In-situ heating conversion is the most practical recovery method for lacustrine low-to-medium maturity shale oil.However,the energy output-input ratio must exceed the economic threshold to achieve commercial developme...In-situ heating conversion is the most practical recovery method for lacustrine low-to-medium maturity shale oil.However,the energy output-input ratio must exceed the economic threshold to achieve commercial development.This paper systematically investigates the mechanism of super-rich accumulation of organic matter in continental shale,sweet spot evaluation,optimal heating windows,and appropriate well types and patterns from the perspectives of enhancing energy output and reducing energy input.(1)The super-rich accumulation of organic matter in lacustrine shale is primarily controlled by the intensity,frequency,and preservation of external material inputs,and is related to moderate volcanic and hydrothermal activities,marine transgressions,with total organic carbon content greater than or equal to 6%.(2)The quality of organic-rich intervals is related to the type of source material and hydrocarbon generation potential.The in-situ conversion-derived hydrocarbon quality index(HQI)is established,and the zones exhibiting HQI>450 are defined as sweet spots.(3)Considering the characteristics of the organic matter conversion material field and seepage field,the temperature interval 300-370℃is recommended as the optimal heating window for the Chang 7_(3)sub-member of the Triassic Yanchang Formation in the Ordos Basin.Based on the advantages of thermal conductivity,permeability,and hydrocarbon expulsion efficiency along the bedding direction during in-situ heating,the“horizontal well heating+vertical well development”scheme is proposed,which has demonstrated significant enhancement in both recovery factor and energy output-input ratio,making it the optimal in-situ conversion process.The research findings provide a theoretical and technical foundation for the economical and efficient development of low-to-medium maturity shale oil.展开更多
HAGI STUDIO株式会社一直以东京谷中地区为营业据点展开活动。截至目前(2018年4月)为止,在谷中地区内负责管理运营着'最小文化复合设施——H A G I S O''街宿——H A N A R E''食物邮电局——TAYORI''街中...HAGI STUDIO株式会社一直以东京谷中地区为营业据点展开活动。截至目前(2018年4月)为止,在谷中地区内负责管理运营着'最小文化复合设施——H A G I S O''街宿——H A N A R E''食物邮电局——TAYORI''街中教室——KLASS'等几家商铺,预计今年6月将接手运营相同地区创业15年的汉堡店'Rainbowkitchen'。这些设施的共同点是有效开发利用了现有的建筑设施。另外从策划到设计,再到管理运营等整个流程全是由我们公司整体负责。展开更多
"Inherited the traditional education"is the main mode of talent cultivation of traditional Chinese medicine and effective way,in order to better promote the heritage and development of TCM cause,1et"fam..."Inherited the traditional education"is the main mode of talent cultivation of traditional Chinese medicine and effective way,in order to better promote the heritage and development of TCM cause,1et"famous old Chinese medicine studio"play in training talents,academic communication,scientific research,service people should have a role to promote the region's traditional Chinese medicine clinical ability,our college of traditional Chinese medicine(TCM)based on a studio conducted to old with the new educational background education,the author use the PDCA circulation method in management of"famous old Chinese medicine studio"education"shicheng"quality management is improved and exploring,significantly improved the team of teachers and students both sides of teaching and learning satisfaction,At the same time,it has effectively promoted the overall level of TCM medical treatment in our hospital.展开更多
Digital rock analysis(DRA)is fundamental for geo-energy research,enabling the characterisation of microstructures for applications like hydrocarbon recovery,carbon storage,and groundwater modelling.Although 2D CT imag...Digital rock analysis(DRA)is fundamental for geo-energy research,enabling the characterisation of microstructures for applications like hydrocarbon recovery,carbon storage,and groundwater modelling.Although 2D CT images provide valuable pore-scale data,the scarcity of real-world datasets limits the effectiveness of advanced analysis.Generative AI presents a promising approach for synthesizing high-quality rock images but faces key challenges,including high computational demands,insufficient evaluation metrics,and the trade-off between image fidelity and diversity.To address these limitations,this study proposes the use of Low-Rank Adaptation(LoRA)for fine-tuning stable diffusion models,significantly reducing computational requirements while maintaining image quality.A systematic investigation was conducted to evaluate the influence of LoRA training parameters,including rank and learning