随钻自然伽马测井仪研制  

Development of natural gamma tool used in logging while drilling

作　　者：姚文彬[1] 李辉[1] 尚捷[1] 赵飞[1] 张旭[1] 姜天杰[1] 

机构地区：[1]中海油田服务股份有限公司油田技术研究院,三河065201

出　　处：《电子测量技术》2013年第6期42-45,共4页Electronic Measurement Technology

基　　金：国家863计划海洋技术领域重大项目(SQ2010AA0920229001)随钻地层评价关键技术和设备研制

摘　　要：随钻自然伽马测井仪主要用于随钻测井过程中探测地层中的放射性元素发出的伽马射线,从而判断地层信息。该仪器设计采用了双核处理器,主处理器负责通信、存储、控制,协处理器独立完成脉冲计数,有效规避了国内外同类仪器所采用的定时采样计数方式必然存在的伽马脉冲漏计、测量精度偏低等现象。介绍了中海油田服务股份有限公司自主研制的随钻自然伽马测井仪,阐述了仪器的工程指标参数、测量原理、设计方法及现场应用情况。实际应用证明,该仪器探测范围、测量精度已达到国外同类仪器水平。Natural gamma logging instrument is mainly used for detection formation of radioactive elements of gamma ray in the process of logging while drilling,through it the stratigraphic information can be judged.The instrument design adopted a dual core processor,a main processor is responsible for the communications,storage and control,coprocessor used for pulse counting independently,effectively avoid the inevitable existence of gamma pulse leakage phenomenon and low measurement precision because adopted timing sampling counting mode like the domestic and foreign similar equipment.This article mainly introduced the natural gamma logging instrument used in logging while drilling that developed by China Oilfield Service Ltd.focusing on the engineering parameter,measurement principle,design method and field application about the instrument.The practical application shows that the measuring range and measurement precision about the instrument has reached the level of similar foreign instrument.

关 键 词：随钻测井 自然伽马测井 研制开发 

分 类 号：TE12[石油与天然气工程—油气勘探]