胡尖山地区长6油藏成藏规律研究

发布时间：2018-02-26 05:37

本文关键词： 胡尖山地区长6油藏地层划分沉积相成藏规律　出处：《西安石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：鄂尔多斯盆地延长组长6油层组作为新勘探开发的岩性油藏,已成为近年来油气勘探和开发的重点,并且已经取得了较大的开发效果和经济效益。对长6油层的成藏规律进行进一步研究,有利于该油层组的后续勘探开发,对长庆油田的稳产和进一步发展具有十分重大的意义。本文针对长6油层组典型油藏的解剖,并结合沉积相、物性、含油特征和测井特性,分析了油气成藏的主控因素。根据沉积旋回、岩性、电性组合特征,通过岩电、沉积微相-测井曲线的响应关系等地层划分标志,对主要含油层位延长组含油层段长6油层组作进一步的划分。结合区域地质构造背景,确定研究区储层沉积环境及沉积体系,确定了该研究区主要为三角洲前缘沉积体系。根据测井、岩芯及动态资料,进行连井相剖面分析,综合确定沉积微相以及砂体平面展布规律,并绘制了相应的图件。以区域内现有的粒度分析、岩心取样观察及压汞实验等分析测试数据等,综合测井、研究开发区域的地质情况以及早期的生产资料等为基础,开展储层孔隙类型与孔隙结构特征等研究,分析储层层间、层内、平面的变化和储层孔隙结构及其非均质性、油层连通情况及其主控因素与四性关系,预测了有利储集层段。在上述工作基础上,结合储层预测和沉积相研究成果,预测有利储层的平面分布特征,指出有利储集区带。根据油藏解剖及生、储、盖等其他成藏条件,总结研究区长6油藏成藏主控因素和油气分布规律。
[Abstract]:As a new lithologic reservoir, Yanchang No. 6 formation of Yanchang formation in Ordos Basin has become the focus of oil and gas exploration and development in recent years. The further study on the reservoir formation law of Chang 6 reservoir is beneficial to the further exploration and development of the reservoir formation. It is of great significance for the stable production and further development of Changqing Oilfield. This paper aims at the anatomy of typical reservoirs of Chang 6 formation and combines with sedimentary facies, physical properties, oil bearing characteristics and logging characteristics. Based on the characteristics of sedimentary cycle, lithology and electrical combination, the main controlling factors of oil and gas reservoir formation are analyzed. According to the characteristics of sedimentary cycle, lithology and electrical combination, the stratigraphic classification marks are obtained by means of rock electricity, the response relation of sedimentary microfacies to logging curve, etc. The Chang 6 reservoir formation of the oil bearing formation of the main oil-bearing formation Yanchang formation is further divided. Combined with the regional geological tectonic background, the sedimentary environment and sedimentary system of the reservoir in the study area are determined. It is determined that the study area is mainly delta front sedimentary system. According to the logging, core and dynamic data, the facies profile of continuous well is analyzed, and the distribution law of sedimentary microfacies and sand body plane is determined synthetically. Based on the existing particle size analysis, core sampling observation and mercury injection test data, comprehensive well logging is used to study the geological conditions and early production materials in the development area. The characteristics of pore type and pore structure of reservoir are studied, and the changes of interlayer, intra-layer, plane, pore structure and heterogeneity of reservoir are analyzed, and the connection of reservoir and its main controlling factors are related to the four properties. The favorable reservoir formation is predicted. On the basis of the above work, combined with the reservoir prediction and sedimentary facies research results, the plane distribution characteristics of favorable reservoir are predicted, and the favorable reservoir zone is pointed out. According to the reservoir anatomy and other reservoir forming conditions, such as generation, reservoir, cap, etc. The main factors of reservoir formation and the distribution of oil and gas in Chang6 reservoir are summarized.
【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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