Electric submersible pump constant liquid level intelligent oil extraction system and method

The invention relates to an electric submersible pump constant liquid level intelligent oil extraction system and method, and the method comprises the following steps: a control logic unit collects underground data before oil extraction, and draws a front well condition model according to the collected underground data; the control logic unit collects underground data in the initial stage of oil extraction and draws an expected well condition model according to the collected underground data; the control logic unit performs fitting according to the well condition model before oil recovery and the expected well condition model, and adjusts the primary oil recovery rate according to fitting data; in the oil extraction process, the control logic unit adjusts the oil extraction rate in real time according to well conditions and enters an oil extraction drawing stage; and entering a constant liquid level oil production stage through a well site oil production strategy and continuously adjusting oil production data