INVESTIGATION OF SECONDARY TRANSFORMATIONS WITHIN LOWER CARBONIFEROUS ROCKS OF THE CENTRAL PART OF THE DNIEPER-DONETS DEPRESSION
DOI:
https://doi.org/10.17721/1728-2713.95.09Keywords:
shales, epigenesis, sealing properties, ower Carboniferous, Dnieper-Donets depressionAbstract
The article describes the main study results of the secondary transformations effect on the lower Carboniferous shales at depths exceeding 3 000 m. Using silicate, energy-dispersive X-ray fluorescence analysis and electron microscopic studies, the structure and the main rock-forming components in core samples were studied. The study showed the presence of both background and imposed epigenetic changes in the studied core samples. The intensity and variety of the secondary transformations increase with depth. It has been confirmed that compaction of clay rocks reduces their porosity and improves sealing properties. The presence of scattered siltstone material does not affect the value of porosity. Porosity increases with increasing of kaolinite content which occurred in result of secondary imposed processes. According to the composition of mineral paragenesis, it was found that the studied shales are at the stage of mesocatagenesis. The further research development for the purpose of approximation of microscopic and geochemical data by means of the extended well logging suit was outlined.
References
Alaskari, G. (2018). XRD Evaluation of Clay Minerals in Shaley Formation and Its Comparison With Cross Plotting of Log Data. Progress in Petrochemical Science, 1, 64-70. doi:DOI:10.31031/PPS.2018.01.000513
Bozkaya, O., Yalcin, H. (2004). Diagenetic to low-grade metamorphic evolution of clay mineral assemblages in Paleozoic to early Mesozoic rocks of the Eastern Taurides, Turkey. Clay Minerals, 39(4), 481-500. doi:DOI:10.1180/0009855043940149
Burst, J.F. (1969). Diagenesis of Gulf Coast Clayey Sediments and its possible relation to petroleum migration. AAPG Bulletin, 53(1), 73-93. doi:https://doi.org/10.1306/5D25C595-16C1-11D7-8645000102C1865D
Dunoyer De Segonzac, G. (1970). The transformation of clay minerals during diagenesis and low-grade metamorphism: a review. Sedimentology, 15(3-4), 281-346. doi:https://doi.org/10.1111/j.1365-3091.1970.tb02190.x
Edwards, A., Green, S., Connor, S.O., Goodman, W., Emery, A., Heinemann, N. (2014). Shale diagenesis and its impact on pore pressure prediction: A case study along the NE margin of Eastern Canada. 4th Atlantic Conjugate Margins Conference, 2014, 20-24. St. John's.
Josh, M., Esteban, L., DellePiane, C., Sarout, J., Dewhurst, D.N., Clennell, M.B. (2012). Laboratory characterisation of shale properties. Journal of Petroleum Science and Engineering, 88-89, 107-124. doi:https://doi.org/10.1016/j.petrol.2012.01.023
Kholodov, V.N. (1983). Postsedimentationtransformations in elisional basins. Moscow: Nauka. [in Russian]
Kholodov, V.N. (2013). Types of elision systems and mineral deposits related to them. Geology and Mineral Resources of World Ocean, 3, 5-41. [in Russian]
Klubova, T.T. (1988). Сlayey reservoirs of oil and gas. Moscow: Nedra. [in Russian]
Logvinenko, N.V., Orlova, L.V. (1987). Occurrence and transformation of terrigenous rocks on the continent and in the ocean. Leningrad: Nedra. [in Russian]
Lukin, A.Y. (1977). Formation and secondary alterations of Carboniferous sediments within Dnieper-Donets depression. Moscow: Nedra. [in Russian]
Millot, J. (1968). Shale geology. Leningrad: Nedra. [in Russian]
Nadeau, P.H., Bjorkum, P.A., Walderhaug, O. (2005). Petroleum system analysis: Impact of shale diagenesis on reservoir fluid pressure, hydrocarbon migration, and biodegradation risks. Geological Society London Petroleum Geology Conference, Series 6, 1267-1274. http://dx.doi.org/10.1144/006126
Strahov, N.M. (1960). Basics of lithogenesis. Vol. 1. Moscow: PublisherAN USSR. [in Russian]
Vassoyevich, N.B., Librovich, V.L., Logvinenko, N.V., Marchenko, V.I. (1983). Lithology handbook. Moscow: Nedra. [in Russian]
Yapaskurt, O.V. (1994). Multi-stage analysis of lithogenesis. Moscow: Publisher MGU. [in Russian]
Yeremeiev, V.V., Osipov, V.I., Sokolov, V.N. (2001). Shale seals of oil and gas fields. Moscow: Nauka. [in Russian]
Zarytskiy, O.P., Zinenko, I.I., Lyzanets, A.V., Benko, V.M. (2007). Patent of Ukraine 21316. Kyiv:Ministry of Education and Science of Ukraine. StateDepartmentofIntellectualProperty. [in Ukrainian]
Zhus, I.D., Bahtin, V.V. (1979). Lithogenetic transformations in the abnormally pressured zones. Moscow: Nauka. [in Russian]
Downloads
Published
Issue
Section
License
Copyright (c) 2023 Visnyk of Taras Shevchenko National University of Kyiv. Geology
This work is licensed under a Creative Commons Attribution 4.0 International License.
Read the policy here: https://geology.bulletin.knu.ua/licensing
