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The use of passive seismic exploration to identify oil-bearing reservoirs in the Udmurt Republic, Russia

Likhacheva Olga, Kashin Gleb, Mironychev Vadim

Journal of Geotechnology and Energy

2021

Vol. 38, no. 1

35--40

The level of oil production in the Udmurt Republic is currently experiencing a declining trend due to the depletion of large and medium-sized oil fields that have been in operation for a long time. Therefore, the main challenge in this region is to stabilize & increase oil extraction by means of exploring more promising oil fields of a smaller size. However, some issues cause difficulties. Firstly, 2D and 3D seismic data often do not provide the reliable mapping of small fields. Secondly, geological prospecting and exploration, along with exploratory drilling, make these works costly. Furthermore, the estimation of the reserves for such deposits often contains errors. Passive seismic exploration is proposed as a solution to these problems, reducing exploratory and exploitation drilling costs, with the time required for geological exploration also being diminished.

Application of passive seismic to shallow geological structures in urban areas

Mendecki J.M., Glazer M, Mycka M

Studia Quaternaria

2014

Vol. 31, Nr 2

115--122

To study the shallow geological structure the Refraction Microtremor (ReMi) method was applied. This technique uses seismic noise analysis where a source of this small vibrations is the human activity e.g.: traffic, production, factories. The surveys were carried out in selected urban areas in the region of the Upper Silesian Industrial District: Sosnowiec–Pogoń , Chorzów–Chorzów Stary and Bytom–Karb. Each area is characterized by the presence of nearby roads with a very high traffic. The results of passive seismic (ReMi) were confronted with data obtained using Multichannel Analysis of Surface Waves (MASW) and resistivity imaging (RI). Seismic surveys were performed by apparatus PASI with 24 channels using geophones of 4.5Hz. The results showed that passive seismic can be satisfactorily used in such urban conditions. The shallow geological structure interpreted by seismic methods have been well-correlated with resistivity studies.