巴楚—麦盖提地区奥陶系油气富集规律与有利区带优选

发布时间：2018-11-17 11:12

【摘要】：论文以塔里木盆地巴麦地区奥陶系地层格架建立、构造演化、储层预测、油气成藏研究为重点,以复杂地区的油气成藏期综合判别技术和中小尺度裂缝孔洞型碳酸盐岩储层预测技术为关键技术,深入开展储层发育规律、储层预测技术、成藏规律及控制因素研究,建立成藏模式,优选有利勘探区带与目标,为巴麦地区勘探部署提供了科学依据。通过研究认为巴麦地区奥陶系发育加里东中期I幕、加里东晚期、海西早期多期岩溶,形成多套岩溶储层。通过储层发育条件与古隆起形成演化分析认为玉北地区与巴楚隆起东段区域成为巴麦地区奥陶系油气勘探的有利区带。玉北地区油气富集受储层与断裂控制,海西晚期活动后期稳定构造带是有利的油气聚集区带,中部多期岩溶发育,盖层良好地区是较有利地区。巴麦地区奥陶系主要有三大成藏期：海西早期及其以前油藏以破坏为主；海西晚期为大规模油藏的有效成藏期；喜马拉雅期为天然气的聚集期以及油藏调整期。同时通过技术攻关建立了适合巴麦地区三维区域储层预测技术方法,包括四项技术组合：地震属性分析技术、地貌及岩溶雕刻技术、断裂裂缝检测技术、综合评价分析技术。综合古地貌、断裂、所处构造位置、储盖组合、油气成藏等情况,划分出10个有利区带,为巴麦地区奥陶系油气勘探新突破奠定了良好的基础。
[Abstract]:This paper focuses on the establishment of Ordovician stratigraphic framework, structural evolution, reservoir prediction, and oil and gas accumulation in Bama area, Tarim Basin. Taking the comprehensive discrimination technology of oil and gas reservoir forming period in complex area and the prediction technology of small and medium scale fracture porosity type carbonate rock reservoir as the key technology, the research on reservoir development law, reservoir prediction technology, reservoir forming law and controlling factors are carried out in depth. The establishment of reservoir formation model and the selection of favorable exploration zones and targets provide scientific basis for exploration and deployment in Bamai area. It is considered that the Ordovician developed in the middle Caledonian stage I, the late Caledonian and the early Hercynian karstification, forming several sets of karst reservoirs. Based on the analysis of reservoir development conditions and the formation and evolution of paleouplift, it is considered that the areas of the northern part of Yubei and the eastern section of the Bachu uplift are favorable zones for the exploration of Ordovician oil and gas in the Bamai area. The accumulation of oil and gas in Yubei area is controlled by reservoir and fault. The stable structural belt in late Hercynian period is a favorable zone for oil and gas accumulation. The Ordovician in Bamai area has three major reservoir forming periods: the early Hercynian and its previous reservoirs are mainly destroyed; the late Hercynian is the effective reservoir forming period for large-scale reservoirs; the Himalayan period is the gas accumulation period and the reservoir adjustment period. At the same time, the technical methods suitable for 3D regional reservoir prediction in Bamai area are established, including four technical combinations: seismic attribute analysis, geomorphology and karst carving, fracture detection, and comprehensive evaluation and analysis. By synthesizing paleogeomorphology, faults, location of structures, assemblages of reservoirs and caprocks, and oil and gas accumulation, ten favorable zones have been divided into 10 favorable zones, which have laid a good foundation for new breakthrough in exploration of Ordovician oil and gas in Bamai area.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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