Automatic discrimination of sedimentary facies and lithologies in reef-bank reservoirs using borehole image logs

作     者：柴华 李宁 肖承文 刘兴礼 李多丽 王才志 吴大成 Chai Hua;Li Ning;Xiao Chengwen;Liu Xingli;Li Duoli;Wang Caizhi;Wu Dacheng

作者机构：北京大学地球与空间科学学院北京100871 中国石油勘探开发研究院北京100083 长江大学湖北荆州434023 中国石油塔里木油田分公司勘探开发研究院库尔勒841000 

出 版 物：《Applied Geophysics》 (应用地球物理（英文版）)

年 卷 期：2009年第6卷第1期

页      面：17-29,102页

核心收录：

学科分类：081801[工学-矿产普查与勘探] 081802[工学-地球探测与信息技术] 0707[理学-海洋科学] 08[工学] 0708[理学-地球物理学] 0818[工学-地质资源与地质工程] 0825[工学-航空宇航科学与技术] 0704[理学-天文学] 

基　　金：sponsored by the National S&T Major Special Project(No.2008ZX05020-01) 

主　　题：Reef-bank reservoirs sedimentary facies lithology borehole image logs pattern recognition 

摘      要：Reef-bank reservoirs are an important target for petroleum exploration in marine carbonates and also an essential supplemental area for oil and gas production in China. Due to the diversity of reservoirs and the extreme heterogeneity of reef-banks, it is very difficult to discriminate the sedimentary facies and lithologies in reef-bank reservoirs using conventional well logs. The borehole image log provides clear identification of sedimentary structures and textures and is an ideal tool for discriminating sedimentary facies and lithologies. After examining a large number of borehole images and cores, we propose nine typical patterns for borehole image interpretation and a method that uses these patterns to discriminate sedimentary facies and lithologies in reeI^bank reservoirs automatically. We also develop software with user-friendly interface. The results of applications in reef-bank reservoirs in the middle Tarim Basin and northeast Sichuan have proved that the proposed method and the corresponding software are quite effective.