Polymer mother liquor oxygen removal device

Abstract

The invention discloses a polymer mother liquid deoxygenation device, which relates to the field of tertiary oil recovery. In the technical solution provided by the embodiment of the present invention, by designing a spiral backflow tank 6 inside, and a cylindrical tube 4 with a plurality of sieve holes is sleeved outside the backflow tank 6, so that the polymer mother liquor can pass through the liquid inlet valve 2 enter the backflow tank 6, and mix evenly in the flow process of the spiral structure of the backflow tank 6, and then enter the aging tank through the screen hole 5 on the tube wall of the cylindrical tube 4 outside the backflow tank 6, and the dissolved gas in the mother liquor When passing through the sieve hole 5, it breaks up and passes through the exhaust pipe 7 connected to the tube wall of the cylindrical tube 4 to discharge the degassing device, so as to achieve the purpose of removing the dissolved gas in the mother liquor and avoid the occurrence of dissolved gas during the maturation of the mother liquor. In the case of reaction, the viscosity of the polymer mother liquor will not decrease.

Description

technical field [0001] The invention relates to the field of tertiary oil recovery, in particular to a polymer mother liquor oxygen removal device. Background technique [0002] In order to increase the recovery rate of oilfield crude oil, those skilled in the art generally use tertiary oil recovery technology for production. Polymer flooding is an important technology in tertiary oil recovery. Its method is to dissolve and mature polymer dry powder on the ground to form a mother liquor, and inject the mother liquor into the ground through a polymer injection pump. [0003] The dissolution process makes the polymer mother liquid contain a certain amount of dissolved gas, so that the polymer mother liquid will undergo a redox reaction due to the presence of oxygen in the dissolved gas during the subsequent curing process, causing the macromolecular chain of the polymer to break, resulting in a decrease in the viscosity of the mother liquid . [0004] At present, for the dis...

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Problems solved by technology

[0005] The embodiment of the present invention provides a polymer mother liquid deoxygenation device, which can solve the problem that the mother liquid carries oxygen in the aging mode and causes the macromolecular chain of the polymer to break, thereby reducing the viscosity of the mother liquid. The technical solution is as follows:

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