临南斜坡曲9-111断块馆三段精细油藏描述

发布时间：2018-02-28 19:09

本文关键词： 微构造沉积微相储层非均质性曲9-111断块馆三段　出处：《中国石油大学(华东)》2015年硕士论文　论文类型：学位论文

【摘要】：曲9-111断块位于曲堤油田南部,纵向含油层段长,馆三段是其主力开发层位,自投入开发以来,受早期开采条件及对地下复杂地质情况认识不足等限制,一直处于低产状态。本文以高分辨率层序地层学、沉积学、储层地质学、开发地质学、油藏描述等学科理论为指导,运用地层细分对比、微构造研究、精细沉积微相研究、地质建模等技术和方法,以计算机技术为手段,对曲9-111断块馆三段开展了精细油藏描述研究,并建立三维地质模型。综合利用取芯资料和测井资料,在识别长期、中期旋回界面的基础上,将馆三段准层序组划分为3个准层序,并采用“旋回-厚度对比法”及“等高程时间单元对比法”,进一步细分为21个单砂层,建立了研究区的精细地层格架。依托地震资料,运用地震剖面解释技术、相干体技术,在研究区识别出7条四级以上断层;通过井-震结合,对研究区低级序断层做出进一步解释;同时,利用精细对比成果,对各层面开展微幅度构造研究,建立了本区的精细构造模型。在观察描述岩心的基础上,综合考虑测井曲线特征及砂体展布规律,认为研究区馆三段主要发育辫状河沉积,可细分为心滩、河道充填沉积、道间滩地、道间洼地4种微相类型,河流规模自下而上整体呈衰退趋势。通过镜下薄片观察,结合扫描电镜及室内分析化验资料,分别从微观和宏观两个方面对储层特征进行了研究,认为目的层属高孔、高渗储层,非均质性较强,且Ng33储集性能明显优于Ng32、Ng31。运用油气藏精细解剖技术,识别出断层、岩性、复合等多种类型油气藏,结合油气分布特征,认为低级序断层、沉积微环境及微幅度构造对油气分布起到主要控制作用。综合各项研究成果,运用随机性建模与确定性建模相结合的策略,采用相控条件下的序贯高斯模拟方法,利用petrel软件建立了研究区三维地质模型,并完成储量拟合,为开发后期注采方案的调整提供了可靠的地质依据。
[Abstract]:The Qu9-111 fault block is located in the south of Qudi Oilfield, with a long longitudinal oil-bearing formation. The third member of the Kuan formation is the main development horizon. Since it was put into development, it has been restricted by the early mining conditions and insufficient understanding of the complex underground geological conditions, etc. This paper is guided by the theories of high-resolution sequence stratigraphy, sedimentology, reservoir geology, development geology, reservoir description and so on. Geological modeling and other techniques and methods, by means of computer technology, are used to study the fine reservoir description of the third member of Qu9-111 fault block, and to set up a three-dimensional geological model. The comprehensive use of coring data and logging data for a long time to identify, On the basis of the middle cycle interface, the quasi sequence group of Guan3 member is divided into 3 quasi sequences, and 21 single sand beds are further subdivided into 21 single sand beds by using "cycle thickness contrast method" and "equal elevation time unit correlation method". The fine stratigraphic framework of the study area is established. Based on seismic data, seismic section interpretation technique and coherent volume technique are used to identify more than 7 4 grade faults in the study area. The low-order sequence faults in the study area are further explained. At the same time, the fine structural model of the study area is established by using the fine correlation results, and the fine structure model of this area is established, which is based on the observation and description of the core. Considering the characteristics of logging curves and the distribution of sand bodies, it is considered that braided river deposits are mainly developed in the third member of Guanguan formation in the study area, which can be divided into four microfacies types: Xintan, channel filling, interchannel beach, interchannel depressions, and interchannel depressions. The river scale is declining from bottom to top. The reservoir characteristics are studied from the micro and macro aspects through the observation of thin slice under the microscope and the laboratory analysis data. It is considered that the target layer belongs to high porosity. The high permeability reservoir has strong heterogeneity, and the Ng33 reservoir performance is obviously superior to that of Ng32or Ng31.Using the fine anatomical technique of oil and gas reservoir, many types of oil and gas reservoirs are identified, such as fault, lithology, compounding and so on. Combined with the characteristics of oil and gas distribution, the low order fault is considered. Sedimentary microenvironment and micro-scale structure play a major role in controlling oil and gas distribution. Based on the research results and the strategy of combining stochastic modeling with deterministic modeling, the sequential Gao Si simulation method under facies control conditions is adopted. The 3D geological model of the study area was established by using petrel software, and the reserve fitting was completed, which provided a reliable geological basis for the adjustment of injection-production scheme in the later stage of development.
【学位授予单位】：中国石油大学(华东)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

【相似文献】