车城油田沙河街组油藏精细描述

发布时间：2018-04-14 23:23

本文选题：油藏描述 + 测井处理　；参考：《东北石油大学》2017年硕士论文

【摘要】：车城油田属于中孔低渗透岩性构造油藏,构造复杂,单井钻遇油层多,含油砂体范围小,自投入开发以来,逐渐暴露出地层能量不足,产量递减快,注采矛盾较为突出,注水开发难度大等问题,严重影响了油田的开发水平和效果。虽然多年来对各油田构造、储层进行了深化研究,但缺乏整体的认识及综合研究方法的总结。针对上述问题,本文以沉积学、石油地质学、储层地质学、测井地质学、油藏精细描述等理论为基础,结合沙河街组油藏开发初期的研究成果,以井-震结合为手段,对研究区进行了小层的精细划分对比和构造精细解释;岩心观察、测井相分析、沉积相对比剖面相结合,开展沉积相及沉积微相研究;采用三维建模技术,建立油藏地质模型和属性模型,深化油藏认识。通过井震结合,在充分落实构造基础上,对油田110口井进行油组、小层重新进行统一的细分对比和调整,细分单砂体,落实油藏的储量规模;对主力含油砂体进行沉积相研究,精细描述砂体的分布规律及沉积相变化特征;在小层精细对比以及对本区构造、沉积微相研究的基础上,综合地质、测井和油藏动态多种信息资料,建立研究区三维可视化地质模型和属性模型。本文通过对沙河街组油藏的精细描述研究,确定有效砂体的展布特征,明确油藏的储量规模;确定研究区储层沉积相类型为近岸滨浅湖沉积,沉积微相为近岸滩坝微相、滩砂微相、湖相泥坪沉积;通过建立三维可视化地质模型和属性模型,不仅深化了对油层剩余油形成方式及分布规律的认识,并确定了对应的挖潜对策,对指导复杂断块油田的注水开发具有重要意义。
[Abstract]:City oilfield belongs to medium porosity low permeability lithologic structural reservoir, complex structure, single well drilling reservoir, oil sand body range is small, since has been in development, gradually exposed the formation energy shortage, rapid production decline, injection production contradiction is prominent, the problem of waterflood development. It has seriously affected the development of oil fields and levels the effect of each oil field for many years. Although the structure, reservoir are researched deeply, but the lack of overall understanding and comprehensive research methods. Aiming at the above problems, this paper based on sedimentology, petroleum geology, reservoir geology, logging geology, reservoir description and other theories, combining the research achievements of Shahe Street Group reservoir at the initial stage of development, with the combination of well and seismic methods, the small layer fine division and structural interpretation of the study area; core observation, logging facies analysis, sedimentary facies than section with sedimentary facies and carry out Study on sedimentary microfacies; three-dimensional modeling technology, establishing reservoir geological model and property model, deepening reservoir understanding. Through combination of well and seismic, fully implement the structural basis of oil group of 110 wells in the small, layer re subdivision and comparison and adjustment of unity, subdivision of the single sand body reserves, the implementation of reservoir study on phase; the main oil-bearing sandbody, phase change characteristics of the distribution and deposition of fine description of sand; in small layer contrast and structure in the area, based on the study of sedimentary microfacies, comprehensive geological, logging and reservoir dynamic variety of information, establish research area of 3D visualization of geological model and property model through the study of reservoir fine description of Shahe Street Group, to determine the distribution of effective sand body, clear reservoir reserves; determine the reservoir sedimentary facies for coastal lacustrine deposits, deposits Micro facies is the coastal beach bar microfacies, sand beach facies, lacustrine mudflat deposition; through the establishment of three-dimensional geological model and property model, not only to deepen the understanding of formation and distribution of remaining oil reservoir, and to determine the corresponding potential countermeasures, has important significance to guide the waterflood development of complex fault block oil Tian.

【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13

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