Pore Structure Characterization of Shales from Kachchh and Kaladgi Basins
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1Sagar Thakurdas*, 2Dhananjay Meshram, 3Bhawanisingh G. Desai, and 4Uday Kulkarni
| Bulletin of Pure and Applied Sciences.
Geology (Geological Science), Vol.42F, No.1, January-June 2023: P.138-143 |
| Original Article
DOI: 10.48165/bpas.2023.42F.1.11 |
Description
Description
Pore Structure Characterization of Shales from Kachchh and Kaladgi Basins
1Sagar Thakurdas*, 2Dhananjay Meshram, 3Bhawanisingh G. Desai, and 4Uday Kulkarni
| Author’s Affiliations:
1Assistant Professor, Department of Geology, Nowrosjee Wadia College, Pune, Maharashtra 411001, India E-mail: sagarthakurdas@gmail.com 2Professor, Department of Geology, Savitribai Phule Pune University, Pune, Maharashtra 411007, India. E-mail: dcmeshram@unipune.ernet.in 3Associate Professor, Pandit Deendayal Energy University, Gandhinagar, Gujarat 382007, India. E-mail:bhawanigd@gmail.com 4 Principal, Moolji Jaitha College, Jalgaon, Maharashtra 425001, India. E-mail: drudkulkarni@gmail.com
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| *Corresponding Author: Sagar Mahendra Thakurdas Assistant Professor, Department of Geology, Nowrosjee Wadia College, Pune, Maharashtra 411001, India
E-mail: sagarthakurdas@gmail.com
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| (Received on 25.02.2023, Revised on 01.05.2023, Approved on 15.05.2023, Accepted on 25.05.2023, Published on 15.06.2023)
How to cite this article: Thakurdas S., Meshram D., Desai B.G, and Kulkarni U. (2023). Pore Structure Characterization of Shales from Kachchh and Kaladgi Basins. Bulletin of Pure and Applied Sciences- Geology, 42F(1), 138-143. |
Abstract
Estimating transport and storage properties of shale is a challenging task, due to the lack of understanding of their pore size characteristics. Matrix of shales have micro (pores less than 2 nm diameter) to meso-pores (pores with 2-50 nm diameter) within them. These nano scale pores are mainly associated with clay minerals. The pore structure characteristics of shales viz. surface area, pore size distribution and pore volume, from Kachchh basin of Gujrat and Kaladgi basin of Karnataka, were evaluated using N2physisorption analyses. The samples were analyzed by applying Brunauer–Emmett–Teller (BET) theory for surface area calculation and Barrett–Joyner–Halenda (BJH) theory for understanding the pore size distribution and pore volume. The pore structural characteristics were compared with the mineral composition obtained from X-ray diffraction analysis. Both sample sets show Bi-modal pore size distribution. Bi-modal pore size distribution is indicative of the intra-layer clay pore space. Differential porevolume indicates that porosity is very low in Kaladgi shales in comparison to Kachchh shales.
Keywords: Kachchh, Kaladgi, Shale, Pore size distribution, Shale, BET
