• 责任者：He Bin (International Petroleum Exploration and Production Corporation ; SINOPEC ; Beijing 100083 ; China) ; Tan Xuequn
• 刊名：Petroleum Geology & Oilfield Development in Daqing
• 出版年：2013
• 卷期：32(6)
• 关键词：砂体 ; sand bodies ; 孔隙度 ; porosity ; 声波时差 ; interval transit time ; 鄂尔多斯盆地 ; Ordos Basin
• 页码：p.146-150
• 图表：3 illus., 1 table, 19 refs.
• 分类号：1600
• issnNo：ISSN1000-3754
• isbnNo：CN23-1286/TQ

     Through the linear correlativity test between the rock density and porosity, the effective way is sought to calculate the sandstone porosities and classify their types for Formation Yanehang in Triassic system of Fuxian area in Ordos Basin. The statistics and contrast among the different kinds of well logging data show that the interval tran- sit time, density logging and neutron porosity logging all relate with the rock density; when porosity exceeds 10%, there is linear coherency with steep angle between the interval transit time and porosity; while when the porosity is less than 5%, the exponential correlation is shown. The establishment of the above correlativity makes the identifi- cation of the effective reservoirs by loggings more simple and direct and furthermore the relation model built on the basis of the multiple well statistics and analyses becomes more true and effective.