PROCESS OF PRODUCTION OF HYDROCARBONS WITH USE OF INVERSE PRODUCTIVE WELL Russian patent published in 2001 - IPC

FIELD: extraction of hydrocarbons from underground pool. SUBSTANCE: in agreement with invention steam is pumped into pool to heat hydrocarbons and they are recovered through productive well that has inverse shaft entering pool and terminating near vertex of this pool. Inverse well is built up within limits of pool. It includes vertical section coming from surface to vertex of pool, horizontal section in the form of entity with non-inverse section and entering pool, tail section bent upwards in the form of entity with horizontal section, going upwards and terminating near vertex of pool. Steam to heat up hydrocarbons is pumped into specified pool for their extraction. Well for production of hydrocarbons has vertical section to depth adjacent to vertex of pool, horizontal section in the form of entity with vertical section entering pool and tail section bent upwards in the form of entity with horizontal section terminating near vertex of pool. EFFECT: enhanced efficiency of recovery in comparison with vertical and horizontal productive wells. 16 cl, 4 dwg