%A CHEN Chao, YU Qiling, QIAN Yuxiang, LIU Pengtao %T Oil-sand Phases Flow Detection Based on Acoustic Emission Technology %0 Journal Article %D 2014 %J Science & Technology Review %R 10.3981/j.issn.1000-7857.2014.08.009 %P 58-63 %V 32 %N 8 %U {http://www.kjdb.org/CN/abstract/article_11430.shtml} %8 2014-03-18 %X The sand production problem in unconsolidated sandstone reservoir development has become increasingly prominent. To decrease the difficulty of oil well sand production management, moderate sanding techniques are usually used to maximize the benefit of oil and gas wells. Therefore, it is significant to develop oil-sand flow detection technology for timely and effective prediction and control of oil and gas well sand production. This paper proposes a method of flow detection in oil-sand phases based on acoustic emission technology. The method uses ultrasonic to measure the oil phase flow, also uses acoustic emission sensors to detect sand signal in oil flow, and build the experimental device of oil-sand flow detection, then analyzes the signal characteristics through specialized collection software. The results show that with other conditions remaining unchanged, acoustic emission power increases with the increase of sand mass and oil velocity, and decreases with increasing sand size; finally the acoustic emission power model of sand mass, sand size and oil velocity is established to obtain the sand flow information.