OIL BED WORKING METHOD Russian patent published in 1995 - IPC

FIELD: oil winding and oil processing industry. SUBSTANCE: method involves pumping working agent through pressure wells; withdrawing oil through producing wells; separating casing-head gas from oil and burning it. Casing-head gas is burnt in synthesized oxidizer containing the mixture of oxygen and recycled casing-head gas combustion products, which contains carbonic acid gas and water steam. Stoichiometric ratio between casing-head gas combustible ingredients and oxidizer oxygen is maintained by regulating the part of recycled combustion products in accordance with part of carbonic acid gas in casing-head gas. Combustion products in the form of carbonic acid or carbonized water are pumped into pressure wells as working fluid. EFFECT: increased efficiency. 2 cl, 1 dwg