Skid-mounted combined oil removal-impurity removal-iron removal device for oilfield confecting polymer water

Abstract

The invention discloses a skid-mounted combined oil removal-impurity removal-iron removal device for oilfield confecting polymer water. According to the invention, a primary lifting pump is connectedwith a liquid inlet of a filter through a pipeline; an outlet of the filter is connected with an inlet of an aeration device through a pipeline; an outlet of the aeration device is connected with a liquid inlet pipe orifice of a secondary lifting pump through a pipeline; a liquid outlet pipe orifice of the secondary lifting pump is connected with a liquid inlet pipe of an iron removing device; anda liquid outlet pipe of the iron removing device is connected with a liquid inlet pipe orifice of a filtered water tank. According to the invention, a treatment technological process is complete, thewhole treatment process of confecting polymer water can be independently completed, the process is relatively simple, chemicals are not added, operation cost is low, and secondary pollution is avoided; a main treatment device is skid-mounted, convenient to move and use, high in intelligent degree and capable of conducting continuous operation, and does not need to be shut down for backwashing; inthe operation process of the device, only gas and electricity are added and chemicals are not added, so the device is environment-friendly, safe and pollution-free to use, good in treatment effect, low in engineering investment and operation cost and convenient to manage; and the device can be widely applied to oil removal, impurity removal and iron removal treatment of confecting polymer water.

Description

technical field [0001] The present invention relates to the technical field of oilfield produced water treatment for polymer blending, and in particular to a skid-mounted combined oilfield blending water removal device for removing impurities and iron. The high iron content can completely improve the water quality of the mixing water. Background technique [0002] Since the 1980s, my country's oilfields have used clear water to prepare polymers to inject into the formation. On the one hand, groundwater needs to be exploited, and on the other hand, residual sewage such as oilfield produced water must meet the standards and be discharged outside. With the increasingly stringent environmental protection regulations, the total amount of groundwater exploitation and sewage discharge will be limited. The contradiction between the application of the existing tertiary oil recovery technology and the remaining sewage treatment has become more prominent, which restricts the developmen...

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Problems solved by technology

[0003] In order to solve this problem and make the water quality after the treatment of produced water can be used for polypolymerization, the Chinese invention patent "Aeration and desulfurization, iron removal and deoxidation device and scheme for oil field compounding sewage aeration, patent number: 201810730261.7" was selected. The device can only Sulfur and iron removal cannot handle oil and suspended solids in produced water, and it is necessary to cooperate with pre-treatment and post-treatment equipment to treat raw water indicators other than iron and sulfur to the standard and then enter the equipment for joint operation. The equipment integration is not enough. High dependence on pre-processing and post-processing equipment, unable to independently complete the entire process of polymer water treatment, and unable to meet the requirements of most polymer injection stations for processing equipment

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