Alterations of Carbonate Mineral Matrix and Kerogen Micro-Structure in Domanik Organic-Rich Shale during Anhydrous Pyrolysis
The study of organic-rich carbonate-containing shales after heating is an important task for the effective application of in-situ thermal kerogen conversion technologies implemented for these types of rocks. This research was conducted to study changes in the rocks of the Domanik Formation after hig...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-07-01
|
| Series: | Minerals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-163X/12/7/870 |
| _version_ | 1797416795445919744 |
|---|---|
| author | Tagir Karamov Viktoria White Elizaveta Idrisova Elena Kozlova Alexander Burukhin Andrey Morkovkin Mikhail Spasennykh |
| author_facet | Tagir Karamov Viktoria White Elizaveta Idrisova Elena Kozlova Alexander Burukhin Andrey Morkovkin Mikhail Spasennykh |
| author_sort | Tagir Karamov |
| collection | DOAJ |
| description | The study of organic-rich carbonate-containing shales after heating is an important task for the effective application of in-situ thermal kerogen conversion technologies implemented for these types of rocks. This research was conducted to study changes in the rocks of the Domanik Formation after high-temperature treatment, taking into account the nature of structural changes at the micro level and chemical transformations in minerals. The sample of organic-rich carbonate-containing shales of the Domanik Formation was treated in stages in a pyrolizer in an inert atmosphere in the temperature range of 350–800 °C for 30 min at each temperature. By means of X-ray powder diffractometry (XRPD), HAWK pyrolysis, light and scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and computed micro-tomography, the characteristics of the rock before and after each heating stage were studied. The results showed significant alteration of the mineral matrix in the temperature range 600–800 °C, including the decomposition of minerals with the formation of new components, and structural alterations such as fracturing micropore formation. The organic matter (OM) was compacted at T = 350–400 °C and fractured. The evolution of void space includes fracture formation at the edges between rock components, both in organic matter and in minerals, as well as nanopore formation inside the carbonate mineral matrix. The results obtained show what processes at the microlevel can occur in carbonate-containing organic-rich shales under high-temperature treatment, and how these processes affect changes in the microstructure and pore space in the sample. These results are essential for modeling and the effective application of thermal EOR in organic-rich shales. |
| first_indexed | 2024-03-09T06:09:20Z |
| format | Article |
| id | doaj.art-5a1fbea4012849a48be7495e1768541d |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-09T06:09:20Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-5a1fbea4012849a48be7495e1768541d2023-12-03T12:00:08ZengMDPI AGMinerals2075-163X2022-07-0112787010.3390/min12070870Alterations of Carbonate Mineral Matrix and Kerogen Micro-Structure in Domanik Organic-Rich Shale during Anhydrous PyrolysisTagir Karamov0Viktoria White1Elizaveta Idrisova2Elena Kozlova3Alexander Burukhin4Andrey Morkovkin5Mikhail Spasennykh6Center for Petroleum Science and Engineering, Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30, 121205 Moscow, RussiaCenter for Petroleum Science and Engineering, Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30, 121205 Moscow, RussiaCenter for Petroleum Science and Engineering, Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30, 121205 Moscow, RussiaCenter for Petroleum Science and Engineering, Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30, 121205 Moscow, RussiaCenter for Petroleum Science and Engineering, Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30, 121205 Moscow, RussiaCenter for Petroleum Science and Engineering, Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30, 121205 Moscow, RussiaCenter for Petroleum Science and Engineering, Skolkovo Institute of Science and Technology, Bolshoy Boulevard 30, 121205 Moscow, RussiaThe study of organic-rich carbonate-containing shales after