Browse

The transformation of hydrothermal processes in sediments is accompanied by the transformation of organic matter. Work presents an analysis of the change in the composition of the bitumoid of domanic sediments of the Volga-Ural oil and gas province with thermal effects on the specimen of the kerogen containing formation. The laboratory modelling of the katagenesis process on domanic rock sample was conducted in autoclave at a pressure of 50 atm, at a temperature range of 200-350 °C with the addition of water, and ...

The sediments of the of the Middle Franconian stage of the Upper Devonian along the cut contain the maximum amount of dispersed organic matter. This rock complex is the main oil producing stratum for most oil and gas fields on the territory of the Volga-Ural basin. The Semiluks horizon is represented by three types of sections: typical of Dominic and transitional ones. In Sargaevian sedimentation occurred under conditions of a shallow, epicontinental, open sea with normal salinity of water. The parameters of kerog...

Today, as a result of the depletion of low- and medium-density oil deposits, the world faces the problem of increasing oil production by involving non-traditional, alternative sources of hydrocarbon raw materials, which include fuel shale. In the area of the Volga-Ural oil and gas province, tight shale hydrocarbons reserves are located in domanic sediments. Quantity and spatial distribution of organic matter of domanic species remains underinvestigated. Assessment of oil potential, generation of mobile hydrocarbon...

The deposits of light oil and gas in the Devonian sediments of the "Ansagan" deposit are found. In the deposits of the Famenian stage of the upper Devonian, a gush of gas condensate was obtained. Samples of formation fluid are characterized by low density (0.78 g/cm3). The extracted oil refers to low-tar and paraffin (the content of paraffins is more than 2-3 %). The genetic relationship between oils and organic matter of rocks has been studied. To determine the group composition of bitumoids, the SARA method was ...