| 基于DSP的油井动态液面测量系统 |
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| 引用本文： | 郭鹏,张朝晖,弓志谦,张红宇.基于DSP的油井动态液面测量系统[J].测井技术,2007,31(1):42-44. |
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| 作者姓名： | 郭鹏 张朝晖 弓志谦 张红宇 |
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| 作者单位： | 北京科技大学信息工程学院,100083,北京;北京科技大学信息工程学院,100083,北京;北京科技大学信息工程学院,100083,北京;北京科技大学信息工程学院,100083,北京 |
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| 摘 要： | 为及时准确地测量油井液面深度,研制了以TI公司32 bit定点DSP芯片TMS320C2812为核心的油井动态液面测量系统.该系统由声波发生器、检波器和波形采集处理装置等3部分构成,利用声波发射信号与液面回波信号的时差和声速计算液面深度.它利用有效信号与干扰信号前沿跳变速度的显著差异,用差分算法处理原始测量信号以消除干扰,利用TMS320C2812内部的12 bit ADC和高性能的32 bit中央处理器进行信号采集和处理.该设备已在某油田使用.
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| 关 键 词： | 石油测井 动态测量 产油井液面深度 DSP 声回波 波形识别差分算法 |
| 文章编号： | 1004-1338(2007)01-0042-03 |
| 修稿时间： | 2006年12月18日 |
A Dynamic Liquid-Level Monitor for Oil-well Based on DSP |
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| GUO Peng,ZHANG Zhao-hui,GONG Zhi-qian,ZHANG Hong-yu.A Dynamic Liquid-Level Monitor for Oil-well Based on DSP[J].Well Logging Technology,2007,31(1):42-44. |
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| Authors: | GUO Peng ZHANG Zhao-hui GONG Zhi-qian ZHANG Hong-yu |
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| Affiliation: | School of Information Engineering, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | A dynamic liquid-level monitor based on a 32-bit fixed-point DSP chip TMS320C2812 was developed for monitoring depth of liquid surface in oil-producing well accurately and in time. The monitor composes of sonic emitter, geophone and signal acquisition/process device, utilizing acoustic velocity and time difference between emitted signal and echo signal from liquid surface to calculate the depth. The obvious difference of skip velocity between effective signal and interfering signal is used to eliminate the interference with an difference algorithm to process original measurement signal; and the 12-bit ADC and 32-bit CPU embedded in the TMS320C2812 chip are used to acquire and process signals. The monitor has been used in oilfield. |
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| Keywords: | petroleum logging dynamic measurement liquid-level in oil-producing well DSP echo difference algorithm for wave form recognition |
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