rate,on the quality of generated images.Image outputs were assessed using both standard generative metrics,such as Kernel Inception Distance(KID),and domain-specific metrics,including porosity,pore count,and pore area distributions.The optimised LoRA-enhanced diffusion model achieved a 92.6% reduction in KID relative to baseline models,while also improving inference speed.Building on these advancements,this study demonstrates that the LoRA-enhanced diffusion model significantly improves neural network extrapolation in incomplete data scenarios through statistically consistent synthetic generation.Despite control challenges,this approach reduces costs and enables diverse applications,bridging fundamental rock physics with practical energy research.展开更多
As the mining industry continues to expand and international oil prices increase,more rigorous demands are being placed on the design of mining equipment.Given this,there is an urgent need to develop new power-driven ...As the mining industry continues to expand and international oil prices increase,more rigorous demands are being placed on the design of mining equipment.Given this,there is an urgent need to develop new power-driven mining equipment to solve the problems of high energy consumption and insufficient power coupling of current equipment.This study proposed a design of a hybrid power system for underground Load Haul Dump(LHD).The proposed design integrated Quality Function Deployment(QFD)and Theory of Inventive Problem Solving(TRIZ).It identified 7 user requirements and 10 related technical features,formulated 11 innovative design solutions,and ultimately adopting an electric drive hybrid power scheme.This scheme effectively addressesd power transmission coupling problems and improve the efficiency of loaders.A 6 m³hybrid power loader prototype has been developed,which reduces operational energy consumption and advances the electrification and green,low-carbon evolution of mining equipment.展开更多
OBJECTIVE:To illustrate the effect of add-on therapy of Traditional Chinese Medicine(TCM)on the long-term survival of anemic lower-risk myelodysplastic syndromes(LR-MDS)patients.METHODS:In this study,we conducted a re...OBJECTIVE:To illustrate the effect of add-on therapy of Traditional Chinese Medicine(TCM)on the long-term survival of anemic lower-risk myelodysplastic syndromes(LR-MDS)patients.METHODS:In this study,we conducted a retrospective analysis of the data of patients with LR-MDS who were identified from Shuguang Hospital between January 2006 and June 2020.The Kaplan-Meier method was used to calculate overall survival(OS),while the Cox model was employed to analyze prognostic factors of long-term survival.A total of 162 patients who met the inclusion criteria were divided into two groups:the TCM group(n=78)or the non-TCM group(n=84).RESULTS:There were no significant differences in baseline characteristics.The cumulative survival rate of the TCM group was significantly higher than that of the non-TCM group[log-rank P=0.029,hazard ratio(HR)=0.484,95%confidence interval(CI)(0.249,0.942),P<0.05].Patients with longer TCM treatment appeared to have better OS(≥12 months vs<12 months);[HR,0.16695%CI(0.055,0.508),P<0.001].According to the Cox model analysis,the combination of TCM and conventional Western Medicine may be a protective factor affecting the long-term survival of LR-MDS patients[HR=0.509,95%CI,(0.261,0.993),P=0.048].The hematologic improvement erythroid response(HI-E)rate of the TCM group was significantly higher than that of the non-TCM group(69.23%vs 52.38%;P=0.028).However,the duration of HI-E and cases of disease progression after HI-E did not significantly differ from the non-TCM group(P>0.05).CONCLUSIONS:The integration of TCM and Western Medicine has the potential to extend the OS of LR-MDS patients when compared to the use of Western Medicine alone.展开更多
In addition to the organic matter type,abundance,thermal maturity,and shale reservoir space,the preservation conditions of source rocks play a key factor in affecting the quantity and quality of retained hydrocarbons ...In addition to the organic matter type,abundance,thermal maturity,and shale reservoir space,the preservation conditions of source rocks play a key factor in affecting the quantity and quality of retained hydrocarbons in source rocks of lacustrine shale,yet this aspect has received little attention.This paper,based on the case analysis,explores how preservation conditions influence the enrichment of mobile hydrocarbons in shale oil.Research showns that good preservation conditions play three key roles.