庆城地区长6储层特征研究

发布时间：2018-05-01 23:42

本文选题：庆城地区 + 长6储层　；参考：《西安石油大学》2015年硕士论文

【摘要】：庆城地区长6储层受到沉积环境、成岩作用、构造等诸多因素的影响,储层储集性能和储集结构差异大,储层具有非均质强等特点。采用储层地质学、测井地质学、地质统计学、构造地质学等多学科相结合的理论方法,运用岩心观察、铸体薄片鉴定、图像粒度分析、X-射线衍射分析等现代测试手段对该区开展了关于区域构造、沉积特征与砂体展布、地层对比及含油层系划分、沉积微相划分、储层物性及非均质性、孔隙类型与孔隙结构、储层评价等方面的系统研究。研究结果表明:工区长6储层主要为一套浊积水道砂体,以粉-细粒长石岩屑砂岩为主,成分成熟度低,结构成熟度中等;储集空间主要为残余粒间孔隙和长石溶蚀孔隙,孔喉结构以小孔细喉-微喉型为主,研究区孔隙度与渗透率具有较好的正相关性,为一套典型的低孔、低渗到特低孔、特低渗储层。储层非均质性较强,以正韵律为主;长63时期储层以II类和III类为主。以上研究对于合理有效的开发研究区长6储层,提供了可靠的地质依据。
[Abstract]:Chang 6 reservoir in Qingcheng area is affected by many factors such as sedimentary environment diagenesis structure and so on. The reservoir performance and reservoir structure are different and the reservoir has the characteristics of strong heterogeneity and so on. Adopting the theory method of reservoir geology, logging geology, geostatistics, tectonics and so on, using core observation, casting thin section identification, Some modern testing methods, such as image granularity analysis and X-ray diffraction analysis, have been carried out in this area on regional structure, sedimentary characteristics and distribution of sand bodies, stratigraphic correlation and division of oil-bearing strata, sedimentary microfacies, reservoir physical properties and heterogeneity. Systematic study on pore type and pore structure, reservoir evaluation and so on. The results show that the reservoir is mainly composed of a set of turbidite channel sand bodies, mainly silt-fine feldspar lithic sandstone, with low compositional maturity and moderate structural maturity, and the reservoir space is mainly composed of residual intergranular pores and feldspar dissolution pores. The pore throat structure is dominated by micropore fine throat and microlarynx. The porosity and permeability of the study area have good positive correlation, which is a typical set of low porosity, low permeability to very low porosity and very low permeability reservoir. The reservoir heterogeneity is strong, mainly in positive rhythm, and in Chang63 period, class II and III are the main reservoirs. The above research provides a reliable geological basis for the reasonable and effective development of Chang 6 reservoir.
【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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