METHOD FOR INTER-WELL FLUID PUMPING Russian patent published in 2014 - IPC E21B43/20 E21B43/12 

FIELD: oil and gas industry.

SUBSTANCE: method includes packer installation above the production well bed, oil-water emulsion extraction from below-packer space by pump, descended at tube string, emulsion separation to oil and water in down-hole conditions, oil extraction from top part of above-packer annular space to oil pipeline, extraction of formation water and its pumping via water pipeline through injection wells into oil bed with undeveloped oil resources. Pump operation is provided in constant mode, oil-water emulsion is supplied through radial holes in tube string into above-packer annular space, where oil-water emulsion is separated. Water is extracted from above-packer annular space via subsidiary tube, the inlet of which is located below the level of water-oil contact, and its outlet is connected to the water pipeline fitted with flow metre. Oil extraction is additionally performed from tube string into oil pipeline, which is fitted with flow regulator and is connected to the subsidiary tube via bypass line, connected to the oil pipeline after flow regulator for water discharging into it at water pipeline repair works.

EFFECT: extension of scope of application due to the use of former production wells as well as actual watered production wells as water supply wells; efficiency increase due to elimination of pump station stops for pump station switching to oil displacement mode and for the time of water pipeline repair works.

1 ex, 1 dwg