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裕民地区沉积特征研究

Study on Sedimentary Characteristic in Yumin Area

【作者】 孙鹏鹏

【导师】 卢双舫;

【作者基本信息】 东北石油大学 , 矿产普查与勘探, 2011, 硕士

【摘要】 裕民地区位于黑龙江省肇源县境内,构造位置处于松辽盆地二级构造单元朝阳沟阶地和长春岭背斜带之上。随着位于构造有利位置和砂体较发育区块的相继开发,作为潜力区块的裕民地区急需开展石油地质综合研究,满足部署及储量评价的需求。为指导裕民地区扶余油层下一步的勘探开发,本文在前人研究基础上,以高分辨率层序地层学为指导,结合沉积学、测井地质学等理论知识,综合应用测井、钻井、录井等资料建立裕民地区扶余油层层序地层格架,将研究区扶余油层划分为2个长期旋回、6个中期旋回、17个短期旋回,在此基础上对研究区所有探井、评价井及开发井进行了精细小层划分与对比。研究区扶余油层主要发育三角洲平原相沉积,本文通过岩心观察描述及测井资料综合研究建立区内测井相模式,在此基础上进行单井相、联井相分析及平面相组合,再结合提取的地震属性图和地震相图,绘制各小层的沉积微相图,精细描述各层沉积特征及其变迁规律。本文通过岩心观察、普通薄片以及铸体薄片等相关资料的研究,认为研究区主要经历了机械压实、胶结、交代及溶蚀等成岩作用。其中机械压实、胶结等破坏性成岩作用,是深层碎屑岩储层物性变差的主导因素;大气水淋滤、溶蚀等建设性成岩作用,促进了储层次生孔隙发育,较大程度改善了扶余油层储集物性。

【Abstract】 Yumin area is in Zhaoyuan Coutry of Heilongjiang Province,and located in Songliao basin second-order tectonic units Chaoyanggou terrace and Changchunling anticlinal belt.With the successive development of located in tectonic advantageous position and sand more development block,in order to meet the needs of development and reserve evaluation,as a potential blok,we are urgently needed to conduct oil geologic integrated research in Yumin areas.In order to guide the next exploration and development,we established the sequence framework and divided Fuyu oil layer into 2 long cycles,6 medium cycles and 17 short cycles in this area which is based on the study of the forest assets management,used high-resolution sequence stratigraphy as the theoretical guidance,and combined the theoretical knowledge of sedimentology and logging,on the basis of the study we conducted the substratum division and correlation to all exploration wells, evaluation wells and development wells.It is developed delta plain facies in Fuyu oil layer of Yumin areas,first of all,we established well logging facies in this area which is based on core descriptions and comprehensive research of logging data,based on the study we conducted the analysis of single well facies,multi-well facies and the combination of plane facies to the study area,then we draw the fine sedimentary facies map to all small layers with the combination of seismic attribute and seismic facies,finally we described the sedimentary characteristics and the law of vicissitude. In this paper,by used the research of core obeservation,thin section,blue epoxy resin-inpregnated tuhin section and other related documents, we holds that it experienced mechanical compaction, cementation, dissolution in this area, Mechanical compaction, cementation are destructive diagenesis,which is the dominant factor for the worse of the deep clastic play reservoir property; and mereorological water filter,erosion and other constructive diagenesis,which can promot the development of the secondary porosity and the property of resvoir.

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