TANACHI-MOKTAKONSKY OIL AND GAS ACCUMULATION ZONE ‒ POTENTIAL OBJECT OF COMBINATION OF PRODUCTION AND PROCESSING

Abstract

The relevance of the research is determined by the necessity of reproduction and expansion of oilfields area resource base in the Krasnoyarsk region by involving in the development of oils and condensates of complex chemical composition containing mercaptans, hydrogen sulfide and sulfur. The main aim of the research is to characterize composition and to define the regularities of formation of oil and condensates aromatico-naphtene-methane type in Tanachi-Moktakonsky zone of oil and gas accumulation, located on Bakhtinsky megaledge of the Siberian platform; to develop proposals for preparation of fluids of this zone of oil and gas accumulation before requirements of their transportation through pipeline systems to refinery. Objectives of the research are the deposits of oil and condensate of aromatic-naphthenic-methane composition within the territory of the Bakhtinsky megaledge of the Western part of the Siberian platform. Methods: geomapping of borders of Tanachi-Moktakonsky zone of oil and gas accumulation in sediments tanachinsky (A-I horizon) lower-middle-Cambrian (Є1-2), abakunsky and moktakonsky (A-V, A-VI) of suites of the lower Cambrian (Є1); study of geological conditions and composition and properties of oil and condensate received from these horizons in wells of Tanachinsky, Moktakonsky areas; analysis and generalization of materials on cleaning a hydrogen sulfide- and mercaptans oil and gas condensate on crafts. Results. Although the Bakhtin megaledge has a wide development of aromatic-naphthene-methane oils and condensates containing mercaptans and sulfur, it remains a promising area, since magmatism has had a negative impact on primary deposits of oil and condensate mainly in the sediments of the lower and lower-middle Cambrian. Based on the analysis of drilling materials and composition of the reservoir fluids the Tanachi-Moktakonsky zone of oil and gas accumulation is contoured in sediments of tanachinsky, abakansky and moktakonsky suites of lower-middle and lower Cambrian. A conceptual solution to the problem of using oil and condensate of complex composition is proposed in the framework of the creation here of innovative territorial combination of production and processing of hydrocarbons.

Keywords

• oil
• gas
• condensate
• mercaptans
• sulfur
• traps
• siberian platform
• bakhtinsky megaledge
• combination of production and processing complexes