The Research Of Fiber-optic Steam Quality Measuring Equipment In Steam Injection Oil Well Based On C8051

During exploitation oil in injecting steam well, it is needed to measure parameters of steam's temperature, pressure, and steam quality in well. Measuring all these parameters are used for knowing the location and distributing of oil layer. It is important to analyze the oil layer's status, exploit reasonably, increase oil extraction and economize energy sources. Among these parameters, measuring steam quality on line is always bottleneck and difficult to break through. This problem brings the attention of experts in all oil industry. People research the steam quality many years. Then, measuring methods for steam quality come out. Because vapor-water two-phase flow is very complex and phase changes each other, at present, measuring results lag in fact, are affected by man-made factors and can't be used to measure on line. It becomes urgent affair to measure steam quality continuously on line.In this paper, discuss measuring methods of steam quality in present. Bring forward new measuring method of steam quality which uses fiber-optics technique and analyze theory of this new method. Explain the demand of the steam quality measuring system. Introduce the design of fiber-optic steam quality equipment in steam injection oil well based on C8051. Discuss the design of the measuring equipment, configuration of the system, design of software and analysis of the measuring results.The equipment has the characteristic of high speed, low power wastage and small volume. The design of software is modularization. There are parameter measuring module, data receiving module, data sending module, wireless communication module, system check module and so on. The equipment takes tests in lab, steam boiler and injecting well in oil field. Analyze measuring data. The results accord with the status of steam quality in oil well. Finally, the project work in this paper is summarized, some suggestions on further development are presented and application foreground is prospected. This subject is scientific research project which are supported by Suzhou university 211 project.