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Oil-gas field waste liquid treatment system and treatment method

A waste liquid treatment system and technology for oil and gas fields, applied in the field of oil and gas field water treatment, can solve the problems affecting the health of residents in the surrounding environment of the well site, pollution of crops and surface water systems, corrosion of gathering and transportation and water injection systems, etc., so as to reduce labor intensity. , Save the amount of dosing, and deal with the effect of stable indicators

Pending Publication Date: 2020-09-22
SHAANXI HAIMO OILFIELD SERVICE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the waste liquid of these measures is not treated in time, it will produce stench, affect the surrounding environment of the well site and the health of local residents, and cause pollution to crops and surface water systems.
Due to the large amount of waste liquid generated during the entire operation process, the cost of transportation by vehicles is high, and the waste liquid is severely corrosive to the gathering and transportation and water injection systems, which affects the service life of the ground system and has a great impact on the normal operation of the produced water reinjection system. pressure
At present, there are very few that can meet the emission standards or be recycled. The proposed treatment process is complicated, occupies a large area, is inconvenient to use on site, and costs a lot.
In recent years, physical sedimentation, chemical flocculation, biochemical treatment and other processes are usually used for long treatment period, large equipment occupation area, large investment and other characteristics, which are contrary to the concept of "cost reduction and efficiency increase" in oil fields. Stable water treatment equipment to cope with the increasingly severe environmental pressure of oil and gas fields

Method used

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  • Oil-gas field waste liquid treatment system and treatment method
  • Oil-gas field waste liquid treatment system and treatment method
  • Oil-gas field waste liquid treatment system and treatment method

Examples

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Effect test

Embodiment 1

[0070] See figure 1 with figure 2 , an oil and gas field waste liquid treatment system, comprising: a dosing device 10 , an integrated reaction device 20 , an integrated separation device 30 and a filter device 40 . The integrated reaction device 20 includes: a reaction box 21 and an oil collection assembly 22 . The top of the reaction box 21 is open, and the opening communicates with the drug outlet of the dosing device 10 , and the first liquid inlet 211 of the reaction box 21 is connected with an external liquid supply device. The oil collecting assembly 22 is located in the reaction box 21 , and the oil collecting assembly 22 is close to the top of the reaction box 21 , and the oil inlet of the oil collecting assembly 22 can communicate with the inside of the reaction box 21 . The integrated separation device 30 includes a separation assembly 31 and at least one mud scraping assembly 32 . The second liquid inlet 311 of the separation assembly 31 is connected to the fir...

Embodiment 2

[0075] See figure 2 with Figure 3a , this embodiment is improved on the basis of Embodiment 1. The separation assembly 31 includes: a separation tank 33 and a sloping plate separation assembly 34 . The mud scraping assembly 32 includes: a driving motor 35 , a mud collecting bucket 36 , a connecting shaft 37 , a mud scraping plate 38 and a mud collecting bucket 39 . The second liquid inlet 311 and the second liquid outlet 312 are located on the separation tank 33 . The inclined plate separation assembly 34 is disposed in the separation tank 33 , and part of the inclined plate separation assembly 34 communicates with the second liquid outlet 312 . The liquid can continuously flow from the reaction tank 21 into the separation tank 33 , pass through the inclined plate separation assembly 34 for solid-liquid separation, and then flow out into the filter device 40 through the second liquid outlet 312 . The drive motor 35 is fixedly connected to the top of the separation tank 3...

Embodiment 3

[0092] See Figure 7 , the embodiment of the present invention also provides a treatment method for oil and gas field waste liquid, comprising:

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Abstract

The invention discloses an oil-gas field waste liquid treatment system, which comprises: a dosing device, an integrated reaction device, an integrated separation device and a filtering device. The integrated reaction device comprises a reaction box and an oil collecting assembly; the integrated separation device comprises a separation assembly and at least one mud scraping assembly. The inventionfurther provides an oil-gas field waste liquid treatment method. A large amount of production waste liquid and measure waste liquid are generated in the oil-gas field production gathering and transportation process, factors like oil, suspended solids, particle size median, pH value, bacteria and influencing ions in the wastewater are removed by combining chemical reaction and physical separation,oil-gas field waste liquid treatment can reach reuse or reinjection water quality standards, effective recovery and water recycling of the oil-gas field waste liquid are achieved, and the system and method have the advantages of large treatment amount, high adaptability, low treatment cost, stable treatment index and low energy consumption.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field water treatment, and in particular relates to an oil and gas field waste liquid treatment system and treatment method. Background technique [0002] During the development of oil and gas fields, especially during the construction of gas wells and oil wells, a large amount of waste liquid will be discharged to the ground, and a large amount of produced water will be generated during the production of oil fields. These oil and gas field waste liquids contain clay particles brought out from the formation , There are also pollutants such as crude oil and additives in the measure fluid. Such oil and gas field waste liquid is a stable and complex multi-phase dispersion system, and it is very difficult to meet the standard treatment. In recent years, with the continuous increase of environmental protection in oil fields, the contradiction that oil and gas fields produce a large amount of waste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F103/36
CPCC02F9/00C02F1/001C02F2001/007C02F1/40C02F1/5281C02F1/66C02F1/72C02F2209/06C02F2303/14C02F2103/365
Inventor 黄磊孟阳杨张智博李宁军
Owner SHAANXI HAIMO OILFIELD SERVICE
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