海洋拖曳式<i>γ</i>能谱仪在渤海的应用

海洋拖曳式γ能谱仪在渤海的应用

基金项目:

国家863计划项目 820-03-01

北京市重点学科“地球探测与信息技术” XK104910598

1.
State Key Laboratory of Geological Processes and Mineral Resources; Geo-detection Laboratory of the Ministry of Education, Beijing 100083, China
2.
School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China
3.
Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China

摘要: 为了加快我国海洋矿产资源勘探与开发, 研制了中国第一台海底拖曳式多道γ射线能谱仪, 并在渤海地区进行了初次用于勘查油气田的测量试验, 结果表明: 仪器可以在现场测量海底沉积物、岩石等的天然放射性核素铀、钍、钾(⁴⁰K) 的含量, 在已知油气田上方放射性核素的含量出现相对低值异常, 本方法具有现场、快速和经济的特点.
- 海洋γ能谱仪 /
- 测量技术 /
- 数据处理 /
- 渤海 /
- 油气田
Abstract: In order to speed up the marine mineral exploration of China, the first sea-bed towed gamma-ray spectrometer was developed and it was tested in Bohai Ocean for oil exploration for the first time. The results show that the concentration of ²³⁸U, ²³²Th, ⁴⁰K of rocks and unconsolidated sediments on the sea floor can be acquired in-site. There is a relative low abnormity in the known oil field. It is a rapid and cheap in-site method to explore the marine resource.
- marine gamma-ray spectrometer /
- measuring technique /
- data processing /
- Bohai Ocean /
- oil and gas field

图 1 铀、钍、钾(⁴⁰K) 的γ射线能谱曲线

Fig. 1. The gamma-ray spectra of U, Th, ⁴⁰K

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图 2 海洋γ能谱测量系统整体结构示意图

Fig. 2. The sketch map of the marine gamma-ray spectrometer

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图 3 计算机屏幕监视探测器与海底接触状态

Fig. 3. The state of detector with sea-bed is monitored by computer

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图 4 L4线海洋γ能谱测量成果解释曲线

Fig. 4. The result curve of gamma-ray measurement for Line 4

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图 5 L5线海洋γ能谱测量成果解释曲线

Fig. 5. The result curve of gamma-ray measurement for Line 5

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