METHOD OF OIL PRODUCTION Russian patent published in 2001 - IPC

FIELD: oil and gas industry, particularly, methods of oil production. SUBSTANCE: method includes installation of pumps with packers or without packets in zone of dynamic level of well fluid; pumping of fluid through tubings to wellhead into oil gathering system. Radial holes are made in tubing above pump. Connected to pump bottom is tubing string up to designed level including formation roof. Connected to tubing string end is jet pump for connection of rarefaction zone with well volume under pump. Poured into tubing string is oil up to wellhead, and direct or back feed of pump is engaged with circular pumping of fluid through tubing string and their annular space through jet pump and building upon pressure differential conditions in formation and pumping out of fluid from formation. EFFECT: provided pumping out of oil from any depth with high pump capacity and low pump required power. 2 cl, 2 dwg