The Experiment And Application On Water Content In Oil Well Based On Seperation Of Gas And Fluid

In this paper, we try to solve the pratical problems that the measurement of water cut in the oil-water-gas three phase oilfield is difficult and imprecise, centering on laboratory and field experiments to improve the coaxial transmission line water cut detector, and ultimately improve the test accuracy and oil recovery.For oil-water two phase flow oilfields, the coaxial transmission line water detector based on phase can accurately measure the flowrate and water cut of the deep profile. For the oil-water-gas three phase flow oilfields, although the floerate and water cut detector have nicer response character, with the gas flow gradually increase, the flowrate gradually increase and water cut reduce gradually. With the condensability of the gas, there are many factors that impact the interpretation of the model very complex. So it is difficult to be precise about the oil-water-gas three phase flowrate and the water cut,For this issue, concentrating diverter is reformed partly with the core technology of the coaxial line water detector based on phase. The operating characteristics of common confluent-liquid umbrella is compared with those of gas/liquid separation confluent-liquid umbrella and the new measurement method of oil well water cut based on the gas/liquid separation is studied by a series of experiments. And we can draw the conclusion that the gas and liquid can be separated by gas/liquid separation confluent-liquid umbrella, which decrease the impact of oil well gas for oil well liquid flow and water cut measurement, and improve the measurement accuracy. By laboratory and field experiments, improving the interpretation model, the impact of oil well gas for flow and water cut measurement is decreased gradually and verified.Thus,it can be seen, through the annular space water cut detect logging, the ameliorated petal type concentrating diverter can separate the gas and the liquid, so the influence which the gas produced in the oilfield act on the measurement of the flowrate and water cut greatly reduced. Compared with the common concentrating diverter, the ameliorated petal type concentrating diverter could increase the measuring precision, so it is more fit for the annular space water cut detect logging in the oil well test.