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Oilfield fracturing wastewater treatment equipment

A technology for waste liquid treatment and oil field fracturing, applied in water/sewage treatment, flotation water/sewage treatment, oxidized water/sewage treatment, etc. To achieve the effect of convenient use, wide application range, and saving construction

Inactive Publication Date: 2014-02-19
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If we develop different processing equipment according to different destinations, this will undoubtedly increase the operating cost, and the efficiency is low and the adaptability is not strong

Method used

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  • Oilfield fracturing wastewater treatment equipment

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Experimental program
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Effect test

Embodiment 1

[0040] The destination of the oilfield fracturing waste fluid in this embodiment is to be collected into the gathering and transportation system or reinjected into the formation. In the collection and transportation system, the fracturing waste fluid is generally collected and processed through a certain process, and then mixed with the oil production sewage according to a certain proportion for reprocessing, and the treated water quality is uniformly collected and transported to the oil gathering station for treatment by the oil and gas gathering and transportation pipeline; The fracturing waste fluid collected into the gathering and transportation system is mainly for the removal of sensory substances. The main indicators include suspended solids (SS), chroma, turbidity, etc. At the same time, a low dissolved oxygen concentration in the effluent should be ensured. The re-injection of fracturing waste fluid into the formation is a treatment method adopted by some oil and gas f...

Embodiment 2

[0048] Discharging fracturing waste liquid directly after treatment is the mainstream method at present, but the treatment requirements are high, and the treated water must meet the national comprehensive sewage discharge standard (GB8978-1996). Mainly to remove COD, petroleum, SS, etc.

[0049] When the oil field fracturing waste liquid is discharged directly after treatment, the flocculation tank 300 is an electrocoagulation tank; the first control valve 001 is closed, the second control valve 002 is opened, and the third control valve 003 is closed , the fourth control valve 004 is opened. Alternatively, two movable partitions divide the comprehensive reaction tank into a flocculation tank, an air flotation tank and an oxidation tank, and the flocculation tank, the air flotation tank and the oxidation tank are respectively treated differently.

[0050] When oil field fracturing waste fluid is discharged directly after treatment, it must meet the discharge standard, so its ...

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Abstract

The invention provides oilfield fracturing wastewater treatment equipment which comprises an oil separation tank, an overall reaction tank, a disinfection tank and a composite filtration system, which are connected in order. The oilfield fracturing wastewater treatment equipment is integrated mobile equipment. As the oilfield fracturing wastewater treatment equipment is integrated mobile equipment, the equipment is convenient to move and occupies little space; processes such as construction, installation and the like of traditional water treatment equipment are saved; and the equipment is convenient to use. In addition, the oilfield fracturing wastewater treatment equipment can be adopted to process wastewater by different processes according to different destinations of wastewater. The equipment has advantages of strong applicability, wide application range, economical treatment process and simple operation.

Description

technical field [0001] The invention relates to the field of waste water treatment, in particular to a convenient oil field fracturing waste liquid treatment equipment. Background technique [0002] Fracturing technology is a major measure for oil and gas well stimulation, and it is widely used in various oil fields. This process can significantly improve the conductivity of oil and gas layers, so that oil and gas can flow smoothly into production wells, so as to achieve the purpose of increasing production. During this process, a large amount of fracturing waste fluid will be produced, and the main pollutants are petroleum, COD, sulfide, phenol, suspended solids, chroma, etc. If these waste liquids are discharged into the environment, they will have a great impact on the local water quality and cause immeasurable losses to the production and long-term development of the oil field. [0003] Due to the complexity of the composition of fracturing waste fluid and the viscosit...

Claims

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Application Information

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IPC IPC(8): C02F9/08C02F1/40C02F1/78C02F1/24C02F1/463
Inventor 张宝刚王根严华锋徐爱琴冯传平
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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