准噶尔盆地SN16井B-SN44井区清一段岩性圈闭识别

发布时间：2018-03-19 23:28

本文选题：岩性圈闭　切入点：沉积特征　出处：《东北石油大学》2017年硕士论文　论文类型：学位论文

【摘要】：为在SN16井B—SN44井区新发现、重查落实断块、低幅度构造、地层-岩性等多类型圈闭,精细刻画细小断裂,搞清砂层组间沉积特征及纵横向变化规律。针对研究区内白垩系、侏罗系,完成目标层位的构造解释工作,同时利用常规反演及叠前反演等方式对目的层段清水河组一段的储层条件进行预测。利用这些解释成果,开展岩性圈闭识别工作,优选含油气的有利区带。本文以构造和岩性的精细解释为基础,综合录井和测井资料,通过对地震资料进行钻井地震联合统层,三维可视化构造精细解释,地震储层预测,井震联合沉积微相划分,将沉积相划分结果、地震属性分析结果、沉积相预测结果和反演结果相统一,对岩性圈闭进行识别和评价。研究区主要目的层清水河组K1q12砂层组的沉积微相类型为三角洲前缘亚相,水下分流河道为其主要微相类型,具备形成岩性圈闭的可能性,而且从构造背景上看,研究区北部的斜坡区是形成岩性圈闭的有利区域,特别是白垩系清水组K1q12砂层组整体上为东南倾的单斜,很容易形成岩性上倾尖灭,是形成岩性圈闭的理想场所。在研究区清水河组K1q12砂层组识别了4个岩性圈闭,其中SN49井南岩性圈闭,圈闭较可靠,储盖条件好,处于油气运移的优势方向上,为本区岩性油气藏勘探的有利区。
[Abstract]:In order to find out the new discovery in B-SN44 well area of SN16 well, reexamine and implement fault block, low amplitude structure, stratigraphic lithology and other types of traps, fine portray of fine faults, make clear the sedimentary characteristics of sand formation and the regularity of longitudinal and horizontal variation. In view of Cretaceous system in the study area, In the Jurassic system, the structural interpretation of the target horizon is completed, and the reservoir conditions of the first member of the Qingshuihe formation in the target interval are predicted by conventional inversion and prestack inversion. Using these interpretation results, the lithologic trap identification is carried out. On the basis of fine interpretation of structure and lithology, this paper synthesizes logging and logging data, through drilling and seismic joint formation of seismic data, 3D visualization structure fine interpretation, seismic reservoir prediction, The results of sedimentary facies division, seismic attribute analysis, sedimentary facies prediction and inversion are unified. The lithologic traps are identified and evaluated. The sedimentary microfacies of the K1q12 sand formation of Qingshuihe formation in the study area are delta front subfacies, and the underwater distributary channel is the main microfacies type, which has the possibility of forming lithologic traps. Moreover, from the structural background, the slope area in the northern part of the study area is a favorable area for the formation of lithologic traps, especially the K1q12 sandbed formation of the Cretaceous clear water formation, which is generally a monoclinal slope with a southeasterly dip, which is easy to form a lithologic updip pinnacle. Four lithologic traps have been identified in the K1q12 sand formation of Qingshuihe formation in the study area, in which the south lithologic trap of SN49 well is relatively reliable, the reservoir and cap conditions are good, and it is in the dominant direction of oil and gas migration. It is a favorable area for lithologic oil and gas reservoir exploration in this area.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.13

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