Oil and gas field wastewater full quantitative disposal evaporator, Kang Jinghui evaporator editor and you talk about the oil and gas field wastewater full quantitative disposal evaporator.
1. The necessity of wastewater treatment in oil and gas fields
With the increase of oil and gas exploration efforts, the number of gas production wells is gradually increasing, and the amount of sewage brought by it is also increasing year by year. Oil and gas field wastewater comes from the formation associated water produced during the oil and gas production process.
In order to obtain qualified oil and gas products, it is necessary to separate the associated water from the oil and gas, and the separated associated water contains a certain amount of crude oil and other impurities, and the separated associated water is called oil and gas field sewage. It mainly includes fracturing flowback fluid, mud filtrate and gas field produced water. Fracturing operation is an important part of the oil and gas field exploitation process, and it plays a very important role in the potential and efficiency enhancement of oil wells in old oilfields, new well testing and single well stimulation by fracturing, but the application of fracturing technology makes oil and gas wells inevitably produce waste liquid in the fracturing process.
2. Characteristics of fracturing flowback fluid wastewater
Fracturing flowback fluid has the characteristics of complex contaminant composition, high concentration and high viscosity, and its main components are polymer and high concentration guanidine gum. The complexity and uniqueness of the components of fracturing flowback fluid make it extremely difficult to deal with. If it is not processed and directly enters the gathering and transportation process, it will seriously interfere with the follow-up process, seriously affect the production of the oilfield, lead to equipment blockage, oilfield decline, environmental protection standards and many other problems.
3. Common processes for wastewater treatment in oil and gas fields
Most of the domestic oilfields adopt the "old three-stage" conventional treatment process of natural sedimentation-coagulation-filtration, and there are many problems in the traditional treatment process, such as long sedimentation time, low treatment capacity, large floor area, and excessive dosage of purification agents, which ultimately leads to high treatment costs.
Fourth, the evaporator for the full quantitative disposal of wastewater in oil and gas fields
In view of the technical difficulties of full quantification of wastewater in oil and gas fields, we continue to innovate, according to the different characteristics of various sewage in oil and gas fields, with MVR evaporator as the core treatment equipment, combined with integrated air flotation softening and sedimentation, precision filtration and reverse osmosis and other technologies, to achieve efficient and rapid treatment and comprehensive utilization of oil and gas field wastewater, and ensure that the effluent is discharged up to standard.
The process adopts modular combination to meet the changes in the composition of the fracturing flowback fluid caused by the change of the development block, effectively solve the problem of fracturing flowback fluid pollution of different pollutant components, save treatment costs, stabilize the treatment effect, and occupy a small area of the equipment.
The evaporator for the full quantitative treatment of wastewater in oil and gas fields has the advantages of strong adaptability, good treatment effect, good impact resistance, high integration, low operating cost and short construction period.
Treatment objects: gas field produced water, fracturing flowback fluid, mud filtrate
Treatment process: pretreatment + plate multi-effect MVR forced circulation + tail water guarantee