ANALYSIS OF HYDROCARBON GASES OF MUD VOLCANOES OF THE LOWER KURA TROUGH

Based on the detailed analysis of the existing geological-geophysical material, the distribution area of the mud volcanoes developed in the depression, and the geochemical characteristics of their eruption products were studied. The aim is to determine the gases contained in the wastes thrown by volcanoes onto the earth's surface and to study of distribution along the territory. For this reason, the capacity of methane gas, heavy hydrocarbons, nitrogen and carbon dioxide of erupted materials on the surface was studied. Based on the results obtained during the analysis, the composition of the gases of the mud volcanoes located in the depression consists mostly of methane. The content of methane in the eruptive materials of Agzibir volcano varies from 86.3% to 98.88% (Kalamaddin mud volcano). The average mark of methane gas ranges from 86.6% (Akhtarmaardi) to 91.3% (Harami). In addition, maps were drawn up to determine the distribution of gases in the eruptive materials along the study area. Besides, a map of the location of the Galmaz mud volcano, a geological profile passing through the mud volcano was created. The content of gases emitted into the atmosphere was determined based on the analysis of mud volcano eruptive wastes in the south-west and north-east parts of the Galmaz field. As a result of geological-geophysical studies was determined that the chemical composition of the eruption materials of the Galmaz mud volcano is different. The analysis show that, most of the gases emitted from the volcano to the atmosphere consist of methane (CH4) gas. Content of it is up to 97.42% and more. The content of other gases is relatively small, so heavy hydrocarbons is 0.04%, nitrogen is 0.48%, CO2 is 2.06%. The individual deposits related with mud volcano are mainly massive, structural and tectonically screened types. However, hydrocarbons accumulated within traps are formed oil-gas and gas individual deposits. Keywords: Galmaz field, mud volcano eruption, methane gas content, content of nitrogen, carbon dioxide, crushing zones, heavy hydrocarbons, oil and gas accumulations.