scholarly journals Conditioning an Underground Gas Storage Site to Well Pressures

2004 ◽  
Vol 59 (6) ◽  
pp. 611-624 ◽  
Author(s):  
M. Le Ravalec-Dupin ◽  
B. Coureaud ◽  
L. Nicolas ◽  
F. Roggero
Keyword(s):  
Gas Storage ◽  
Storage Site ◽  
Underground Gas Storage

Crustal Deformation in the Hutubi Underground Gas Storage Site in China Observed by GPS and InSAR Measurements

2018 ◽  
Vol 89 (4) ◽  
pp. 1467-1477 ◽  
Author(s):  
Qiao Xuejun ◽  
Chen Wei ◽  
Wang Dijin ◽  
Nie Zhaosheng ◽  
Chen Zhengsong ◽  
...  
Keyword(s):  
Crustal Deformation ◽  
Gas Storage ◽  
Storage Site ◽  
Underground Gas Storage

Variation of slip tendency of a seismogenic fault associated with fluid extraction and injection in the Hutubi underground gas storage, China

2020 ◽  
Author(s):  
Guiyun Gao ◽  
Chandong Chang ◽  
Chenghu Wang ◽  
Jin Jia
Keyword(s):  
Stress State ◽  
Pore Pressure ◽  
Gas Injection ◽  
Gas Storage ◽  
Storage Site ◽  
Seismogenic Fault ◽  
Underground Gas Storage ◽  
Simple Assumption ◽  
Slip Tendency ◽  
Reverse Faulting

<p>We conduct geomechanical study for a seismogenic fault in Hutubi underground gas storage site, northwestern China. The Hutubi reservoir has undergone active production from 1990s to 2012, leading to a complete depletion, and then sequential gas injection and extraction from 2013 for the gas storage project. First, we constrain the orientation and magnitudes of the stress state at the reservoir depths (~3.6 km depth) at the time of a complete depletion in 2012, using image-logged wellbore breakouts in a borehole. Then we estimate the variation of the stress state with time as a result of pore pressure change based on a simple assumption of coupling between horizontal stresses and pore pressure. Our results show that the stress state was initially in a reverse faulting regime before production and switched to a strike-slip faulting regime during production. Gas injection from 2013 turned the stress regime again in favor of reverse faulting. We use the estimated variation of the reservoir stress state with time to calculate temporal changes of slip tendency of the major earthquake fault (Hutubi fault) in the reservoir. Slip tendency of the fault decreased continuously with production, and then increased with injection. The first earthquake swarm associated with gas injection occurred ~2 months after the commencement of injection, possibly due to slow pore pressure diffusion. Thereafter, earthquakes were induced whenever gas was injected, while few earthquakes were detected during gas extraction phases. Our preliminary assessment of slip tendency suggests that earthquake swarms are induced during increasing phases of pore pressure when slip tendency reaches a value between 0.4 and 0.5, which can provide information on friction coefficient of the fault.</p><p>Funding information: This work is supported by the National Natural Science Foundation of China (41574088,41704096) </p>

History-matching with Ensemble-Based Methods: Application to an Underground Gas Storage Site

2012 ◽  
Author(s):  
Veronique Gervais-Couplet ◽  
Mickaele Le Ravalec-dupin ◽  
Leila Heidari ◽  
Thomas Schaaf
Keyword(s):  
History Matching ◽  
Gas Storage ◽  
Storage Site ◽  
Underground Gas Storage

Uncertainty failure risk quantitative assessments for underground gas storage near-wellbore area

2021 ◽  
Vol 36 ◽  
pp. 102393
Author(s):  
Shengyue Zhang ◽  
Yifei Yan ◽  
Zhonghui Sheng ◽  
Xiangzhen Yan
Keyword(s):  
Gas Storage ◽  
Underground Gas Storage ◽  
Failure Risk ◽  
Quantitative Assessments

scholarly journals Change of phase state during multi-cycle injection and production process of condensate gas reservoir based underground gas storage

2021 ◽  
Vol 48 (2) ◽  
pp. 395-406
Author(s):  
Yong TANG ◽  
Keji LONG ◽  
Jieming WANG ◽  
Hongcheng XU ◽  
Yong WANG ◽  
...  
Keyword(s):  
Production Process ◽  
Phase State ◽  
Gas Storage ◽  
Underground Gas Storage ◽  
Gas Reservoir

scholarly journals Research on Injection-Production Capability and Seepage Characteristics of Multi-Cycle Operation of Underground Gas Storage in Gas Field—Case Study of the Wen 23 Gas Storage

Energies ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3829
Author(s):  
Jie Zhang ◽  
Feifei Fang ◽  
Wei Lin ◽  
Shusheng Gao ◽  
Yalong Li ◽  
...  
Keyword(s):  
Transition Zone ◽  
Pore Volume ◽  
High Speed ◽  
Gas Storage ◽  
Production Flow ◽  
Underground Gas Storage ◽  
Gas Recovery ◽  
Gas Drive ◽  
Gas Fields ◽  
Water Gas

With the increasing energy demands of current modern society, underground gas storage (UGS) in gas fields is the most popular type of UGS used to meet the seasonal variation of gas consumption. However, compared with gas fields, UGS in gas fields has the characteristics of periodic high-speed injection and production of exploitation modes and operation rules, which causes the rules of gas-water seepage and utilization of reserves to be more particular and complicated. In this paper, based on Wen 23 gas storage, the rules of multicycle injection and production flow and the utilization of UGS pore volume were investigated. The experimental results showed that variation in porosity and permeability caused by injection and production pressure changes in Wen 23 gas storage can be neglected. The pore volume of gas storage and the degree of gas recovery increased gradually in the pre-UGS gas zone, which was higher than that of reservoirs. In the initial stage of UGS operation, the pore volume of gas storage and the degree of gas recovery were low in the gas-drive-water gas zone as a result of water invasion during the process of reservoir exploitation. During operation of multicycle high-speed injection and production, the seepage conditions in the gas-drive-water gas zone gradually improved. The higher the reservoir permeability, the greater increases in pore volume and degree of gas recovery. In the gas-water transition zone, gas and water were reciprocated and displaced with the multicycle injection-production of UGS, resulting in the gradual deterioration of pore volume and gas recovery, which remained stable at a low value. The negative effects of reservoir heterogeneity on the effective utilization of UGS occurred in the gas-water transition zone. These findings may contribute to a better understanding of the rules of multicycle injection and production flow and utilization of UGS to optimize the injection-production efficiency of Wen 23 gas storage.

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