【作者】 康德权；

【导师】 陈开远；

【作者基本信息】 中国地质大学（北京） ， 油气田开发工程， 2010， 博士

【摘要】 论文以大庆外围肇州油田的扶余油层为研究对象,力求探讨其高分辨率地层层序及储层预测方法,以图对大庆外围扶杨油层的高效开发提供一条新的思路和方法。大庆外围扶杨油层属于“三低”油藏,储层发育差,砂体分布变化快,油水分布关系复杂,且有3.7×10~8t的难采储量未动用,通过高分辨率层序地层和储层研究,提高单井产量和储量动用程度,对扶杨油层大规模开发具有重大的指导意义。地层对比是一切地质研究的基础,它也同样是本文的基础。在高分辨率层序地层学理论的指导下,在肇州油田州201区块利用测井与地震等基础资料对扶余油层进行高分辨率层序地层对比,将肇州油田州201区块扶余油层分为2个中期旋回、4个短期旋回以及19个超短期旋回。进而通过精细的对比研究,建立了州201区块扶余油层的高分辨率层序地层格架,创新性的提出了高分辨率等时层序地层对比方案。在此基础上,详细分析了各级基准面层序旋回的垂向序列、结构类型和叠置样式。层序格架控制下的地震相及地震储层反演分析是论文的又一项重要工作。在等时的高分辨率层序地层格架内,通过综合多种属性的地震相分析,明确了该区沉积体在各层序旋回内平面展布特征和储集砂体的空间分布规律。创新性地提出“来自东北物源方向的辫状河三角洲体系入湖,河流作用占主导地位,水下分流河道发生迅速迁移改道,造成该地区前缘朵叶体的迁移变化以致增加了砂体分布变化的复杂程度”。并在此基础上,建立测井相解释模型。为更加精细地描述砂层的展布特征,进行了高分辨率地震层序地层解释,精细地解剖扶余油层非常有限的地震反射同相轴的内部结构,进行高分辨率层序地层的解释与追踪,实现肇州油田州201区块高分辨率层序地层等时对比,更加精确地完善了高分辨率层序地层格架。在以上研究认识基础上,探讨了肇州油田州201区块的油气富集特征,发现FⅠ5、FⅡ1和FⅢ5为较有利的储层,三个小层的砂体主要分布在工区中部Z31-301和东北部Z29-291附近。更多还原

【Abstract】 Based on the study of the Fuyu formation in Daqing peripheral Zhaozhou oilfield, the paper has discussed the high-resolution Sequence Sratigraphy,and reservoir description method to provide a new method for the high-efficiency development method. Daqing peripheral Fuyang formation belongs to the " low porosity, low permeability, low production" oilfield. The reservoir is not favorable. The sand distribution changes quickly. The distribution relationship of sand and water is complicated. There is about 3.7×10~8t reserve untouched. Through the application of High-resolution Sequence Stratigraphy and reservoir description to enhance the production of single well and the progress reserves producing steps, which has great guidance for the large-scale development of Fuyang formation.Stratigraphic correlation is the basis of geology study, which is same to this paper. Under the guidance of the High-resolution Sequence Stratigraphy, the well logging and seismic data has been used for the correlation in Block Zhou 201, which has been divided 2 long term cycle, 4 middle-term cycle and 19 short term cycle. Through the precise correlation, The High-resolution Sequence Stratigraphy has been build to provide the innovative correlation plan for the detailed analysis of the vertical sequence, structural pattern and over-lap style of each individual base level sequence cycle.The seismic facies and inversion which are under controlled by the sequence frame is another important task for the paper. Under the isochronal High-resolution Sequence Stratigraphy, through the comprehensive analysis of several properties of geological facies, the lateral and spatial distribution patterns of each individual sequence cycle and sand has been cleared. The paper has drawn the conclusion: The source comes from the north braid river delta to the lake. The river plays a dominant role and the underwater distributary channel migrate quickly and make the front lobate migration change, which has made the sand distribution more complicated. Based on this theory, the well logging facies has been built.To describe the sand distribution more precisely, the High-resolution Sequence Stratigraphy interpretation has been used and the limited seismic reflection event has been studied clearly to interpret and trace the formation. The isochronal High-resolution Sequence Stratigraphy has been applied in Block Zhou201 of Zhaozhou oilfield to improve the High-resolution Sequence Stratigraphy frame more precisely.Based on the above study and research, The oil-bearing mechanisms of Block Zhou201 of Zhaozhou oilfield have been discussed and found three favorable layers: FI5, FII1 and FIII5. These 3 layers distributes mainly in the middle part (well Z31-301) and northeast part (Z29-291) of the study area.更多还原