古龙油田葡萄花油层地震解释与断裂特征研究

发布时间：2018-03-12 14:33

本文选题：古龙油田　切入点：葡萄花油层　出处：《东北石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：古龙油田位于黑龙江省大庆市大同区,随油田勘探程度增加,以往对本区的地震解释精度已不能满足油田实际生产的需要,有必要对本区四个地震工区(巴彦查干、他拉哈、常家围子、龙南)进行高精度的层位及断层解释,另本区油水关系复杂,控制因素较多,迫切需要研究构造、微幅度、断层的几何学、运动学特征以及断层侧向封闭性对油水分布的影响,来分析总结油水分布的主控因素。以层序地层学、构造地质学为指导,利用地震数据并结合钻井、测井、试油、岩心等数据,以地震资料和测井资料的有机结合为前提,采用大比例尺显示,逐线解释方法解释层位,采用多种相干体结合以及三维可视化技术来识别厘定断层并绘制葡萄花油层顶面深度构造图,采用趋势面法识别与手动识别相结合的方法识别微幅度构造,统计了断层的几何学特征、运动学特征,采用断层泥比率(SGR)来定量评价葡萄花油层顶面断层的侧向封闭性,得出以下认识,目的层顶面整体呈现“一鞍两凹三隆”的构造形态,共识别圈闭47个,微幅度构造80个;断裂密集带对河道砂体的走向和延伸范围起到控制作用,地垒、地堑、顺向断阶以及反向断阶均可能成为油气有利富集区,断裂主要在早白垩纪时期、青山口组沉积时期、姚家组-嫩一二段沉积时期三个时期活动;本区断层侧向封闭性多为好和中等,封闭性差的断层多集中在西斜坡处,封闭性好的断层对油气起到很好地遮挡作用,分析了微幅、断层组合、期次、密集带以及断层封闭性对油水分布的影响并给出优选井位3口。
[Abstract]:Gulong oilfield is located in Datong District in Heilongjiang city of Daqing Province, with oil exploration in this area to increase the degree of previous seismic interpretation accuracy can not meet the actual needs of oil production, it is necessary for the four earthquake area in this region (Bayan Chagan, targan, Changjiaweizi, Longnan) horizon and fault interpretation in high the accuracy of the other oil-water relationship is complex, the control of many factors, it is urgent to study the structure, micro amplitude, fault geometry, influence on the distribution of oil and water and the closed kinematic characteristics of lateral fault, to analyze and summarize the main control of oil-water distribution factors. Based on the sequence stratigraphy, structural geology as a guide, using seismic data and in combination with drilling, logging, oil testing, core data, with the combination of seismic data and well logging data is the premise of the large scale display, by line interpretation method using coherent interpretation horizon, combination and 3D As a technology to identify and determine fault drawing of Putaohua reservoir in the depth of the top structure map, the identification method of trend surface identification and manual identification method of combining micro amplitude structure, statistical geometric characteristics, fault kinematics, the fault gouge ratio (SGR) to the lateral quantitative evaluation of Putaohua reservoir in the top surface of fault sealing of the following understanding, to the top of the overall presentation of "structural shape of a saddle, a total of two concave samlung" identify 47 traps, micro amplitude structure 80; fault zones to the channel sand body and extends to the control function, Horst, graben, consequent fault order and reverse fault order may be the favorable oil and gas enrichment zone, the fracture was mainly in the early Cretaceous period, during sedimentary period of Qingshankou formation, three sedimentary period of Yaojia period of one or two tender activities; for good and moderate lateral sealing of the fault, poor sealing ability Most of the faults are located at the west slope. The well sealed faults play a good role in shielding the oil and gas. The influence of micro amplitude, fault combination, stage, dense zone and fault sealing on the distribution of oil and water is analyzed, and 3 wells are selected.

【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】：P618.13;P631.4

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