摘要
通过恰当地设计测井仪结构、中子发射时序以及能谱和时间谱采集方式,可以构成集碳氧比、中子寿命、氧活化3项功能于一体的脉冲中子伽马综合测井仪。与碳氧比测井仪相比,综合测井仪增加了实时测量地层热中子宏观俘获截面、近远探测器非弹性散射及俘获伽马计数率比值、连续氧活化等功能,测井资料能在岩性、泥质含量、孔隙度、饱和度、层位产水等方面提供更丰富的实用信息。
With proper designs of tool configuration, neutron burst sequence, as well as acquisition of energy and time spectra of gamma ray, an integrated pulsed - neutron gamma ray logging tool, which involves carbon/oxygen logging, neutron lifetime logging and oxygen activation logging, is constructed. Besides curves from a traditional carbon/oxygen tool, the integrated tool can simultaneously provide curves of the thermal neutron capture cross section of the formation, the count rate ratios of near/far inelastic, and capture gamma rays, and the oxygen activation. The plenty of data is applicable to evaluation of lithology, shale volume, porosity, saturation, and water entries.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2007年第6期124-126,130,共4页
Petroleum Geology & Oilfield Development in Daqing
关键词
测井
脉冲中子
碳氧比
中子寿命
氧活化
组合
应用
logging
pulsed neutron
carbon/oxygen
neutron lifetime
oxygen activation
combine
application
