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Numerical modeling of the dynamic variation in multiphase CH_(4) during CO_(2) enhanced gas recovery from depleted shale reservoirs

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Frontiers of Earth Science 2021年第4期15卷 790-802页

作者： lijun cheng Ye ZHANG Jun LIU Zhaohui LU Chunlin ZENG Peng ZHAO Key Laboratory of Shale Gas Exploration(Ministry of Natural Resources) Chongqing Institute of Geology and Mineral ResourcesChongqing 401120China Institute of New Energy and Low-Carbon Technology Sichuan UniversityChengdu 610065China College of Architecture and Environment Sichuan UniversityChengdu 610065China

Regarding CO_(2)enhanced shale gas recovery,this work focuses on changes in the multiphase(free/adsorbed)CH_(4)in the process of CO_(2)enhanced shale gas recovery,by utilizing a rigorous numerical model with real geological *** work studies nine injection well(IW)and CH_(4)production well(PW)combinations of CO_(2)to determine the influence of IW and PW locations on the dynamic interaction of multiphase CH_(4)during 10000 d of CO_(2)*** results indicate that the content of both the adsorbed CH_(4)and free CH_(4)is strongly variable before(and during)the CO_(2)-CH_(4)*** addition,during the simulation process,the proportion of the adsorbed CH_(4)among all extracted CH_(4)phases dynamically increases first and then tends to stabilize at 70%-80%.Moreover,the IW-PWs combinations signifi-cantly affect the outcomes of CO_(2)enhanced shale gas recovery-for both the proportion of adsorbed/free CH_(4)and the recovery efficiency.A longer IW-PW distance enables more adsorbed CH_(4)to be recovered but results in a lower efficiency of shale gas ***,a shorter IW-PWs distance helps recover CH_(4)via CO_(2)injection if the IW targets the bottom layer of the Wufeng-Longmaxi shale *** numerical work expands the knowl-edge of CO_(2)enhanced gas recovery from depleted shale reservoirs.

关键词： CO_(2)-CH_(4)displacement free gas Longmaxi shale CH_(4)desorption numerical simulation

Quantitative discrimination of surface adsorbed NO_(x) species on CeO_(2) via spectrophotometry for SCR denitration investigation

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Journal of Rare Earths 2024年第6期42卷 1066-1072,I0003页

作者： Songil Sin Jiawei Ji lijun cheng Zhiwen Gu Chong Tan Kwangchol Ri Changjin Tang School of Environment Nanjing Normal UniversityNanjing210023China Department of Mining Engineering Kim Chaek University of TechnologyPyongyang999093Democratic People's Republic of Korea Laboratory of Mesoscopic Chemistry of MOE School of Chemistry and Chemical EngineeringNanjing UniversityNanjing20023China Institute of Chemical Engineering Hamhung University of Chemical EngineeringHamhungDemocratic People's Republic of Korea Jiangsu Province Engineering Research Center of Environmental Risk Prevention and Emergency Response Technology Nanjing210023China

CeO_(2)-based catalysts are widely investigated for selective catalytic reduction(SCR)of NO with *** of NO/O_(2) with CeO_(2) generally produces two surface species,i.e.,nitrates and ***,the explicit quantification of these two species is still ***,we reported that spectrophotometry characterization was effective in determining surface adsorbed NOx species on CeO_(2) by measuring the corresponding ions(NO_(2)-and NO_(3)^(-))dissolved in aqueous *** results show that both nitrate(-NO_(3))and nitrite(-NO_(2))species can be quantitatively evaluated and the accuracy is verified by calibrating with NOx-TPD *** transfer of adsorbed NOx from catalyst surface to aqueous solution is confirmed and the dissolution process can be accelerated by ultrasonic ***,useful information related to evolution of surface NOx species under various conditions(O_(2) treatment,different adsorption temperature and duration)and over different catalysts(Fe_(2)O_(3),MnO_(2) and MnOx—CeO_(2))are *** result of present study demonstrates the potential of spectrophotometry for quantitative discrimination of surface NOx species on CeO_(2) and other oxide-based materials,which is conducive to mechanism analysis of SCR reaction.

关键词： Quantitative evaluation Spectrophotometry analysis Nitrate species Nitrite species CeO_(2)catalyst NH_(3)-SCR

Evaluation Indexes for High Quality Shale Reservoir of Lower Silurian Longmaxi Formation in Southeast Chongqing

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Acta Geologica Sinica(English Edition) 2015年第A01期89卷 127-129页

作者： YUE Feng cheng lijun Key Laboratory of Shale Gas Exploration Ministry of Land and Resources Chongqing Institute of Geology and MineralResources Chongqing 400042 China Chongqing Engineering Research Center for Shale Gas Resource & Exploration Chongqing Institute of Geology andMineral Resources Chongqing 400042 China Chongqing Shale gas Research Center of State Key Laboratory of Petroleum Resource and Prospecting Chongqing400042 China

