Water stabilizing device capable of degassing, desanding and stabilizing produced liquid water content for production pump for injection-production in same well

Abstract

The invention relates to a water stabilizing device capable of degassing, desanding and stabilizing the produced liquid water content for a production pump for injection-production in the same well. The water stabilizing device is mainly used for solving the problem that a sucking opening of an existing production pump for injection-production in the same well is provided with a plurality of liquid inlet holes in the same plane, thus when the liquid level of an oil sleeve annulus is changed, the wellhead water content is fluctuated significantly. The water stabilizing device is characterized in that the upper part of a water stabilizing device center pipe (18) is connected with a water stabilizing device top cover (19); a plurality of sets of water stabilizing device settling cups (21) areconnected to the position, on the lower part of the water stabilizing device top cover, of the water stabilizing device center pipe (18), and a water stabilizing device settling cup liquid inlet gap(20) is reserved between the upper part of the water stabilizing device settling cup on the uppermost layer and the water stabilizing device top cover (19); a plurality of center pipe liquid inlet holes (16) are formed in the longitudinal direction of a pipe body of the water stabilizing device center pipe (18); and a communicating hole and a sand discharging hole (22) are formed in the lower partof each water stabilizing device settling cup (21). The water stabilizing device is provided with the multiple center pipe liquid inlet holes in the longitudinal direction, it can be ensured that oiland water simultaneously enter the suction opening of the production pump, and the effect of stabilizing the produced liquid water content is achieved.

Description

technical field [0001] The invention relates to the technical field of oil production engineering in oilfields, in particular to a water stabilizer for an injection-production production pump in the same well that can degas, desand and stabilize the water content of production fluid. Background technique [0002] In the same well injection and production field of oil production engineering, the same well injection and production technology is to separate the oil, gas and water mixture produced in the production layer through the downhole multi-cup iso-flow oil-water separator, and the separated water is injected into the The pump is injected into the injection layer, and the separated oil-rich mixture enters the production pump through the bridge channel on the bridge double-stage water shutoff packer, and is finally lifted to the surface. Mining and note. This process reduces the water content of the oil well output fluid in the oil field, prolongs the oil well production ...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the existing same-well injection-production production pump suction port in the background technology, there are several liquid inlet holes on the same plane, so when the liquid level of the oil casing annulus changes, the problem of the production pump suction port The oil-water interface will also change accordingly, which will lead to the problem of large fluctuations in the water cut of the wellhead. To provide a water stabilizer for the same well injection and production pump, which can degas, desand and stabilize the water cut of the produced fluid. The injection-production production pump of the same well uses a water stabilizer capable of degassing, desanding and stabilizing the water content of the produced fluid. When moving, it can also ensure that oil and water enter the suction port of the production pump at the same time, and play a role in stabilizing the water content of the production fluid

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