The status quo and technical development direction of underground gas storages in China

Ding, Guoyu; Li, Chun; Wang, Jieming; Xu, Huikai; Zheng, Yali; Wanyan, Qiqi; Zhao, Yanjie

doi:10.1016/j.ngib.2015.12.007

Cited by 21 publications

(11 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the gas production stage of a gas storage, as the gas production increases, the reservoir pressure decreases, and edge water gradually invades the gas storage. In the gas injection stage, as the injected gas quantity increases, the reservoir pressure increases, and part of the invaded water is driven out by the injected gas [6][7][8][9]. The gas-water mutual drive relative permeability curve can be used to characterize the relative seepage characteristics of gas and water in porous media, and reflect the dynamic interaction between rocks and fluids during formation fluid interaction displacement.…”

Section: Evaluation Of Effective Storage Spacesmentioning

confidence: 99%

Geological Evaluation for Gas Storage Construction in Reservoirs

Ma¹

2020

Handbook of Underground Gas Storages and Technology in China

View full text Add to dashboard Cite

The basic geological research on the reconstruction of gas-reservoir-type gas storage mainly focuses on evaluating various construction indices of gas storage. Furthermore, studies seek to optimize suitable oil and gas reservoirs for underground gas storage construction through fine structural research, trap sealing property evaluation, fine reservoir characterization, and 3D fine geological modeling. To be specific, the fine structure research technology is used to

show abstract

Section: Evaluation Of Effective Storage Spacesmentioning

confidence: 99%

Geological Evaluation for Gas Storage Construction in Reservoirs

Ma¹

2020

Handbook of Underground Gas Storages and Technology in China

View full text Add to dashboard Cite

show abstract

“…Based on the qualified fitting effect, the directions of the gas flow in the gas injection process and of water coning during the production process are predicted, and the macroscopic movement of gas and water and the breathing passage are clarified. The gas-water macroscopic movement law is determined, and the main channel of the fluid rapid seepage is clarified [36]. Accordingly, the distribution of the lost gas in the Ban 876 underground gas storage is analyzed and defined, and the loss gas is quantified.…”

Section: Numerical Simulation Of High-strength Injection and Productimentioning

confidence: 99%

“…Underground gas storages, especially the ones that has been put into operation in China recent years, have great diseconomy, which causes a large amount of gas loss. However, in another way, the construction of these storages has effectively solved the contradiction between the supply and demand of natural gas in large cities [36]. Since 2017, Beijing has implemented haze control policies and changed most of the power plants' fuel from coal to natural gas, thus reducing pollutant emissions and improving the environment.…”

Section: The Advantages and Disadvantages Of The Construction Of Undementioning

confidence: 99%

Lost Gas Mechanism and Quantitative Characterization during Injection and Production of Water-Flooded Sandstone Underground Gas Storage

et al. 2018

View full text Add to dashboard Cite

A gas-water two-phase fluid is present in a reservoir before a water-flooded sandstone gas reservoir is rebuilt. Therefore, in the process of injection and production of the rebuilt underground gas storage, the injected gas is easily blocked by the water in the pores, and the efficiency is low, resulting in a significant loss of gas. The study completely utilizes the geological data and dynamic operation monitoring data of a water-flooded sandstone underground gas storage and clarifies the rule of the gas-water three-phase seepage in a high-intensity injection-production process. Moreover, the main control factors of the low efficiency of this type of underground gas storage are clarified. The lost gas generated in the injection-production process is described from two aspects: microcosmic experiment and macroscopic law analysis. The type, mechanism, and occurrence state of the loss gas are clearly defined, its main type is "water trapped gas", it formed when the gas rushing into the water area under high pressure and surrounded by water, and its occurrence of this kind of lost gas is mainly sporadic or continuous free gas. A gas-water two-phase mathematical model that can simulate the high-intensity injection-production process is set up according to the experimental result, this model is used to simulate the operation process of the Ban 876 underground gas storage. Based on the simulation results, the gas-water macroscopic movement rule and macroscopic accumulation mode of the lost gas are defined, and then the collection area of the lost gas is predicted and quantitatively described. The calculation results show that the lost gas in one cycle is about 775 × 10 4 m 3 , which are mainly concentrated in the inner of the gas-water transition zone. According to the numerical simulation result, six new wells have been designed to develop its internal lost gas, they all have good predictions, can increase the working gas volume of 3000 × 10 4 m 3 and reduce the single cycle lost gas by 50%, which is only 326 × 10 4 m 3 . This provides guidance for the expansion and exploitation of the same type of water-flooded sandstone underground gas storage.

show abstract

“…Underground gas storage is the main facility for natural gas safe supply, and an important part of national energy security. Accelerating the construction of domestic gas storage is a major strategic measure to ensure natural gas safe supply [1,2]. At present, there are more than 700 gas storage facilities in the world, of which more than 70% are depleted gas storage [1].…”

Section: Introductionmentioning

confidence: 99%

A Caprock Evaluation Methodology for Underground Gas Storage in a Deep Depleted Gas Reservoir: A Case Study for the X9 Lithologic Trap of Langgu Sag, Bohai Bay Basin, China

Jia

Wen

et al. 2022

Energies

View full text Add to dashboard Cite

The evaluation of caprocks’ sealing capacity is exceedingly important for depleted gas reservoirs to be reconstructed into gas storage. In this paper, based on the physical sealing mechanism of caprock, four aspects of ten indexes of caprock quality evaluation were firstly selected, and the related classification standards were established. Secondly, based on the rock mechanical sealing mechanism, elastic and plastic indexes were selected to characterize the mechanical brittleness of caprock, and a brittleness evaluation method of caprock based on complete stress-strain curves was established. Then, a systematic comprehensive evaluation model (including 5 aspects and 12 evaluation indexes) for the sealing capacity of gas storage caprock was proposed, and the analytic hierarchy process (AHP) was used to determine the weight of the 12 indexes in the evaluation model, and the formula for calculating the suitability of the caprock sealing capacity was established. Finally, the geological data, laboratory, and field test data, including X-ray diffraction, poro-permeability test, displacement pressure, and tri-axial compression test, were used for the caprock sealing capacity evaluation of the X9 depleted gas reservoir, and the result from this model showed that the caprock quality is suitable for underground gas storage.

show abstract

The status quo and technical development direction of underground gas storages in China

Cited by 21 publications

References 0 publications

Geological Evaluation for Gas Storage Construction in Reservoirs

Geological Evaluation for Gas Storage Construction in Reservoirs

Lost Gas Mechanism and Quantitative Characterization during Injection and Production of Water-Flooded Sandstone Underground Gas Storage

A Caprock Evaluation Methodology for Underground Gas Storage in a Deep Depleted Gas Reservoir: A Case Study for the X9 Lithologic Trap of Langgu Sag, Bohai Bay Basin, China

Contact Info

Product

Resources

About