METHOD FOR EXTRACTING DEPOSITS OF VISCOUS OILS AND BITUMENS Russian patent published in 2005 - IPC

FIELD: oil and gas extractive industry.

SUBSTANCE: method includes drilling two-mouth horizontal well, fixing thereof by operation column, dragged from one mouth along shaft to another mouth together with packers for mounting the latter in ceiling of productive well, raising and feeding oil to output line on one of well mouths. Mouth portions of operation column are interconnected by ground-based portion in form of arced pipeline with identical inner diameter with forming of closed channel. Said ground-based portion of the latter is fixed on support frame of driving assembly. For it an additional column is placed in operation column, performing a function of tubing pipe in underground portion and having perforation channels for connection to productive layer. In hollow of additional column at even spaces from each other a system of cylindrical elements is mounted, interconnected via force tractions with forming of closed traction system. Portions of tubing column underground portion from well mouths to limits of operation column perforation portion together with said cylindrical elements form piston pump couples. During operation forced displacement of cylindrical elements system by driving assembly is performed with continuous consecutive pressing of oil from tubing column via above-mentioned piston pump couples.

EFFECT: higher efficiency.

5 cl, 1 ex, 3 dwg