井下过套管超声波无线能量传输系统研究  

On Downhole Through Casing Wireless Energy Transmission System of Ultrasonic Wave

作　　者：王婷婷 魏勇[1] 余厚全[1] 陈强 刘国权 WANG Tingting;WEI Yong;YU Houquan;CHEN Qiang;LIU Guoquan(Electronics&Information School, Yangtze University, Jingzhou, Hubei 434023, China;Production Logging Center, China Petroleum Logging CO. LTD., Xi’an, Shaanxi 710077, China)

机构地区：[1]长江大学电子信息学院,湖北荆州434023 [2]中国石油集团测井有限公司生产测井中心,陕西西安710077

出　　处：《测井技术》2021年第2期138-142,共5页Well Logging Technology

基　　金：国家科技重大专项课题“多维高精度成像测井系列”(2017ZX05019001);教育部科技发展中心产学研创新基金项目“智慧教学管理系统在计算机编程及软件仿真数学中的研究与实现”(2018A03009)。

摘　　要：针对中国石油行业数字化油田需求,可将传感器永久埋入井中,用于长期监测生产井中井下流体和套管附近地层状态,但井下永久传感器供电电池的电量会随时间推移而消耗殆尽。如果能够周期性地通过套管给电池充电,将能够较好地解决电池的充电问题。提出了井下过套管超声波无线能量传输系统模型,论述了金属厚度、超声波频率和声压透射率三者之间的关系。设计了井下过套管超声波无线能量传输系统的发射能量模块和接收能量模块,搭建了无线能量传输系统实验装置,并开展了4组不同厚度下能量传输实验。实验结果表明,该系统能够实现井下过套管无线能量传递,在接收端可获得瞬时最大接收功率0.984 W,为井下永久电子测量设备的供电提供了一种解决方案。In response to the digital oilfield demand proposed by the Chinese petroleum industry,sensors can be permanently embedded in the well for long-term monitoring the underground fluid and formation status near casing,but the energy of the downhole permanent sensor battery will be exhausted over time.If the battery can be charged periodically through the bushing,it will be able to solve the battery charging problem better.This paper proposes a downhole through casing wireless energy transmission system of ultrasonic wave model for above problem,and discusses the relationship among metal thickness,ultrasonic frequency and sound pressure transmittance.The transmitting energy module and the receiving energy module of the downhole through casing wireless energy transmission system of ultrasonic wave are designed,the wireless energy transmission system experimental device is built,and four groups of energy transmission experiments under different thicknesses are carried out.The experiment results show that the system can realize the wireless energy transmission through the casing downhole,and the instantaneous maximum received energy at the receiving end is 0.984 W,which provides a solution for the power supply of permanent downhole electronic measurement equipment.

关 键 词：生产测井 流体监测 无线能量传输 金属套管 永久传感器 充电装置 

分 类 号：P631.84[天文地球—地质矿产勘探]