Study on the Mechanism of Gas Intrusion and Its Transportation in a Wellbore under Shut-in Conditions
Abstract
:1. Introduction
2. Visualization of Gas Intrusion
2.1. Experimental System
2.2. Experimental Materials
2.3. Experimental Procedure
- (1)
- Simulation of gas intrusion into the wellbore under shut-in conditions
- (2)
- Obtaining intrusive-gas transportation velocity within the wellbore under shut-in conditions
3. Results and Analysis
3.1. Simulation of Gas Intrusion into the Wellbore under Shutdown Conditions
3.1.1. Variations in the Size of the Intrusion Bubbles
3.1.2. Modeling Gas Intrusion Rate under Shut-in Well Conditions
3.2. Simulation of Intrusive-Gas Transportation Velocity in Wellbore under Shut-in Conditions
3.2.1. Single-Bubble Transport Experiment
3.2.2. Experiments on the Transport of Bubble Populations
4. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
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Type | Consistency Factor K (Pa·s−n) | Fluidity Index n | Density (kg·m−3) | Surface Tension (N·m−1) |
---|---|---|---|---|
Water | 0.01 | 1 | 1000 | 72.35 |
0.05% XC | 0.07224 | 0.51458 | 1000 | 73.67 |
0.1% XC | 0.12377 | 0.48544 | 1000 | 74.24 |
0.2% XC | 0.34337 | 0.43297 | 1000 | 75.05 |
0.4% XC | 1.28381 | 0.34793 | 1000 | 76.75 |
Type | Range of Bubble Equivalent Radius (mm) | Bubble Velocity Range (mm/s) | ||
---|---|---|---|---|
Single Bubble | Bubble Group | Single Bubble | Bubble Group | |
Water | 0.5–8 | 0.32–1.6 | 170–267 | 110–330 |
0.05% XC | 2.7–6.9 | 0.56–1.29 | 213–303 | 100–360 |
0.1% XC | 2–9.8 | 0.74–1.43 | 116–259 | 77.9–321 |
0.2% XC | 1.9–9.4 | 0.89–1.81 | 95–231 | 106–428 |
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Zhu, H.; Xiang, M.; Lin, Z.; Yang, J.; Wang, X.; Liu, X.; Wang, Z. Study on the Mechanism of Gas Intrusion and Its Transportation in a Wellbore under Shut-in Conditions. Energies 2024, 17, 242. https://doi.org/10.3390/en17010242
Zhu H, Xiang M, Lin Z, Yang J, Wang X, Liu X, Wang Z. Study on the Mechanism of Gas Intrusion and Its Transportation in a Wellbore under Shut-in Conditions. Energies. 2024; 17(1):242. https://doi.org/10.3390/en17010242
Chicago/Turabian StyleZhu, Haifeng, Ming Xiang, Zhiqiang Lin, Jicheng Yang, Xuerui Wang, Xueqi Liu, and Zhiyuan Wang. 2024. "Study on the Mechanism of Gas Intrusion and Its Transportation in a Wellbore under Shut-in Conditions" Energies 17, no. 1: 242. https://doi.org/10.3390/en17010242
APA StyleZhu, H., Xiang, M., Lin, Z., Yang, J., Wang, X., Liu, X., & Wang, Z. (2024). Study on the Mechanism of Gas Intrusion and Its Transportation in a Wellbore under Shut-in Conditions. Energies, 17(1), 242. https://doi.org/10.3390/en17010242