大庆长垣南部黑帝庙油层沉积微相展布研究
发布时间：2019-03-20 08:50
【摘要】：本论文研究区位于大庆长垣南部,目的层为黑帝庙油层,前人对萨葡高油层研究较多,而对黑帝庙油层相对较少,气源不清、输导通道不明确及保存条件不清楚等对于确定下一步钻探方向非常不利。黑帝庙油层浅层气成藏规律认识不清,因此急需开展研究区内黑帝庙油层浅层气成藏规律研究。本文以岩心、测井、地震等资料为基础,应用高分辨率层序地层学等理论,对大庆长垣黑帝庙油层沉积微相展布及有利储层预测进行研究,研究表明:黑地庙油层为北部物源西南水系分支,属于典型的河控缓坡三角洲沉积体系,HI1小层在研究区北部缺失是由于受后期构造抬升剥蚀造成的;研究区为三角洲前缘亚相沉积体系,此区域发育的微相类型主要以水下分流河道、河口坝、远砂坝等微相为主,沉积微相垂向演化具有过渡性,从前三角洲亚相过度到三角洲前缘亚相外前缘区再过渡到三角洲前缘亚相内外前缘过渡区—三角洲前缘亚相内前缘区,反映了垂向上湖盆逐渐萎缩的过程;黑帝庙油层砂体分布总体呈南北向,具有北厚南薄的趋势,东西两侧砂体较薄。孔渗值分布也呈北大南小的趋势,总体与砂体厚度分布规律大致相同。储层的分布及其物性质量主要沉积相控制,其次是成岩作用的影响;大庆长垣南部黑帝庙油层HⅠ油组的有利目标为葡西-2、葡西-3和新肇-3三个圈闭,HⅡ油组的有利目标为葡西-2、葡西-3和新肇-2三个圈闭。
[Abstract]:The study area of this paper is located in the south of Daqing Placanticline, the target layer is Hetimiao oil layer, the predecessors have more research on Sapo high oil layer, but the Heitimiao reservoir is relatively few, and the gas source is unclear. It is very disadvantageous to determine the direction of drilling in the next step, such as the unclear transportation channel and the unclear preservation conditions. The law of shallow gas accumulation in Heidimiao reservoir is not clear, so it is urgent to study the law of shallow gas accumulation in Heidimiao reservoir in the study area. Based on core, well logging and seismic data, this paper applies the theory of high resolution sequence stratigraphy to study the distribution of sedimentary microfacies and the prediction of favorable reservoirs in Hetimiao reservoir, Daqing Placanticline. The results show that the Heidimiao reservoir is a branch of the southwestern water system of the northern provenance and belongs to the typical river-controlled gentle slope delta sedimentary system. The absence of the HI1 sublayer in the northern part of the study area is due to the structural uplift and denudation in the late stage. The study area is a delta front subfacies sedimentary system, the microfacies types developed in this area are mainly underwater distributary channel, estuarine dam, far sand dam and other microfacies, and the vertical evolution of sedimentary microfacies is transitional. The transition from the former delta subfacies to the delta front subfacies outer front area and then to the delta front subfacies inner front region reflects the process of vertical upper lake basin gradually shrinking. The distribution of sand body in Heidimiao reservoir is generally in the direction of south-north, with the trend of thick north-south and thin sand body on both sides of east and west. The distribution of pore permeability also shows a trend of smaller than that of the north and south, and the distribution law of the thickness of the sand body is approximately the same as that of the whole. The distribution of reservoir and its physical quality are mainly controlled by sedimentary facies, followed by the influence of diagenesis. The favorable targets of H 鈪，
本文编号：2444050
[Abstract]:The study area of this paper is located in the south of Daqing Placanticline, the target layer is Hetimiao oil layer, the predecessors have more research on Sapo high oil layer, but the Heitimiao reservoir is relatively few, and the gas source is unclear. It is very disadvantageous to determine the direction of drilling in the next step, such as the unclear transportation channel and the unclear preservation conditions. The law of shallow gas accumulation in Heidimiao reservoir is not clear, so it is urgent to study the law of shallow gas accumulation in Heidimiao reservoir in the study area. Based on core, well logging and seismic data, this paper applies the theory of high resolution sequence stratigraphy to study the distribution of sedimentary microfacies and the prediction of favorable reservoirs in Hetimiao reservoir, Daqing Placanticline. The results show that the Heidimiao reservoir is a branch of the southwestern water system of the northern provenance and belongs to the typical river-controlled gentle slope delta sedimentary system. The absence of the HI1 sublayer in the northern part of the study area is due to the structural uplift and denudation in the late stage. The study area is a delta front subfacies sedimentary system, the microfacies types developed in this area are mainly underwater distributary channel, estuarine dam, far sand dam and other microfacies, and the vertical evolution of sedimentary microfacies is transitional. The transition from the former delta subfacies to the delta front subfacies outer front area and then to the delta front subfacies inner front region reflects the process of vertical upper lake basin gradually shrinking. The distribution of sand body in Heidimiao reservoir is generally in the direction of south-north, with the trend of thick north-south and thin sand body on both sides of east and west. The distribution of pore permeability also shows a trend of smaller than that of the north and south, and the distribution law of the thickness of the sand body is approximately the same as that of the whole. The distribution of reservoir and its physical quality are mainly controlled by sedimentary facies, followed by the influence of diagenesis. The favorable targets of H 鈪，
本文编号：2444050
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