Petrunchak I. The oil and gas companies' economic mechanism of hydrocarbons deposits development at the late stage of operation

The thesis investigates factors, characteristics and values that determine the effectiveness of redevelopment of depleted oil fields projects. Existing methods for improved oil recovery and intensification of oil are systematized and the analysis of their cost-effectiveness in terms of oil and gas fields in Ukraine is provided. It was determined that in addition to increasing explored reserves and their development, an independent significant reserve of hydrocarbons is residual oil and condensate fields that have long been exploited. Analysis of low flow rate wells reserves is provided and methodological approach to define the limits and economic feasibility of further exploitation improved. It is proved that the primary measures to reform the pricing mechanism for oil and gas should be use of the proposed operating costs regulations and investment component in the formula for calculating the price of hydrocarbon resources for a specific oil and gas fields and deposits. A methodical approach is suggested to define the subsoil fee for oil fields and deposits by means of differentiating factors based on depth of deposits, products watery and water permeability of productive bed. An economic mechanism is designed for the residual hydrocarbon reserves development by oil and gas enterprises.