1 Introduction High quality shale reservoirs are considered eco- nomically recoverable. Determination of evaluation indexes for high quality shale reservoirs is crucial to shale gas exploration and exploitation in Chi... 详细信息

关键词： SHALE gas reservoirs NATURAL gas -- Prospecting POROSITY PERMEABILITY GEOLOGY

Pre-stack Simultaneous AVO Inversion and Lithology Prediction of Shale Gas Reservoir

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Acta Geologica Sinica(English Edition) 2015年第A01期89卷 359-360页

作者： WANG Fei cheng lijun XIE Qingming HUANG Zhenhua Key Laboratory of Shale Gas Exploration Ministry of Land and Resources Chongqing Institute of Geology and MineralResources Chongqing 400042 China Chongqing Engineering Research Center for Shale Gas Resource & Exploration Chongqing Institute of Geology andMineral Resources Chongqing 400042 China Chongqing Shale Gas Research Center of State Key Laboratory of Petroleum Resource and Prospecting ChongqingInstitute of Geology and Mineral Resources Chongqing 400042 China

Shale gas is mainly gathered in shale in adsorbed and in free forms . Shale gas reservoirs have the characteristics of self-generating and self-preserving, low density, low porosity and low permeability, which make th... 详细信息

关键词： SHALE gas reservoirs OIL shales PETROLOGY SEISMIC prospecting OIL well drilling

Noise Suppression for Micro-seismic on Gas Shale

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Acta Geologica Sinica(English Edition) 2015年第A01期89卷 367-368页

作者： XIE Qingming LI Dahua cheng lijun WANG Fei HUANG Zhenhua WANG Dayuan Key Laboratory of Shale Gas Exploration Ministry of Land and Resources Chongqing Institute of Geology and MineralResources Chongqing 400042 Chongqing Engineering Research Center for Shale Gas Resource & Exploration Chongqing Institute of Geology andMineral Resources Chongqing 400042 Chongqing Shale Gas Research Centre of State Key Laboratory of Petroleum Resource and Prospecting ChongqingInstitute of Geology and Mineral Resources Chongqing 400042

1 Introduction Gas shale reservoirs have the characteristics with low porosity and permeability, no air-water interface, self- storage, a large area of continuous accumulation, etc. With monitoring the hydraulic fracturing of gas shale reservoir, some key results, fracture direction, distribution, and other geometric features （crack length, width and height）, etc., would be forecasted with micro-seismic data produced by rock fracture. It provides real-time, accurate information for reservoir stimulation.

关键词： GAS reservoirs OIL shales ROCK noise MICROSEISMS HYDRAULIC structures SHALE gas ALGORITHMS

PMTDS： a computational method based on genetic interaction networks for Precision Medicine Target-Drug Selection in cancer

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Frontiers of Electrical and Electronic Engineering in China 2017年第4期5卷 380-394页

作者： Varshini Vasudevaraja Jamie Renbarger Ridhhi Girish Shah Garrett Kinnebrew Murray Korc Limei Wang Yang Huo Enze Liu Lang Li lijun cheng Department of Biomedical Informatics College of Medicine Ohio State University Columbus OH 43210 USA Department of Medical and Molecular Genetics School of Medicine Indiana University Indianapolis IN 46202 USA Department of Pediatrics hematology/oncology School of Medicine Indiana University Indianapolis IN 46202 USA Department of Medicine Biochemistry and Molecular Biology School of Medicine Indiana University Indianapoiis IN 46202 USA Pancreatic Cancer Signature Center School of Medicine Indiana University Indianapolis IN 46202 USA

Background： Precision medicine attempts to tailor the right therapy for the right patient. Recent progress in large- scale collection of patents＇ tumor molecular profiles in The Cancer Genome Atlas （TCGA） provides a foundation for systematic discovery of potential drug targets specific to different types of cancer. However, we still lack powerful computational methods to effectively integrate multiple omics data and protein-protein interaction network technology for an optimum target and drug recommendation for an individual patient. Methods： In this study, a computation method, Precision Medicine Target-Drug Selection （PMTDS） based on genetic interaction networks is developed to select the optimum targets and associated drugs for precision medicine style treatment of cancer. The PMTDS system includes three parts： a personalized medicine knowledgebase for each cancer type, a genetic interaction network-based algorithm and a single patient molecular profiles. The knowledgebase integrates cancer drugs, drug-target databases and gene biological pathway networks. The molecular profiles of each tumor consists of DNA copy number alteration, gene mutation, and tumor gene expression variation compared to its adjacent normal tissue. Results： The novel integrated PMTDS system is applied to select candidate target-drug pairs for 178 TCGA pancreatic adenocarcinoma （PDAC） tumors. The experiment results show known drug targets （EGFR, IGF1R, ERBB2, NRII2 and AKR1B1） of PDAC treatment are identified, which provides important evidence of the PMTDS algorithm＇s accuracy. Other potential targets PTK6, ATF, SYK are, also, recommended for PDAC. Further validation is provided by comparison of selected targets with, both, cell line molecular profiles from the Cancer Cell Line Encyclopedia （CCLE） and drug response data from the Cancer Therapeutics Response Portal （CTRP）. Results from experimental analysis of forty six individual pancreatic cancer samples show that drugs selected by PMTDS ha

