Improved device based on gas well pressure self-pumping pump

A technology for pressure, gas wells, applied in the direction of fluid pressure actuation devices, components of pumping devices for elastic fluids, pumps, etc.

Active Publication Date: 2020-04-24
大连华科机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the pump body is used to extract the liquid in the gas well, the natural gas can actually provide the upward power, but there is almost no device in the prior art that utilizes this power

Method used

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  • Improved device based on gas well pressure self-pumping pump
  • Improved device based on gas well pressure self-pumping pump
  • Improved device based on gas well pressure self-pumping pump

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Embodiment Construction

[0027] The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings. Since the device diagram of the present invention is relatively large and involves some fine content, the overall diagram of the device is split into figure 1 , figure 2 and image 3 , which respectively represent the upper, middle and lower parts of the device; in order to show that the three pictures are part of a whole picture, there is a small overlap of the three pictures at the joint. figure 1 , figure 2 and image 3 It shows the device diagram when the slide valve 11 moves to the bottom dead center. In order to show the situation that the slide valve 11 moves to the top dead center, there is also a Figure 4 ,but Figure 4 Only the situation of reversing valve body 1 is highlighted, because other parts are the same as the above three pictures. The following is a description of these four figures.

[0028] The purpose of the p...

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PUM

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Abstract

The invention discloses an improved device based on a gas well pressure self-priming pump. According to the improved device, the natural gas at the effusion position of a gas well passes a first fluidflow passage to supply pumping power for a power piston so as to drive a pumping piston to pump; the invention provides an ingenious reversing device which can use the power of the natural gas to drive the power piston to do back-and-forth movement; and the invention further provides a lower level float switch which can make the self-priming pump to automatically stop working in the case that thegas well effusion is less. By adopting the improved device, the gas well effusion can be pumped by using the power of the natural gas without an external power driving.

Description

technical field [0001] The invention relates to a pump for exploiting natural gas, more specifically, to an improved device for self-pumping pump based on gas well pressure. Background technique [0002] When exploiting natural gas, in the later stage of production of gas wells that are deep underground, due to formation pressure, decrease in gas well productivity, increase in wellbore temperature gradient, and temperature drop, some components in natural gas will condense in the wellbore to form condensate , and the gas production of the gas well is not enough to bring out this part of the condensate, the condensate will fall back to the bottom of the well, resulting in fluid accumulation in the gas well. The accumulation of fluids in gas wells will increase the back pressure on the gas zone and limit the productivity of the well, so it needs to be pumped out. When using the pump body to extract the liquid accumulation in the gas well, the natural gas can actually provide ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B47/08F04B53/10F04B53/14F15B13/04
Inventor 于涛叶少华范思军赵品
Owner 大连华科机械有限公司
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