Geology, geography and global energy

Scientific and Technical Journal

Possible types of hydrocarbon traps in the fold-orogenic zones (on an example of North-west Caucasus)

2015. №3, pp. 9-18

Popkov Vasiliy I. - D. Sc. in Geology and Mineralogy Professor, Kuban State University, 149 Stavropolskaya st., Krasnodar, 350040, Russian Federation, geoskubsu@mail.ru

Popkov Ivan V. - Post-graduate student, Kuban State University, 149 Stavropolskaya st., Krasnodar, 350040, Russian Federation, geoskubsu@mail.ru

A study of the morphology of tectonic dislocations North-west Caucasus offered consistent pattern of possible oil and gas traps. We obtained the following main results. Formation of structure-fold orogenic structures North-west Caucasus was controlled primarily tangential compression process. This is supported by specific morphological features of tectonic dislocation, as well as the general organization structure of the region. Accordingly, the main types of dislocation, defining the regional structure of the territory are thrusts. To the front of the thrust confined asymmetric anticline, genetically related to them. These thrusts are primary and secondary folds. Steep wings thrust anticlines in the trace output line fault plane to the surface (or a certain stratigraphic level), while the gentle wings uplifts indicate the direction of tilt thrusts. The regularities flattening thrust with depth with simultaneous displacement of the arches in the thrust anticlines with decreasing amplitude until the complete dissolution of the folds. The value of planned displacement vaults uplift of deeper horizons can reach many hundreds of meters, which has a very important practical significance for the design of deep wells. The most typical types and morphological features of potential oil and gas traps, patterns of their spatial distribution and formation. Based on the results offered new methodological approaches to conduct exploration work in relation to the study area. Outlined promising new areas and possible search object oil and gas accumulations.

Key words: складки, надвиги, тектонические напряжения, нефть и газ, folds, thrusts, tectonic stress, oil and gas

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