METHOD OF DEVELOPMENT OF DEPLETED DEPOSITS OF NATURAL HYDROCARBONS Russian patent published in 2014 - IPC E21B43/16 

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to oil and gas production, particularly, to supplementary development of depleted deposits of natural hydrocarbons. In compliance with proposed invention, this method comprises preparation of deposit for supplementary development ay least one injection well is used to inject at least one working agent including carbon dioxide for production of hydrogen, oxygen and methane homologues on the basis of catalytic reaction and re-extraction of natural hydrocarbons. At least one working agent including carbon dioxide is injected unless required bed pressure in the deposit is reached. At least one production well is created and/or used. Bed fluids re extracted after preset bed pressure is reached. Water, hydrocarbons, hydrogen, oxygen and carbon dioxide are isolated from extracted bed fluids. Extracted water and unreacted carbon dioxide is directed in at least one injection well for repeated injection into deposit.

EFFECT: supplementary extraction owing to the use of man-made carbon dioxide.

11 cl, 2 dwg, 1 ex