杏子川油田张岔探区长6油藏地质特征研究

发布时间：2018-03-05 23:11

本文选题：地层划分对比　切入点：沉积微相研究　出处：《西安石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：杏子川油田化子坪张岔区勘探面积约120km2,构造位于鄂尔多斯盆地陕北斜坡中部,长6油层组为本区主力产层。自勘探开发以来,生产层位构造、沉积等基本特征尚未进行深入研究,为提高产能,调整开发动态,需要对研究区储层地质特征有一个全面的和深入的认识。因此,开展张岔区长6油层组储层特征研究具有重要的理论与实际意义。本文以石油地质学、沉积岩石学、储层地质学、油藏描述和储层评价技术方法为理论依据,从基本地质条件出发,对研究区的沉积微相及砂体的展布规律、小层精细化分与对比、储层岩石学特征、储层微观孔隙结构特征、成岩作用、储层物性特征以及储层非均质性等储层特征进行了研究。研究长6的储集岩石类型主要为细粒岩屑长石砂岩。砂岩粒度主要为细粒结构,分选较好,碎屑颗粒以次棱角为主,常呈线状接触。长6油层组砂岩储层填隙物主要为自生矿物,其中胶结物含量占填隙物的主要部分。研究区最主要的孔隙类型是溶蚀粒间孔,其次是原生粒间孔隙和粒内溶孔。研究区长6储层平均孔径、平均喉道分别约为70nm和0.74nm,表现为中孔-细喉型和小孔-微细喉型。研究区长6储层成岩作用主要有压实作用、压溶作用、胶结作用、溶蚀作用、破裂作用等,其中压实压溶作用、胶结作用和溶蚀作用是对储层物性影响最大的成岩作用。结合部署的开发并地质资料,开展沉积相及储层发育规律研究，，进行储层综合评价,为油气藏开发管理和开发调整奠定地质基础。为实现合理有效开发、指导研究区域的滚动勘探开发需要开展长6油藏注水方案及开发对策研究,通过综合地质及开发对策研究,以实现杏子川采油厂的资源接替及产量指标的完成。
[Abstract]:The exploration area of Huaziping Zhangcha area in Xinzichuan Oilfield is about 120 km ~ 2. The structure is located in the middle of the northern Shaanxi slope of Ordos Basin, and Chang 6 reservoir formation is the main production layer in this area. In order to improve productivity and adjust development dynamics, it is necessary to have a comprehensive and in-depth understanding of reservoir geological characteristics in the study area. It is of great theoretical and practical significance to study the reservoir characteristics of Chang 6 formation in Zhangcha area. The theoretical basis of this paper is petroleum geology, sedimentary petrology, reservoir geology, reservoir description and reservoir evaluation techniques. Based on the basic geological conditions, the distribution of sedimentary microfacies and sand bodies in the study area, the fine division and correlation of small layers, the petrological characteristics of reservoir, the microscopic pore structure of reservoir, the diagenesis, the distribution of sedimentary microfacies and sand bodies in the study area are discussed. The characteristics of reservoir physical properties and reservoir heterogeneity are studied. The reservoir rock types of Chang 6 are mainly fine lithic feldspar sandstone. The sandstone reservoir of Chang 6 reservoir is mainly composed of authigenic minerals, in which the content of cementation is the main part of the interstitial material. The most important pore type in the study area is the intergranular solution pore. The average pore size of Chang 6 reservoir is about 70 nm and 0.74 nm, respectively, showing mesoporous and fine throat type and micropore microlarynx type. The diagenesis of Chang 6 reservoir has compaction. Pressure dissolution, cementation, dissolution, fracture, etc. Compaction, cementation and dissolution are the diagenetic processes that have the greatest influence on reservoir physical properties. The study of sedimentary facies and reservoir development law and the comprehensive evaluation of reservoir will lay a geological foundation for the development management and development adjustment of oil and gas reservoirs, in order to realize reasonable and effective development, To guide the rolling exploration and development of the research area, it is necessary to carry out the water injection scheme and the development countermeasure study of Chang 6 reservoir, and through the comprehensive geological and development countermeasure research, to realize the resource replacement and the completion of the output index of Xingzichuan oil production plant.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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