Author
Listed:
- Yuanjian Zhou
(Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China)
- Cong Li
(PetroChina Jidong Oilfield Company, Tangshan 063200, China)
- Hao Zhang
(Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China)
- Guangliang Gao
(PetroChina Jidong Oilfield Company, Tangshan 063200, China)
- Dongsheng Sun
(Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China)
- Bangchen Wu
(Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China)
- Chaofeng Li
(PetroChina Jidong Oilfield Company, Tangshan 063200, China)
- Nan Li
(PetroChina Jidong Oilfield Company, Tangshan 063200, China)
- Yu Yang
(PetroChina Jidong Oilfield Company, Tangshan 063200, China)
- Lei Li
(School of Geosciences and Info-Physics, Central South University, Changsha 410083, China)
AbstractThe Jidong Oilfield No. 2 Underground Gas Storage (UGS), located in an active fault zone in Northern China, is a key facility for ensuring natural gas supply and peak regulation in the Beijing–Tianjin–Hebei region. To evaluate the effectiveness of a combined surface and shallow borehole monitoring system under deep reservoir conditions, a 90-day microseismic monitoring trial was conducted over a full injection cycle using 16 surface stations and 1 shallow borehole station. A total of 35 low-magnitude microseismic events were identified and located using beamforming techniques. Results show that event frequency correlates positively with wellhead pressure variations instead of the injection volume, suggesting that stress perturbations predominantly control microseismic triggering. Events were mainly concentrated near the bottom of injection wells, with an average location error of approximately 87.5 m and generally shallow focal depths, revealing limitations in vertical resolution. To enhance long-term monitoring performance, this study recommends deploying geophones closer to the reservoir, constructing a 3D velocity model, applying AI-based phase picking, expanding array coverage, and developing a microseismic-injection coupling early warning system. These findings provide technical guidance for the design and deployment of long-term monitoring systems for deep reservoir conversions into UGS facilities.
Suggested Citation
Yuanjian Zhou & Cong Li & Hao Zhang & Guangliang Gao & Dongsheng Sun & Bangchen Wu & Chaofeng Li & Nan Li & Yu Yang & Lei Li, 2025.
"Experimental Study on Microseismic Monitoring of Depleted Reservoir-Type Underground Gas Storage Facility in the Jidong Oilfield, North China,"
Energies, MDPI, vol. 18(14), pages 1-17, July.
Handle:
RePEc:gam:jeners:v:18:y:2025:i:14:p:3762-:d:1702644
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