The effect of coal petrology on the capacity of gas methane absorption in coal formation Tanjung Barito in Binuang Region, South Kalimantan

Raharjo, Sugeng; Bahagiarti, Sari; Purwanto, Heru Sigit; Rahmad, Basuki

doi:10.1088/1755-1315/212/1/012029

Cited by 1 publication

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“…12). The pyrite is observed as euhedral and anhedral, framboidal grains or crystals, filling pores and voids, as an indicator of a syngenetic process (Raharjo 2018;Dai et al 2020). The early syngenetic and diagenetic origin is related to a higher gas content in the coals of Landázuri 1.…”

Section: Relationship Between the Measured Gas Content And The Mineral Matter Percentagementioning

confidence: 99%

“…Others (Wang et al 2011;Jian et al 2015;Wang et al 2018; among others) express that it is the inertinitic macerals that have this capacity. Regarding the mineral matter content resulting from the coal formation processes, some authors indicate its relationship with the gas adsorption capacity (e.g., Laxminarayana 1999;Moore 2012;Raharjo et al 2018), with the desorption rate (e.g., Crosdale et al 1998;Li et al 2017) and with the porosity contribution in the sorption process (e.g., Bertrand 1989).…”

Section: Introductionmentioning

confidence: 99%

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Maceral study to determine the desorbed gas content in the Upper Cretaceous coals of the Landázuri area, Middle Magdalena Valley Basin, Colombia

Guatame

Rincón

Bermúdez

2021

Preprint

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For several decades, some coal petrographic properties have been proposed as important parameters in the methane gas sorption processes. In this contribution, the petrographic variables (Vitrinite Ratio, Inertinite Ratio, the petrographic indexes (Gelification Index, Groundwater Index, Tissue Preservation Index, Vegetation Index, Vitrinite/Inertinite ratio, and the Vitrinite Reflectance were evaluated according to the maceral preservation and were related with the desorbed gas content. Twenty-five coal seams obtained from the drill cores of two wells in the Landázuri Area-Valle Medio del Magdalena basin were analyzed. The coal samples were grouped according to gas content using principal component analysis (PCA). The petrographic results were analyzed by linear regression and multiple regression. The Medium Volatile Bituminous to Low Volatile Bituminous coals from Landázuri 1 are twice as high in gas content that the High Volatile Bituminous A to Medium Volatile Bituminous coals from Landázuri 2. The volume percentage and the preservation degree macerals are related closely to the gas content and the pore's size involved in the sorption process. The Inertinite is the maceral group related with the highest gas content groups in Landázuri (600 SCF-Standard Cubic Feet/ton, 300 SCF/ton), while the other groups show the correspondence with the vitrinite macerals. The syngenetic and diagenetic origin of the pyrite contributes microporosity to the desorption process, while the pyrite epigenetic by its size reduces it. The petrographic indexes reveal that the Upper Cretaceous coals were developed in swampy or lacustrine continental basins- limnic facies.

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Section: Relationship Between the Measured Gas Content And The Mineral Matter Percentagementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Maceral study to determine the desorbed gas content in the Upper Cretaceous coals of the Landázuri area, Middle Magdalena Valley Basin, Colombia

Guatame

Rincón

Bermúdez

2021

Preprint

View full text Add to dashboard Cite

show abstract

The effect of coal petrology on the capacity of gas methane absorption in coal formation Tanjung Barito in Binuang Region, South Kalimantan

Cited by 1 publication

References 2 publications

Maceral study to determine the desorbed gas content in the Upper Cretaceous coals of the Landázuri area, Middle Magdalena Valley Basin, Colombia

Maceral study to determine the desorbed gas content in the Upper Cretaceous coals of the Landázuri area, Middle Magdalena Valley Basin, Colombia

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