Carbon isotope study of methane production in a town gas storage reservoir

Bůzek, František; Onderka, Vladimír; Vancura, P; Wolf, I.

doi:10.1016/0016-2361(94)90019-1

Cited by 64 publications

(46 citation statements)

References 4 publications

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“…The sufficient presence of methanogenic bacteria was detected in stratal water of the Lobodice geological formation (103-104 cells/ml). The laboratory test performed in Smigai et al (1990) and Buzek et al (1994) confirmed that the reservoir conditions in the presence of methanogenic micro-organisms are optimal for such a reaction. The high activity of archeobacteries, the category which methanogenes belong to, at these temperatures is well-known though.…”

Section: Physical Explanation Of Observed Phenomena: Bacteria Activitysupporting

confidence: 70%

“…These observations (Smigai et al 1990;Buzek et al 1994) revealed high variations of gas composition in time and space. In particular, a significant reduction in the H 2 and CO 2 contents and a simultaneous increase in CH 4 contents were observed in the Lobodice town gas storage facility (Smigai et al 1990).…”

Section: Data On Unusual Behavior Of Uhsmentioning

confidence: 85%

“…The true explanation for this chemical effect, suggested in Smigai et al (1990) and Buzek et al (1994), is only possible if we assume that a following chemical reaction between injected H 2 and CO 2 occurs in the reservoir:…”

Section: Physical Explanation Of Observed Phenomena: Bacteria Activitymentioning

confidence: 96%

“…The consecutive isotopic analysis of methane produced from wells (Buzek et al 1994), has shown the isotopic origin of a part of methane to be different from that of the methane injected originally, by justifying the hypothesis involving in situ methane generators.…”

Section: Data On Unusual Behavior Of Uhsmentioning

confidence: 97%

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Underground Storage of Hydrogen: In Situ Self-Organisation and Methane Generation

Panfilov

2010

Transp Porous Med

133

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In situ observations have shown that underground storage of hydrogen behaves like a natural chemical reactor and generates methane. The mechanism of this generation is the metabolic activity of methanogenic bacteria which consume hydrogen and carbon dioxide and transform them into methane and water. The coupled mathematical model of the reactive transport and population dynamics in a storage is suggested in this paper which also takes into account the fact that the population growth rate depends on the structure of the bacterium colony. The suggested system of equations is reduced to the Turing reaction-diffusion model which proves the appearance of non-attenuating self-oscillations in time which are uniform in space. These solutions are unstable and, once perturbed, generate regular spatial stationary waves which correspond to the alternations of zones which are rich in CH 4 or CO 2 . This result predicts the effect of a natural in situ separation of gases, which was observed in practice. If the diffusivity of bacteria is neglected with respect to the effective diffusivity of the injected gas, then only large-scale spatial waves arise. A low but non-zero bacterium diffusivity causes the appearance of additional small-scale linear oscillations whose period is the intrinsic parameter of the process and is proportional to the bacteria-gas diffusivity ratio. The analysis is completed with numerical simulations of 2D problems and analytical solutions of 1D problems obtained using the technique of two-scale asymptotic expansion. The estimations for the parameters of the model were obtained.

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Section: Physical Explanation Of Observed Phenomena: Bacteria Activitysupporting

confidence: 70%

Section: Data On Unusual Behavior Of Uhsmentioning

confidence: 85%

Section: Physical Explanation Of Observed Phenomena: Bacteria Activitymentioning

confidence: 96%

Section: Data On Unusual Behavior Of Uhsmentioning

confidence: 97%

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Underground Storage of Hydrogen: In Situ Self-Organisation and Methane Generation

Panfilov

2010

Transp Porous Med

133

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“…Evidence for this phenomenon is given by observations in mixed gas and natural gas storage sites. In the town gas storage site near Lobodice, a drastic change in the gas composition was observed during a storage cycle of 7 months (Buzek et al 1994(Buzek et al ). Š migáň et al (1990 had observed that an increase in CH 4 and decreases in CO, CO 2 and H 2 resulted from the in-situ production of CH 4 by methanogenic archaea.…”

Section: Introductionmentioning

confidence: 99%

Mathematical modeling of unstable transport in underground hydrogen storage

et al. 2015

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Within the framework of energy transition, hydrogen has a great potential as a clean energy carrier. The conversion of electricity into hydrogen for storage and transport is an efficient technological solution, capable of significantly reducing the problem of energy shortage. Underground hydrogen storage (UHS) is the best solution to store the large amount of excess electrical energy arising from the excessive over-production of electricity, with the objective of balancing the irregular and intermittent energy production, typical of renewable sources such as windmills or solar. Earlier studies have demonstrated that UHS should be qualitatively identical to the underground storage of natural gas. Much later, however, it was revealed that UHS is bound to incur peculiar difficulties, as the stored hydrogen is likely to be used by the microorganisms present in the rocks for their metabolism, which may cause significant losses of hydrogen. This paper demonstrates that besides microbial activities, the hydrodynamic behavior of UHS is very unique and different from that of a natural gas storage.

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