Integrated Measurement and Control Technology for Intelligent Artificial Lift Based on Multiphase Flowmeter

Abstract

Intermittent oil recovery is a direct and effective way to reduce energy consumption and improve recovery efficiency. However, the existing open and shut-in well procedure relies on manual control, which has problems such as increased labor costs, changeless intermittent parameters, poor energy saving, and also brings hidden dangers to wells. As multiphase flowmeter can detect fluid supply status of oil wells in real time, it could be a significant tool for intermittent production design. This paper proposes a multiphase flow online measurement technology based on magnetic resonance, which can measure the production and composition of a single well in real time, with high frequency and accuracy. A set of oil well intelligent control system is developed to realize remote well open and shut in, and automatic and controllable intermittent oil production. A relationship model of well production data, open time and intermittent time is described by the machine learning-based algorithm. While the model is installed on wells, it can automatically learn and constantly refine the model to intelligently design an intermittent process. The proposal of this technology integrates a single well from parameter measurement, data analysis to intelligent control, forming an intelligent closed-loop control of the artificial lift system. While reducing the accident rate, it has achieved maximum energy saving and efficiency improvement. This technology has achieved good results in field applications, with a power saving rate of more than 20%. This technology is an important part of oilfield intelligence and automation and is an important step to improve the level of delicacy management of single wells and enhance the digital construction of oilfields. At the same time, the technology does not involve any information such as electrical parameters, indicator diagrams, etc. Thus, it can be extended to other forms of oil production wells other than pumping wells to improve production efficiency, save energy and reduce consumption, and realize the safe and sustainable development of oil fields.