Device for testing wall adhesion temperature of high-water-content gas-dissolved crude oil

Abstract

The invention provides a high-water-content gas-dissolved crude oil wall adhesion temperature testing device, which comprises a reaction kettle, a stirring system, a monitoring system, a temperature control system, a pressurization system and an image acquisition system, and is characterized in that the reaction kettle is used for placing high-water-content gas-dissolved crude oil with the same water content as a testing site to simulate an actual pipeline; the temperature control system and the pressurization system simulate pipeline operation conditions by controlling temperature and pressurizing a reaction kettle, the stirring system is provided with a helical ribbon screw type stirring structure and is arranged in the reaction kettle for stirring to simulate a pipe flow scouring and shearing process, and the monitoring system collects and monitors pressure and temperature in the reaction kettle and wall surface oil condensation stress. After the stirring process of the stirring system is finished, the image acquisition system is used for performing image acquisition on the change condition of the inner diameter of the pipe caused by crude oil wall adhesion, so that the change condition of the crude oil wall adhesion process can be tested under different dissolved gas pressures, water contents, shearing conditions and temperature conditions; therefore, the wall sticking temperature of the high-water-content gas-dissolved crude oil is accurately determined.

Description

technical field [0001] The invention relates to an experimental simulation testing device, in particular to a testing device for sticking wall temperature of crude oil with high water-soluble gas content. Background technique [0002] The oilfield development process is divided into four stages according to the change of water cut, which are low water cut stage (water cut less than or equal to 20%), medium water cut stage (water cut greater than 20% and less than or equal to 60%), high water cut stage (water cut greater than 60% % less than or equal to 90%) and extremely high water content stage (moisture content greater than 90%). At present, major oil fields in my country have successively entered the late stage of high water-cut development, and the water content of the produced fluid is as high as 85%. As we all know, most of the crude oil produced in my country is "three-high" crude oil. In order to improve the flow characteristics of crude oil, heating or heat-tracing...

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Problems solved by technology

[0004] From the background research above, it can be seen that there is no indoor testing device for the wall adhesion of crude oil with high water-soluble gas content.

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