Reservoir Characteristics And Preliminary Study Of Remaining Oil Of Yan’an 9th Layer In Liang Zhen Ordos Basin

The thesis select Yan9 layer of Yan’an group in Liang Zhen Jingbian area in the central of Shanbei slope of the Erdos Basin as the research object to infer the reservoiring characteristics through the data collection and dynamic data analysis in this area.Studying LiangZhen Yan’an group extension of 9 layer oil and gas tendency of stratigraphic division and small layer contrast after the site well measurement and the collection and study of well logging data to characteristics the reservoir structure and reservoir connectivity there. Analysis the test data points and the area of Yan 9 reservoir on the extension of Yan9 layer cores’ physical of the adjacent blocks. Researching the reservoir characteristics of Yan9 layer and combined the macro remaining oil tendency with dynamic data to put forward specific measures of the development of modifiy.Main results are as follows:1 The structure of LiangZhen research area is mainly small nose like structure with small dome structure, and there is no evident developed fault zone inside of the working area.2 Yan9 layer of LiangZhen oil area can be divided into three parts, which are Yan91、 Yan92 and Yan93, and each of them has different thickness of the strata. First of all, the thickness of Yan91layer mostly distributed from 5m to 20m. Secondly,Yan92 layer’s thickness is mainly in the range of 10m-30m. At last, Yan93 layer’s thickness is mainly between 20m and 40m. But after analyzing reservoir profile.3 Yan 91 and Yan 92 reservoir is the main reservoir in the town of beam, the extension of 93 layers of sand is well, but the reservoir is relatively developed,connectivity is relatively poor.4 In the area of Yan 9 reservoir only of 20%wells had suffer water injection,not with water injection wells accounted for about 80%,Yan91 and 92 layer is the largest remaining oil bearing strata.In view of this situation, put forward to the water/oil based development adjustment suggestion.