Pore-scale analysis of electrical properties in thinly bedded rock using digital rock physics

被引：13
作者：
Sun, Jianmeng [1 ]
Zhao, Jianpeng [1 ]
Liu, Xuefeng [2 ]
Chen, Hui [3 ]
Jiang, LiMing [4 ]
Zhang, JinYan [5 ]
机构：
[1] China Univ Petr, Sch Geosci, Qingdao 266580, Peoples R China
[2] China Univ Petr, Coll Sci, Qingdao 266580, Peoples R China
[3] China Petr Logging CO LTD, Int Div, Beijing 102206, Peoples R China
[4] China Petr Logging CO LTD, Ctr Technol, Xian 710077, Shanxi, Peoples R China
[5] Shengli Corp Well Logging CO LTD, SINOPEC Oilfield Serv, Dongying 257096, Peoples R China
来源：
JOURNAL OF GEOPHYSICS AND ENGINEERING | 2014年 / 11卷 / 05期
关键词：
digital rock physics; laminated rock; finite element method; resistivity index; electrical anisotropy; POROUS-MEDIA; RESERVOIR ROCKS; RESISTIVITY; WETTABILITY; SIMULATION; TRANSPORT; NETWORK; CORES;
D O I：
10.1088/1742-2132/11/5/055008
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
We investigated the electrical properties of laminated rock consist of macro-porous layers and micro-porous layers based on digital rock technology. Due to the bedding effect and anisotropy, traditional Archie equations cannot well describe the electrical behavior of laminated rock. The RI-Sw curve of laminated rock shows a nonlinear relationship. The RI-Sw curve can be divided into two linear segments with different saturation exponent. Laminated sand-shale sequences and laminated sands of different porosity or grain size will yield macroscopic electrical anisotropy. Numerical simulation and theoretical analysis lead to the conclusion that electrical anisotropy coefficient of laminated rock is a strong function of water saturation. The function curve can be divided into three segments by the turning point. Therefore, the electrical behavior of laminated rock should be considered in oil exploration and development.
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页数：7
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