Formation resistivity response to loading and unloading confining pressure

被引：0
|
作者：
Petroleum + Gas Technology Div, Univ of Petroleum + Minerals, Dhahran 31261, Saudi Arabia [1 ]
机构：
来源：
J Pet Sci Eng | / 1-3卷 / 169-179期
关键词：
Brines - Core samples - Dynamic loads - Electric conductivity measurement - Oil well cementing - Pressure effects - Research laboratories - Sandstone - Saturation (materials composition);
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The effect of confining pressure was investigated by measuring resistivities of five fully brine-saturated sandstone samples, while the confining pressure was increased from 250 to 2300 psi in a stepwise manner (loading) and than decreased to 500 psi (unloading). The formation resistivity factor increased as confining pressure increased and decreased as confining pressure decreased, but it did not return to its initial value. In all cases the value of the formation factor at the end of the unloading cycle was higher. This is evidence of hysteresis in formation factor in the loading and unloading cycles.
引用
收藏
相关论文
共 50 条
  • [31] Energy Evolution and Brittleness Analysis of Sandstone Under Confining Pressure Unloading
    Li, Yinda
    Han, Liu
    Shang, Tao
    ROCK MECHANICS AND ROCK ENGINEERING, 2024, 57 (07) : 4729 - 4754
  • [32] Gas permeability evolution of granite under confining pressure unloading tests
    Hu, Dawei
    Li, Jun
    Zhou, Hui
    Lu, Jingjing
    Ma, Dongdong
    Zhang, Fan
    EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING, 2021, 25 (10) : 1915 - 1928
  • [33] Coal Damage and Permeability Characteristics Under Accelerated Unloading Confining Pressure
    Kai Wang
    Xiang Zhang
    Feng Du
    Chengpeng Xin
    Liang Wang
    Geotechnical and Geological Engineering, 2020, 38 : 561 - 572
  • [34] Mesoscopic fracturing mechanism in sandstone: Influence of confining pressure unloading rate
    Zhang, Jian
    Guo, Liangliang
    Zhao, Dekang
    Tu, Kun
    Mu, Wenping
    ENERGY EXPLORATION & EXPLOITATION, 2025,
  • [35] Coal Damage and Permeability Characteristics Under Accelerated Unloading Confining Pressure
    Wang, Kai
    Zhang, Xiang
    Du, Feng
    Xin, Chengpeng
    Wang, Liang
    GEOTECHNICAL AND GEOLOGICAL ENGINEERING, 2020, 38 (01) : 561 - 572
  • [36] Experimental research on strength characteristic of brittle rock unloading confining pressure
    Liu Dou-dou
    Chen Wei-zhong
    Yang Jian-ping
    Tan Xian-jun
    Zhou Xi-de
    ROCK AND SOIL MECHANICS, 2009, 30 (09) : 2588 - 2594
  • [37] Brittleness indices for chemically corroded rocks under unloading confining pressure
    Li, Hao
    Pel, Leo
    You, Zhenjiang
    Smeulders, David
    INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2025, 288
  • [38] Quantitative modeling of rock electrical resistivity under uniaxial loading and unloading
    Chuanqi Qu
    Yiguo Xue
    Maoxin Su
    Daohong Qiu
    Xiaoyin Ma
    Qiushi Liu
    Guangkun Li
    Acta Geophysica, 2024, 72 : 195 - 212
  • [39] Quantitative modeling of rock electrical resistivity under uniaxial loading and unloading
    Qu, Chuanqi
    Xue, Yiguo
    Su, Maoxin
    Qiu, Daohong
    Ma, Xiaoyin
    Liu, Qiushi
    Li, Guangkun
    ACTA GEOPHYSICA, 2024, 72 (01) : 195 - 212
  • [40] Loading device of explosive stress wave in high confining pressure and dynamic response of composite structure
    Liu, Chenkang
    Yue, Songlin
    Wang, Mingyang
    Li, Jie
    Deng, Shuxin
    Zhang, Guokai
    Ji, Yuguo
    Li, Zhihao
    Xu, Tianhan
    COMPOSITE STRUCTURES, 2021, 258
12345