Design And Study On Optical Fiber Probe Void Fraction Meter For Gas-liquid Two Phases Flow

With the deepening of oilfield development, an amount of associated gas isproduced during the oil well production, which has serious interference on thetraditional measurement instruments of fluid yield profile Logging, leading to has a largerdifference between measured results and actual results. How to effectively andaccurately measure the oil well production profile of gas-phase concentration hasbecome great problems in oil field production logging. Due to simple structure, highsensitivity and strong anti-electromagnetic interference ability, optical fiber sensorshave a potential application prospects in the production profile logging of oilfield andwidely concerned by the project researchers.Based on the differences of outputs profile gas liquid two-phase opticalrefractive index, fiber holding gas rate probe is designed, using fiber in the reflectionlight strong signal of strength achieved gas phase and liquid phase of discriminant,using light battery can achieved light signal to signals of into, through single tabletsmachine coding achieved data transfer, using what method way prepared software;through using Group State King on data for real-time trend curve of displayed, usingSQL2008achieved has real-time data storage, Leverage averaging SQL2008softwareprogram for calculation of gas holdup. Studies indicate that when data storage rate of100ms each time when the error rate reached10%, but if you use1s per acquisitionrate, error rate of1%, in the case of low frequency data acquisition with low error ratecharacteristics.