Optical Detection of Oil Bearing in Reservoir Rock: Terahertz Spectroscopy Investigation

Bao, Rima; Qin, Fen; Chen, Ru; Chen, Sitong; Zhan, Honglei; Zhao, Kun; Yue, Wenzheng

doi:10.1109/access.2019.2938027

Cited by 12 publications

(6 citation statements)

References 23 publications

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Section: Used Dynamicmentioning

confidence: 99%

Research on the Application of THz-TDS in Coal-rock Interface Recognition

Jiang,

Meng,

Yang

et al. 2023

Preprint

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The recognition of coal-rock interface is very crucial for the research in the intelligent production of coal mine. This study investigates the application of terahertz time-domain spectroscopy in the recognition of coal-rock interface, including the identification of coal-rock and coal-rock mixtures, as well as the accurate characterization of coal seam thickness. Terahertz detection was used to obtain the optical parameter information of the pressed pellets prepared by mixing two different kinds of coal and two kinds of rock. Based on the experiment results, the database was established for the identification of coal-rock interfaces in coal mining machines. The terahertz detection was performed on 10 different kinds of sheet anthracite with different thickness, and the terahertz spectra of coal seams with different thickness were simulated and calculated by using simulation software, which can accurately obtain the thickness of coal seams and provide effective mining thickness parameters for coal seam mining. Through the experiment and simulation, the terahertz time-domain spectroscopy technology has a promising application prospect in the identification of coal-rock interface.

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Section: Used Dynamicmentioning

confidence: 99%

Research on the Application of THz-TDS in Coal-rock Interface Recognition

Jiang,

Meng,

Yang

et al. 2023

Preprint

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“…Researchers such as Takenori Tanno et al [15] from Tohoku University and Akita University in Japan measured the transmission spectra of dry and non-dry coal powder and polyethylene mixed with laminated samples in the range of 1~5 THz to estimate the water content in coal. Bao [16] conducted an analysis of THz wave transmission properties in reservoir layers, revealing the transmission characteristics of THz waves in rocks, which is helpful to improve the efficiency of THz time-domain spectroscopy and enrich oil field exploration methods. In the realm of coal-rock identification, Wang Xin et al [17] from China University of Mining and Technology extracted various THz signal parameters from different kinds of coal and rocks, and proposed a classification method based on the absorption characteristics and refractive indices of different coal and rock materials, demonstrating the potential applications of THz technology in coal and rock identification.…”

Section: Introductionmentioning

confidence: 99%

Research on the Application of THz-TDS in Coal–Rock Interface Recognition

Jiang,

Meng,

Yang

et al. 2024

Applied Sciences

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The recognition of coal–rock interface is very crucial for research in the intelligent production of coal mines. To this end, the study investigated the application of terahertz time-domain spectroscopy in the recognition of coal–rock interface, including the identification of coal–rock and coal–rock mixtures, as well as the accurate characterization of coal seam thickness. Terahertz detection was used to obtain the optical parameter information of pressed pellets prepared by mixing two different kinds of coal and two kinds of rock. Based on the experiment’s results, a database was established for the identification of coal–rock interfaces for coal mining machines. The terahertz detection was performed on 10 different kinds of sheet anthracite with different thicknesses, and the terahertz spectra of coal seams with different thicknesses were simulated and calculated using simulation software. By comparing the two effective mining thicknesses, parameters can be provided for coal seam mining. The experiment and simulation show that the terahertz time-domain spectroscopy technology has a promising application prospect in the identification of coal–rock interface.

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“…However, because this dating method has age limitations, after obtaining the approximate age, it is necessary to analyze the geological evolution law together with other testing methods. Recently, the terahertz (THz) spectrum has also been used in geological investigations [24,25]. THz radiation can penetrate nonpolar materials and exhibits strong absorption when it encounters proteins, polar organics, and others [26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Terahertz Dating of Sedimentary Rocks

et al. 2022

Self Cite

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The depositional products of sedimentary rocks provide vital references for investigating the paleoenvironment, paleogeography, and tectonic evolution history. However, the detection methods of geological evolution are still relatively complicated, and how to combine geological age and geological evolution is confusing. Based on the sensitivity of terahertz waves to organic matter, a THz dating method was introduced for characterizing the geological age of sedimentary rocks. In this study, the geological evolution of Liujiang Basin was analyzed by using terahertz time domain spectroscopy (THz-TDS). According to the close relation between organic matter content and sedimentary environment, it can be inferred that the geological deposition in this area is affected by Marine cover. In addition, the refractive index of Ordovician sedimentary rocks is significantly higher than that of other sedimentary rocks. Based on these results, it is inferred that the sedimentary environment of the Liujiang Basin gradually changed from continental deposition to deep-water marine deposition from the Neoproterozoic to the Ordovician, and the sea water gradually retreated due to the crustal movement, resulting in a transition from deep-water deposition to continental inshore ocean facies deposition. These findings are highly consistent with the geological history of the study area. Combined with principal component analysis (PCA) technology, the relative geological age of sedimentary rocks can be divided. Our study con-firmed the reliability of this THz dating technique, which provides an effective way to study the geological evolution history of sedimentary rocks.

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Optical Detection of Oil Bearing in Reservoir Rock: Terahertz Spectroscopy Investigation

Cited by 12 publications

References 23 publications

Research on the Application of THz-TDS in Coal-rock Interface Recognition

Research on the Application of THz-TDS in Coal-rock Interface Recognition

Research on the Application of THz-TDS in Coal–Rock Interface Recognition

Terahertz Dating of Sedimentary Rocks

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