摘要
直接利用砂土释光信号寻找油气藏是油气勘查中的新思路。释光方法可以有效地找到环境辐射异常区,大大地提高了信噪比,突出不明显的异常区。随着信号累积时间的延长,含油区与非油区之间的样品释光强度差异也会由小变大。样品释光连续累积的时间长短主要取决于沉积环境的稳定性。
Using thermoluminescence(TL) and optically stimulated luminescence(OL) of soil samples as a direct evidence for an oil and gas reservoir, is a new approach to oil and gas exploration. This paper introduces not only the new results of fast TL surface reconnaissance in a wide area, but also the new reconnaissance experiment in a well and using OL. This is a new quest using OL instead of TL of a sample for scientific studies and development from 2D that is a plane on the ground surface to 3D that is a plane to different depths in a well. The unconventional radioactive area can be found triumphantly using this method. Though unconventionality which arose from oil and gas migrating is faint, the differences between the inside and outside of an oil and gas area are great and the oil/gas boundary is obvious with prolonged sediment time of soil,as a result of the particular cumulative effect of TL and OL.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
2003年第3期73-76,共4页
Marine Geology & Quaternary Geology
基金
国家自然科学基金资助项目(49972050)
关键词
油气勘查
放射性辐射
热释光
光释光
oil and gas exploration
radiation
thermoluminescence
optically stimulated luminescence
