Movable oilfield nitrogen making liquefaction device

A liquefaction device and mobile technology, applied in the field of mobile oilfield nitrogen liquefaction devices, can solve the problems of inability to achieve continuous production, inconvenient use, lack of availability, etc., and achieve the effects of convenient on-site movement, compact use performance and compact device

Active Publication Date: 2014-01-01
天津凯德实业有限公司
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  • Summary
  • Abstract
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Problems solved by technology

[0003] At present, most of the oilfield drilling uses a single skid-mounted vehicle-mounted nitrogen equipment for producing high-pressure nitrogen, which does not have the function of producing high-pressure nitrogen and liquid nitrogen at the same time.
Or a liquid nitrogen storage tank plus a liquid nitrogen pump truck, but liquid nitrogen needs to be transported to the drilling site, and there are disadvantages such as inability to achieve continuous production and inconvenient use.

Method used

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  • Movable oilfield nitrogen making liquefaction device

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Embodiment Construction

[0013] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0014] Such as figure 1 As shown, a mobile oilfield nitrogen liquefaction device of the present invention first starts the air screw compressor 2, and the air in the atmosphere enters the air screw compressor 2 through the air filter 1, and the air is compressed and boosted to 2.4MPa, and the compressed gas It is first cooled by the aluminum-fin air-cooled cooler 3, then enters the steam-water separation tank 4 to remove water, and then is filtered and purified by a pretreatment device 5 such as a filter, so that the purity of the compressed gas can reach a particle size content of less than 0.01um and an oil mist content of less than 0.01 The purity index of ppm then enters the hollow fiber membrane 6 to realize nitrogen-oxygen separation. The separated nitrogen enters the nitrogen piston booster 7 and is compressed to 35MPa to become high-pressu...

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Abstract

The invention relates to a movable oilfield nitrogen making liquefaction device which comprises a high-pressure nitrogen production unit and a liquid nitrogen preparation unit. High-pressure nitrogen is used for direct expansion refrigeration, parts of circulating refrigerant nitrogen media are used as refrigerants for indirect refrigeration, the nitrogen is liquefied, and energy is saved. The device is compact, convenient to adjust, continuous in operation, safe, reliable and convenient in on-site movement.

Description

technical field [0001] The invention relates to a nitrogen producing device, in particular to a mobile oilfield nitrogen producing liquefaction device. Background technique [0002] Some oilfields in my country belong to the "three low" reservoirs, and corresponding measures to increase production must be taken. At present, high-pressure nitrogen has been widely used in oilfield drilling, oil production, well completion protection, purge replacement and other constructions; recent technologies such as "full-process liquid nitrogen injection and sand fracturing" and "pre-liquid nitrogen fracturing" It has become an emerging hot technology for oil production in oil fields, and liquid nitrogen has become an essential raw material for oil field production. [0003] At present, most of the oil field drilling uses a single skid-mounted vehicle-mounted nitrogen equipment for producing high-pressure nitrogen, which does not have the function of producing high-pressure nitrogen and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25J3/04
Inventor 张忠家陶晓芳孙艳
Owner 天津凯德实业有限公司
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