The Oil Content Inversion of Tar Sands by Spectroscopy
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RESEARCH ARTICLE
The Oil Content Inversion of Tar Sands by Spectroscopy Ruixue Fan1,2
•
Lixin Xing2 • Jun Pan2 • Xuanlong Shan3 • Guangjie Luo1 • Changwei Li4
Received: 29 May 2019 / Accepted: 28 July 2020 Ó Indian Society of Remote Sensing 2020
Abstract Oil content is an important parameter of tar sands resource evaluation and utilization. They are time-consuming, large toxicity solvent, complex operation, and sample ruining problems in traditional oil content determination method of tar sands. Reflection spectroscopy can provide a fast and nondestructive method in the analysis of material composition. Therefore, the oil content of tar sands can be calculated quickly and nondestructively by analyzing the characteristics of high spectral data of tar sands. But the bands of high spectral data are too many and the data are large redundancy. In order to improve the utilization rate of spectral data, the correlation coefficient was used as the measuring index for screening the sensitive band of hydrocarbons in tar sands. On the one hand, the oil rate inversion models were established by hydrocarbon spectral index constructed by the sensitive spectral bands of hydrocarbon. On the other hand, the absorption features were quantified by spectral absorption characteristic parameters and the inversion models of oil content were established. The results showed that the selected bands by correlation coefficient could be used to indicate the oil content; the spectral index models by first-order differential treatment were better than the original reflectance; the oil content inversion models constructed by the spectral absorption area of the seven characteristic absorption bands were superior to other forms. Keywords Tar sands Oil content Correlation analysis Hydrocarbon spectrum index Spectral characteristic absorption parameters
Introduction Tar sands are sandstone and carbonatite-containing hydrocarbons at or near the surface. As a kind of unconventional oil and gas resource, it plays a major role in the world energy structure because of its abundant resources (Clerici and Alimonti 2015). Oil content is an important parameter in the evaluation of tar sands resource, and it is also an important basis for judging whether tar sands & Ruixue Fan [email protected] 1
Guizhou Provincial Key Laboratory of Geographic State Monitoring of Watershed, Guizhou Education University, Guiyang 550018, China
2
College of Geo-exploration Science and Technology, Jilin University, No. 938 West Minzhu Street, Changchun 130026, Jilin, China
3
College of Earth Sciences, Jilin University, No. 2199 Jianshe Street, Changchun 130061, Jilin, China
4
ChinaRS Geo-informatics Co., Ltd, Binhai Hi-Tech Zone, Tianjin 300450, China
resource has development and utilization value. However, the traditional method of oil content determination is complicated and the solvent is very toxic. The principle and method of analyzing material composition by reflection spectra are gradually mature and have been widely used. Because tar sands not onl
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