钻杆中声波传输特性测试  

Transmission characteristics test of acoustic wave in drill pipe

作　　者：马西庚[1] 李超[1] 柳颖[1] 

机构地区：[1]中国石油大学信息与控制工程学院,山东东营257061

出　　处：《中国石油大学学报（自然科学版）》2010年第4期70-74,共5页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：山东省科技攻关重大专项(2005GG2107002)

摘　　要：在实验室进行钻杆声波传输特性测试试验。使用激振器和自制激励装置作为激发源、特制的钻杆短节为传输信道,研究声波在钻杆充气、充水、压沙袋3种状态下的传输特性;利用扫频信号激励钻杆,确定钻杆中声波的最佳传输频率点,得出钻杆中声波衰减的经验公式。结果表明:钻杆接箍和声波频率是造成声波衰减的主要因素;纵波是相对较好的信息传输载体;钻杆信道通带为非平滑的梳状滤波器结构。The experiment testing the drill pipe＇s acoustic wave transmission characteristics in the laboratory was done. The vibration generator and homemade excitation device were used as the excitation source and the special drill pipe nipple as transmission signal path. The acoustic wave transmission characteristics were researched under three different conditions of drill pipe filling air, water and sandbag. The sweep-frequency signal was used to excite the drill pipe, and the optimal acoustic wave transmission frequency was ascertained in the drill pipe. The empirical formula of the acoustic wave＇s attenuation was given in the drill pipe. The results show that the drill pipe coupling and acoustic wave frequency are the main factors of acoustic wave＇s attenuation, and longitudinal wave is better carrier to transmit information. The drill pipe signal path passband of non-smooth, comb filter structure was verified.

关 键 词：钻杆 测试试验 声波传输 传输特性 

分 类 号：TE927[石油与天然气工程—石油机械设备]