直罗油田张家湾区长8油藏有利区预测

发布时间：2018-06-18 11:01

本文选题：直罗油田 + 张家湾区　；参考：《西安石油大学》2015年硕士论文

【摘要】：本文以石油地质学、沉积岩石学、测井地质学、储层地质学和地球化学等理论为指导,以实验测试技术为依托,综合应用野外露头、钻井、测井及生产动态资料,从沉积相和砂体展布研究入手,对长8储层的岩石学特征、成岩作用、物性特征、孔隙结构特征、四性关系以及宏观非均质性进行了研宄和分析,结合烃源岩特征与油气富集的控制影响作用,并提出有利区带。研宄结果表明,研宄区长8储层构造平缓,为西倾单斜背景下发育的近东西向低缓鼻状隆起;长8主要发育三角洲前缘亚相的水下分流河道、河道侧翼及分流间湾沉积微相;储层的岩石类型主要为细-极细粒岩屑长石砂岩和长石砂岩,孔隙类型以残余粒间孔为主,储层物性较差,属于低、特低孔-超低渗储层。根据常规物性资料分析,长8段平均孔隙度为10.02%,平均渗透率为0.31xl0_3,2;研宄区长8成岩作用类型主要为机械压实作用、胶结作用、交代作用和溶蚀作用;研宄区长8储层下伏长9烃源岩厚度大、范围广、分布稳定,是长8储层的主要油源。结合各类测试资料及研究分析,得出沉积作用、储层物性、构造作用和烃源岩分布是控制含油性的主要因素,综合该区含油性控制因素和试油资料,对主力层长82进行了有利区筛选,预测I类勘探目标有利区4个,II类勘探目标有利区2个,III类勘探目标有利区2个,为研宄区后续勘探开发工作提供了可靠的地质依据。
[Abstract]:Guided by the theories of petroleum geology, sedimentary petrology, logging geology, reservoir geology and geochemistry, and relying on the experimental test technology, this paper synthetically applies field outcrop, drilling, logging and production dynamic data. The petrological characteristics, diagenesis, physical properties, pore structure characteristics, four-sex relationships and macroscopic heterogeneity of Chang 8 reservoir are studied and analyzed from the study of sedimentary facies and sandbody distribution. Combining the characteristics of source rock and the controlling effect of oil and gas enrichment, a favorable zone is proposed. The results show that Chang8 reservoir in the study area has a gentle structure, which is near east-west low slow nose uplift developed under the background of westward inclination monoclinal, and Chang8 mainly develops subfacies of delta front subfacies, channel flanking and sedimentary microfacies of interdistributary bay. The rock types of the reservoir are mainly fine-very fine-grained feldspathic sandstone and feldspathic sandstone. The pore types are mainly residual intergranular pores. The reservoir physical properties are poor and belong to low-low porosity-ultra-low permeability reservoirs. According to the analysis of conventional physical properties, the average porosity and permeability of Chang 8 are 10.02 and 0.31 脳 10 / 2 respectively, and the diagenesis types of Chang 8 are mainly mechanical compaction, cementation, metasomatism and dissolution, and the main diagenesis types of Chang 8 are mechanical compaction, cementation, metasomatism and dissolution. Chang8 reservoir is the main oil source of Chang8 reservoir because of its large thickness, wide range and stable distribution. Combined with all kinds of test data and research and analysis, it is concluded that sedimentation, reservoir physical property, tectonism and distribution of hydrocarbon source rock are the main factors controlling oil bearing, and synthesizing the controlling factors of oil bearing and oil testing data in this area. In this paper, the favorable areas of the main formation Chang82 are screened, and the favorable areas of class I exploration targets are predicted. There are two favorable areas of type II exploration targets and two favorable areas of type III exploration targets, which provides a reliable geological basis for the further exploration and development of the study area.
【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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