ABSTRACT
Most gas and gas-condensate fields in Ukraine are at the final stage of their development. Still they contain significant remaining deposits of gas and condensate, the production of which under the conditions of formation pressure depletion is a very difficult problem. The methods of remaining hydrocarbons recovery from depleted fields are characterized. Concerning the depleted gas drive fields it is suggested the analytical dependences of final formation pressure and gas recovery factor on features of formation bottom-hole zone and technological parameters of well operations and gas gathering system which enable to ground the most effective methods of gas recovery enhancement for certain fields. The relations are tested for the gas deposit of horizon ND-4 of the Oparsk gas field.
