基于快速自然γ测井定位的定点能谱测井仪设计  

Spectrum Logging Instrument Design Based on Fixed-point Fast Natural Gamma-ray Log Location

作　　者：阳林锋[1] 庹先国[1,2] 李怀良[1] 刘勇[1] 沈统[1] 

机构地区：[1]地球探测与信息技术教育部重点实验室,成都610059 [2]地质灾害防治与地质环境保护国家重点实验室,成都610059

出　　处：《科学技术与工程》2013年第33期9791-9795,共5页Science Technology and Engineering

基　　金：国家自然科学基金重大科研仪器设备研制专项(41227802);国家杰出青年基金(41025015) 资助

摘　　要：针对当前轻便型小口径自然γ能谱测井仪的缺陷,提出了一种多晶体γ测井仪设计方法,实现快速定位异常井段并定点γ能谱分析。系统采用FPGA平台的IP软核、可动态配置功能模块、快速AD采集系统、并行双缓存采集存储等技术。下行测井实现多晶γ测量并定位,上行采用快速AD数字采集系统实现定点能谱分析。与小口径单晶γ测井相比,测井速度与纵向分辨率明显提高,小口径能谱测井的实用性增强。Aiming athe defectof the currenportable small calibeof natural gamma-ray spectral logging, multi crystal gammlogging instrumendesign method, to achieve faspositioning abnormal well section and poingammenergy spectrum analysiipresent. The system ibased on FPGplatform, using IP sofcore, dynamiconfigurable function modules, fasAD acquisition system, parallel double buffeacquisition and storage technolo- gy. Downlink logging complete muhicrystal gammmeasuremenand positioning, uplink using fasAD digital ac- quisition system complete the fixed energy spectrum analysis. Compared with the small diametesingle-crystal gam- ma-ray logging, logging speed and vertical resolution isignificantly improved, the practicability of small-diameteenergy spectrum logging ienhanced.

关 键 词：曲线合成 高分辨率 快速定位测井 快速AD 

分 类 号：P631.321[天文地球—地质矿产勘探]