Prospects for exploration of the non-anticlinal traps of Hovsan shallow water area by geophysical methods

Abstract

The paper analyzes the complex geophysical (seismic, gravimetric) and downhole geophysical survey (DGS) of the SW part of the Hovsan Shallow Water area, specifying the lithofacies composition of Pliocene sediments, predicting oil and gas potential, identifying promising areas in the Turkan and Gala areas related to non-anticlinal traps, substantiating the directions of search and exploration work for these types of traps, predicting favorable conditions for hydrocarbon accumulation, and predicting oil and gas potential. At the Hovsan oil and gas field, research work was carried out on the temporal sections of the seismic profile of two common depth points developed in 2004. Based on the obtained amplitude and energy diagrams, a comparative analysis of anomalies in the zones of minimum values of dynamic parameters of tested and reflected waves at oil and gas facilities of profiles No. 030808 and 030908 was carried out. Taking into account the complex topography of the area, an observation system was chosen in which the field on the Hovsan area is exposed from 2 directions (Shah dili and Gala field island), making it possible to detect trap type anomalies in the same places by radiating the area from different directions. The main purpose of the complex geophysical studies carried out on subjects No. 091-96 and 165-2000 was the prediction and analysis of oil and gas deposits at the Hovsan-Deniz field as a result of the combined use of the seismic exploration method with refracted and reflected waves with high-precision gravimetrical exploration, and determination of formation boundaries in plan and the depth of the section based on trap type anomalies obtained in geophysical areas.