Genesis of Low-Resistivity Shale Reservoirs and Its Influence on Gas-Bearing Property: A Case Study of the Longmaxi Formation in Southern Sichuan Basin
Abstract
:1. Introduction
2. Geological Background and Experimental Methods
2.1. Geological Background
2.2. Experimental Methods
3. Boundary of Low-Resistivity Shale Reservoir
4. Characteristics of Low-Resistivity Shale Reservoirs
4.1. Macro Parameter Characteristics of Low-Resistivity Shale Reservoirs
4.2. Microscopic Pore Structure Characteristics of Low-Resistivity Shale Reservoirs
5. Genetic Mechanism of Low-Resistivity Shale Reservoir
5.1. Resistivity Response to Reservoir Macro Parameters
5.2. The Impact of Reservoir Microscopic Characteristics on Resistivity
5.3. A Preliminary Analysis of the Causes for High Water Content in Shale Reservoirs
6. The Impact of Low-Resistivity Shale Reservoir Characteristics on Gas-Bearing Properties
7. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Section | TOC (%) | Ro (%) | Quartz Content (%) | Clay Mineral Content (%) | Pyrite Content (%) | Porosity (%) | Water Saturation (%) | Gas Content (m3/t) | |
---|---|---|---|---|---|---|---|---|---|
Low Resistivity Reservoir | 1~3 sub layer | 4.14 | 3.21 | 56.32 | 30.24 | 4.85 | 4.04 | 66.49 | 2.93 |
4 sub layer | 2.23 | 3.10 | 45.88 | 40.15 | 1.61 | 4.85 | 52.38 | 2.08 | |
Normal-resistivity Reservoir | 1~3 sub layer | 4.23 | 3.17 | 59.57 | 19.68 | 2.64 | 4.90 | 22.78 | 6.12 |
4 sub layer | 2.20 | 3.15 | 44.90 | 34.01 | 2.10 | 4.93 | 43.25 | 3.62 |
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Hu, X.; Zhou, A.; Li, Y.; Jiang, H.; Fu, Y.; Jiang, Y.; Gu, Y. Genesis of Low-Resistivity Shale Reservoirs and Its Influence on Gas-Bearing Property: A Case Study of the Longmaxi Formation in Southern Sichuan Basin. Appl. Sci. 2024, 14, 7515. https://doi.org/10.3390/app14177515
Hu X, Zhou A, Li Y, Jiang H, Fu Y, Jiang Y, Gu Y. Genesis of Low-Resistivity Shale Reservoirs and Its Influence on Gas-Bearing Property: A Case Study of the Longmaxi Formation in Southern Sichuan Basin. Applied Sciences. 2024; 14(17):7515. https://doi.org/10.3390/app14177515
Chicago/Turabian StyleHu, Xi, Anfu Zhou, Yading Li, Hongzong Jiang, Yonghong Fu, Yuqiang Jiang, and Yifan Gu. 2024. "Genesis of Low-Resistivity Shale Reservoirs and Its Influence on Gas-Bearing Property: A Case Study of the Longmaxi Formation in Southern Sichuan Basin" Applied Sciences 14, no. 17: 7515. https://doi.org/10.3390/app14177515