(1)Ensure the retention of sufficient light hydrocarbons(C_(1)–C_(13)),medium hydrocarbons(C_(14)–C_(25))and small molecular aromatics(including 1–2 benzene rings)in the formation,which enhances the fluidity and flow of shale oil;(2)Maintain a high energy field(abnormally high pressure),thus facilitating the maximum outflow of shale oil;(3)Ensure that the retained hydrocarbons have the miscible flow condition of multi-component hydrocarbons(light hydrocarbons,medium hydrocarbons,heavy hydrocarbons,and heteroatomic compounds),so that the heavy hydrocarbons(C_(25+))and heavy components(non-hydrocarbons and asphaltenes)have improved fluidity and maximum flow capacity.In conclusion,in addition to the advantages of organic matter type,abundance,thermal maturity,and reservoir space,good preservation conditions of shale layers are essential for the formation of economically viable shale oil reservoirs,which should be incorporated into the evaluation criteria of shale oil-rich areas/segments and considered a necessary factor when selecting favorable exploration targets.展开更多
The 7 ka old Qixiangzhan lava flow(QXZ,Tianchi volcano)represents the last eruptive event before the 946 CE,caldera-forming‘Millennium’eruption(ME).Petrographic,whole rock,mineral composition,Sr-Nd isotopic data on ...The 7 ka old Qixiangzhan lava flow(QXZ,Tianchi volcano)represents the last eruptive event before the 946 CE,caldera-forming‘Millennium’eruption(ME).Petrographic,whole rock,mineral composition,Sr-Nd isotopic data on QXZ show that:(a)the lava consists of two components,constituted by comenditic obsidian fragments immersed in a continuous,aphanitic component;(b)both components have the same geochemical and isotopic variations of the ME magma.The QXZ and ME comendites result from fractional crystallization and crustal assimilation processes.The temperature of the QXZ magma was about 790℃ and the depth of the magma reservoir around 7 km,the same values as estimated for ME.QXZ had a viscosity of 10^(5.5)-10^(9) Pa s and a velocity of 3-10 km/yr.The emplacement time was 0.5-1.6yr and the flow rate 0.48-1.50 m^(3)/s.These values lie within the range estimated for other rhyolitic flows worldwide.The QXZ lava originated through a mixed explosive-effusive activity with the obsidian resulting from the ascent of undercooling,degassing and the fragmentation of magma along the conduit walls,whereas the aphanitic component testifies to the less undercooled and segregated flow at the center of the conduit.The QXZ lava demonstrates the extensive history of the ME magma chamber.展开更多
基金Supported by the National Natural Science Foundation of China Enterprise Innovation and Development Joint Fund Project(U22B6004)National Natural Science Foundation of China and Youth Science Fund Project(4250021468)CNPC Changqing Oilfield Company Key Core Technology Research Project(KJZX2023-01)。
文摘In-situ heating conversion is the most practical recovery method for lacustrine low-to-medium maturity shale oil.However,the energy output-input ratio must exceed the economic threshold to achieve commercial development.This paper systematically investigates the mechanism of super-rich accumulation of organic matter in continental shale,sweet spot evaluation,optimal heating windows,and appropriate well types and patterns from the perspectives of enhancing energy output and reducing energy input.(1)The super-rich accumulation of organic matter in lacustrine shale is primarily controlled by the intensity,frequency,and preservation of external material inputs,and is related to moderate volcanic and hydrothermal activities,marine transgressions,with total organic carbon content greater than or equal to 6%.(2)The quality of organic-rich intervals is related to the type of source material and hydrocarbon generation potential.The in-situ conversion-derived hydrocarbon quality index(HQI)is established,and the zones exhibiting HQI>450 are defined as sweet spots.(3)Considering the characteristics of the organic matter conversion material field and seepage field,the temperature interval 300-370℃is recommended as the optimal heating window for the Chang 7_(3)sub-member of the Triassic Yanchang Formation in the Ordos Basin.Based on the advantages of thermal conductivity,permeability,and hydrocarbon expulsion efficiency along the bedding direction during in-situ heating,the“horizontal well heating+vertical well development”scheme is proposed,which has demonstrated significant enhancement in both recovery factor and energy output-input ratio,making it the optimal in-situ conversion process.The research findings provide a theoretical and technical foundation for the economical and efficient development of low-to-medium maturity shale oil.
