Design and Demonstration of Creating Underground Gas Storage in a Fractured Oil Depleted Carbonate Reservoir (Russian)

2006 ◽  
Author(s):  
Guo Xiao ◽  
Zhimin Du ◽  
Guo Ping ◽  
Yuhong Du ◽  
Fu Yu ◽  
...  
Keyword(s):  
Gas Storage ◽  
Carbonate Reservoir ◽  
Underground Gas Storage

Underground Gas Storage Process Optimization Using Integrated Subsurface Characterization, Dynamic Modeling and Monitoring - A Case Study

2021 ◽  
Author(s):  
Longxin Li ◽  
Yuan Zhou ◽  
Limin Li ◽  
John Tinnin* ◽  
Xian Peng ◽  
...  
Keyword(s):  
Supply And Demand ◽  
Initial Period ◽  
Gas Storage ◽  
Carbonate Reservoir ◽  
Initial Assessment ◽  
Surveillance Systems ◽  
Operating Pressure ◽  
Underground Gas Storage ◽  
Gas Field ◽  
Cap Rock

Abstract Underground gas storage (UGS) will be key to addressing supply and demand dynamics as natural gas consumption grows during the coming decades in response to cleaner energy initiatives. The XGS facility began UGS operations in a depleted gas field located in SW China in 2013. Following this initial period of utilization, the site was reassessed to safely increase deliverability during winter months to meet future peak gas demand. The XGS field is located in a high tectonic stress region and has a structurally complex and highly faulted geological setting. The carbonate reservoir is heterogeneous and naturally fractured. Initial assessment steps involved determination of maximum storage capacity and estimation of required working gas and cushion gas volumes using fully integrated geological, geophysical, petrophysical frameworks. Geomechanical modeling was embedded into the analysis to determine the long-term impact inferred by cyclical variations of pressures on the reservoir performance and cap rock containment and evaluate both safe operating pressure limits and monitoring requirements. The coupling of complex reservoir and geomechanical parameters was required to create a dynamic model within the stress regime that could be history-matched to the early gas depletion phase and subsequent gas storage cycles. Such a holistic approach allows the operator to optimize the number of wells, their placement, trajectories and completion designs to ensure safe and efficient operations and develop strategies for increasing withdrawal rates to meet anticipated future demand. Additionally, tight integration of subsurface understanding with surface requirements, such as turbo-compressors, is critical to meet the UGS designed performance and deliverability objectives and ensure sufficient flexibility to optimize the facility usage. A further important task of the final phase of UGS facilities design involves enablement of sustainable operation through a Storage Optimization Plan. The results of the analyses serve as a basis for the design of this plan, in combination with fit-for-purpose surveillance systems of the reservoir and cap-rock seal recording pressure, rock deformation and seismicity in real time, along with regular wellbore inspection.

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.

Isolation and investigation of anaerobic microorganisms involved in methanol transformation in an underground gas storage facility

Microbiology ◽  
2011 ◽  
Vol 80 (2) ◽  
pp. 172-179 ◽  
Author(s):  
A. L. Tarasov ◽  
I. A. Borzenkov ◽  
N. A. Chernykh ◽  
S. S. Belyayev
Keyword(s):  
Gas Storage ◽  
Storage Facility ◽  
Underground Gas Storage ◽  
Anaerobic Microorganisms
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