雷家地区致密油综合研究与勘探目标优选

发布时间：2018-07-15 12:55

【摘要】：致密油是指夹在或紧邻优质生油层系的致密碎屑岩或碳酸盐岩储层中,未经过大规模长距离运移而形成的石油聚集,一般无自然产能,需通过大规模压裂技术才能形成工业产能。致密油的物性界限确定为地面空气渗透率小于1mD、地下覆压渗透率小于0.1mD左右。辽河雷家地区自70年代投入勘探以来。区带内已有多口探井获工业油气流。自高34井获工业油气流以来,但该区研究工作一直处于一般性的生产管理。随着勘探程度的逐渐提高及开发手段的不断完善,08年至今该区先后部署了探井十余口,已完钻的高古2、高古14、高古15、雷77、雷84、雷86、雷88井在沙四段均见良好油气显示。但随着勘探开发的持续,该区上报的探明储量中只有极少的一部分投入开发,多数井表现为初期产量高,产量递减快,不做工程改造不出油的特征。随着致密油在国内外研究的深入。2011年辽河油田公司决定成立辽河雷家沙四段致密油气攻关小组,有多家单位联合攻关,对雷家沙四段致密油进行合理有效的勘探开发研究。该小组从成立以来利用,致密油“七性”研究理论对雷家致密油开展了深入的研究,对岩性进行了分析,杜家台油层主要岩性有五种。高升油层岩性与杜家台油层类似,主要也为泥质白云岩和白云质泥岩为主,部分区域发育粒屑云岩。其孔隙度渗透率多小于1,预测其分布范围叠合面积约300km2。对含油气性、物性、烃源岩特性、地应力等特性也进行了分析。
[Abstract]:Dense oil refers to the accumulation of petroleum which is not formed by large-scale long distance migration in tight clastic rock or carbonate reservoir of high quality oil source system, and generally has no natural productivity. Large-scale fracturing technology is needed to form industrial production capacity. The physical properties of the dense oil are determined to be that the surface air permeability is less than 1mD and the underground overpressure permeability is less than 0.1mD. Liaohe Lejia area has been explored since 1970's. The zone has a number of exploration wells industrial oil flow. Since the industrial oil flow was obtained in well Gao 34, the research work in this area has been in general production management. With the gradual improvement of exploration degree and the continuous improvement of development means, more than ten exploration wells have been deployed in this area since 2008. The well Gaogu 2, Gaogu 14, Gaogu 15, Lei 77, Lei 84, Lei 86 and Lei 88 have all been well oil and gas displayed in the fourth member of Shahejie formation. However, with the development of exploration and development, only a small part of the proven reserves reported in this area is put into development. Most wells are characterized by high initial production, rapid decline of production, and no oil production without engineering transformation. With the development of dense oil research at home and abroad, in 2011 Liaohe Oilfield Company decided to set up a tight oil and gas research group in the fourth member of Leijiasha formation of Liaohe River, with several units working together to carry out reasonable and effective exploration and development of compact oil in the fourth member of Leijiasha formation. Since the establishment of the group, the theory of "seven properties" of dense oil has been used in the study of Lei Jia dense oil, and the lithology has been analyzed. There are five main types of lithology in Dujiatai reservoir. The lithology of the Gaosheng reservoir is similar to that of the Dujiatai reservoir, which is mainly composed of muddy dolomite and dolomitic mudstone, and granulite dolomite is developed in some regions. Its porosity and permeability are less than 1, and its distribution range is predicted to be about 300km2. The characteristics of oil-bearing gas, physical property, source rock and in-situ stress are also analyzed.
【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】：TE34

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