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A smart plunger for drainage and gas recovery

A technology of drainage and gas production and plunger, applied in pump components, pump control, liquid variable capacity machinery, etc., can solve problems such as difficult lifting, low lifting efficiency, and inability to install buffer devices.

Active Publication Date: 2020-09-29
HARBIN HITTOP TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) It is necessary to install a buffer structure in the downhole pipeline in advance, which is complex in engineering. At the same time, because the position of the buffer structure is fixed, it is impossible to control the height of the plunger lifting liquid
When the plunger falls to the position of the retainer, too much lifting liquid will make the lifting difficult; if the lifting liquid is too little, the lifting efficiency will be low and the downtime will be increased
[0004] (2) Because the buffer device cannot be installed in inclined wells and horizontal wells, the existing plunger can only be used in vertical wells

Method used

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  • A smart plunger for drainage and gas recovery
  • A smart plunger for drainage and gas recovery
  • A smart plunger for drainage and gas recovery

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Experimental program
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Effect test

specific Embodiment approach 1

[0036] Combine below Figure 1-8 Describe this embodiment, a smart plunger for drainage and gas recovery, including a valve 1, a transmission mechanism 2, a motor 3, a power supply 4, a control circuit part 5, a sensor 6, an expansion structure 8, a pipe wall 10, a casing 11, and a mandrel 12 And the connection part 13, the lower end of the shell 11 is provided with a valve 1, the mandrel 12 is arranged in the shell 11, a plurality of connection parts 13 are connected between the shell 11 and the mandrel 12, and air holes 13 are all arranged on the multiple connection parts 13 -1, the mandrel 12 is provided with a motor 3, a power supply 4 and a control circuit part 5, the motor 3 is connected to the valve 1 through the transmission mechanism 2, the output shaft of the motor 3 rotates through the transmission mechanism 2 to control the opening and closing of the valve 1, and the power supply 4 Power supply for the motor 3, the control circuit part 5 and the sensor 6, the contr...

specific Embodiment approach 2

[0038] Combine below Figure 1-8Describe this embodiment, this embodiment will further explain Embodiment 1, the expansion structure 8 includes an upper pressing plate 8-1, a lower pressing plate 8-2, an elastic member 8-3 and a central bolt 8-4, the upper pressing plate 8-1 An elastic member 8-3 is arranged between the lower pressing plate 8-2, the central bolt 8-4 is threadedly connected to the shell 11, and the upper pressing plate 8-1 and the lower pressing plate 8-2 are squeezed by the pre-tightening force, and the upper pressing plate 8 -1 and the lower pressure plate 8-2 extrude the elastic member 8-3 to radially expand and contact the pipe wall 10; the belt of the expansion structure 8 can be adjusted according to the size of the wellhead; the position of the expansion structure 8 can be adjusted according to the structure and function requirements, and can be Placed on the top of the plunger device, it can also be placed in other positions.

specific Embodiment approach 3

[0040] Combine below Figure 1-8 Describe this embodiment, this embodiment will further explain the first embodiment, the expansion structure 8 includes a spring 8-5 and an elastic member 8-3, the elastic member 8-3 is provided with a spring 8-5, and the elastic member 8-3 Under the extrusion of the spring 8-5, it expands radially and contacts the pipe wall 10; the elastic member 8-3 can be rubber or other elastic materials; the belt of the expansion structure 8 can be adjusted according to the size of the wellhead; the expansion structure 8 can be adjusted according to the structure And the function needs to adjust the position, it can be placed on the upper part of the plunger device, and can also be placed in other positions.

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PUM

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Abstract

The invention relates to a water drainage plunger, in particular to an intelligent plunger for drainage gas production. The intelligent plunger comprises a valve, a transmission mechanism, a motor, apower supply, a control circuit part, sensors, an expansion structure, a pipe wall, a shell, a mandrel and a connecting part, and fluid can be prevented from flowing through a gap between the plungerand the shell through the expansion structure when the drainage gas production intelligent plunger falls, so that water and air flow can flow through an air hole between the shell and the mandrel to enter the upper part of the drainage gas production intelligent plunger; and the drainage gas production intelligent plunger falls into accumulated liquid in a pipeline, the acceleration sensor collects the change of the accelerated speed of the drainage gas production intelligent plunger, information is fed back by the acceleration sensor, the temperature sensor and the pressure sensor, the falling height of the drainage gas production intelligent plunger is controlled through controlling the valve to be open and closed, lower gas generates high pressure when the drainage gas production intelligent plunger hovers in the water, the drainage gas production intelligent plunger and liquid at the upper part of the plunger are jacked to a well mouth, and the purpose of the drainage gas production is achieved.

Description

technical field [0001] The invention relates to a drainage plunger, in particular to a smart plunger for drainage and gas collection. Background technique [0002] The problem of fluid accumulation at the bottom of gas wells is a common problem in natural gas production, especially in the middle and late stages of gas well production. Therefore, it is necessary to take measures to discharge the fluid at the bottom of the well to ensure the gas recovery efficiency of the gas well. The plunger gas lift drainage gas recovery process is a mechanical method. When the plunger falls into the bottomhole fluid, a solid interface is formed between the lifted gas and the produced fluid, and the gas in the casing expands toward the tubing. , as the gas gradually increases, it will push the plunger and its upper liquid to reach the wellhead, so as to achieve the purpose of discharging the liquid at the bottom of the well. The existence of the plunger can effectively prevent the gas fro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B53/14F04B53/12F04B47/12F04B49/06
CPCF04B47/12F04B49/065F04B53/129F04B53/14
Inventor 宋文平周庆强刘锋强焱李祎代礼周程宇坤
Owner HARBIN HITTOP TECH CO LTD