DDCO-2型双源距碳氧比能谱测井仪  

DDCO-2 dual-detector carbon/oxygen logging tool.

作　　者：董建华[1] 刘宪伟[1] 王晶[1] 

机构地区：[1]大庆油田测试技术服务分公司

出　　处：《石油仪器》2002年第6期21-23,61,共3页Petroleum Instruments

摘　　要：文章介绍了DDCO - 2型双源距碳氧比测井仪仪器结构、工作原理、高精度探测器和采集电路技术特点 ,并结合仪器响应和测井实例说明了仪器技术性能。实例表明 ,双源距碳氧比能谱测井资料真实地反映了地质规律的变化 ,长短源距碳氧比曲线在油水层变化明显。单次测井的碳氧比曲线有一定统计涨落 ,对目的层段进行重复测井或降低测井速度 ,可以降低碳氧比曲线的统计涨落 。The tool structure,operation principle,the high-resolution detectors and acquisition electronic features of the novel DDCO-2 dual-spaced carbon/oxygen logging tool are illustrated. The tool responses and field examples are also presented to show the tool performance. Case study shows that,logging curves recorded by the DDCO-2 tool can trace geological changes,and both near and far carbon/oxygen ratios deflect clearly between oil and water zones. Single pass C/O curves have higher statistic fluctuations. Several pass loggings or logging with rather low speed in the target intervals may reduce the statistic fluctuations,and improve measurement precision.

关 键 词：DDCO-2型 双源距 碳氧比能谱测井仪 仪器设计 

分 类 号：P631.83[天文地球—地质矿产勘探]