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- acoustic velocity logging 声速测井
- The status for acoustic variable density log in Daqing Oilfield is introduced including applied techniques and logging tool levels. 介绍了大庆油田声波变密度测井的现状、应用的技术和仪器的水平。
- It is an effective way in integrated navigation by using Strapdown Inertial Navigation System(SINS),GPS and Doppler Velocity Log(DVL). 利用捷联惯导(SINS)、GPS定位系统和多普勒计程仪(DVL)进行组合导航是水下运载器导航定位的有效方式。
- The Doppler Velocity Log(DVL) simulation system for the underwater vehicle has been built in this paper. 本文建立了水下机器人的多普勒测速声纳仿真系统。
- In all these methods, acoustic velocity thermometry based on the acoustic travel time is a better one with a wider use. 而在声学测温的各种方法中，基于声波传播时间的声速测温方法又是一种比较好的、应用更广泛的方法。
- In all these methods,acoustic velocity thermometry based on the acoustic travel time is a better one with a wider use. 而在声学测温的各种方法中,基于声波传播时间的声速测温方法又是一种比较好的、应用更广泛的方法。
- Compared to doppler velocity log for the same depth of water, it enables the use of smaller transducer and smaller transmitting power. 在相同的工作深度要求下与多普勒计程仪比较，声相关计程仪可以利用较小的换能器和以较小的功率发射信号。
- The diameter of blowdown stand pipe is designed taking 0.5 times of acoustic velocity at the pipe mouth. 按照放空气体管口流速为0．5倍音速设计放空立管直径，根据火炬热辐射强度对不同环境的影响设计放空立管高度。
- The linear relationship between the nodularity and acoustic velocity has been accepted. 球墨铸铁的球化率随超声声速的线性变化关系已经被人们所认同。
- Application of CPLD in Well Logging Tool. CPLD在测井仪器中的应用
- A comparision was made between Doppler Velocity Log (DVL)and Correlation Velocity Log (CVL)in their suitability for AUV.It is obvious that CVL is suitable. 本文从多普勒速度计程仪（DVL）和相关速度计程仪（CVL）两种速度传感器的工作机理出发，找出了CVL系统的独特优点，以此为AUV导航用速度传感器采用CVL方案的依据。
- Phased-array Doppler Velocity Log put forward in this paper adopt Phased-array technique to form several symmetrical beams for the transceiver, overcoming such defects ultimately. 本文提出的相控阵多普勒速度计程仪克服了以上缺点,采用相控技术形成多个对称波束。
- Application of CTS telemetry technology in the acoustic frequency and spectrum logging tool. CTS遥传技术在声频谱测井仪器中的应用
- And the way overcomes the defects of the measuring accuracy of the traditional measuring instruments affected by the change of acoustic velocity. 并根据水声信道中多途效应时延估计模型,利用时延估计技术和互相关运算进行了计算机模拟。
- SBT,MAK-2,GR-DEN and acoustic log tools in china have .some shortcomings in evaluation of cementing bond quality, such as poor practicability and long time interpretation, etc. SBT、MAK-2、伽马密度测井仪和国产各种声波密度仪器在固井质量评价过程中存在着实用性差及处理解释时间长等缺陷。
- In this paper, a new acoustic transducer of SBT sonic logging tool is introduced. 测井仪器有不同的种类,使用的测量原理、刻度方法和测量手段也各不相同。
- The acoustic velocity, compressive strength and the Young's modulus of the rock samples under different conditions were obtained. 利用回归分析法,建立了5种岩石的力学性质和声学性质随围压变化的数学模型。
- Velocity is one of the important acustic parameters of liquid. Ultrasonic-pulse reflection method is a suited technique of measring the acoustic velocity of liquid. 液体声速是液体声学的重要参数之一 ,获得液体声速常用的方法是脉冲反射法 ,文章提出一种新的测量方法 ,即共振声谱法。
- The characteristics of the piezoquartz transducers are important factors to improve performance of the acoustic logging tool. 压电晶体换能器性能是影响声波测井仪器质量的重要因素之一。
- A revising method is proposed,in which the velocity of Doppler velocity log(DVL) is used to aid the alignment of strap-down inertial navigation system with DVL and the integrated navigation based Kalman filter. 提出了利用多普勒测速仪辅助捷联惯导系统动基座对准以及基于卡尔曼滤波的组合导航方案;并对该导航方案水上实验的结果进行了分析.
