The paper aims to describe Composition and characteristics in hydrocarbons, oil and gas fields. By using descriptive method for primary model, synthesis methods and process analysis and analysis of difficulties and discussion, The study of this problem point that No less active influence on the properties and composition of oil, including their metallogeny, was also exerted by inversion processes. They manifested themselves especially brightly in the Varandey-Adzva zone. Therefore, when it comes to the unfavorable environmental situation in these areas, then a significant contribution to its formation belongs to the extracted and utilized oil with PTE.