METHOD FOR INTER-WELL TRANSIT OF LIQUID Russian patent published in 2006 - IPC E21B43/20 

FIELD: oil industry, possible use during extraction of water-flooded oil pool and during operation of system for maintaining bed pressure.

SUBSTANCE: method includes intake of oil from the bed, extraction of bed water through water intake wells and forcing of bed water through force wells into the bed. In accordance to invention, inter-well transit of liquid is performed when extracted oil is watery beyond profitability - water saturation of about 98-99,9%. As water-intake wells, former product wells are used. Intake of bed water is performed from watery productive bed, forcing of bed water through force wells is performed into bed with non-extracted oil deposits. Intake of oil from bed is performed through water-intake well. In water-intake well oil and water are separated. Water is drained through tubing string and is fed via exhaust or water main line into force wells. Oil is accumulated in inter-tubular space of well. after filling inter-tubular space with oil, well is stopped, circulation of liquid in well is organized, oil from inter-tubular space is forced into oil line by reversed water flow and well operation is launched. Time of filling of inter-tubular space is determined from analytical expression.

EFFECT: increased efficiency of operations.

1 ex, 3 cl