Electric power-based real-time monitoring method and system for oil well electric heating wax removal process

Abstract

The invention provides an electric power-based real-time monitoring method and system for an oil well electric heating wax removal process. The method comprises the following steps of: acquiring electric parameters of a sucker rod pump oil well, calculating average power in a complete stroke period, and further obtaining reference stroke average power; judging whether wax precipitation is serious or not in real time by monitoring an actual power value, and determining whether the oil well is heated or not according to the wax precipitation condition of the sucker rod pump oil well; determining proper reference stroke average power and an electric heating wax removal period; and finally finding out an electric heating power preset value with the minimum energy consumption by changing the electric heating power for multiple times. The method can continuously monitor the underground wax precipitation condition of the sucker rod pump oil well in real time, has the advantages of high accuracy, high real-time property, low cost, high safety and the like, and can effectively save energy and improve the production efficiency by gradually determining the electric heating wax removal reference period and the electric heating reference power in the electric heating process.

Description

technical field [0001] The invention relates to the field of soft measurement technology, in particular to a method and system for real-time monitoring of an oil well electric heating wax removal process based on electric power. Background technique [0002] The problem of wax deposition in oil wells is widespread. In the process of crude oil extraction, waxy crude oil rises from the oil pipe to the ground. Due to changes in environmental conditions such as temperature and pressure and the destruction of the original chemical balance, wax precipitates from the crude oil, accumulates, and adheres to the oil well. The surface of the facility will cause wax deposition on the surface of the oil well facilities such as the inlet of the pump, the oil pipe and the sucker rod; the wax deposition in the oil well will hinder the flow of the oil, reduce the pump efficiency, affect the constant of the oil, and cause the load of the rod pump pump unit to increase. Increase or even cause ...

AI Technical Summary

Problems solved by technology

However, since the oil pumping unit is located several thousand meters deep underground, it is difficult to directly observe the degree of wax removal by electric heating, so it is difficult to determine the period and duration of wax removal by electric heating

[0003] For a long time, the experience of technicians has been relied on to determine the cycle and duration of electric heating wax removal. This is highly subjective, and it is easy to cause the electric heating wax removal time to be too long or too short, resulting in low production efficiency and energy consumption. waste

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