下扬子地区黄桥区块溪桥-2断块龙潭组致密砂岩油藏储层评价

发布时间：2018-03-30 13:23

本文选题：致密砂岩　切入点：储层非均质性　出处：《中国石油大学(华东)》2015年硕士论文

【摘要】：黄桥区块溪桥构造带溪桥-2断块构造上属于下扬子盆地南京坳陷的东北部,介于苏北中、新生代盆地与苏南新生代隆起两个性质不同的构造单元的转折部位的黄桥斜坡。主要含油层位为二叠系上统龙潭组(P2l)。龙潭组油藏为层状岩性-构造油藏,储层分布主要受构造和岩性双重控;龙潭组油藏埋藏浅,含油层段集中在龙潭组顶部;储层孔、渗低,非均质性较强,局部裂缝、溶蚀孔洞发育,栖霞组二氧化碳随裂缝体系沟通至龙潭组油层,形成天然二氧化碳驱的油气同产的致密砂岩油藏。对储量进行了计算,龙潭组油藏平面上为一个断块,纵向上分布在龙潭组上砂组顶部,共计1个计算单元,计算原油地质储量为139.32×104t。在综合地质研究与精细储层评价的基础上,指出了储层在平面上的有利成岩相带,并为油藏下一步开发提供建议。
[Abstract]:The Xiqiao 2 fault block in Xiqiao structural belt of Huangqiao block belongs to the northeast of Nanjing depression in the Lower Yangtze Basin, which lies in the middle of northern Jiangsu. Huangqiao slope in the turning position of two different tectonic units in Cenozoic basin and Cenozoic uplift in southern Jiangsu Province. The main oil-bearing horizon is the Permian Upper Longtan formation, the Longtan formation reservoir is layered lithology-structural reservoir. The reservoir distribution is mainly controlled by structure and lithology, the reservoir of Longtan formation is shallow buried, the oil-bearing formation is concentrated on the top of Longtan formation, the reservoir is porous, low permeability, strong heterogeneity, local fractures, and dissolution pores, The carbon dioxide of Qixia formation communicates with the fracture system to the reservoir of Longtan formation and forms a tight sandstone reservoir with natural carbon dioxide flooding. The reserves are calculated and the reservoir of Longtan formation is a fault block on the plane. Vertically distributed at the top of the upper sand formation of the Longtan formation, there is a calculation unit with a calculated oil geological reserve of 139.32 脳 10 ~ 4 t. On the basis of comprehensive geological study and fine reservoir evaluation, the favorable diagenetic facies belt of the reservoir on the plane is pointed out. It also provides suggestions for further development of reservoir.
【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

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