Xiaoyu Li

China University of Petroleum, East China

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Hongfu Yuan

Beijing University of Chemical Technology

Xiaofei Sun

China University of Petroleum, East China

Jinchun Xie

Donghua University

Yanyu Zhang

China University of Petroleum, East China

Chunfeng Song

Beijing University of Chemical Technology

Wei Zheng

Huazhong Agricultural University

Chunfeng Song

Xi'an University of Science and Technology

Jiaming Cai

Tianjin University

Aiqin Hu

Collaborative Innovation Center of Quantum Matter

Xianhong Tan

China Academy of Space Technology

Cooperative Institutions

China University of Petroleum, East China

Chinese Academy of Sciences

China University of Petroleum, Beijing

University of Chinese Academy of Sciences

Tsinghua University

Guangxi University

State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation

Huazhong University of Science and Technology

University of Science and Technology of China

Minzu University of China

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An electrochemical sensor for the determination of phoxim based on a graphene modified electrode and molecularly imprinted polymer

Analytical Methods (2015)

Xuecai Tan Jiawen Wu Qi Hu Xiaoyu Li Pengfei Li

The electrochemical impedance spectra of Fe(CN)₆^3−/4− at NIP/graphene/GCE (a), MIP/GCE (b), the bare GCE (c), and MIP/graphene/GCE (d).

Molecularly imprinted polymer

Electrochemical gas sensor

Phoxim

10.1039/c5ay00945f

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Citations (30)

On the rapid and non-destructive approach for barbiturates, benzodiazepines, and phenothiazines determination and differentiation using spectral combination analysis and chemometric methods

Microchemical Journal (2020)

Xinlong He Jifen Wang Xuewei Teng Linyuan Fan Xiaoyu Li

Sedative/hypnotic

10.1016/j.microc.2020.105853

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Citations (12)

Preparation of Modified Colloidal Gas Aphrons and Analysis of the Oil Displacement Effect

Applied Sciences (2020)

Shaohua You Xiaofei Sun Xiaoyu Li

Colloidal gas aphrons (CGAs) offer some advantages in improving oil recovery, but resin and asphaltene deposition problems still occur in CGA flooding. Based on this phenomenon, a new modified colloidal foam system is developed by incorporating a modifier in CGA preparation. The results indicate that the modified CGAs prepared by adding foaming agent sodium dodecyl sulfate (SDS) (concentration: 5 g/L) and GXJ-C (a CGAs modifier from a light fraction of petroleum; concentration: 0.1 g/L) attained the best performance. Oil displacement experiments show that modified CGA flooding had a better effect than water or CGA flooding. There are two important mechanisms via which modified CGAs enhance oil recovery, including decreasing the interfacial tension and enhancing the heavy components in the recovered oil. The developed modified CGA system attained a good oil displacement effect, which is of guiding significance to further improve the oil displacement efficiency and application of foam flooding.

Asphaltene

Sodium dodecyl sulfate

10.3390/app10030927

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Study on the Uniform Steam Injection Method of Horizontal Wells during the SAGD Process in Heavy Oil Fields

Energy & Fuels (2023)

Xiangyu Wang Chenwei Liu Yunlong Zhao Hongjie Sun Xiaoyu Li

Uniform steam chamber expansion over the whole well length significantly affects the development of steam-assisted gravity drainage (SAGD) in oil reservoirs. Currently, most research is focused on optimizing the steam suction profile through the production wells. While uniform steam injection (USI) along horizontal wells is often neglected and studied in only a few reports, it is a critical technique to enhance oil recovery. Herein, a novel type of USI-SAGD process using an injector tube with variable density perforation was developed. The performance of USI-SAGD was evaluated based on a custom-built physical experimental setup and numerical simulation. The experimental findings demonstrate that the USI-SAGD method exhibits a more homogeneous steam injection profile by mitigating the accumulation of wellbore fluids and, thereby, making the steam injection profile more uniform. This resulted in a notable increase of 22.6% in the uniformity of steam chamber development and an 8.02% increase in oil recovery compared with the single-point SAGD method under identical experimental conditions. Numerical simulations indicate that USI-SAGD effectively regulates the outflow profile and mitigates the decrease in steam quality caused by steam overlay along the injector. As a result, the method achieves an even distribution of the pressure and steam quality, which corresponds to an improvement in steam injection uniformity. The perforating point number and distribution were optimized, which indicated an optimal critical value of 30 perforating points per 1000 m wellbore and a 4:6 distribution ratio for improving the uniformity of the steam chamber and enhancing the production performance in the horizontal well. This work proves that USI-SAGD is efficient in improving heavy oil production and has great potential for use in field applications.

