摘要
针对现有套管井检测与评价技术存在的缺陷,开展了进一步的导波成像方法与技术开发研究。对套管壁A0导波模式频散与泄漏衰减特性,以及泄漏衰减特性与管外粘结材料特性阻抗的关系进行了分析。在此基础上进行了不同粘结载荷钢板模型A0模泄漏衰减等特性以及脉冲回波厚度共振波特性的实验测试。结果显示,结合A0模式的衰减与管外粘结材料特性阻抗的测试结果,可有效定征管外粘结材料特性,进一步确定和成像管外环形空间水力联通特性。以此为基础,开发了耐温和耐压宽带超声换能器,以及检测与成像系统。通过模型井和实际井的测试,获得良好效果。
The research and development on imaging technique based on guided waves are further conducted to existing problems of current detecting and evaluation techniques in cased boreholes.The properties of dispersion and leaky attenuation of A0 mode in a steel plate,as well as the relation between the leaky attenuation and characteristic impedance of the materials bonded to the back surface of this steel plate,are analyzed.Further experimental testing for the leaky attenuation of A0 mode and the properties of thickness resonance mode are conducted for a steel plate,to which one side loaded with water and the other side bonded with different materials.The results show that the properties of materials in annular space between the steel casing and formation can be characterized effectively using the leaky attenuation of A0 mode and the characteristic impedance of the materials outside the casing obtained from thickness resonance measurement,and the hydraulic communication status can also be evaluated accordingly.Based on these results,we designed and developed the temperature and pressure resisting ultrasonic transducers,as well as detecting and imaging system for cased borehole logging and evaluation.The logging results in model testing wells agree well with the actual situations,and the good results also are obtained in cased boreholes in oilfields.
作者
胡文祥
王浩
马琦
陶爱华
刘西恩
HU Wenxiang;WANG Hao;MA Qi;TAO Aihua;LIU Xi’en(Institute of Acoustics,Tongji University,Shanghai 200092,China;Well Tech,China Oilfield Services Limited,Beijing 101149,China)
出处
《应用声学》
CSCD
北大核心
2020年第1期20-28,共9页
Journal of Applied Acoustics
基金
国家“十二五”重大专项课题(2011ZX05020-006-005)
国家自然科学基金项目(11374230,11774264)
关键词
套管井
超声导波
水泥胶结质量
超声成像
Cased borehole
Ultrasonic guided waves
Cement bond quality
Ultrasonic imaging
作者简介
通信作者:胡文祥(1964-),男,湖北天门人,教授,博士生导师,研究方向:超声检测理论与应用,E-mail:wxhu@tongji.edu.cn。
