1) prompt neutron removal lifetime
瞬发中子寿命
1.
Even though the k eigenvalue is very small,the α eigenvalue is close to zero in subcritical system with many hydrogen nuclei,which has a very long prompt neutron removal lifetime.
对于含氢介质较多的系统,即使k很小,由于瞬发中子寿命很大,α也会接近于0,因而α不能直观地表征系统的临界特性,而k比α更适合这样的系统。
2) prompt generation time
瞬发[中子]每代时间，瞬发[中子]每代寿命
3) prompt neutron lifetime
瞬发中子寿期
4) prompt(neutron)lifetime
瞬发[中子]寿期
5) neutron lifetime
中子寿命
1.
Through analysis and research on the principle of neutron lifetime logging, the factors which affect the accuracy and technique are dec-scribed in detail in this paper.
本文通过对中子寿命测井原理进行细致分析研究,从中探寻影响其准确度的因素;并详细描述了中子寿命测井工艺方法,在此基础上针对生产实际情况优选硼中子寿命测井,开展了油层的剩余油饱和度确定、堵水压裂层位确定、管外窜槽检测等方面的应用,在实际生产中取得了较好的应用效果。
2.
Gadolinium neutron lifetime logging (GNLL) is a new technique used for detecting reservoir performance, which is developed by the improvement of boron neutron logging.
钆中子寿命测井是在硼中子寿命测井改进中发展起来的一种油藏动态监测新技术,采用“测-渗-测”方式,通过向地层渗入钆溶液改变井筒附近地层水的俘获截面获取地层剩余油信息。
3.
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.
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。
6) Neutron lifetime logging
中子寿命
1.
Boron-injected neutron lifetime logging thchnology for evaluating cement channeling;
应用注硼(钆)中子寿命测井技术评价管外窜槽
2.
By applying Gadolinium-injected Neutron lifetime logging Technology and according to region characteristic,the multilevel logging-injecting-logging technique have developed,the law of imbibitions and diffusion is summarized and optimal logging time is determined.
采用注钆—中子寿命测井技术 ,根据区块特征开展多级“测—注—测”工艺研究 ,总结出钆酸渗吸扩散规律 ,确定最佳测井时间 ,根据区块油藏情况优化解释模型及参数 ,并结合油藏动、静态资料进行综合评价。
补充资料：瞬发中子
分子式：
CAS号：
性质：核裂变的初级碎片是远离β稳定线的中子核素，并且具有较大的激发能，会蒸发出一定数量的中子。从时间上讲，核裂变后10-15s内发射出的中子，弥为瞬发中子。
CAS号：
性质：核裂变的初级碎片是远离β稳定线的中子核素，并且具有较大的激发能，会蒸发出一定数量的中子。从时间上讲，核裂变后10-15s内发射出的中子，弥为瞬发中子。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条