Steam injection

Steam-assisted gravity drainage

Vapor quality

Oil well

Wellbore

Perforation

10.1021/acs.energyfuels.3c03528

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Citations (1)

Synergistic of Metal-Support Interactions and Hydrogen Spillover on Zeolite Catalyst for Hydrogenation of Ethylene Tar to High-Density Aviation Fuels

Xiaoqi Zhang Li-Ying Xie He Liu Yi-Qiang Qi Kunyu Xu

Hydrogen spillover

Spillover effect

tar (computing)

Aviation fuel

10.2139/ssrn.5110251

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Citations (0)

Determination of Diphenylamine in Powder by Pure Diphenylamine as External Standard Substance

Advances in engineering research/Advances in Engineering Research (2015)

Bin Zhang Xiaoyu Li Ran Xiong

The content of diphenylamine in standard powder is determined by pure diphenylamine as external standard substance in this paper, the value of relative deviation is in the range of ±3%.The method was applied to the analysis of samples of powder, the vales of RSD (n=6) were found to less than 3%，and the results obtained were in conformity with those by standard powder method .The method has compensated the shortcomings by the standard powder as external standard substance.The method has showed the features of simple and rapid in operation, good in safety, and high in precision and accuracy.

Diphenylamine

Relative standard deviation

10.2991/ipemec-15.2015.123

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[Rapid quantitative analysis of hydrocarbon composition of furfural extract oils using attenuated total reflection infrared spectroscopy].

PubMed (2014)

Na Li Hongfu Yuan Aiqin Hu Wei Liu Chunfeng Song

A set of rapid analysis system for hydrocarbon composition of heavy oils was designed using attenuated total reflection FTIR spectrometer and chemometrics to determine the hydrocarbon composition of furfural extract oils. Sixty two extract oil samples were collected and their saturates and aromatics content data were determined according to the standard NB/SH/T0509-2010, then the total contents of resins plus asphaltenes were calculated by the subtraction method in the percentage of weight. Based on the partial least squares (PLS), calibration models for saturates, aromatics, and resin+asphaltene contents were established using attenuated total reflection FTIR spectroscopy, with their SEC, 1.43%, 0.91% and 1.61%, SEP, 1.56%, 1.24% and 1.81%, respectively, meeting the accuracy and repeatability required for the standard. Compared to the present standard method, the efficiency of hydrocarbon composition analysis for furfural extract oils is significantly improved by the new method which is rapid and simple. The system could also be used for other heavy oil analysis, with excellent extension and application foreground.

Attenuated total reflection

Asphaltene

Repeatability

Chemometrics

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Citations (1)

[Study of the over-fitting in building PLS model using orthogonal signal correction].

Xian Zhang Hongfu Yuan Zheng Guo Chunfeng Song Xiaoyu Li

In the present paper, the over-fitting phenomenon in building PLS model using orthogonal signal correction (OSC) was studied through establishment of quantitative calibration models for the peanut oil content in blending edible oils, and for the dimethylsulfoxide concentration in water solution. The cross validation results and the predication results of PLS models using OSC and without using OSC were compared to evaluate the effectiveness of OSC for improving the performance of PLS1 model. The results show that the application of OSC to PLS modeling will lead to an over-fitting phenomenon. According to the principles of their algorithms, when OSC and PLS are used together, the signals which are not correlated to the interested property are removed twice from the raw spectra. This leads to deleting the parts of useful information in spectra, and to spoiling the predictive ability of PLS models to some extent.

SIGNAL (programming language)

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Citations (3)

Nondestructive Detection of Blackheart in Potato by Visible/Near Infrared Transmittance Spectroscopy

Journal of Spectroscopy (2015)

Zhu Zhou Zeng Songwei Xiaoyu Li Jian Zheng

The possibility of using visible/near infrared (Vis/NIR) transmission spectroscopic technique in the 513–850 nm region coupled with partial least squares-linear discriminant analysis (PLS-LDA) and other chemometric methods to classify potatoes with blackheart was investigated. The discrimination performance of different morphological correction methods, including weight correction, height correction, and volume correction, was compared. The results showed that height corrected transmittance has the best performance, with both calibration and validation sets having a success rate of 97.11%. Out of 1800 wavelengths, only six wavelengths (711, 817, 741, 839, 678, and 698 nm) were selected as the optimum wavelengths for the discrimination of blackheart tubers based on principal component analysis (PCA). The data analysis showed that the overall classification rate by PLS-LDA method decreased from 97.11% to 96.82% in calibration set and from 97.11% to 96.53% in validation set, which was acceptable. The importance of these conclusions may be helpful to transfer Vis/NIR transmission technology from laboratory to industrial application in nondestructive, real-time, or portable measurement of potatoes quality.

10.1155/2015/786709

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Citations (29)

Experimental investigation on supercritical multi-thermal fluid flooding using a novel 2-dimensional model

Energy (2023)

Xiaoyu Li Xiaofei Sun Jiaming Cai Qingquan Zhang Xianggang Pan

Steam injection

Water flooding

10.1016/j.energy.2023.129136

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Citations (5)