Current research into the use of supercritical CO2 technology in shale gas exploitation

Wang, Meng; Huang, Kai; Xie, Weidong; Dai, Xiaogan

doi:10.1016/j.ijmst.2018.05.017

Cited by 54 publications

(10 citation statements)

References 36 publications

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“…In a pore system of shale dominated by slit pores, plate-shaped pores, and ink bottle pores, , the throat of an ink bottle pore is narrow, and the internal CH 4 molecule is difficult to move out during the process of conventional depressurization and drainage. Wang et al revealed that supercritical CO 2 would react with organic matter and minerals in the pore wall, which widens the pore throat and increases CH 4 drainage. Additionally, hydraulic fracturing in the shale can be seriously affected by “water sensitivity” and “collapsibility” due to the high clay content of shale, which may cause the internal blocking of pores, damage pore connectivity and influence the effectiveness of hydraulic fracturing.…”

Section: Resultsmentioning

confidence: 99%

Adsorption Characteristics of CH₄ and CO₂ in Shale at High Pressure and Temperature

Xie

Wang

2021

ACS Omega

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This work presents the adsorption behavior and appearance characteristics of CH 4 and CO 2 on the Longmaxi shale at high pressure and temperature. To investigate the variation of gas adsorption patterns under the constraint of pressure and temperature, the applicability of the theories of monolayer adsorption, multilayer adsorption, and micropore filling was discussed. The preferential selection coefficient of CO 2 for CH 4 under different conditions was characterized by the absolute adsorption capacity (V abs ) ratio of CO 2 to CH 4 (αCO 2 /CH 4 ). Moreover, the implication of the CO 2 injection to enhance gas recovery and the CO 2 capture and storage (EGR−CCS) process was analyzed. The results exhibit that the excess adsorption curves of CH 4 are smooth, and the experimental temperature has no noticeable effect on the shape of curves. At the same time, a "sharp peak" is recorded in the excess adsorption curves of CO 2 at low temperatures (30 and 55 °C) near the critical pressure, which is quite distinct from the smooth curves at high temperatures (80 and 100 °C). Correspondingly, there are two "jump pressure" values in the density curves (30 and 55 °C) of the adsorption system and the density curves are divided into three stages. The Dubinin−Astakhov and Brunauer−Emmett−Teller (BET) models show an optimum degree of fit for CH 4 and CO 2 adsorption curves under all experimental temperature and pressure conditions. The Langmuir model fits the adsorption curves of 80 and 100 °C better, while the BET model is appropriate for 30 and 55 °C. The adsorption affinity of CO 2 is higher than CH 4 , with the value of αCO 2 /CH 4 in the range of 2.47−12.16. The value of αCO 2 /CH 4 increases with a rise in pressure but is inhibited by high temperatures, while the inhibition is negligible when the experimental temperature exceeds 80 °C. The adsorption preferential of CO 2 is stronger in the shallow reservoir (αCO 2 /CH 4 > 10.5), and the application prospect of the EGR process is promising. In contrast, the adsorption preferential is slightly weakened in the deep reservoir (αCO 2 /CH 4 < 4.5), which can be considered for CO 2 capture, utilization, and storage. Results from this investigation provide novel insights on the adsorption characteristics of CH 4 and CO 2 on the shale matrix at high pressure and temperature. They are also expected to give certain enlightenment for the EGR−CCS process.

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Section: Resultsmentioning

confidence: 99%

Adsorption Characteristics of CH₄ and CO₂ in Shale at High Pressure and Temperature

Xie

Wang

2021

ACS Omega

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“…How ever, its seal ing prop er ties, es pe cially from the west ern side of the graben, should be care fully tested. Ex cept for lat eral con fine ment, the depth of this res er voir be low 1500 m pro vides good con di tions for CO 2 stor age in a super criti cal state, which is usu ally guar an teed at a depth ex ceed ing 800 m (Wang et al, 2019). This res er voir has a sig nif i cant thick ness of >200 m of pure sand stone which is one of the best in the Ju ras sic se quence within the WKG.…”

Section: Confinement Of the Jurassic Reservoirs Within The Wkgmentioning

confidence: 77%

Tectonics of the Wysoka Kamieńska Graben (NW Poland) and implications for fault sealing potential

