Recently, Xing Lanchang and Associate Professor Wang Bin, members of the oil and gas measurement and control technology academic team of the School of Control Science and Engineering, participated in the Journal of Petroleum Science and Engineering (JPSE), Journal of Natural Gas Science and Engineering (JNGSE). ) And IEEE Transactions on Geoscience and Remote Sensing (IEEE TGRS) published a series of research results, reporting the wide-band electrical detection of natural gas hydrates carried out by the research team in the interdisciplinary fields of detection and control, oil and gas engineering, and geoscience The latest developments in theoretical and technical research. Among the above-mentioned journals, JPSE, JNGSE and IEEE TGRS are all JCR Q1 journals. JPSE and IEEE TGRS are the Top journals in the second district of the Chinese Academy of Sciences (the latest edition in 2020). One and five (data from Web of Science).
Figure 1 Finite element numerical model
Figure 2 Low-frequency complex conductivity hydrate saturation model Figure 3 High-frequency dielectric constant measurement data and model
Experimental study on hydrate saturation evaluation based on complex electrical conductivity of porous media was published in JPSE. On the basis of the self-developed low-frequency complex conductivity test system for natural gas hydrate, a large amount of experimental test data of the hydrate formation/decomposition process was accurately obtained in real time, and the experimental data was analyzed in combination with the complex conductivity dispersion theory. Low-frequency complex conductivity characteristics of hydrate porous media, and further established three types of hydrate saturation evaluation models based on multiphase porous media conduction, low-frequency electrical polarization and data fusion mechanism. The authors of the paper are from the School of Control Science and Engineering, School of Earth Science and Technology, PetroChina Exploration and Development Research Institute, and Cranfield University in the United Kingdom. Associate Professor Xing Lanchang is the first author and corresponding author of the paper, and China University of Petroleum (East China) is the first signatory.
Numerical study on complex conductivity characteristics of hydrate-bearing porous media (Numerical study on complex conductivity characteristics of hydrate-bearing porous media) was published in JNGSE. First, based on the finite element method, a pore-scale numerical model for calculating the response of the complex conductivity of hydrate porous media is established; then, the effects of hydrate saturation, pore water salinity, and hydrate pore-scale microscopic distribution patterns on the complex conductivity parameters of porous media are analyzed. The influence rule of, and the quantitative relationship between complex conductivity parameter and hydrate saturation is established. The authors of the paper are from the School of Control Science and Engineering, School of Earth Science and Technology, PetroChina Exploration and Development Research Institute, Cranfield University in the UK and Huddersfield University in the UK. Associate Professor Xing Lanchang is the first author and corresponding author of the paper, and China University of Petroleum (East China) is the first signatory.
Integrated Dielectric Model for Unconsolidated Porous Media Containing Hydrate was published in IEEE TGRS. First, by monitoring the changes in the dielectric spectrum accompanying the formation and decomposition of hydrates in the simulated reservoirs, it is found that the hydrates in the reservoirs have the characteristics of dielectric fingerprints; then the corresponding dielectric volume mixing model is proposed to show that the microscopic occurrence and decomposition of hydrate reservoirs A theoretical connection is established between the macro-dielectric dispersion. The authors of the paper come from the School of Control Science and Engineering, the School of Earth Science and Technology and Cranfield University in the United Kingdom. Associate Professor Wang Bin is the first author and corresponding author of the paper, and China University of Petroleum (East China) is the first signing unit.
Natural gas hydrate (combustible ice) is a potential new energy resource with the characteristics of large reserves, high energy density, clean and pollution-free, and its exploration and development are highly valued by countries all over the world. my country has successfully implemented two rounds of trial mining of natural gas hydrates in sea areas, realizing a major leap from exploratory trial mining to experimental trial mining, and has achieved major landmark results in the process of industrialization. Characterization of physical properties of natural gas hydrate reservoirs, evaluation of storage parameters, and dynamic monitoring are key issues in the research of hydrate exploration and development technology. The team focused on the theory and technology of electrical detection/monitoring of gas hydrate reservoirs, independently developed a number of gas hydrate experimental test systems, created a multi-physics coupling numerical simulation simulation platform, and systematically studied the porous hydrates The electrical characteristics of the medium (simulating seabed sediments) in the wide frequency range from mHz to GHz, a reservoir parameter inversion model based on the theoretical basis of low-frequency electrochemical polarization, intermediate-frequency interface polarization, and high-frequency molecular polarization mechanism has been constructed. It will provide theoretical and technical references for my country's natural gas hydrate electrical exploration and logging data interpretation, reservoir quantitative evaluation, and dynamic monitoring of reservoir conditions during hydrate test production/production.
The team completed the above-mentioned series of research work relying on the Petroleum+ interdisciplinary special project of China National Petroleum Corporation's major scientific and technological project implemented by our school in 2020. The related research work in the early stage has also been awarded by the National Natural Science Foundation of China, the Natural Science Foundation of Shandong Province, the PetroChina Science and Technology Innovation Fund, the Key Research and Development Program of Shandong Province, the Science and Technology Program of Qingdao City, the Independent Innovation Research Program of the University, and the Key Laboratory of Natural Gas Hydrate of the Ministry of Natural Resources Funded by open funds and other projects, the related achievements have been published more than 40 research papers, 1 US patent authorized, 9 Chinese invention patents, and more than 20 graduate students (1 of whom obtained the admission qualification for the full scholarship of Cranfield University in the UK ).