heating is an important task for the effective application of in-situ thermal kerogen conversion technologies implemented for these types of rocks. This research was conducted to study changes in the rocks of the Domanik Formation after high-temperature treatment, taking into account the nature of structural changes at the micro level and chemical transformations in minerals. The sample of organic-rich carbonate-containing shales of the Domanik Formation was treated in stages in a pyrolizer in an inert atmosphere in the temperature range of 350–800 °C for 30 min at each temperature. By means of X-ray powder diffractometry (XRPD), HAWK pyrolysis, light and scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and computed micro-tomography, the characteristics of the rock before and after each heating stage were studied. The results showed significant alteration of the mineral matrix in the temperature range 600–800 °C, including the decomposition of minerals with the formation of new components, and structural alterations such as fracturing micropore formation. The organic matter (OM) was compacted at T = 350–400 °C and fractured. The evolution of void space includes fracture formation at the edges between rock components, both in organic matter and in minerals, as well as nanopore formation inside the carbonate mineral matrix. The results obtained show what processes at the microlevel can occur in carbonate-containing organic-rich shales under high-temperature treatment, and how these processes affect changes in the microstructure and pore space in the sample. These results are essential for modeling and the effective application of thermal EOR in organic-rich shales.https://www.mdpi.com/2075-163X/12/7/870void space structure evolutioncarbonate mineral matrixDomanik Formationtemperature treatmentmineral compositionorganic matter |
| spellingShingle | Tagir Karamov Viktoria White Elizaveta Idrisova Elena Kozlova Alexander Burukhin Andrey Morkovkin Mikhail Spasennykh Alterations of Carbonate Mineral Matrix and Kerogen Micro-Structure in Domanik Organic-Rich Shale during Anhydrous Pyrolysis Minerals void space structure evolution carbonate mineral matrix Domanik Formation temperature treatment mineral composition organic matter |
| title | Alterations of Carbonate Mineral Matrix and Kerogen Micro-Structure in Domanik Organic-Rich Shale during Anhydrous Pyrolysis |
| title_full | Alterations of Carbonate Mineral Matrix and Kerogen Micro-Structure in Domanik Organic-Rich Shale during Anhydrous Pyrolysis |
| title_fullStr | Alterations of Carbonate Mineral Matrix and Kerogen Micro-Structure in Domanik Organic-Rich Shale during Anhydrous Pyrolysis |
| title_full_unstemmed | Alterations of Carbonate Mineral Matrix and Kerogen Micro-Structure in Domanik Organic-Rich Shale during Anhydrous Pyrolysis |
| title_short | Alterations of Carbonate Mineral Matrix and Kerogen Micro-Structure in Domanik Organic-Rich Shale during Anhydrous Pyrolysis |
| title_sort | alterations of carbonate mineral matrix and kerogen micro structure in domanik organic rich shale during anhydrous pyrolysis |
| topic | void space structure evolution carbonate mineral matrix Domanik Formation temperature treatment mineral composition organic matter |
| url | https://www.mdpi.com/2075-163X/12/7/870 |
| work_keys_str_mv | AT tagirkaramov alterationsofcarbonatemineralmatrixandkerogenmicrostructureindomanikorganicrichshaleduringanhydrouspyrolysis AT viktoriawhite alterationsofcarbonatemineralmatrixandkerogenmicrostructureindomanikorganicrichshaleduringanhydrouspyrolysis AT elizavetaidrisova alterationsofcarbonatemineralmatrixandkerogenmicrostructureindomanikorganicrichshaleduringanhydrouspyrolysis AT elenakozlova alterationsofcarbonatemineralmatrixandkerogenmicrostructureindomanikorganicrichshaleduringanhydrouspyrolysis AT alexanderburukhin alterationsofcarbonatemineralmatrixandkerogenmicrostructureindomanikorganicrichshaleduringanhydrouspyrolysis AT andreymorkovkin alterationsofcarbonatemineralmatrixandkerogenmicrostructureindomanikorganicrichshaleduringanhydrouspyrolysis AT mikhailspasennykh alterationsofcarbonatemineralmatrixandkerogenmicrostructureindomanikorganicrichshaleduringanhydrouspyrolysis |