Numerical Simulation Analysis of Difference from a Radial Resistivity Testing Method for Cylindrical Cores and a Conventional Testing Method
Rock resistivity is a major geophysical technical parameter in geological and geotechnical engineering, geothermal prospecting, and oil and gas exploration. Its accurate measurement is of great significance to achieve the goal of “carbon peak and carbon neutrality”. To solve anisotropic problems, a...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-08-01
|
| Series: | Mathematics |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2227-7390/10/16/2885 |
| _version_ | 1797431982467055616 |
|---|---|
| author | Jiahuan He Tangyan Liu Long Wen Tingting He Min Li Jin Li Li Wang Xin Yao |
| author_facet | Jiahuan He Tangyan Liu Long Wen Tingting He Min Li Jin Li Li Wang Xin Yao |
| author_sort | Jiahuan He |
| collection | DOAJ |
| description | Rock resistivity is a major geophysical technical parameter in geological and geotechnical engineering, geothermal prospecting, and oil and gas exploration. Its accurate measurement is of great significance to achieve the goal of “carbon peak and carbon neutrality”. To solve anisotropic problems, a method to test the radial resistivity in cylindrical core samples has been proposed and has been deemed the universal method, as it has the virtues of no specially processed sample being needed and nondestructive testing. However, there is still a difference in the radial resistivities obtained from this method and another testing method that is commonly used for cuboid samples. Furthermore, the differences between these methods have not yet been made clear in China or elsewhere. Therefore, we compared the results of the above-two testing methods via numerical simulations after establishing the potential field distribution, and, in combination with their methodological principles, illustrated the differences between the resistivities determined in samples with distinct shapes obtained using the two testing methods, summarized the conditions when there was zero difference and considerable difference when using the two methods, and provided a theoretical basis for the reasonable selection of an appropriate method to test the resistivity anisotropy. |
| first_indexed | 2024-03-09T09:53:12Z |
| format | Article |
| id | doaj.art-c29cd60ae0f749bab300539a1e80cefa |
| institution | Directory Open Access Journal |
| issn | 2227-7390 |
| language | English |
| last_indexed | 2024-03-09T09:53:12Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Mathematics |
| spelling | doaj.art-c29cd60ae0f749bab300539a1e80cefa2023-12-01T23:57:26ZengMDPI AGMathematics2227-73902022-08-011016288510.3390/math10162885Numerical Simulation Analysis of Difference from a Radial Resistivity Testing Method for Cylindrical Cores and a Conventional Testing MethodJiahuan He0Tangyan Liu1Long Wen2Tingting He3Min Li4Jin Li5Li Wang6Xin Yao7School of Ocean and Earth Science, Tongji University, Shanghai 200092, ChinaSchool of Ocean and Earth Science, Tongji University, Shanghai 200092, ChinaExploration and Development Research Institute, PetroChina Southwest Oil & Gasfield Company, Chengdu 610041, ChinaExploration and Development Research Institute, PetroChina Southwest Oil & Gasfield Company, Chengdu 610041, ChinaState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, ChinaExploration and Development Research Institute, PetroChina Southwest Oil & Gasfield Company, Chengdu 610041, ChinaExploration and Development Research Institute, PetroChina Southwest Oil & Gasfield Company, Chengdu 610041, ChinaExploration and Development Research Institute, PetroChina Southwest Oil & Gasfield Company, Chengdu 610041, ChinaRock resistivity is a major geophysical technical parameter in geological and geotechnical engineering, geothermal prospecting, and oil and gas exploration. Its accurate measurement is of great significance to achieve the goal of “carbon peak and carbon neutrality”. To solve anisotropic problems, a method to test the radial resistivity in cylindrical core samples has been proposed and has been deemed the universal method, as it has the virtues of no specially processed sample being needed and nondestructive testing. However, there is still a difference in the radial resistivities obtained from this method and another testing method that is commonly used for cuboid samples. Furthermore, the differences between these methods have not yet been made clear in China or elsewhere. Therefore, we compared the results of the above-two testing methods via numerical simulations after establishing the potential field distribution, and, in combination with their methodological principles, illustrated the differences between the resistivities determined in samples with distinct shapes obtained using the two testing methods, summarized the conditions when there was zero difference and considerable difference when using the two methods, and provided a theoretical basis for the reasonable selection of an appropriate method to test the resistivity anisotropy.https://www.mdpi.com/2227-7390/10/16/2885complex variable functionanisotropyrock resistivityradial resistivity |
| spellingShingle | Jiahuan He Tangyan Liu Long Wen Tingting He Min Li Jin Li Li Wang Xin Yao Numerical Simulation Analysis of Difference from a Radial Resistivity Testing Method for Cylindrical Cores and a Conventional Testing Method Mathematics complex variable function anisotropy rock resistivity radial resistivity |
| title | Numerical Simulation Analysis of Difference from a Radial Resistivity Testing Method for Cylindrical Cores and a Conventional Testing Method |
| title_full | Numerical Simulation Analysis of Difference from a Radial Resistivity Testing Method for Cylindrical Cores and a Conventional Testing Method |
| title_fullStr | Numerical Simulation Analysis of Difference from a Radial Resistivity Testing Method for Cylindrical Cores and a Conventional Testing Method |
| title_full_unstemmed | Numerical Simulation Analysis of Difference from a Radial Resistivity Testing Method for Cylindrical Cores and a Conventional Testing Method |
| title_short | Numerical Simulation Analysis of Difference from a Radial Resistivity Testing Method for Cylindrical Cores and a Conventional Testing Method |
| title_sort | numerical simulation analysis of difference from a radial resistivity testing method for cylindrical cores and a conventional testing method |
| topic | complex variable function anisotropy rock resistivity radial resistivity |
| url | https://www.mdpi.com/2227-7390/10/16/2885 |
| work_keys_str_mv | AT jiahuanhe numericalsimulationanalysisofdifferencefromaradialresistivitytestingmethodforcylindricalcoresandaconventionaltestingmethod AT tangyanliu numericalsimulationanalysisofdifferencefromaradialresistivitytestingmethodforcylindricalcoresandaconventionaltestingmethod AT longwen numericalsimulationanalysisofdifferencefromaradialresistivitytestingmethodforcylindricalcoresandaconventionaltestingmethod AT tingtinghe numericalsimulationanalysisofdifferencefromaradialresistivitytestingmethodforcylindricalcoresandaconventionaltestingmethod AT minli numericalsimulationanalysisofdifferencefromaradialresistivitytestingmethodforcylindricalcoresandaconventionaltestingmethod AT jinli numericalsimulationanalysisofdifferencefromaradialresistivitytestingmethodforcylindricalcoresandaconventionaltestingmethod AT liwang numericalsimulationanalysisofdifferencefromaradialresistivitytestingmethodforcylindricalcoresandaconventionaltestingmethod AT xinyao numericalsimulationanalysisofdifferencefromaradialresistivitytestingmethodforcylindricalcoresandaconventionaltestingmethod |