脉冲中子全谱测井技术及其在冀东油田的应用  

Pulsed Neutron Spectral Logging Technology and Its Application in Jidong Oilfield

作　　者：吕俊涛[1] 

机构地区：[1]大庆油田有限责任公司测试技术服务分公司,黑龙江大庆163453

出　　处：《石油管材与仪器》2016年第3期53-57,共5页Petroleum Tubular Goods & Instruments

摘　　要：介绍了脉冲中子全谱测井仪(PNST)的结构、特点、测量原理及技术指标。脉冲中子全谱测井能同时完成双源距碳氧比、中子寿命、脉冲中子-中子和能谱水流测井功能。其测井资料不但能准确评价地层剩余油气饱和度、判断出水层位,还能识别低电阻率油层、气层及评价压裂效果等。该仪器在冀东油田已应用27井次,依据PNST测井资料增油降水措施有效率达95%以上。冀东油田现场应用的统计分析表明,该仪器具有测量剩余油饱和度精确性高,应用范围广等特点,能为高含水后期油藏监测,为堵水、补孔、压裂等方案的制订提供有效的资料。This paper introduces the pulsed neutron spectral tool’s structure,performance,measuring principe and technical specifications.Pulsed neutron spectral tool（ PNST） has the ability to carry out dual-spaced carbon / oxygen logging,neutron lifetime logging,pulse neutron-neutron logging and spectral water flow logging simultaneously. Its log interpretation can not only accurately assess the remaining oil saturations of formation,judge the water layer,but also recognize low resistivity oil and gas reservoirs,and evaluate fracturing effect. This tool was utilized in 27 wells in Jidong oilfield. With its oil saturation interpretation,95% workover jobs of water shut-off,re-perforation or well stimulation achieved the desired results. The statistical analyses of the application in Jidong oilfield have demonstrated that the tool has the advantage of high accuracy of remaining oil saturations,wide range of application,which helps provide effective means for dynamic monitoring of oilfield development of water plugging,reperforating and fracting in late development stage of oilfield development.

关 键 词：脉冲中子全谱测井仪 剩余油饱和度 压裂评价 气层识别 动态监测 

分 类 号：P631.817[天文地球—地质矿产勘探]