Deep-Water Traction Current in Upper Carboniferous Stratigraphic Succession of Moscow Stage, Southeastern Pre-Caspian Basin

Yajun Zhang, Hansong Dai, Huizhen Zhang and Ling Guo ()
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Yajun Zhang: Research Institute of Petroleum Exploration and Development-Northwest, PetroChina, Lanzhou 730020, China
Hansong Dai: Research Institute of Petroleum Exploration and Development-Northwest, PetroChina, Lanzhou 730020, China
Huizhen Zhang: Research Institute of Petroleum Exploration and Development-Northwest, PetroChina, Lanzhou 730020, China
Ling Guo: State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi’an 710069, China

Energies, 2024, vol. 17, issue 8, 1-14

Abstract: Deep-water currents are geographically widespread and represent important tight-oil and -gas reservoirs. However, identifying deep-water traction current deposits is challenging work. The main objectives of this research were to identify a new type of reservoir deposited in deep-water traction currents. Based on high-quality 3D seismic data and drilling data (logging data and lithology), the sedimentary characteristics of the MKT Formation of the upper Carboniferous Moscow Stage, southeastern Pre-Caspian Basin, were determined. The MKT Formation of the upper Carboniferous Moscow Stage is mainly composed of mudstone and some thin-bedded siltstone. This formation contains a series of “reversal foresets” dipping west (early paleo–high provenance during the depositional stage). Based on the seismic data and drilling logging data, lithology, paleo-geographic position, seismic facies, and form and scale, deep-water traction current deposits were identified in the M block. The discovery of deep-water traction current deposits in the M block not only provides a precious example for research on Paleozoic deep-water traction current deposits, and enriches our knowledge of basin sedimentary types, but also proves that the M block had complex fluid features and unveils a new domain for petroleum exploration in the basin.

Keywords: siliciclastic depositional environment; hydrocarbon reservoirs; reversal foreset; deep-water traction current; Pre-Caspian Basin (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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