Underground Gas Storage With CO2 Sequestration in a Depleted Gas Field

2016 ◽  
Author(s):  
Juhyeon Kim ◽  
Sunlee Han ◽  
Gilyong Sung ◽  
Youngsoo Lee
Keyword(s):  
Critical Factor ◽  
Cost Effective ◽  
Gas Storage ◽  
Injection Rate ◽  
Optimal Number ◽  
Transport Infrastructure ◽  
Co2 Production ◽  
Underground Gas Storage ◽  
Gas Field ◽  
Economic Point

In this study, simulation research was performed in order to switch producing gas field over to UGS (Underground Gas Storage). Generally, a large amount of cushion gas that is mainly composed of CH4 is required to maintain the enough pressure in the UGS reservoir and it cannot be produced during the UGS operation. If there is an alternative way to mitigate the volume of cushion gas, more cost-effective operation is possible. In this reason, we injected CO2 as a cushion gas and determined optimal number of wells and injection/withdrawal rate without CO2 production. The reservoir opportunity index was used to select the target drilling points. The proper volume of working and cushion gas were obtained respectively in various gas rate case. As a result, injected CO2 can supply additional pressure to the reservoir that more effective UGS operation is possible. And injection rate is a critical factor for the stable working gas injection and production from the economic point of view. Also, a design for a complete CCS system was developed based on the existing off-shore pipeline in combination with new on-shore CO2 transport infrastructure.

Modeling of Underground Gas Storage in a Depleted Gas Field

2005 ◽  
Vol 27 (10) ◽  
pp. 913-920 ◽  
Author(s):  
F. Gumrah ◽  
Ö. Izgec ◽  
U. Gokcesu ◽  
S. Bagci
Keyword(s):  
Gas Storage ◽  
Underground Gas Storage ◽  
Gas Field

scholarly journals Existing methods of creating, operating underground gas storages and enhancing component recovery of layers

2020 ◽  
pp. 51-55
Author(s):  
F. A. Nurmammadli
Keyword(s):  
Natural Gas ◽  
Significant Role ◽  
Cost Effective ◽  
Gas Storage ◽  
Gas Condensate ◽  
Oil Fields ◽  
Underground Gas Storage ◽  
Geological Conditions ◽  
Unconventional Methods ◽  
Gas Supply

A significant role in ensuring the reliability of gas supply is played by underground gas storages, which are the most cost-effective objects for reserving natural gas. With all the originality of solving the issues of gas supply reliability by constructing underground gas storage in depleted gas condensate, gas and oil fields and aquifers, which are traditional methods, the absence of such geological conditions necessitates searching for other, unconventional methods of creating underground gas storages.

scholarly journals DEVELOPMENT OF AN OPTIMAL PLACEMENT ALGORITHM FOR ELECTROCHEMICAL PROTECTION OF UNDERGROUND STEEL GAS PIPELINES

2020 ◽  
pp. 6-17
Author(s):  
O. N. Medvedeva ◽  
S. I. Astashev
Keyword(s):  
Gas Storage ◽  
Operational Reliability ◽  
Negative Influence ◽  
Technical Condition ◽  
Optimal Number ◽  
Optimal Placement ◽  
Underground Gas Storage ◽  
Electrochemical Protection ◽  
Mode Of Operation ◽  
Placement Algorithm

Statement of the problem. The paper considers the process of complex periodic corrosion inspection in order to assess the effectiveness and improve the operational reliability of the corrosion protection system (CPS) using the example of on-site technological networks of the underground gas storage Elshanskaya. Results. The technical condition of the electrochemical protection means, the level of active protection and the technical condition of pipelines of the underground gas storage were assessed, the object was protected by its length and time, and zones of negative influence of constant and stray currents were identified. A method is proposed for determining the optimal number and locations of cathodic protection stations (CPS). Conclusions. Based on the research results, a commissioning method is proposed that provides the optimal technological mode of operation of electrochemical protection means (EChP), and proposals have been developed to ensure the effectiveness of diagnostics and the safety of further operation of gas distribution pipelines. The implementation of this approach in the design of EChP facilities can lead to a significant reduction in energy consumption during operation.

Development of an Optimal Placement Algorithm for Electrochemical Protection of Underground Steel Gas Pipelines

2020 ◽  
pp. 9-19
Author(s):  
О. Н. Медведева ◽  
С. И. Асташев ◽  
В. Н. Мелькумов
Keyword(s):  
Gas Storage ◽  
Operational Reliability ◽  
Negative Influence ◽  
Technical Condition ◽  
Optimal Number ◽  
Optimal Placement ◽  
Underground Gas Storage ◽  
Electrochemical Protection ◽  
Mode Of Operation ◽  
Placement Algorithm

Постановка задачи. Рассматривается процесс комплексного периодического коррозионного обследования с целью оценки эффективности и повышения эксплуатационной надежности системы противокоррозионной защиты на примере внутриплощадочных технологических сетей компрессорного цеха Елшанской станции подземного хранения газа (СПХГ). Результаты. Произведена оценка технического состояния средств электрохимической защиты, уровня активной защиты и технического состояния отдельных элементов трубопроводов Елшанской СПХГ, определена защищенность объекта по протяженности и во времени, выявлены зоны негативного влияния постоянных и блуждающих токов. Предложен метод определения оптимального количества и мест размещения станций катодной защиты на примере площадки СПХГ. Выводы. По результатам исследований предложен способ наладки, обеспечивающий оптимальный технологический режим работы средств электрохимической защиты, разработаны предложения по обеспечению эффективности диагностики и безопасности дальнейшей эксплуатации газораспределительных трубопроводов. Реализация данного подхода при проектировании средств электрохимической защиты позволит существенно снизить энергозатраты при эксплуатации. Statement of the problem. The paper considers the process of complex periodic corrosion inspection in order to assess the effectiveness and improve the operational reliability of the corrosion protection system using the example of on-site technological networks of the underground gas storage Yelshanskaya. Results. The technical condition of the electrochemical protection tools, the level of active protection and the technical condition of pipelines of the underground gas storage were assessed, the object was protected by its length and time, and zones of negative influence of constant and stray currents were identified. A method is proposed for determining the optimal number and locations of cathodic protection stations. Conclusions. Based on the research results, a commissioning method is proposed that provides the optimal technological mode of operation of electrochemical protection tools. Proposals have been developed to ensure the effectiveness of diagnostics and safety of further operation of gas distribution pipelines. The implementation of this approach in the design of electrochemical protection means facilities might lead to a significant reduction in energy consumption during operation.

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.

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