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An innovative experimental equipment for liquid nitrogen fracturing
Pengpeng Huang1, Zhongwei Huang1, Zheqi Yang1
1State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum-Beijing, Beijing 102249, China.
The Review of Scientific Instruments
|April 1, 2019
Summary
Liquid nitrogen (LN2) fracturing shows promise for reservoir stimulation. New equipment successfully tested LN2 fracturing effects under varied conditions, proving its excellent fracturing capabilities.
Area of Science:
- Petroleum Engineering
- Geoscience
- Materials Science
Background:
- Reservoir stimulation is crucial for enhancing hydrocarbon recovery.
- Liquid nitrogen (LN2) possesses unique physical and chemical properties beneficial for fracturing.
- Existing methods may have limitations in certain reservoir conditions.
Purpose of the Study:
- To investigate the feasibility and effectiveness of liquid nitrogen fracturing.
- To design and validate a novel experimental apparatus for LN2 fracturing research.
- To analyze the impact of varying conditions on LN2 fracturing performance.
Main Methods:
- Development of a specialized experimental setup including LN2 generation, true-triaxial loading, and heating systems.
- Conducting experiments on rock specimens under controlled conditions (size, temperature, confining pressure).
- Utilizing a control and data acquisition system for precise monitoring.
Main Results:
- Demonstrated the excellent fracturing effect of liquid nitrogen.
- Validated the performance and applicability of the developed experimental apparatus.
- Gathered data on LN2 fracturing under diverse specimen sizes, temperatures, and confining pressures.
Conclusions:
- Liquid nitrogen fracturing is a viable and effective reservoir stimulation technique.
- The developed apparatus provides a foundational tool for further research and application of LN2 fracturing.
- This technique holds potential for both conventional and geothermal reservoirs.
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