Resource potential of gas-saturated part of the Orenburg oil and gas condensate field at the final stages of development
Due to the decline in gas and condensate production at the Orenburg oil and gas condensate field, the priority area of activity of Gazprom PJSC and Gazprom Dobycha Orenburg LLC is the reproduction of the mineral resource base and the achievement of maximum component recovery factors to provide the Orenburg gas and chemical complex. The solution to this problem is directly related to the involvement of the unique reserves of hard-to-recover oil (matrix oil, high-molecular raw materials), confined to the gas-saturated part of the Orenburg field, in the production and deep complex processing. Hard-to-recover oil has a variable composition – from high-bituminous oil in fractured-porous and porous low-permeability reservoirs to liquid traditional oil in porous and large-pore permeable reservoirs. This paper analyzes the results of estimating the reserves of matrix oil, the predicted resources of associated components of matrix oil (metals) and the retained gas reserves, which are not included in the assessment of reserves.