Key evaluation techniques in the process of gas reservoir being converted into underground gas storage

Zheng, Dewen; Xu, Huikai; Wang, Jieming; Sun, Jianmeng; Zhao, Kai; Li, Chun; Shi, Lei; Tang, Lina

doi:10.1016/s1876-3804(17)30095-2

Cited by 59 publications

(33 citation statements)

References 10 publications

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“…where Ppositive pressure on the fault plane, MPa σmain compressive stress in the area, MPa βangle of intersection with the fault line αinternal friction coefficient of rock, generally taken as 0.6~0.8 for mudstone caprock Zburial depth, m ρ r -average density of overlying strata, g/cm 3 ρ wformation water density, g/cm 3 The sealing property of a fault has the following characteristics in the quantitative evaluation of sealing property using the abnormal formation pressure method:…”

Section: Mechanical Characteristics Of Fault Planementioning

confidence: 99%

“…How to build gas storages under the geologic conditions of low permeability, ultra-large burial depth and complex oil, gas and water systems is quite challenging. The three-dimensional space description of the geologic structure form of underground gas storages is the basic and key work for the study of the geologic scheme for underground gas storages [1][2][3]. Especially the three aspects of gas storages including sealing property, storage capacity, and geologic body conditions available or unavailable for gas storage construction are the key points for the demonstration of the static geologic conditions of gas storages.…”

Section: Introductionmentioning

confidence: 99%

“…(2) The standard of four-property relationship from logging should be re-established to interpret the possible changes in reservoir physical properties and gas-bearing properties after gas reservoir depletion. (3) It is necessary to establish a high-precision 3D geologic model with large-scale traps as the core to lay a geologic foundation for the later operation optimization and simulation prediction of gas storages.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Geological Evaluation for Gas Storage Construction in Reservoirs

Ma¹

2020

Handbook of Underground Gas Storages and Technology in China

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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

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Section: Mechanical Characteristics Of Fault Planementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Geological Evaluation for Gas Storage Construction in Reservoirs

Ma¹

2020

Handbook of Underground Gas Storages and Technology in China

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“…The flaring or venting of associated gas not only causes energy waste but also adversely affects the environment. In contrast, reinjection is a type of treatment method that is beneficial to sustainable development [ 3 , 4 , 5 ]. In some oil fields, associated gas is used as a lift gas to raise oil recovery [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Corrosion Failure Mechanism of Associated Gas Transmission Pipeline

et al. 2018

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Corrosion has been responsible for several gas pipeline leakage accidents; thus, clarifying its failure mechanisms is a precondition to prevent such accidents. On the basis of failure analysis of corroded pipe sections, laboratory exposure tests were conducted by simulating three possible corrosion environments inside a gas pipeline. The corrosion rate indicated by depth change was adopted in this study. Scanning electron microscopy and X-ray diffraction were used to analyze corrosion products. Results showed that the specimens completely immersed in condensate water were generally corroded and that the specimens exposed to gas were locally corroded. However, the corrosion rate of the latter was slightly lower; hence, no autocatalysis of occluded corrosion cell occurred in the formation of corrosion pit, and uniform corrosion occurred in the precipitation location of condensate water. The areas in the range of 5 mm below the waterline indicated severe corrosion, and the rate could reach twice that of other areas. The corrosion products were mainly FeO(OH) and FeCO3, thereby proving that the corrosion failure of pipelines was caused by oxygen absorption corrosion and CO2 corrosion. Suggestions were presented to control corrosion failure of associated gas pipelines.

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“…underground gas storage increased slowly, and the technology for building gas storage was relatively regressive until the 1940s. [3][4][5] After World War II, the construction of underground gas storage became an independent discipline, and the technical level developed rapidly. In particular, a series of supporting technical systems for the underground gas storage construction were gradually improved, including the evaluation technology system of rebuilding abandoned oil and gas reservoirs, aquifer reservoirs, and altering abandoned salt mines into underground gas storage.…”

mentioning

confidence: 99%

Estimating reservoir parameters and gas storage volume available in the DU6 gas field, Northeast China

Wang

2021

Int J Energy Res

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This study comprehensively evaluated the feasibility of the DU6 gas reservoir for gas storage in terms of storage performance, safety, and effectiveness. First, based on the fine division of small layers in the target area, the existing sedimentary facies markers, and paleoenvironment were identified and the fan delta front subfacies sedimentary model was established. The microfacies included an underwater distributary channel, mouth bar, sand sheet, and interdistributary bay, and the horizontal and vertical distributions of the effective reservoir sandstone were determined. Then, using petrophysical experimental data, the macroscopic and microstructural characteristics of the reservoir rock were examined, and the type and composition characteristics of the sandstone, pores, and the connectivity between pores were evaluated. By employing mechanical experiments, it was found that the sandstone permeability change rate with pressure is very large, reaching as high as 50%. In addition, the relationship between the pressure and rock micropore structure change was established. Finally, based on the fine reservoir characterization, the potential of transforming DU6 reservoir into gas storage was evaluated, and the sealing properties of its faults, top caprocks, and surrounding water were identified. The effective pore volume for underground gas storage was determined quantitatively, and the utilization rates of pores were calculated according to different sedimentary microfacies. Overall, the available gas sand body volume of the DU6 gas reservoir was found to be 9048 × 10 4 m 3 , with a gas storage capacity reaching 99.27 × 10 8 m 3 . These results will provide reliable technical support for the successful reconstruction of underground gas storage areas.

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Key evaluation techniques in the process of gas reservoir being converted into underground gas storage

Cited by 59 publications

References 10 publications

Geological Evaluation for Gas Storage Construction in Reservoirs

Geological Evaluation for Gas Storage Construction in Reservoirs

Corrosion Failure Mechanism of Associated Gas Transmission Pipeline

Estimating reservoir parameters and gas storage volume available in the DU6 gas field, Northeast China

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