• 责任者：Yang Qinghong (Tianjin Branch ; China National Offshore Oil Corporation Limited ; Tianjin 300452 ; China) ; Zhang Yingchun
• 刊名：Petroleum Geology & Oilfield Development in Daqing
• 出版年：2013
• 卷期：32(1)
• 关键词：古潜山 ; buried hill ; 裂缝性油气藏 ; fractured reservoir ; 渤海湾盆地 ; Bohaiwan Basin
• 页码：p.33-39
• 图表：illus., 1 table, 19 refs.
• 分类号：1003
• issnNo：ISSN1000-3754
• isbnNo：CN23-1286/TQ

Taking JZ25-1S Archaean metamorphic-rock buried hill as the object of studies and comprehensively integrating the data of cores, well logging, mud logging, production test and so on, the in-depth studies of the ancient weathered crust structure have been conducted. By means of the analysis of the geological background, core observation, logging analysis and the researches on the geochemical characteristics of the elements in the typical wells, the ancient weathered crust is found complete miss of weathered clay rocks, the semi-weathered crust, name- ly semi-weathered rocks are only developed, and moreover the semi-weathered crust can be divided into two parts： upper one and lower on ; the reservoir physical properties of the crust are mainly controlled by the structure of semi- weathered crust. The upper and the lower are impacted by different factors in the reservoir development, thus the reservoir physical properties are also different; the differences stated above in ductivity differential in the production test. The absolute tested oil productions the two parts in turn lead to the pro- of the upper semi-weathered crust in each well are influenced by the reservoir permeabilities and there are huge contrast among them： 0 -110 m3/d, and the average yield is 34 m3/d; those in the lower part are just on the contrary： the productions are generally higher than 300 m3/d.