Pipe cleaning experimental facility suite for crude oil pipeline

Abstract

The invention provides a pipe cleaning experimental facility suite for a crude oil pipeline. The pipe cleaning experimental facility suite comprises a circuit system and a pipe cleaning experimental system, wherein the circuit system includes an oil tank (1), a wax deposition pipe section (9) and a gear oil pump (6), which are connected into a closed loop in sequence; the wax deposition pipe section (9) can simulate a wax deposition process of crude oil in a transportation process; the wax deposition pipe section (9) can be demounted; the pipe cleaning experimental system can measure the strength and the wax cleaning resistance of a wax deposit on the inner wall of the wax deposition pipe section (9). According to the pipe cleaning experimental facility suite for the crude oil pipeline, the true wax deposit in an oil conveying pipeline is obtained by adopting the circuit system; the indoor simulation of the ball running wax cleaning of the crude oil pipeline is carried out by adopting the pipe cleaning experimental system. A wax deposition law of wax-containing crude oil in a pipe conveying condition, the property of a wax layer and a failure law of the wax layer in a pipe cleaning process can be researched; further, the internal relation among the pipe cleaning process, the wax deposition process and the property of the wax deposit is explored.

Description

technical field [0001] The invention relates to the field of simulation experiment equipment for crude oil pipeline transportation, in particular to a kit of crude oil pipeline pigging experiment equipment. Background technique [0002] Wax deposition is a common problem in the production and transportation of waxy crude oils. The solubility of wax in crude oil decreases with the decrease of temperature. When the oil temperature drops to the wax precipitation point temperature, wax crystallizes out due to supersaturation. Therefore, if the temperature of the pipe wall is lower than the wax precipitation point, wax deposits will be formed, reducing the pipeline flow area, reducing the pipeline transportation capacity, increasing energy consumption, and even causing pipeline wax blockage or production shutdown accidents in severe cases. More than 80% of the crude oil produced in my country is waxy crude oil, and the problem of wax deposition is particularly serious. So far, ...

AI Technical Summary

Problems solved by technology

As the thickness of the wax layer increases, the flow area of ​​the oil pipeline decreases, the flow resistance increases, the pipeline transportation capacity decreases, and the energy consumption increases. In severe cases, it may even cause pipeline wax blockage or production shutdown accidents

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