FIELD: technology for cyclic forcing of liquid into oil-bearing bed in case of water-flooding or forcing of various reagents into it.
SUBSTANCE: device contains packer, column of pipes with suction valve, a pump. In accordance to invention pump is made in form of sucker-rod down-pump, which is mounted above the suction valve in composition of pipes column, additionally equipped with channel, through which above-piston hollow of pump is connected to oil-bearing bed and with possible pressurization thereof on well mouth with rods of sucker-rod pump. Sub-piston hollow of pump can be connected to water-bearing bed in open position of suction valve. Column of pump rods has weight sensor, mounted on well mouth with possible disabling and enabling of pump motor depending on filling of behind-column space with liquid from water-bearing bed.
EFFECT: simplification of device construction at the same time increasing its operation efficiency and decreasing consumed energy costs.
2 dwg
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