古83葡萄花油层沉积微相与布井优化设计研究

发布时间：2018-10-05 09:40

【摘要】：松辽盆地中央坳陷区齐家-古龙凹陷中部古龙油田葡萄花油层沉积微相的研究已成为了解松辽盆地沉积及演化规律的重要一环。开发的主要目的层位葡萄花油层,通过研究发现葡萄花油层储层物性较好,含油面积连片分布,试油产量也相对较高,是储量和产量增长的重要接替区之一,同时也为松辽盆地油气储集的勘探开发与研究奠定基础,从而进一步挖掘松辽盆地的油气潜力,为油田生产发展提供地质依据。在研究区内结合本区葡萄花油层的地震属性、物性特征、常规测井曲线等资料分析对103口单井进行了单井沉积微相的识别,建立沉积模式,沉积微相划分,研究区为河流三角洲前缘亚相沉积,发育水下分流河道、水下分流间、水下天然堤、河口坝、席状砂、水下决口扇、远砂坝等7种主要微相,并对井网的沉积微相进行了精细解剖。全面分析油气藏类型及油水分布油水分布关系,确定了物性较好的水下分流河道砂体为油层,席状砂则一般为干层或油水同层;同时由于油水分布同样受到构造控制,在构造较为平缓的地方,会发育纯油层,该区油层油气成藏主控因素储层物性和断层影响,主要油藏类型为构造-岩性油藏对预测的砂体进行了优选,优选出古83区块有利砂体,进行开发井网部署。
[Abstract]:The study of sedimentary microfacies of Gouhua reservoir in the central Qica-Gulong depression of Songliao Basin has become an important part of understanding the sedimentary and evolution laws of Songliao Basin. The main target layer of the development is Grape flower reservoir. Through the research, it is found that the reservoir physical property of the Putaohua reservoir is better, the oil-bearing area is distributed continuously, and the oil test output is relatively high, which is one of the important replacement areas for the reserve and production growth. It also lays a foundation for the exploration, development and research of oil and gas reservoirs in Songliao Basin, thus further excavating the oil and gas potential of Songliao Basin and providing geological basis for the production and development of oil fields. In the study area, 103 single well sedimentary microfacies were identified, sedimentary models were established and sedimentary microfacies were classified by combining seismic attributes, physical property characteristics and conventional logging curves of Putaohua reservoir in the study area. The study area is composed of seven main microfacies, such as river delta front subfacies deposition, underwater distributary channel, underwater natural embankment, estuarine dam, sheet sand, underwater fissure fan, far sand dam, etc. The fine dissection of sedimentary microfacies of well pattern was carried out. Based on the comprehensive analysis of oil and gas reservoir types and oil-water distribution relationships, it is determined that the sand body of underwater distributary channel with good physical properties is oil layer, while the sheet sand is generally dry layer or oil-water layer, and the distribution of oil and water is also controlled by structure. Where the structure is relatively gentle, pure oil reservoirs will be developed. The reservoir physical properties and faults are the main factors controlling oil and gas accumulation in this area. The main reservoir types are structure-lithologic reservoirs, and the predicted sand bodies are selected optimally. The favorable sand body in Gu83 block was selected and the development well pattern was deployed.
【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】：TE324;P618.13

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