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| 1 | A Quantitative Evaluation of Shale Gas Content in Different Occurrence States of the Longmaxi Formation: A New Insight from Well JY-A in the Fuling Shale Gas Field,Sichuan Basin显示文摘Comprehensive quantitative evaluation of shale gas content and the controlling factors in different occurrence states is of great significance for accurately assessing gas-bearing capacity and providing effective well-production strategies. A total of 122 core samples from well JY-A in the Fuling shale gas field were studied to reveal the characteristics of S_1 l shale,15 of which were selected to further predict the shale gas content in different occurrence states, which are dependent on geological factors in the thermal evolution process. Geological parameters were researched by a number of laboratory programs, and the factors influential in controlling shale gas content were extracted by both PCA and GRA methods and prediction models were confirmed by the BE method using SPSS software. Results reveal that the adsorbed gas content is mainly controlled by TOC, Ro, SSA, PD and pyrite content, and the free gas content is mainly controlled by S_2, quartz content, gas saturation and formation pressure for S_1 l in well JY-A. Three methods, including the on-site gas desorption method, the empirical formula method, and the multiple regression analysis method were used in combination to evaluate the shale gas capacity of well JY-A, all of which show that the overall shale gas content of well JY-A is in the range of 2.0–5.0 m^3/t and that the free gas ratio is about 50%, lower than that of well JY-1. Cause analysis further confirms the tectonics and preservation conditions of S_1 l in the geological processes, especially the influence of eastern boundary faults on well JY-A, as the fundamental reasons for the differences in shale gas enrichment in the Jiaoshiba area. | TANG Ling SONG Yan LI Qianwen PANG Xiongqi JIANG Zhenxue LI Zhuo TANG Xianglu YU Hailong SUN Yue FAN Shichao ZHU Lin | 2019 | Acta Geologica Sinica(English Edition)2019，93，2： | 7 |
| 2 | Microscopic Pore Structure and Heterogeneity Quantitative Characterization of Shale Reservoir-Take in Chongqing Southeast Longmaxi Shale Case显示文摘At present,shale gas exploration in China has made a significant progress,and we have established four statelevel shale gas demonstration areas that include the Fuling Jiaoshi dam,Changning—Weiyuan,Zhaotong and Yanchang.Shale gas production in last year has reached 13*108m3,which the yield of Fuling Jiaoshi dam reached | WANG Pengfei JIANG Zhenxue TANG Xianglu LI Zhuo YUAN Yuan ZHANG Chen | 2015 | Acta Geologica Sinica(English Edition)2015，89，A01： | 2 |
| 3 | The Main Control Factors for Shale Gas Accumulation and Exploration Problems in Shale Gas of South China显示文摘The shale gas exploration in China has achieved remarkable profits,and four national shale gas demonstration zones(Fuling Jiaoshiba,ChangningWeiyuan,Zhaotong,and Yanchang)have been established.Recently,nearly 400 drilling wells have been accomplished,including 143 vertical wells and 130horizontal wells.But the shale gas production | JIANG Zhenxue TANG Xianglu LI Zhuo JI Wenming GAO Xiaoyue YUAN Yuan WANG Pengfei | 2015 | Acta Geologica Sinica(English Edition)2015，89，A01： | 1 |
| 4 | Whole-Aperture Pore Structure Characterization and Its Effect on Gas Content of the Longmaxi Formation Shale in the Jiaoshiba Area,Sichuan Basin显示文摘In recent years,the pore structure of shale is studied through many qualitative and quantitative techniques.Quantitative methods mainly include the low temperature gas adsorption(N2 and CO2),the high-pressure mercury injection,the small angle X-ray scattering,and the nano CT,etc.The content and adsorption ability of adsorption gas are mainly obtained by CH4 isothermal | TANG Xianglu JIANG Zhenxue LI Zhuo YANG Peipei YANG Xiao LI Weibing HUANG Hexin HAO Jin | 2015 | Acta Geologica Sinica(English Edition)2015，89，A01： | 1 |
| 5 | Critical Controlling Factors of Shale Gas Enrichment and Accumulation,and Remaining Uncertainties显示文摘Shale gas exploration have yielded remarkable achievements recently in China,and four national demonstration areas for shale gas exploration and production have been established respectively as FulingJiaoshiba,Changning-Weiyuan,Zhaotong and Yanchang.During recent few years,nearly 400 wells have been drilled including 143 exploratory wells(vertical wells) | JIANG Zhenxue TANG Xianglu LI Zhuo JI Wenming YANG Wei YUAN Yuan WANG Pengfei XIONG Fengyang | 2015 | Acta Geologica Sinica(English Edition)2015，89，A01： | 0 |
| 6 | Functional characterization of disease/comorbidity-associated IncRNA显示文摘Background:Functional characterization of the long noncoding RNAs(IncRNAs)in disease attracts great attention,which results in a limited number of experimentally characterized IncRNAs.The major problems underlying the lack of experimental verifications are considered to come from the significant false-positive assignments and extensive genetic-heterogeneity of disease.These problems are even worse when it comes to the functional characterization in comorbidity(simultaneous/sequential presence of multiple diseases in a patient,and showing much wider prevalence,poorer treatment-response and longer illness-course than a single disease).Methods:Herein,FCCLnc was developed to characterize IncRNA function by(1)integrating diverse SNPs that were associated with 193 diseases standardized by International Classification of Diseases(ICD-11),(2)condition-specific expression of IncRNAs,(3)weighted correlation network of IncRNAs and protein-coding neighboring genes.Results:FCCLnc can characterize IncRNA function in both disease and comorbidity by not only controlling false discovery but also tolerating their disease heterogeneity.Moreover,FCCLnc can provide interactive visualization and full download of IncRNA-centered co-expression network.Conclusion:In summary,FCCLnc is unique in characterizing IncRNA function in diverse diseases and comorbidities and is highly expected to emerge to be an indispensable complement to other available tools.FCCLnc is accessible at https://idrblab.org/fcclnc/. | Jing Tang Yongheng Wang Jianbo Fu Xianglu Wu Zhijie Han Chuan Wang Maiyuan Guo Yingxiong Wang Yubin Ding Bo Yang Feng Zhu | 2021 | Quantitative Biology2021，9，4： | 0 |
| 7 | A New Method for Converting T_(2) Spectrum into Pore Radius显示文摘In this paper,a new method for converting the T_(2)(relaxation time) of NMR(nuclear magnetic resonance) into the pore radius is proposed.Combined with NMR and centrifugation experiments,the relationship between pore radius and T_(2) of the sample was established.The results show that the new method is more reasonable than the traditional method.When the sample was denser and the mercury saturation was lower,the pore distribution curve was obtained by traditional method had a worse agreement with mercury injection experiment,while pore distribution curve of the new method had a better agreement with the mercury injection curve,which reflected the greater advantage of the new method as the reservoir becomes denser.The new method can obtain all the pore information in the sample.The results show that the pores in tight sandstone are mainly consisted with mesopore and macropore,and the connectivity of macropore is better than that of mesopore.The new method can effectively characterize the full pore distribution and the seepage characteristics in different pores interval of tight reservoirs,which had a great significance to evaluate the recoverable resources of tight reservoir. | Fan Zhang Zhenxue Jiang Yuanhao Zhang Bin Hu Zaiquan Yang Yuhua Yang Xianglu Tang Hanmin Xiao Lin Zhu Yunhao Han | 2023 | Journal of Earth Science2023，34，4： | 0 |
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