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Underground fluid gas extraction device and process

An underground fluid and gas lift technology, applied in water supply installations, drinking water installations, buildings, etc., can solve problems such as difficult processing, strict requirements on well construction size, and complex structure of the gas lift system, so as to improve the applicability, The effect of small diameter of pump body and cost reduction

Inactive Publication Date: 2017-04-26
BCEG ENVIRONMENTAL REMEDIATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the disadvantages of the complex structure of the gas lift system in the prior art, the need for ancillary equipment such as outer sleeves, which makes the processing difficult and has strict requirements on the size of the well, thereby providing a Underground fluid gas stripping device and extraction process

Method used

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  • Underground fluid gas extraction device and process

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Experimental program
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Effect test

Embodiment 1

[0040] This embodiment provides an underground fluid gas stripping device, such as figure 1 As shown, it includes a closed pump body, and the upper and lower ends of the pump body are respectively provided with an upper one-way valve for controlling the liquid outlet and a lower one-way valve for controlling the liquid inlet; the side of the pump body is provided with Air intake controlled by valve.

[0041] The pump body is made of SS316 material, and the pump body is a slender cylinder.

[0042] The pump body has a length of 0.5-2m and a diameter of 40-100mm.

[0043] The pressure of the gas passing through the air inlet is 1-4Bar, and the air intake time is 1-30s.

[0044]Close the valve at the upper end of the air inlet, stop the air intake, open the one-way valve at the lower end, close the one-way valve at the upper end, and the underground fluid enters the pump body for liquid storage, and the liquid storage time is 10-600s.

[0045] The valve at the upper end of the...

Embodiment 2

[0046] Embodiment 2 groundwater extraction process

[0047] The size of the extraction well is 110mm in the present embodiment; the length of the pump body of the underground fluid gas lifting device used is 1.2m, and the diameter is between 50mm;

[0048] Proceed as follows:

[0049] (1) Water storage stage: close the valve at the upper end of the air inlet, stop the air intake, the upper one-way valve is automatically closed, the lower one-way valve is opened by the water pressure, groundwater enters the pump body, and the water storage time is 30s;

[0050] (2) Water lifting stage: Open the valve at the upper end of the air inlet to control the pressure of the injected gas to 3Bar, the gas injection time is 5s, the air is injected into the pump body, and the lower one-way valve is pressed, and the upper one-way valve is opened. , to 0.8m 3 The water extraction rate of / h extracts the groundwater from the outlet hole;

[0051] (3) Exhaust stage: close the valve at the upp...

Embodiment 3

[0053] Embodiment 3 groundwater extraction process

[0054] The size of the extraction well is 200mm in the present embodiment; the length of the pump body of the underground fluid gas lifting device used is 1.8m, and the diameter is between 70mm;

[0055] Proceed as follows:

[0056] (1) Water storage stage: close the valve at the upper end of the air inlet, stop the air intake, the upper one-way valve is automatically closed, the lower one-way valve is opened by the water pressure, groundwater enters the pump body, and the water storage time is 60s;

[0057] (2) Water lifting stage: Open the valve at the upper end of the air inlet to control the pressure of the injected gas to 4Bar, the gas injection time is 10s, the air is injected into the pump body, and the lower one-way valve is pressed, and the upper one-way valve is opened. , to 2m 3 The water extraction rate of / h extracts the groundwater from the outlet hole;

[0058] (3) Exhaust stage: close the valve at the uppe...

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Abstract

The invention discloses an underground fluid gas extraction device and process, and belongs to the field of underground water extraction. The underground fluid gas extraction device belongs to a device for extracting underground water from an extraction well by using a gas extraction mode. The underground fluid gas extraction device provided by the invention has the advantages that compressed air is used as power; control elements are arranged in safe positions of the ground surface; underground valves are all mechanical automatic values; underground equipment does not need electrification; various underground adverse conditions are overcome; the explosion risk caused by underground high-concentration unidentified gas is avoided; in addition, the structure is simple; and the equipment cost is low.

Description

technical field [0001] The invention relates to the field of groundwater extraction, in particular to an underground fluid gas lift device. Background technique [0002] Since the 1950s, my country's industrialization and urbanization have begun to advance in an all-round way, and the rapid development of mining, smelting, and chemical industries has led to the increasing expansion of soil pollution in my country and the increasingly serious pollution. And with the advancement of "retreating from the second to the third" in recent years, a large number of industrial sites have been relocated, leaving millions of polluted sites, so the task of soil restoration is extremely arduous. [0003] In-situ heating technology and multiphase extraction technology (MPE) are one of the more commonly used site restoration technologies abroad. In-situ heating technology appeared in the 1930s and has been applied to the remediation of contaminated sites since the 1970s. MPE is also one of ...

Claims

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Application Information

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IPC IPC(8): E03B3/06B09C1/06
CPCE03B3/06B09C1/06B09C2101/00
Inventor 李书鹏孙尧刘渊文朱宏伟韦云霄刘阳李季
Owner BCEG ENVIRONMENTAL REMEDIATION CO LTD
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