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1、高温永置式井下数据采集系统设计张庆军霍云华大庆油田力神泵业有限公司技术研发中心摘要：高温永置式井下数据采集系统是潜油电泵配套井下数据监测系统，能够实现对油井生产状态的实时监测，对采油系统的故障预测、提高潜油电泵运行效率、优化采油方案具有重要意义。为了使数据采集系统能够在井下高温环境中具备良好的可靠性，保证电子器件能够长期可靠运行，选用了高温电子元器件进行硬件电路设计，利用调理电路将采集信号调理为电路设计所需要的电压范围。为了实现井下多参数的检测，通过高温单片机程序控制模拟多路开关分时输出釆样信号，并将信号通过电压电流转换电路转换成电流信号，利
2、用三相电缆传输到地面，实现了地面对井下环境压力、环境温度、泵出口压力以及潜油电机绕组温度等参数的实时监测。通过对比分析井下、井上信号采集波形，井上采集的信号，得到井下采集数据的变化情况。模拟试验及现场应用表明，所设计系统能够满足潜油电泵实时监测相应数据的要求。关键词：潜油电泵;高温油井;数据采集;分时控制;远距离传输;实时监测;作者简介：张庆军（1983—）,男，硕士，工程师，主要从事电潜泵电气产品开发及应用工作。E-ma订:kingg209@163.com。DesignofHighTemperaturePermanentDown-HoleD
3、ataAcquisitionSystemZHANGQingjunHUOYunhuaTechnologyResearchandDevelopmentCenter,DaqingOilfieldPowerliftPumpIndustryCo.,Ltd.;Abstract：Hightemperaturepermanentlyinstalleddown-holedataacquisitionsystemisthesupplementarydatamonitoringsystemofelectriesubmersibleoilpump,toachieve
4、real-timemoniloringofoilwel1production;ilissignificantforpredictingthefauIts,improvingtheoperatingefficiencyofelectricsubmersibleoilpump,andoptimizingtheproductionplan.Inordertomakethedataacquisitionsystemcanbeusedindown-holehightemperatureenvironmenttoensuregoodreliability
5、,andtheelectronicdevicescanbeoperatedwithlong-termreliability,theadvancedhightemperatureelectroniccomponentsathomeandabroadareselectedfordesigningthehardwarecircuitry.Byusingtheconditioningcircuit,thevoltagerangesofcollectedsignalsareconditionedtotherangethatthecircuitrydes
6、ignrequests.Inordertodetectmultipleparametersofdownhole,throughprogrammablecontrolofsinglechipcomputer,thesamplingsigrialsareoutputbyanalogmultiplexerintimesequencing，andthevoltagesareconvertedintocurrentsignalsbyV/Aconversioncircuit,andtransmittedtothegroundby3-phasecables
7、,thustheundergroundenvironmenttemperature,pressure,outletpressureofthepumps,andthemotorwindingtemperature,etc.,canbemonitoredinrealtimeontheground.Bycomparingwindanalyzingthesignalweiveformscollectedfromdown-holeandontheground,itisfoundthatthedataonthegroundcanreflectthecha
8、ngesofdataofdownhole.TheSimulationexperimentsandfieldapplicationsshowthatthesystem
