升平地区营城组裂缝预测及成藏条件分析

发布时间：2018-03-06 16:01

本文选题：松辽盆地　切入点：升平地区　出处：《东北石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：升平地区深层营城组天然气藏其主要储层火山岩的岩性、物性特征和天然气藏分布规律都十分复杂,火山岩储层的天然气产能与裂缝的发育程度关系密切,气田开发急需精细的火山岩储层裂缝发育及成藏分析的研究成果。本文通过对升平地区天然裂缝发育特征、MVE应力分析、三维地震资料裂缝预测及天然气成藏条件进行了深入研究,结果表明研究区主要发育构造缝、张裂缝及网状缝,其次为成岩缝。裂缝多数被充填~半充填,只有少部分开启,有效储层段主要以大缝、低角缝以及高角缝为主,镜下观察微裂缝发育,主要为张裂缝、网状缝;天然裂缝的发育方向主要为北西向及近南北向,有少数裂缝发育方向为近东西向,钻井诱导缝主要发育方向为近东西向,少数为近南北向。储集空间类型以构造缝、气孔、断层破碎带的岩石粒间孔隙为主。组合成裂缝-孔洞型储层,储集空间的分布具有强非均质性。该区孔缝的发育带在电阻率、密度及吸收系数属性上的反映比较敏感,通过对这三项属性处理后所形成的综合数具体分析,裂缝发育带的预测与已知钻探结果具有较好的一致性。研究区气藏类型丰富,主要有火山岩断背斜岩性复合气藏、火山岩地层超覆复合气藏和构造-岩性气藏。升平气田主要发育断裂成藏体系,包括深大断裂相伴生,受断层裂缝控制的深部火山岩成藏模式和以断裂作为运移通道的上部砂岩气藏成藏模式。
[Abstract]:Deep city Shengping area and operation of natural gas reservoir group the main reservoir volcano rock lithology, physical properties and gas reservoir distribution are very complex, natural gas production capacity and crack of volcano rock reservoir development degree is closely related to gas field development need fine volcano rock reservoir fracture development and research into the reservoir this paper through analysis. Characteristics of natural fractures developed in Shengping area, the stress analysis of MVE, the prediction of 3D seismic data of crack and gas accumulation conditions were studied, results showed that the study area mainly developed structural fractures, tension cracks and net fracture, followed by diagenesis. Most cracks were filled and half filled, only a few open, effective reservoir mainly to large joints, low angle fractures and high angle fractures and micro fractures under microscope, mainly for crack, reticular joint; the development direction of natural fractures is the main North West and nearly north-south, have A crack growth direction is nearly east-west, the main development direction of seam is nearly EW induced by drilling, a nearly north-south. Reservoir space types in structural fracture, fault fracture zone of rock pores, intergranular pores. Combined into fractured vuggy reservoir, the distribution of the storage space has strong heterogeneity the District Development Zone in hole resistivity, density and absorption coefficient to reflect on the properties of more sensitive, through a comprehensive number of the formation of these three attributes after concrete analysis of fracture zone prediction with the known drilling results have good consistency. The study area is rich in gas reservoir types, main volcano rock faulted anticline lithologic composite gas reservoir, volcano rock stratigraphic composite gas reservoir and structural lithologic gas reservoirs. The main fracture reservoir in Shengping gas field development system, including the deep faults associated, deep volcano rock controlled by fault crack accumulation model and The upper sandstone gas reservoir with fracture as the migration channel is a reservoir forming model.

【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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