油水分布规律。在研究区油水分布特征总结分析基础上,以构造和断层特征为基础,以储层砂体展布为边界、以断圈有效性评价为依据,以断砂有效配置为目的进行评价,以沉积相带-构造断裂-砂体展布等方面综合分析为主要依据,进行有利目标区优选,着重寻找在单一独立区块油水边界之内,位于背斜构造缓坡,构造圈闭发育,葡萄花油组储层发育,断储配置关系较好,侧向断层封闭性好,断圈有效性高的有利井区,最终筛选出有利钻井区7个,新增含油面积12.22km2,为高台子油田含水期增储稳产提供了指导。
[Abstract]:Gaotaizi Oilfield is located on the Gaotaizi structure in the south of Daqing Placanticline in Songliao Basin. It is a typical anticline structure with basic symmetry on both sides. Jijia Gulong sag is located in the west. Since -10s, water flooding has been carried out for the Putaohua reservoir. After nearly 20 years of water flooding in many sets of wells, the research area has been in the late stage of high water cut development. But the geological knowledge and reservoir characteristics obtained today, It has been unable to effectively guide the exploration of new reserves and remaining oil in high water cut period. Therefore, the study of oil-water distribution and potential of reservoir expansion in Grape flower reservoir has become the main problem in the present study area. Theory of Geology and Development of Oil and Gas Fields, Taking the Gaohua reservoir in Gaotaizi Oilfield as the target area, the structural characteristics, fault characteristics, reservoir sedimentary characteristics, single oil-controlled trap partition, reservoir types, main controlling factors of oil-water distribution and potential for outward expansion are systematically studied. It provides guidance for sustainable and stable water injection development in Gaotaizi Oilfield. Firstly, based on the comprehensive analysis of the structural background, fault characteristics and reservoir characteristics of the Gaotaihua reservoir in Gaotaizi Oilfield, The relationship between fault and reservoir spatial distribution under different tectonic background is summarized, and the study area is divided into 14 single independent blocks. The oil bottom and water top of each block are calibrated and analyzed by small layer oil content method and probability statistics method. Then, the variation characteristics of new and old oil and water boundaries of different time units in each block of Putaohua reservoir are compared and analyzed. Then, the reservoir types and main controlling factors of oil and water distribution in grape flower reservoir are studied, and the structural characteristics are emphatically carried out. The characteristics of reservoir sand body development, fault lateral sealing and fault sand matching are analyzed to control the distribution of oil and water, and the distribution of oil and water in different scale structural units is clearly recognized. On the basis of summing up and analyzing the characteristics of oil and water distribution in the study area, Based on the structural and fault characteristics, the distribution of the reservoir sand body is taken as the boundary, the effectiveness evaluation of the fault circle is taken as the basis, and the effective allocation of the fault sand is taken as the purpose of the evaluation. Based on the comprehensive analysis of sedimentary facies zone, structural fault-sand body distribution and so on, the favorable target area is selected, and the emphasis is placed on finding out that the anticline is located on the gentle slope of the anticline structure and the structural trap is developed, within the oil-water boundary of the single independent block. The favorable well areas with good reservoir development, good relationship of fault reservoir configuration, good sealing of lateral faults and high effectiveness of fault circle are selected, and 7 favorable drilling areas are screened out. The new oil-bearing area is 12.22 km ~ 2, which provides guidance for increasing reservoir and stable production in water cut period of Gaotaizi Oilfield.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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