Depositional environmental controls on mechanical stratigraphy of Barakar Shales in Rajmahal Basin, India

Sethi, Chinmay; Hazra, Bodhisatwa; Ostadhassan, Mehdi; Motra, Hem Bahadur; Dutta, Arpan; Pandey, J.K.; Kumar, Santosh

doi:10.1016/j.coal.2024.104477

Cited by 6 publications

(20 citation statements)

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“…Rock-Eval Pyrolysis. Geochemical analysis of <212 μm-sized crushed shale samples was conducted using a Rock-Eval 6 pyrolyzer 38 following the "Basic/Bulk Rock method". 42,43 The pyrogram followed isothermal conditions at 300 °C for a period of 3 min, and then the temperature was incrementally increased at a rate of 25 °C/min until the uppermost threshold of 650 °C was reached.…”

Section: Samples and Methodsmentioning

confidence: 99%

“…46 Mineral identification was performed utilizing the ICDD PDF-2 (2018) database and the integrated XRD program PDXL2. 38 3.3. Low Pressure Gas Adsorption.…”

Section: Samples and Methodsmentioning

confidence: 99%

“…Geochemical analysis of <212 μm-sized crushed shale samples was conducted using a Rock-Eval 6 pyrolyzer following the “Basic/Bulk Rock method”. , The pyrogram followed isothermal conditions at 300 °C for a period of 3 min, and then the temperature was incrementally increased at a rate of 25 °C/min until the uppermost threshold of 650 °C was reached. Throughout this procedure, a range of geochemical data was acquired, such as the S 1 , S 2 , S 3 , and S 3 ′ curves, along with the T max value (thermal maturity indicator of the samples), in conjunction with the measurement of the TOC (wt %) . Further information regarding the procedure can be found in − …”

Section: Samples and Methodsmentioning

confidence: 99%

“…The total scan range of 2θ extended from 10 to 80°, with an increment of 0.01 deg/scan and a continuous scanning speed of 10.40182° per minute . Mineral identification was performed utilizing the ICDD PDF-2 (2018) database and the integrated XRD program PDXL2 …”

Section: Samples and Methodsmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

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CO₂ Storage Potential of Coaly Shales of the Barakar Formation in the Rajmahal Basin, India

Safaei-Farouji,

Sethi,

Hazra

et al. 2024

Energy Fuels

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Coaly shale layers are frequently found in most basins around the world, but less is known about their CO 2 sequestration and shale gas potential. To fill this knowledge gap, the mineralogy, geochemical, and pore structure properties of 12 coaly shale samples collected from the Barakar Formation within the Rajmahal Basin in India were examined by XRD analysis, programmed pyrolysis, and low-pressure nitrogen (N 2 ) and carbon dioxide (CO 2 ) adsorption, respectively. The results showed that the samples are organic rich, with 3.05 to 33.92 wt % total organic carbon (TOC). Moreover, Rock-Eval pyrolysis revealed the abundance of gas-prone kerogen type III in these coaly shales, with temperature of maximum pyrolysis yield (T max ) values between 422 and 446 °C, indicative of an immature to early maturity stage. N 2 adsorption experiments showed that samples' BET-specific surface areas (BET-SSA) vary from 8.47 to 32.4 m 2 /g, and pores are generally between 20 and 23 nm. However, the CO 2 adsorption measurements suggested that the samples' DFT surface area is 23.064 to 108.3 m 2 /g. The D−A pore diameter was found to range from 1.31 to 1.71 nm, and the DFT micro-PSD indicated substantial peaks for pores smaller than 0.6 nm in all samples. The adsorbed CO 2 volume also ranged between 2.06 and 10.30 cm 3 /g. According to the fractal analysis, a higher pore structure complexity of the samples compared to their pore surface roughness was observed. Overall, although the investigated coaly shales had favorable geochemical and petrophysical characteristics as shale gas resources, the thermal maturity of the organic matter suggests low volumes of generated gas. On the contrary, the ideal microporous characteristics, including the high micropore surface areas and the existence of pores below 1 nm, as well as large CO 2 adsorption quantities that originate from high amounts of organic matter content and their coaly nature, could recommend their great potential for storing CO 2 . Accordingly, further and supplementary investigations in the region are recommended to gain more information regarding the CO 2 storage capacity in the Barakar Formation.

