敖9-敖南工区黑帝庙油层地震解释及储层预测

发布时间：2018-02-26 16:24

本文关键词： 敖9-敖南工区黑帝庙油层地震解释地质统计学反演储层预测　出处：《东北石油大学》2017年硕士论文　论文类型：学位论文

【摘要】：敖9-敖南工区位于松辽盆地中央坳陷区大庆长垣二级构造带南端的敖包塔构造上,区域内发育的多条北西向大断层将该构造切割为多个断块。黑帝庙油层组所对应的地层为嫩三—嫩四段,其沉积环境主要为三角洲前缘和前三角洲亚相,发育水下分流河道、席状砂、河口坝、分流间湾等沉积微相,沉积砂体互相叠置、互相交错。为提高研究区目的层的构造精度并实现储层砂体的精确刻画,开展了精细构造解释及储层预测的研究。利用合成地震记录建立井震关系,综合多种技术手段完成对研究区目的层的精细构造解释并对区内目的层的构造特征及断裂特征进行了分析。根据工区内探井、开发井及试油结果确定了100km2的重点研究区进行储层预测的深入研究。提取并优选出符合率较高的属性对储层砂体的平面展布特征进行定性预测。利用稀疏脉冲反演及地质统计学反演对工区内的三维地震资料进行反演并通过反演效果对比确定地质统计学反演为储层定量预测的最终反演方法并提取砂体厚度。通过沉积环境分析,综合单井相解释结果、优势地震属性及地震反演结果对研究区目的层进行沉积微相的刻画。在上述研究基础上结合试油资料对区内油藏进行综合分析并优选有利区部署井位。通过对敖9-敖南工区黑帝庙油层的精细构造解释及储层预测研究得到以下的认识:工区内发育北西向及北东东向断层,圈闭类型有四种:断块、断鼻、断背斜、构造背斜,其中断块最为发育,是工区内的主要圈闭类型;区内黑一油层组砂体发育,从属性切片及反演结果上看,砂体具有呈南北展布的特征,相对于黑一油层组黑二油层组砂体不发育;黑一油层组各小层沉积环境为三角洲前缘,河道发育,河道两侧发育大面积的席状砂,河口坝零星展布,黑二油层组沉积环境为三角洲前缘向前三角洲过度,主要的沉积微相类型为河口坝及席状砂呈零星展布;区内主要发育断层-岩性油藏;有利区主要集中在HI3、HI5、HI6小层敖268-66构造及葡381构造上。
[Abstract]:The Ao9-Aonan work area is located on the Aobata structure at the southern end of the Daqing Placanticline secondary structural belt in the central depression of the Songliao Basin. The formation corresponding to the Heidimiao oil formation is the third and fourth member of Nen, whose sedimentary environment is mainly delta front and pre delta subfacies, and the subfacies of underwater distributary channel are developed, the formation is divided into several fault blocks by many NW-trending faults in the region, and its sedimentary environment is mainly delta front and pre-delta subfacies. The sedimentary microfacies, such as sheet sand, estuarine dam and distributary bay, are superimposed and interlaced with each other. In order to improve the structural accuracy of the target layer in the study area and to achieve the accurate characterization of the reservoir sand body, The fine structure interpretation and reservoir prediction are studied. The well earthquake relationship is established by using synthetic seismic records. The fine structure interpretation of the target layer in the study area is completed by synthesizing various technical means, and the structural and fault characteristics of the target layer in the study area are analyzed. According to the exploration wells in the working area, The results of development well and oil test confirmed the key research area of 100 km ~ 2 for reservoir prediction. The attributes with high coincidence rate were extracted and selected to predict the horizontal distribution characteristics of reservoir sand body qualitatively. The sparse pulse inversion was used to predict the reservoir sand distribution characteristics qualitatively. The inversion of 3D seismic data in the working area is carried out by modeling and geostatistical inversion, and the inversion results are compared to determine that the geostatistical inversion is the final inversion method for quantitative reservoir prediction and to extract the thickness of sand body. Synthesizing the results of single well phase interpretation, The dominant seismic attributes and seismic inversion results depict the sedimentary microfacies of the target layer in the study area. On the basis of the above research, combined with the oil test data, the reservoir in the study area is comprehensively analyzed and the favorable area is selected to deploy the well location. The fine structure interpretation and reservoir prediction of Heidimiao reservoir in the 9-Aonan work area have been studied as follows: NW and NW faults are developed in the work area. There are four types of traps: fault block, fault nose, fault anticline, structural anticline, in which fault block is the most developed, which is the main trap type in the working area, sand body of Hei-1 oil formation in this area is developed, and the result of attribute slice and inversion is analyzed. The sand body is characterized by the distribution of north and south, and the sand body is not developed relative to the formation of Hei 2 oil formation of the Hei-1 formation, and the sedimentary environment of each layer of the formation is delta front, river course is developed, and a large area of sheet sand is developed on both sides of the channel. The sedimentary environment of Heier oil formation is delta front forward delta transition, the main sedimentary microfacies type is estuarine dam and sheet sand distributed sporadically, the fault lithologic reservoir is mainly developed in this area. The favorable zone is mainly located in the Ao268-66 structure and the Pu381 structure in the HI3H _ 5H _ 5H _ 6 sublayer.
【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;P631.4

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