High-temperature reservoir chemical flooding airtight polymer preparation device

Abstract

The invention discloses a high-temperature reservoir chemical flooding airtight polymer preparation device. The high-temperature reservoir chemical flooding airtight polymer preparation device comprises a dry powder storage tank, a screw feeder, a receiving hopper, a jet device, a curing tank and a water supply system; the water supply system is communicated with the water inlet of the jet device; the dry powder storage tank, the screw feeder, the receiving hopper, the jet device and the curing tank are orderly communicated with each other to form an airtight polymer preparation system; the high-temperature reservoir chemical flooding airtight polymer preparation device further comprises a nitrogen supply system which is communicated with the dry powder storage tank, the receiving hopper and the curing tank by use of a nitrogen supply pipeline, respectively; a nitrogen sealing pressure control system is arranged on the nitrogen supply pipeline. The high-temperature reservoir chemical flooding airtight polymer preparation device is capable of preparing polymers under the working condition of nitrogen isolated from oxygen, and therefore, the nitrogen airtight preparation of a polymer solution is realized, the content of dissolved oxygen in the polymer solution is greatly reduced, the problem of relatively high oxygen concentration in the polymer solution obtained by use of an open hydraulic jet flow polymer preparation device is solved and the requirement indexes of high-temperature reservoir chemical flooding on the oxygen content of the polymer solution are satisfied.

Description

technical field [0001] The invention belongs to the technical field of oilfield surface coordination and polymerization, and in particular relates to a closed polymerization device for chemical flooding of high-temperature oil reservoirs. Background technique [0002] Research and application of chemical flooding technologies such as polymer flooding, polymer weak gel control flooding, polymer and surfactant and alkali, polymer and surfactant composite flooding at home and abroad to improve oilfield ultimate recovery It has been quite extensive and in-depth, but the research and application of chemical flooding technology for high temperature reservoirs above 80 °C has not yet broken through. Among them, the key issue in the preparation of the polymer solution in the injected flooding agent system is to prevent the chemical degradation of the polymer and reduce the viscosity during the preparation process. The chemical degradation of polymers refers to the occurrence of red...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a high-temperature oil reservoir chemical flooding airtight compounding device to solve the problem of high dissolved oxygen concentration in the polymer solution obtained from the existing open hydraulic jet compounding device

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