江桥地区江75区块储层特征及地质建模
发布时间：2018-10-09 08:55
【摘要】：江75区块构造位置处于西部斜坡的江桥—泰来鼻状构造带,区内断裂较发育。主要含油层位为高一组油层和萨二、三油层。以研究区高一组油层和萨尔图油层为研究对象,应用现有的探井、评价井及开发井资料,开展了地层旋回对比、储层沉积微相识别,应用分析化验资料总结储层特征和非均质性。在此基础上,结合三维地震解释及反演成果,建立了地质模型,并提出了有利布井区。江75区块高一组及萨尔图油层,在斜坡背景下整体呈现西高东低的趋势。应用旋回对比方法,将高一组划分为3个小层,将萨尔图油层3个砂层组细分为11个小层,建立了江75区块高一组和萨尔图层地层格架。根据地质、录井及测井资料,研究区高一组及萨尔图层主要发育三角洲前缘、滨浅湖亚相沉积。储层沉积微相类型主要是三角洲前缘中的水下分流河道、河口坝、远砂坝和滨浅湖亚相中的砂坝沉积。高一组油层砂体厚度大,主要以水层为主,含油层位仅分布于江37井区的GI1小层。主力含油层位为萨二、三组上部,含油砂体类型为水下分流河道和河口坝。根据实验数据结果,萨尔图层孔、渗条件较好,非均质性强。在地层对比及识别沉积微相基础上,结合地震资料,应用地质建模软件,建立了高一组和萨尔图层的构造模型、岩相模型和油藏属性模型。根据上述研究成果,提出江77井区萨二、三组油层为有利布井区。研究结果完善了江75区块储层特征,掌握砂体分布规律,为现有开发区块外扩打下坚实地质基础。
[Abstract]:Jiang75 block is located on the western slope of Jiangqiao-Tailai nasal structural belt, and the faults in the area are relatively developed. The main oil-bearing layers are Gao 1 formation and sa 2 and 3 oil layers. Based on the existing data of exploration wells, evaluation wells and development wells, the formation cycle correlation and reservoir sedimentary microfacies identification are carried out by taking the high group of oil layers and Saltu oil layers in the study area as the research objects, and using the existing data of exploration wells, evaluation wells and development wells. The reservoir characteristics and heterogeneity are summarized by using analytical laboratory data. On this basis, combined with 3D seismic interpretation and inversion results, a geological model is established, and a favorable well layout area is proposed. The Gaoyi formation of Jiang75 block and the Saltu reservoir show a trend of west high and east low under the background of slope. By using cyclic correlation method, Gao Yi group is divided into 3 sub-layers, and 3 sand layers in Saltu oil reservoir are subdivided into 11 sublayers, and a stratigraphic framework of high first group and Saltu layer in Jiang75 block is established. According to the geological, logging and logging data, the delta front and shoreline subfacies are mainly developed in the high group and Saltu layer in the study area. The reservoir sedimentary microfacies are mainly subaqueous distributary channel in delta front, estuarine dam, far sand dam and sand bar deposit in shoreside shallow lacustrine subfacies. The sand body of the first group of oil reservoirs is thicker, mainly water layer, and the oil-bearing layer is only distributed in the GI1 sublayer of Jiang37 well area. The main oil-bearing horizon is the upper part of the second and third groups, and the oil-bearing sand bodies are subaqueous distributary channel and estuarine dam. According to the experimental data, Saltu layer pore, infiltration conditions are better, heterogeneity is strong. On the basis of stratigraphic correlation and identification of sedimentary microfacies, combined with seismic data and using geological modeling software, the structural model, lithofacies model and reservoir attribute model of Gaoyi and Saltu layers are established. According to the above research results, it is suggested that the second and third groups of oil layers in Jiang77 well area are favorable well distribution areas. The results improve the reservoir characteristics of block Jiang75, master the rule of sand body distribution, and lay a solid geological foundation for the external expansion of the existing development blocks.
【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
本文编号：2258746
[Abstract]:Jiang75 block is located on the western slope of Jiangqiao-Tailai nasal structural belt, and the faults in the area are relatively developed. The main oil-bearing layers are Gao 1 formation and sa 2 and 3 oil layers. Based on the existing data of exploration wells, evaluation wells and development wells, the formation cycle correlation and reservoir sedimentary microfacies identification are carried out by taking the high group of oil layers and Saltu oil layers in the study area as the research objects, and using the existing data of exploration wells, evaluation wells and development wells. The reservoir characteristics and heterogeneity are summarized by using analytical laboratory data. On this basis, combined with 3D seismic interpretation and inversion results, a geological model is established, and a favorable well layout area is proposed. The Gaoyi formation of Jiang75 block and the Saltu reservoir show a trend of west high and east low under the background of slope. By using cyclic correlation method, Gao Yi group is divided into 3 sub-layers, and 3 sand layers in Saltu oil reservoir are subdivided into 11 sublayers, and a stratigraphic framework of high first group and Saltu layer in Jiang75 block is established. According to the geological, logging and logging data, the delta front and shoreline subfacies are mainly developed in the high group and Saltu layer in the study area. The reservoir sedimentary microfacies are mainly subaqueous distributary channel in delta front, estuarine dam, far sand dam and sand bar deposit in shoreside shallow lacustrine subfacies. The sand body of the first group of oil reservoirs is thicker, mainly water layer, and the oil-bearing layer is only distributed in the GI1 sublayer of Jiang37 well area. The main oil-bearing horizon is the upper part of the second and third groups, and the oil-bearing sand bodies are subaqueous distributary channel and estuarine dam. According to the experimental data, Saltu layer pore, infiltration conditions are better, heterogeneity is strong. On the basis of stratigraphic correlation and identification of sedimentary microfacies, combined with seismic data and using geological modeling software, the structural model, lithofacies model and reservoir attribute model of Gaoyi and Saltu layers are established. According to the above research results, it is suggested that the second and third groups of oil layers in Jiang77 well area are favorable well distribution areas. The results improve the reservoir characteristics of block Jiang75, master the rule of sand body distribution, and lay a solid geological foundation for the external expansion of the existing development blocks.
【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
【参考文献】
相关期刊论文 前1条
1 骆杨;赵彦超;;多点地质统计学在河流相储层建模中的应用[J];地质科技情报;2008年03期
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