The lithophysical and collector characteristics of mesozoic-cenozoic deposits of north-western part of the Caspian depression
| Autor: | Vagif Gurbanov, Latif Sultanov, Samir Valiyev, Melahet Babayeva |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Perm Journal of Petroleum and Mining Engineering, Vol 14, Iss 17, Pp 5-15 (2015) |
| ISSN: | 2305-1140 2224-9923 |
| Popis: | In order to find oil and gas sources in deep reservoirs of Azerbaijan geological and geophysical research allowing determination scientific criteria that could represent basis for future research were performed. It was determined that major oil and gas fields are related to South Caspian and Kura basins that were intensively submerging during Meso-Cenozoic era. At the moment there are no doubts about high potential of reservoirs in central zones and deep layers but quantitative analysis was not done yet. It is known that exploration, production and evaluation of oil and gas capacity of fields depend heavily on gathered information about petrophysical parameters of layers presented in the geological cross-section. From this point of view evaluation should be performed in gas and oil regions of South Caspian basin where Mesozoic and Cenozoic deposits are spread widely. Different geological, geophysical and physical aspects affecting reservoir capacity of oil, gas and gas-condensate fields in mentioned regions were studied. Conducted research highlighted Pliocene deposits that have small thickness of 100 to 200 meters along anticline line Kurdahany-Shakh-Deniz in North-West part of the region. Thickness of the deposits increase towards Gum-Adasy and Shakh-Deniz up to 3600 and 6000 m respectively. Thickness of the deposits within syncline folds is up to 3000 m North-West and 10000 m in the Shakh-Deniz region. Thus, having lack of information about reservoir properties of strata it is impossible to evaluate hydrocarbon and production capacity as well as to change research direction. In addition to the geological and geophysical research performed in that region lithological, petrographical and reservoir properties were studied to determine change in carbon saturation, porosity, permeability, density, granular composition and acoustic waves of the strata. In order to show reservoir properties of the field, maximal, minimal and average physical properties limitations of rocks a table was created. The relation between reservoir properties, depth, and their relation between other physical factors is analyzed. |
| Databáze: | OpenAIRE |
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