一种高精度水力压裂电位监测系统的设计  

A Design of High Precision Hydraulic Fracturing Potential Monitoring System

作　　者：刘欢[1] 董浩斌 葛健[1] 詹晨希 

机构地区：[1]中国地质大学(武汉)地球物理与空间信息学院 [2]机械与电子信息学院,武汉430074

出　　处：《科学技术与工程》2014年第33期210-214,共5页Science Technology and Engineering

基　　金：中国地质科学院地球物理地球化学勘查研究所专项资金项目(WHS201202)资助

摘　　要：水力压裂技术起源于石油和天然气的增产,现已发展成为页岩气开采过程中一种有效的方法。设计了一种高精度电位监测系统,对页岩气开采水力压裂过程中地表电位的变化进行动态监测。该系统由24位ADC LTC2400与内嵌CAN控制器的主控芯片STM32F105构成高精度数据采集单元,并用16位DAC进行自然电位补偿,实现了对压裂电位的高精度采集和可靠传输。系统设计完成后进行了多项室内测试及室外测试。测试结果表明,系统实现了高精度、小型化、低功耗设计和便携式应用。Hydraulic fracturing monitoring technology originated in the oil and gas production,which has become an effective method of shale gas mining process. The design of high precision voltage monitoring system based on potential method for hydraulic fracturing monitoring technology was introduced. The system consists of high precision data acquisition unit and natural potential compensation unit. The former is consists of 24 bits ADC LTC2400 and main chip STM32F105 with embedded CAN controller,the latter uses 16 bits DAC to compensate natural potential,realizing the high precision acquisition and transmission for fracturing potential. Experimental results show that the system achieved high precision,miniaturization,low-power design and portable applications.

关 键 词：分布式电位法 数据采集 LTC2400 自电补偿 

分 类 号：TH763[机械工程—仪器科学与技术] TP274[机械工程—精密仪器及机械]