Abstract:

This paper provides a technical and economic feasibility study for creating a modern facility for the production of liquefied petroleum gases (LPG) and liquefied natural gas (LNG) based on the capacities of the Minnibayevsky Gas Processing Plant of PJSC Tatneft. The relevance of the study is determined by the need for deep processing of associated petroleum gas (APG), product diversification and increased economic efficiency amid tightening environmental regulations and the development of hard-to-recover reserves. The technological feasibility of the project based on the reconstruction of the existing cryogenic unit has been established, which makes it possible to reduce capital costs by 30–50% compared to greenfield construction; a mixed refrigerant cycle (SMR) has been substantiated as the optimal liquefaction technology. The economic assessment showed a calculated payback period of 5–8 years for the production of high-margin products (LNG for gas motor fuel, LPG, commercial helium). A significant environmental effect has been determined: an almost complete cessation of APG flaring and a reduction in pollutant emissions when using LNG as a cleaner fuel

Keywords: associated petroleum gas (APG); liquefied natural gas (LNG); liquefied petroleum gases (LPG); Minnibayevsky gas processing plant; PJSC Tatneft; deep processing; reconstruction; feasibility study; small-scale LNG.