The Water Cut And Flow Measurement Technology Research

In the petroleum industry, the oil-gas-water three-phase flow which is known as its complex and changeable flow patterns and great measuring difficulties, has been concerned by many experts and scholars both at home and abroad. The accurate measurement of the three-phase flow parameters is the key technology for the oilfields to optimize their production and realize the smart well, it is the important basis for the characteristic analysis of the petroleum reservoir and realizing the protective rational mining, and it also has significant meaning and value to the production guidance.In the paper, the two important parameters water cut and flow measurement of the oil-gas-water three-phase flow are set to be the main research contents. The main research purpose is to develop a kind of instrument for the measurement of the water cut and flow of the three-phase flow. The measurement instrument should be of small size, low cost, high temperature and high pressure resistance and anti-corrosion, and can be used both on the ground and underground. After the analysis and research of the multiphase flow measurement technology both at home and aboard, and considering the high water cut period of the domestic oil mining and their demand, designed the implementation of water cut and flow electrode measurement system based on the conductance measurements technology. The instrument for the water cut and flow measurement was made, and it can be used on the ground and down hole in our domestic oil industry. The tests of the instrument was carried at the indoor three-phase test platform and oilfield industrial site.After a great deal of indoor and outdoor tests, confirmed that the developed electrode measurement system instrument for the water cut and flow measurement has good performance and reasonable structure, and the implementation is right and feasible. It has been applied in the national major project of "Deep water flow measurement system research", and will play an important role in the down hole water cut and flow measurement system research and performance test.