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Device and method for recycling and treating drilling and completion waste liquid through ultrasonic technology

A treatment device, ultrasonic technology, applied in mining wastewater treatment, filtration treatment, water/sewage treatment, etc., can solve the problems of insignificant demulsification and separation effects, large equipment footprint, high maintenance frequency, etc., to improve the use of ozone High efficiency, small occupied area and high air flotation efficiency

Pending Publication Date: 2021-12-28
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0008] However, the existing ultrasonic air flotation device still has the problems of too slow bubble rate, large bubbles, and insignificant demulsification and separation effects; while the harmless treatment of drilling and completion waste fluid has complex processes and the equipment occupies a large area , high energy consumption, high maintenance frequency and other disadvantages

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  • Device and method for recycling and treating drilling and completion waste liquid through ultrasonic technology
  • Device and method for recycling and treating drilling and completion waste liquid through ultrasonic technology

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Embodiment Construction

[0031] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0032] A device and method for recycling treatment of drilling and completion waste fluid by ultrasonic technology, such as figure 1As shown, the processing equipment includes a shell 9, and an inclined baffle 17 is arranged in the shell 9, and the inclined baffle 17 separates the shell 9 into a cavitation air flotation area 6 and a photocatalytic oxidation area 14, specifically , the cavitation air flotation area 6 is connected with the photocatalytic oxidation area 14 upper part, and the lower part of the cavitation air flotation area 6 is provided with a sludge area 4 and a sludge discharge pipe 5, and the side part of the cavitation air flotation area 6 is connected to the water inlet pipe 2 connected, the water inlet pipe 2 includes an ozone air inlet 1, a hydraulic cavitation device 3, an ultrasonic transducer 8 is provided inside the cavitation air flotation a...

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Abstract

The invention provides a device and method for recycling and treating drilling and completion waste liquid through ultrasonic technology. The device comprises a shell, and is characterized in that an inclined baffle is arranged in the shell and divides the shell into a cavitation air flotation area and a photocatalytic oxidation area; a slag scraping plate, a slag discharging groove and a slag discharging pipe are arranged at the top of the shell; an inclined plate filter and a water outlet pipe are arranged at the lower part of the photocatalytic oxidation area; and a photocatalytic partition plate and an ultraviolet light tube are arranged in the photocatalytic oxidation area. The device has the advantages that a hydrodynamic cavitation device and an ultrasonic cavitation device are integrated, so that the problem of instability of tiny bubbles generated by an air flotation device is solved. According to the device and method, hydrodynamic cavitation, ultrasonic wave, ozone catalysis and photocatalysis technologies are combined, and ozone is promoted to be quickly decomposed to generate more oxidized free radicals, so that the degradation rate of organic matters is increased, meanwhile, the ozone adding amount is reduced, the waste liquid treatment operation cost is reduced, the treatment process procedure is optimized, and the device and method have important significance on construction of ecological oil fields.

Description

technical field [0001] The invention belongs to the technical field of waste liquid treatment in oil and gas fields, and in particular relates to a treatment device and method for recycling waste liquid from drilling and completion using ultrasonic technology. Background technique [0002] As an important energy and strategic resource, petroleum and natural gas have played a vital role in the rapid development of my country's economy. In recent years, with the increasing intensity of oil and gas exploitation, environmental issues in the exploitation process have attracted more and more attention. With the increase of oil demand and the development of drilling technology, the number of wells and drilling depth are increasing. In order to meet the technical requirements of complex geological conditions and drilling and completion projects, the types of drilling and completion fluids are increasing, and the additives are also increasing. make its composition extremely complex....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/08C02F103/10
CPCC02F9/00C02F2103/10C02F1/725C02F1/78C02F1/325C02F1/36C02F1/24C02F1/001C02F1/40C02F1/28C02F2305/10C02F2305/02
Inventor 时贤孙泽壮王富华黄维安张卫东张亮
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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