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A downhole gas-liquid separation device suitable for shale oil pumping unit oil production system

A technology of oil production system and pumping unit, which is applied in the direction of production fluid, earthwork drilling and production, wellbore/well parts, etc., which can solve the problems of increased demand, achieve the effects of reducing impact, avoiding efficiency reduction, and reducing occupied space

Active Publication Date: 2022-07-19
NORTHEAST GASOLINEEUM UNIV
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  • Application Information

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Problems solved by technology

At present, there are few reports on the downhole degassing cyclone separation device that can work in conjunction with the pumping unit, and the demand is gradually increasing. Therefore, it is necessary to develop a downhole degassing cyclone separation device that can work in conjunction with the pumping unit

Method used

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  • A downhole gas-liquid separation device suitable for shale oil pumping unit oil production system
  • A downhole gas-liquid separation device suitable for shale oil pumping unit oil production system
  • A downhole gas-liquid separation device suitable for shale oil pumping unit oil production system

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Embodiment Construction

[0040] The present invention will be further described below in conjunction with the accompanying drawings:

[0041] This type is suitable for downhole gas-liquid separation device of shale oil pumping unit oil production system. Cone, base.

[0042] The two ends of the liquid flow collection cover are concentric overlapping structures of cylinders of different diameters, and there is a bridge channel inside to allow the gas phase to be discharged to the annulus area of ​​the oil jacket. The connection thread of the flow dividing cylinder and the connection thread of the gas guide pipe, the connection thread of the packer is connected with the packer through the thread in the downhole, so that the whole device runs under the protection of the packer, and the degassing bridge channel is inside the liquid flow collection cover The gas phase can be guided from the side to be discharged to the annular area of ​​the oil jacket. The connection thread of the liquid flow dividing cyl...

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Abstract

The utility model relates to a downhole gas-liquid separation device suitable for a shale oil pumping unit oil production system. It mainly solves the problem of low efficiency of pumping units under gas-bearing conditions in the process of shale oil production. It is characterized in that: the downhole gas-liquid separation device has a built-in liquid flow collection cover, an air guide pipe, a liquid flow separation cylinder, a spiral flow channel, a cyclone shell, a deposition chamber shell, a cyclone protective cover, an inverted cone and a base; The liquid enters from the liquid inlet, the separated gas is discharged to the outside of the oil jacket annulus, and the liquid phase enters the deposition chamber and is lifted to the ground by the pumping unit. The gas-liquid separation device can eliminate the influence caused by a large amount of gas phase being lifted to the ground during the production process of shale oil, improve the working efficiency of the pumping unit, and avoid abnormal wear caused by the long-term gas phase production of the pumping unit.

Description

technical field [0001] The invention relates to a downhole gas-liquid separation device suitable for a pumping unit oil production system in the process of exploiting shale oil in an oil field. Background technique [0002] With the continuous maturity of shale oil extraction technology and the gradual increase in production capacity, the problems faced also increase, among which the problem of associated gas has the greatest impact on the process of shale oil extraction. In the process of shale oil production, pumping units are commonly used to lift the produced fluid to the ground, and the associated gas will cause the gas to be extracted by the pumping unit before the produced fluid, thereby reducing the production capacity and accelerating the wear of the pumping unit. At present, there are few reports on the downhole degassing cyclone separation device that can work with the pumping unit, and the demand is gradually increasing. Therefore, it is necessary to develop the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/38
CPCE21B43/38
Inventor 邢雷赵立新蒋明虎赵嵘广李金煜刘海龙
Owner NORTHEAST GASOLINEEUM UNIV
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