Device for collecting polymers from polymer waste liquid

Abstract

The invention discloses a device for collecting polymers from polymer waste liquid. A separator is installed on the upper portion of a waste liquid collection tank. The lower portion of the separator is provided with a waste liquid drainage pipe which is connected into the waste liquid collection tank. The inlet end of a polymer conveying pump is installed at the bottom of the separator. The bottom of the separator and the inlet end of the polymer conveying pump are made communicated through a polymer inlet and outlet. The outlet end of the polymer conveying pump is provided with an outlet, a polymer receiving barrel is arranged below the outlet and installed on a polymer smashing machine, a polymer finished product pot is connected with a polymer finished product conveying pump, a waste liquid conveying pump is installed outside the lower portion of the waste liquid collection pot, power lines of the waste liquid conveying pump, the polymer smashing machine and the polymer finished product conveying pump are connected to a control console, waste liquid in which polymers are extracted can enter a produced liquid processing system of an oil field to become injected water for the waterflooding oil field after being processed, and the extracted polymers can be used as raw materials for oil field stratum water shut-off and profile control after being smashed by the polymer smashing machine.

Description

technical field [0001] The invention belongs to oil field waste liquid treatment equipment, which is an equipment for extracting residual polymers from polymer-containing waste liquids produced after the third oil recovery and polymer flooding, in particular to a method for collecting polymers from polymer-containing waste liquids installation. Background technique [0002] With the continuous deepening of oilfield development, the third oil recovery polymer flooding has become an indispensable development measure for the development and stable production of many oilfield old areas. However, when this technology is applied, a lot of waste liquid containing residual polymer will be generated from The well is discharged to the surface. For example, the flushing fluid returned from well flushing in the polymer injection area contains residual polymers, and the wells in the polymer injection area will also return a large amount of residual polymers from the well during workover ...

AI Technical Summary

Problems solved by technology

The polymers in these waste liquids are toxic and are likely to cause environmental pollution, so they cannot be discharged at will. The polymers in these waste liquids are in the form of gelatinous blocks and cannot be discharged into the oilfield production fluid treatment system, because the polymers in the form of gelatinous blocks are harmful to the oil field. The water quality in the production fluid treatment system is greatly affected. The jelly affects the normal operation of the oilfield production fluid treatment system. When it enters the oilfield production fluid treatment system and injects into the formation of the water injection well, it will block the flow channel of the water injection layer, causing The water absorption capacity of the water injection well is reduced, and the effect of water injection development cannot be achieved, which will have a serious impact on the future development of the oil field.

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