scholarly journals Geochemical conditions of oil and gas potential of the South Caspian basin on the basis of pyrolytic studies of mud volcanoes

2019 ◽  
Vol 98 ◽  
pp. 02007
Author(s):  
Rustam Mustaev ◽  
Javidan Ismailov ◽  
Uliana Serikova
Keyword(s):  
Organic Matter ◽  
Oil And Gas ◽  
Caspian Basin ◽  
Thermal Maturity ◽  
Mud Volcanoes ◽  
The South ◽  
South Caspian Basin ◽  
Geochemical Conditions ◽  
Geochemical Studies ◽  
Gas Potential

This paper provides the results of geochemical studies with products of mud volcanoes conducted for a purpose of evaluating the generative potential of the South-Caspian basin. The kerogen types have been identified for different stratigraphic intervals and stages of the organic matter (OM) thermal maturity have been determined. A correlation has been established between the generative potential and the basin deposition and subsidence rate.

Isotope geochemistry of oils from fields and mud volcanoes in the South Caspian Basin, Azerbaijan

2001 ◽  
Vol 7 (2) ◽  
pp. 201-209 ◽  
Author(s):  
Ibragim S. Guliyev ◽  
Akper A. Feizulayev ◽  
Dadash A. Huseynov
Keyword(s):  
Isotope Geochemistry ◽  
Caspian Basin ◽  
Mud Volcanoes ◽  
The South ◽  
South Caspian Basin

scholarly journals Organic matter in rock–water systems of petroliferous basins: interrelationships (a case study: South Caspian Basin)

2019 ◽  
Vol 74 ◽  
pp. 74
Author(s):  
Akper A. Feyzullayev ◽  
Ian Lerche
Keyword(s):  
Organic Matter ◽  
Sedimentary Cover ◽  
Water System ◽  
Underground Water ◽  
Depth Interval ◽  
Caspian Basin ◽  
Hydrocarbon Generation ◽  
Mud Volcanoes ◽  
South Caspian Basin ◽  
And Migration

Generalizations and analyses are given of the data accumulated to date on the content of Organic Matter (OM) in formation waters of various stratigraphic complexes, as well as of mud volcanoes, and the correlation with OM in South Caspian Basin (SCB) sedimentary rocks. Results are based on about 300 analyses of formation waters and waters of mud volcanoes, as well as on more than 400 analyses of the content of OM in rocks (outcrops and wells from both onshore and offshore petroleum fields of the SCB). The stratigraphic interval covers the period from the Lower Pliocene to the Jurassic, and the depth interval from 73 m to 6043 m. In these intervals, the values of Dissolved Organic Matter (DOM) in reservoir waters vary from 4.1 mg/L to 271.2 mg/L, averaging (219 analyses) 48.9 mg/L. A good correlation has been established between the values of DOM and OM in rocks. Paleogene and Jurassic rocks have the highest correlations. DOM varies with depth with an increase in value from a depth of about 3.3 km, likely due to catagenetic transformation of OM into hydrocarbons in the rock–water system. The highest values of DOM are for waters with mineralization less than 50 g/L. Mud volcano waters are characterized by low levels of DOM and low mineralization, likely due to the condensate nature. The results of the studies show that underground water, as one of the components of a single rock–water system of the Earth’s sedimentary cover, together with the rocks, participates in the processes of hydrocarbon generation and migration.

Earthquakes, Mud Volcano Eruptions, and Fracture Formation Hazards in the South Caspian Basin: Statistical Inferences from the Historical Record

1996 ◽  
Vol 14 (6) ◽  
pp. 585-606 ◽  
Author(s):  
E. Bagirov ◽  
R. Nadirov ◽  
I. Lerche
Keyword(s):  
Volcanic Eruptions ◽  
Mud Volcano ◽  
Quality Data ◽  
Caspian Basin ◽  
Mud Volcanoes ◽  
The South ◽  
South Caspian Basin ◽  
Fracture Formation ◽  
Significant Damage

Based on data since 1832 from 533 earthquakes and 220 mud volcanoes in the Azerbaijan region, an analysis is given of: (a) the occurrence likelihood of weak, medium and strong earthquakes, the latter capable of causing significant damage; (b) the likely directions from which damaging earthquake waves can arrive; (c) the likelihood of a mud volcano hazard (ejected breccia and/or mud flows and/or flame ignition) in temporal association with an earthquake; and (d) the likelihood of fracture formation associated with mud volcanic eruptions. The Chirag region of the South Caspian Basin is used to illustrate application of the methods because of the potential significance of the region for hydrocarbon exploration involving rigs susceptible to the above hazards. The statistical information would indicate that the occurrence likelihood for a 7-balls or higher damaging earthquake in the Chirag region corresponds to an average waiting time of around 5,000 yrs; a medium strength (6-balls or higher) earthquake should occur, on average, in the region every 1,200 yrs, while a weak earthquake (5-balls or higher) is likely to occur, on average, every 110 years. The most likely direction of longitudinal seismic waves from earthquakes of sufficient strength to cause significant damage in the Chirag region, be the earthquake epicenter in the region or at a remote focus, is roughly east and west, with a slight prevalence for a westward origin. There is some correlation between earthquake actively and mud volcano activity, suggesting that mud volcanoes occur between zero to five years prior to earthquakes. But the correlation is not sharply delineated due to the paucity and quality of currently available data. For surface fractures, associated with mud volcano eruptions, which can be meters wide and can stretch for a kilometer or more, only volcanoes with five or more eruptions were used to estimate the likelihood of fracture occurrence, yielding an average of about 30% chance of occurrence. The low number and low quality of data did not permit any more detailed investigation of fracture parameters – such as average width, length or offset. In view of the potential hazards for oil rigs in the offshore South Caspian Basin, it would seem that organized, high quality, data collection both offshore and onshore should be rapidly undertaken as a vital adjunct to drilling operations in order to sharpen the assessments of risk factors presented here.

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