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Section: Samples and Methodsmentioning

confidence: 99%

“…46 Mineral identification was performed utilizing the ICDD PDF-2 (2018) database and the integrated XRD program PDXL2. 38 3.3. Low Pressure Gas Adsorption.…”

Section: Samples and Methodsmentioning

confidence: 99%

Section: Samples and Methodsmentioning

confidence: 99%

Section: Samples and Methodsmentioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

See 3 more Smart Citations

CO₂ Storage Potential of Coaly Shales of the Barakar Formation in the Rajmahal Basin, India

Safaei-Farouji,

Sethi,

Hazra

et al. 2024

Energy Fuels

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Introduction

Hazra,

Chandra,

Vishal

2024

Unconventional Hydrocarbon Reservoirs: Coal and Shale

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Assessment of depositional environmental factors in quaternary sediments: a case study of Thamirabarani River basin, Srivaikundam region of southern India

Abishek,

Christinal,

Ravindran

et al. 2024

Discov Geosci

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This study uses a thorough grain size analysis approach to the depositional environment in the Thamirabarani River basin, specifically in the Srivaikundam district of Tamil Nadu, India. There is a significant lack of research on the depositional settings and sediment features unique to the Thamirabarani River basin, even though there have been numerous sediments studies conducted in other river basins. Consequently, the purpose of this study is to investigate the depositional habitats and sediment characteristics of this area. The majority of the 18 sediment samples were determined to be medium- to fine-grained and poorly sort-able after extensive analysis using granulometric research and sieve methods. The low-energy formation process took place in a largely fine-grained or very fine-grained sandy soil, as indicated by the sediments platykurtic and mesokurtic morphologies. The depositional habitats within the region can be better understood by classifying the soil based on ternary plots of clay, silt, and sand, such as particle distribution curve. Furthermore, comparison with a unified soil classification chart aids in further categorizing the soil types. Soils can be classified and the depositional settings of different landscapes, such as rivers, estuaries, beaches, and aeolian terrains, can be better understood with the use of this comprehensive grain size study. Another interesting aspect of the Thamirabarani River basin sediment movement and deposition is the slow breakdown of rocks, especially feldspar and quartz, as they move through rivers and streams.

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Depositional environmental controls on mechanical stratigraphy of Barakar Shales in Rajmahal Basin, India

Cited by 6 publications

References 84 publications

CO₂ Storage Potential of Coaly Shales of the Barakar Formation in the Rajmahal Basin, India

CO₂ Storage Potential of Coaly Shales of the Barakar Formation in the Rajmahal Basin, India

Introduction

Assessment of depositional environmental factors in quaternary sediments: a case study of Thamirabarani River basin, Srivaikundam region of southern India

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Depositional environmental controls on mechanical stratigraphy of Barakar Shales in Rajmahal Basin, India

Cited by 6 publications

References 84 publications

CO2 Storage Potential of Coaly Shales of the Barakar Formation in the Rajmahal Basin, India

CO2 Storage Potential of Coaly Shales of the Barakar Formation in the Rajmahal Basin, India

Introduction

Assessment of depositional environmental factors in quaternary sediments: a case study of Thamirabarani River basin, Srivaikundam region of southern India

Contact Info

Product

Resources

About

CO₂ Storage Potential of Coaly Shales of the Barakar Formation in the Rajmahal Basin, India

CO₂ Storage Potential of Coaly Shales of the Barakar Formation in the Rajmahal Basin, India