Bobek

Konieczyńska

Jarosiński

2021

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Res er voir con fine ment by faults is im por tant for safe stor age of liq uid waste or hy dro car bons. Hav ing ac cess to 3D seis mic and bore hole data, we have in ter preted the tec tonic set ting of the Wysoka Kamieñska Graben (WKG) in the NW part of the Pol ish Ba sin and sub se quently made an in ter pre ta tion of the seal ing po ten tial of the graben-bound ing faults. The for ma tion and de vel op ment of the graben in the Late Tri as sic and Early Ju ras sic was con trolled by me chan i cal de coup ling in the salts of the Zechstein Group. The pri mary tec tonic fac tor trig ger ing the graben or i gin was dextral strike-slip move ment along the re gional fault zone in the Pa leo zoic base ment, transtensional ac com mo da tion of which in the Zechstein-Me so zoic cover led to de vel op ment of a horse-tail pat tern of grabens. Dur ing the Late Cre ta ceous, the graben un der went mi nor tec tonic in version. Seal ing po ten tial anal y sis of the graben-bound ing faults was per formed for the Triassic-Jurassic se quence in clud ing jux ta po si tion seal and fault gouge seal com po nents. Fi nally, we have fo cussed our in ter pre ta tion on the Ju ras sic se quence where the best res er voirs have been rec og nized. Our re sults in di cate good to mod er ate seal ing po ten tial of the Hettangian res er voir, poor to mod er ate seal ing of the Pliensbachian res er voir and lack of seal ing of the Bajocian res er voir. Hence, the Hettangian res er voir, char ac ter ized by large thick ness, low clay con tent and a large re gional ex tent, acts as a po ten tial storage for ma tion, be ing con fined by the graben-bound ing faults of the WKG. Key words: tectonic graben, salt de coup ling level, un der ground stor age, fault seal po ten tial, geo log i cal mod el ling.

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“…The growing production of natural gas and the so-called “shale gas revolution” has sparked discussions about its advantages and disadvantages, as well as about emerging technical problems important for its rational use ( Boersma and Johnson, 2012 ; Grecu et al, 2018 ; Wang, 2018 ; Wang et al, 2019 ; Gao et al, 2021 ). Raw natural gas contains fractions such as CH 4 , H 2 S, CO 2 , C 2 H 6 , and other light alkanes, which are valuable either as chemical feedstock or as fuels ( Shah et al, 2016 ).…”

Section: Catalytic Processes With Transition Metals On Zeolitesmentioning

confidence: 99%

Recent Advances in Catalysis Based on Transition Metals Supported on Zeolites

et al. 2021

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This article reviews the current state and development of thermal catalytic processes using transition metals (TM) supported on zeolites (TM/Z), as well as the contribution of theoretical studies to understand the details of the catalytic processes. Structural features inherent to zeolites, and their corresponding properties such as ion exchange capacity, stable and very regular microporosity, the ability to create additional mesoporosity, as well as the potential chemical modification of their properties by isomorphic substitution of tetrahedral atoms in the crystal framework, make them unique catalyst carriers. New methods that modify zeolites, including sequential ion exchange, multiple isomorphic substitution, and the creation of hierarchically porous structures both during synthesis and in subsequent stages of post-synthetic processing, continue to be discovered. TM/Z catalysts can be applied to new processes such as CO2 capture/conversion, methane activation/conversion, selective catalytic NOx reduction (SCR-deNOx), catalytic depolymerization, biomass conversion and H2 production/storage.

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Current research into the use of supercritical CO2 technology in shale gas exploitation

Cited by 54 publications

References 36 publications

Adsorption Characteristics of CH₄ and CO₂ in Shale at High Pressure and Temperature

Adsorption Characteristics of CH₄ and CO₂ in Shale at High Pressure and Temperature

Tectonics of the Wysoka Kamieńska Graben (NW Poland) and implications for fault sealing potential

Recent Advances in Catalysis Based on Transition Metals Supported on Zeolites

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Current research into the use of supercritical CO2 technology in shale gas exploitation

Cited by 54 publications

References 36 publications

Adsorption Characteristics of CH4 and CO2 in Shale at High Pressure and Temperature

Adsorption Characteristics of CH4 and CO2 in Shale at High Pressure and Temperature

Tectonics of the Wysoka Kamieńska Graben (NW Poland) and implications for fault sealing potential

Recent Advances in Catalysis Based on Transition Metals Supported on Zeolites

Contact Info

Product

Resources

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Adsorption Characteristics of CH₄ and CO₂ in Shale at High Pressure and Temperature

Adsorption Characteristics of CH₄ and CO₂ in Shale at High Pressure and Temperature