松辽盆地北部泰康隆起带姚家组岩性圈闭识别及评价研究

发布时间：2018-05-24 04:13

本文选题：松辽盆地北部 + 泰康隆起带　；参考：《东北石油大学》2017年硕士论文

【摘要】：松辽盆地为国内一个非海相沉积盆地,目前油气资源在世界上是最富饶的。随着勘探的深入以及日趋完善的理论,构造控制形成的油气藏发现几率逐步减小,这就迫使在寻找油气资源中完成中浅层油气勘探由构造控制的油气藏向岩性地层控制的油气藏的转变。岩性地层圈闭形成的核心条件是地层、岩性在横向上不连续。岩性圈闭识别及评价研究为潜在油气勘探与井位优选部署提供地质理论依据,对于突破松北西斜坡区姚家组油气勘探的新动态具有举足轻重的实践意义和现实借鉴价值。本文选取的研究对象是松北泰康隆起带,以钻井、测井、取芯、地震、地质综合资料为基础,充分运用采用层序地层学、沉积学以及构造等地质理论与技术方法,深化基础地质认识,借助前人研究理论、方法及成果,来构建松北西泰康隆起带层序地层格架,解析纵向上储-盖组合形成难易程度、对油气成藏形成是否有利等,综合评价寻找有利的圈闭目标。通过研究取得了如下结论和认识:1.对泰康隆起带姚家组进行四级层序划分,建立了精细层序地层格架。通过单井四级层序旋回的划分,完成了数口单井的沉积相剖面图,和四级层序单元的工业化制图,为后续研究奠定了基础。2.在四级层序划分的基础上,井震结合建立了泰康隆起带二维区目标沉积体的高频层序地层格架。完成了目的层细分层系的地震地质沉积相剖面10条,明确了四级层序格架内目标沉积体的空间展布及发育特点。为精细落实沉积体范围奠定了基础。3.建立了研究区姚家组组的层序地层格架,姚家组为一个三级层序SQ6。4.研究明确了西斜坡区姚家组沉积体系域中发育地层超覆与三角洲前缘砂体形成的地层-岩性圈闭。5.松北西斜坡区三角洲前缘相发育,与其相关的地层、岩性圈闭类型较多。通过构造和岩性体的综合研究落实了各种类型的圈闭。SQ6-LST地层超覆尖灭和前缘砂体配置构成地层-岩性圈闭;SQ6-HST三角洲前缘相砂体与鼻状构造叠合构成构造-岩性圈闭。6.在研究沉积体展布和构造配置关系的基础上,对泰康隆起带部分二维区构造-岩性圈闭、地层-岩性圈闭等进行综合分析评价,SQ6-HST(姚二+三段)的3个圈闭为有利圈闭。7.研究认为在泰康隆起带斜坡部位易形成岩性上倾尖灭带或地层-岩性超覆带,砂体厚度适中,纵向上易形成良好的储盖组合,是有利的成藏。在有利圈闭评价的基础上,通过对姚一段(SQ6-LST)、姚二+三段(SQ6-HST)形成的各种类型的有利圈闭进行深入的综合评价,在西斜坡区优选有利目标圈闭1个。
[Abstract]:The Songliao basin is a non marine sedimentary basin in China. At present, the oil and gas resources are the most abundant in the world. With the deepening of the exploration and the increasingly perfect theory, the discovery probability of the oil and gas reservoirs formed by structural control gradually decreases, which forces the oil and gas exploration in the search for oil and gas to complete the lithology of the oil and gas reservoirs controlled by the structure. The core conditions for the formation of lithostratigraphic traps are strata and lithology in lateral discontinuity. The identification and evaluation of lithologic traps provide geological theoretical basis for potential oil and gas exploration and well location optimization, which is very important for breaking through the new developments in the oil and gas exploration of the Yao family in the west slope area of Songbei. The research object of this paper is the Matsukita Taeko uplift zone, which is based on drilling, logging, core extraction, seismic and geological comprehensive data, and using sequence stratigraphy, sedimentology and tectonics and other geological theories and techniques to deepen the basic geological knowledge, with the help of previous research theories, methods and achievements. The sequence stratigraphic framework of the West Taikang uplift zone, Songbei, is constructed to analyze the difficulty of formation of reservoir cap assemblage in the longitudinal direction, to find out whether the formation of oil and gas accumulation is favorable, and to find a favorable trap for comprehensive evaluation. Through the study, the following conclusions and understanding are obtained: 1. the four sequence stratigraphy of the Yao Jia formation in Taikang uplift was divided and the fine sequence stratigraphy was established. By dividing the four order sequence cycles of single well, the sedimentary facies profiles of several single wells and the industrial mapping of the four sequence sequence units are completed. Based on the division of the four order sequence, the well seismic combination has established the high frequency sequence stratigraphic framework of the two-dimensional area target sedimentary body of the Taikang uplift zone. 10 sections of the seismic geological sedimentary facies section of the stratified stratified strata have clearly defined the spatial distribution and development characteristics of the target sedimentary bodies in the four order sequence framework. For the fine implementation of the sedimentary range, the sequence stratigraphic framework of the Yao Jia formation in the study area was established by.3.. The Yao Jia formation has defined the Yao's family in the west slope area for a sequence of three sequence SQ6.4.. In the sedimentary system, the stratigraphic and lithologic traps formed by the stratigraphic and delta front sand bodies are developed in the delta front of the Songbei west slope area of.5., and there are many types of lithologic traps in the strata related to it. On the basis of the relationship between the structure and structure of the sedimentary bodies, the structure lithologic trap.6. of the SQ6-HST delta front edge facies sand body and the nasal structure formed a comprehensive analysis and evaluation of some two-dimensional tectonic lithologic traps and stratigraphic lithologic traps in the Taikang uplift zone, and 3 cycles of SQ6-HST (Yao two + three section). The study on the favorable trap.7. suggests that lithologic dip and lithologic overlying zones are easily formed on the slope of the Taikang uplift zone, and the sand body is moderate in thickness, and is easy to form a good reservoir cap assemblage in the longitudinal direction. On the basis of favorable trap evaluation, various classes of Yao Yi section (SQ6-LST), Yao two + three segment (SQ6-HST) are formed. A comprehensive evaluation of the favorable traps is carried out, and 1 favorable target traps are selected in the west slope area.
【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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