Feasibility analysis of using abandoned salt caverns for large-scale underground energy storage in China

Yang, Chunhe; Wang, Tongtao; Li, Yinping; Yang, Haijun; Li, Jianjun; Dan'an, Qu; Xu, Bin; Yang, Yun; Daemen, J.J.K.

doi:10.1016/j.apenergy.2014.07.048

Cited by 205 publications

(54 citation statements)

References 20 publications

(28 reference statements)

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“…This may well explain the permeability increases with the inlet pressure and the fractures appearing in S3. Our previous research (Yang et al, 2015a) shows that the interface between rock salt and mudstone layers is not a weak structure plane but is a plane with high strength. However, the interface composed of two materials (rock salt and mudstone) with low permeability has a high permeability due to their cementation.…”

Section: Permeability Testsmentioning

confidence: 99%

“…Salt cavern UGS (Underground Gas Storage) is widely used to reduce the disadvantages of natural gas demand fluctuations and to cope with some other emergencies (e.g., overhauling, third-party damage, and geologic hazard) on pipeline grids (Yang et al, 2015a;Wang et al, 2013;Ahmet, 2012). Consumers' demand for gas changes daily and seasonally.…”

Section: Introductionmentioning

confidence: 99%

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Safety evaluation of gas storage caverns located close to a tectonic fault

Wang

Yang

et al. 2015

Journal of Natural Gas Science and Engineering

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Section: Permeability Testsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Safety evaluation of gas storage caverns located close to a tectonic fault

Wang

Yang

et al. 2015

Journal of Natural Gas Science and Engineering

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“…Among various kinds of UGSs, salt cavern gas storage is one of the most favorable options (Wang et al, 2015b), because of its excellent injection and delivery capacities Li et al, 2014;Yang et al, 2015). Due to the easy water solubility of rock salt, water solution mining is widely used to construct salt cavern UGSs Zhang et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

A prediction model of the accumulation shape of insoluble sediments during the leaching of salt cavern for gas storage

Shi

Wang

et al. 2016

Journal of Natural Gas Science and Engineering

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“…It will exert the advantages of the natural fracture network to increase production and enhance matrix supply capacity. It will also improve the stimulation effect and have importance in unconventional reservoir recovery.Coal rock mechanics parameters are the prerequisites of CBM reservoir hydraulic fracture prediction, and also help understand the law of crack propagation 10,11 . Since coal contains several developed joints and fissures, which have a major influence on mechanical performance, the differences in mechanical parameters are large between different regions and formations 12 .…”

mentioning

confidence: 99%

Impact Analysis of Multiple Parameters on Fracture formation during Volume Fracturing in Coalbed Methane Reservoirs

Jiang

Zhang

2017

Current Science

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Uniaxial and triaxial compression, Brazilian splitting and three-point bending tests have been carried out to determine the mechanical parameters of the coal reservoir in Jiaozuo coal mining district, Henan Province, China. Based on the experimental results and combined with the target reservoir geological characteristics, a 3D geological mechanical model has been established to analyse the hydraulic fracture propagation during volume fracturing using MEYER software. Effects of the modulus of coal rock, difference between horizontal principal stresses, fracturing fluid viscosity and fracturing fluid injection rate on the fracturing network geometry are studied. Results show that fracturing network development intensity in the coalbed methane (CBM) reservoir is determined both by the geological conditions and the hydraulic fracturing parameters. The intensity of fracturing in the CBM reservoir is positively related with the elastic modulus of the coal rock, and is inversely proportional to the difference between the two horizontal principal stresses. Increasing fluid viscosity reduces the fracturing area. Low injection rate is beneficial to improving hydraulic treatment areas when it is larger than that required to guarantee that the crack extends. The results can provide a case reference for optimization design of volume fracturing and productivity prediction analysis of CBM reservoirs.Keywords: Coalbed methane reservoir, fracture network, numerical simulation, volume fracturing.IN volume fracturing, the resulting fracture network geometry is mainly determined by the in situ stress and rock physical and mechanical properties (elastic modulus, Poisson ratio, tensile strength and fracture toughness). In addition, the fracturing implementation parameters (such as construction scale, capacity, viscosity and filtration of fracturing fluid, etc.) affect fracture geometry to a certain extent 1,2 . Coalbed methane (CBM) reservoirs contain a large number of pores 3 , which make the fracture geometry more complicated. The analysis of fracture network geometry can guide an efficient exploitation of CBM and be of significance on the later evaluation of fracturing effectiveness 4,5 . Volume fracturing as a new kind of fracturing technology is totally different from conventional hydraulic fracturing. It makes full use of the formation bedding and natural fractures to produce a number of transverse and longitudinal artificial fractures which communicate with the natural fracture system away from the wellbore. It is intended to further expand the discharge area, rather than to control the expansion of natural fractures 6,7 . The volume fracturing technology will most likely communicate further natural fractures and form a larger seepage scope 8,9 . It will exert the advantages of the natural fracture network to increase production and enhance matrix supply capacity. It will also improve the stimulation effect and have importance in unconventional reservoir recovery.Coal rock mechanics parameters are the prerequisites of CBM res...

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Feasibility analysis of using abandoned salt caverns for large-scale underground energy storage in China

Cited by 205 publications

References 20 publications

Safety evaluation of gas storage caverns located close to a tectonic fault

Safety evaluation of gas storage caverns located close to a tectonic fault

A prediction model of the accumulation shape of insoluble sediments during the leaching of salt cavern for gas storage

Impact Analysis of Multiple Parameters on Fracture formation during Volume Fracturing in Coalbed Methane Reservoirs

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