Saeed, Shadi A. and Hakimi, Mohammed Hail and Al-Muntaser, Ameen A. and Khamieva, Aliia N. and Varfolomeev, Mikhail A. and Morozov, Vladimir P. and Lashin, Aref and Abdelaal, Mohamed A. and Suwaid, Muneer A. and Mustapha, Khairul Azlan and Djimasbe, Richard and Kadyrov, Rail I. and Gareev, Bulat I. and Kwofie, Michael (2023) Geochemical, mineralogical and petrographical characteristics of the domanik formation from north samara region in the volga-ural basin, Russia: Implication for unconventional tight oil reservoir potential. Geoenergy Science and Engineering, 220 (A). ISSN 2949-8929, DOI https://doi.org/10.1016/j.petrol.2022.111240.
Full text not available from this repository.Abstract
This paper comprehensively analyzes the geochemical, mineralogical and petrographical properties combined with bulk kinetics modeling of the Domanik organic-rich carbonate from various depth intervals in Kuzminovsky oilfield (well N degrees 26 R), Volga-Ural Basin, Russia. The results show that, the Domanik carbonate-rich samples are characterized by high content of the total organic matter (TOC) up to 13.31 wt %, and contain mainly Type II kerogen with a slight II/III kerogen type, reaching very good to excellent oil generation potential. Moreover, the studied samples contain hydrogen-rich kerogen, which expected to generate paraffin, naphthene and aromatic (P-N-A) oil with low wax content as demonstrated by the Py-GC Pyrolysis combined with the abundance of fluorescent alginite, amorphous organic matter, and bituminite as established from investigations via micro-scope. The maturity indicators demonstrated that, most of the examined Domanik carbonate-rich samples, with a burial depth between 1726.5 m and 1784.9 m, have generally reached low thermal maturity stages; thus, defining an immature to moderate-mature of oil generation window. The results of the kinetic models suggested that, Domanik carbonate-rich rocks with vitrinite reflectance (VRo) values in the range of 0.60-0.71%, have reached relatively low kerogen transformation ratio in the range of 10-20%, indicating low probability oil generation. These finding are confirmed by the presence of low oil saturation index of less than 100 mg HC/g rock (19.64-69.97). In addition, the results of thin section, scanning electron microscopy (SEM) and micro -computed tomography (micro-CT) showed that the studied samples are characterized by low porosity (up to 3.29%) with a wide pores size range, including interparticle, cavities, cracks and organic matter pores. The development of these pore types and their quality in the studied samples is mainly controlled by high miner-alogical brittleness (i.e., carbonate and quartz) together with the high organic matter inputs. Therefore, ac-cording to the obtained results, characteristics and observations, the Domanik Formation has a high potential for commercial oil production, which typically requires hydraulic fracturing followed by an in-situ retort, mainly by thermal methods such as steam injection and in situ combustion process.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Science and Higher Education of the Russian Federation (Grant No: 075-15-2022- 299), King Saud University in Riyadh, Saudi Arabia (Grant No: RSP-2021/92) |
| Uncontrolled Keywords: | Domanik Formation; Organic-rich rocks; Kinetic modeling; Unconventional tight oil; Volga-Ural Basin (Russia) |
| Subjects: | Q Science > QE Geology |
| Divisions: | Faculty of Science > Department of Geology |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 29 Nov 2023 01:42 |
| Last Modified: | 29 Nov 2023 01:42 |
| URI: | http://eprints.um.edu.my/id/eprint/39319 |
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