The Study of the Deep Structure and Prospects of Oil and Gas Potential of the Southern Part of the Guryev Arch of the South-Eastern Side of the Caspian Basin by Method GPTS

What is it about?

Modern concepts of the structure of the Earth’s crust and mantle are based mainly on the results of seismic tomography. In recent years, other approaches to investigating the Earth’s interior have also been gaining traction—most notably, the analysis of the planet’s electromagnetic radiation. All measurement and interpretation techniques rest on the premise that acoustic and electromagnetic emissions reflect the dynamic state of the geological medium and can convey information about it. In passive methods—both electromagnetic and seismic—no artificial probing signal is generated. Field surveys that employ passive‐sounding techniques are environmentally harmless.

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Photo by Zach Theo on Unsplash

Photo by Zach Theo on Unsplash

Why is it important?

A search was made for suprasalt and subsalt formations of oil. Received models of the deep structure (speed and geological) to a depth of 60 km. Density boundaries have been delineated within the sedimentary succession (the top of the crystalline basement) and in the upper mantle at the Mohorovičić discontinuity (Moho); the “roots” of major fault dislocations have also been traced. For the first time in this area, a deep-seated thrust with an amplitude of 8 km has been recorded at the Moho surface. Zones of rock rarefaction in the crust-mantle transition layer at depths exceeding 20 km have been identified—likely reservoirs for the accumulation of hydrocarbon fluids—and the pathways of their migration along faults and rarefied zones have been mapped.