关键词： precision medicine drug target algorithm pancreatic adenocarcinoma biological pathway cancer

Analysis on the Cause and Forecast Deviation of an Extreme Rainstorm in Changsha Urban Area

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Meteorological and Environmental Research 2023年第1期14卷 50-55,59页

作者： Yun FANG Tianyao SHEN Sheng ZHOU Jingjing PENG lijun cheng Changsha Meteorological Bureau Changsha 410205China Hunan Provincial Weather Modification Leading Group Office Changsha 410118China

Using NCEP reanalysis data,high-altitude and ground observation data,numerical model data,satellite and radar data,formation cause and forecast deviation of an extreme rainstorm process in Changsha urban area at night on June 9,2020 were *** results showed that(1)the extreme rainstorm process developed near the surface convergence line,with strong localization,short duration and large hourly rainfall intensity.(2)Under the high temperature and high humidity environment,the low-level cold advection and the hot low-pressure system interacted,and the potential con-vective unstable energy was released,and a strong convective weather was formed.(3)The convergence of water vapor in the lower layer and the strong upward movement provided sufficient water vapor for the *** low-centroid thunderstorm was the main reason for the extreme rainstorm.(4)The forecast deviation of the numerical model to the low-level shear line and the mesoscale convergence line was an important reason for the forecast deviation of the heavy rainfall area.

关键词： Extreme rainstorm Ground convergence line Unstable energy

Com parison of Amino Acids in Root Exudates of Flue-cured Tobacco Varieties with Different Resistances against Black Shank

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Plant Diseases and Pests 2015年第6期6卷 12-16,43页

作者： Yang Shunqiang Wang Ge Yang Huanwen Luo Jiagang cheng lijun College of Tobacco Science Yunnan Agricultural University College of Chemistry and Life Science Zhaotong University

In order to explore the differences of amino acids in root exudates and plant tissues, we selected four flue-cured tobacco varieties [ Yunyan 87 （ Ⅰ）, K326 （Ⅱ）, NC102（Ⅲ）, Hongda （Ⅳ）] as the test materials and studied the components and mass fractions of amino acids in rhizosphere soil, non rhizosphere soil, roots and leaves via high performance capillary zone electrophoresis. Ten amino acids were detected out from four varieties, including histidine, lysine, tryptophan, phenylalanine, valine, threonine, proline, serine, alanine and glycine. The mass fractions of amino acids in leaves and roots were higher than those in rhizosphere soil and non rhizosphere soil. In rhizosphere soil and non-rhizosphere soil, the mass fractions of lysine, phenylalanine, threonine, proline and glycine in susceptible varieties （ Ⅲ, Ⅳ） were higher than those in resistant varieties （ Ⅰ, Ⅱ）. In rhizosphere soil, the total amino acids successively were Ⅳ 〉 Ⅲ 〉 Ⅰ 〉 Ⅱ, and in non rhi- zosphere soil were Ⅲ 〉 Ⅳ 〉 Ⅰ 〉 Ⅱ. The total amino acids in roots of variety Ⅳ was the highest, up to 6 359. 195 μg/g. In leaves, the total amino acids in varieties I and If were higher than those in varieties IfI and IV. The results indicated that amino acids could secrete to rhizosphere via root secretion, and the compositions and mass fractions of amino acids varied with flue-cured tobacco varieties, thus the secretion amount of susceptible varieties was higher than that of resistant varieties.

关键词： Flue-cured tobacco Root exudates High performance capillary zone electrophoresis Amino acids

Different Fresh-keeping Effects of Sugar, Aspirin and Vc on Cut Rose Flowers

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Agricultural Biotechnology 2021年第1期10卷 19-22页

作者： Jianjun LIU lijun cheng Zebing SHU Shimin WANG Rui SHI College of Agronomy and Life Sciences Zhaotong UniversityZhaotong 657000China College of Chemistry and Chemical Engineering Zhaotong UniversityZhaotong 657000China

[Objectives] This study was conducted to develop environmentally-friendly effective vase solutions for cut rose flowers convenient for ordinary household use. [Methods] The vase life, flowering stage, flower diameter variation, petal water content, and soluble protein and malondialdehyde contents were determined on cut rose flowers regularly during the vase period, to study the fresh-keeping effects of the vase solutions prepared from such three components as sugar, aspirin and Vc according to L9(33) orthogonal table design on cut rose flowers during the vase period. [Results] 20 g/L white granulated sugar+460 mg/L aspirin+50 mg/L Vc was the best combination in this study. [Conclusions] This study provides a reference for the research on the fresh-keeping vase solutions of household cut rose flowers.

关键词： Sugar Aspirin Vc Cut rose flowers Household fresh keeping