文摘HAGI STUDIO株式会社一直以东京谷中地区为营业据点展开活动。截至目前(2018年4月)为止,在谷中地区内负责管理运营着'最小文化复合设施——H A G I S O''街宿——H A N A R E''食物邮电局——TAYORI''街中教室——KLASS'等几家商铺,预计今年6月将接手运营相同地区创业15年的汉堡店'Rainbowkitchen'。这些设施的共同点是有效开发利用了现有的建筑设施。另外从策划到设计,再到管理运营等整个流程全是由我们公司整体负责。
文摘"Inherited the traditional education"is the main mode of talent cultivation of traditional Chinese medicine and effective way,in order to better promote the heritage and development of TCM cause,1et"famous old Chinese medicine studio"play in training talents,academic communication,scientific research,service people should have a role to promote the region's traditional Chinese medicine clinical ability,our college of traditional Chinese medicine(TCM)based on a studio conducted to old with the new educational background education,the author use the PDCA circulation method in management of"famous old Chinese medicine studio"education"shicheng"quality management is improved and exploring,significantly improved the team of teachers and students both sides of teaching and learning satisfaction,At the same time,it has effectively promoted the overall level of TCM medical treatment in our hospital.
基金funding from Innovate UK(reference number:10003208)the China Scholarship Council(Grant No.CSC 202408420030).
文摘Digital rock analysis(DRA)is fundamental for geo-energy research,enabling the characterisation of microstructures for applications like hydrocarbon recovery,carbon storage,and groundwater modelling.Although 2D CT images provide valuable pore-scale data,the scarcity of real-world datasets limits the effectiveness of advanced analysis.Generative AI presents a promising approach for synthesizing high-quality rock images but faces key challenges,including high computational demands,insufficient evaluation metrics,and the trade-off between image fidelity and diversity.To address these limitations,this study proposes the use of Low-Rank Adaptation(LoRA)for fine-tuning stable diffusion models,significantly reducing computational requirements while maintaining image quality.A systematic investigation was conducted to evaluate the influence of LoRA training parameters,including rank and learning rate,on the quality of generated images.Image outputs were assessed using both standard generative metrics,such as Kernel Inception Distance(KID),and domain-specific metrics,including porosity,pore count,and pore area distributions.The optimised LoRA-enhanced diffusion model achieved a 92.6% reduction in KID relative to baseline models,while also improving inference speed.Building on these advancements,this study demonstrates that the LoRA-enhanced diffusion model significantly improves neural network extrapolation in incomplete data scenarios through statistically consistent synthetic generation.Despite control challenges,this approach reduces costs and enables diverse applications,bridging fundamental rock physics with practical energy research.
文摘As the mining industry continues to expand and international oil prices increase,more rigorous demands are being placed on the design of mining equipment.Given this,there is an urgent need to develop new power-driven mining equipment to solve the problems of high energy consumption and insufficient power coupling of current equipment.This study proposed a design of a hybrid power system for underground Load Haul Dump(LHD).The proposed design integrated Quality Function Deployment(QFD)and Theory of Inventive Problem Solving(TRIZ).It identified 7 user requirements and 10 related technical features,formulated 11 innovative design solutions,and ultimately adopting an electric drive hybrid power scheme.This scheme effectively addressesd power transmission coupling problems and improve the efficiency of loaders.A 6 m³hybrid power loader prototype has been developed,which reduces operational energy consumption and advances the electrification and green,low-carbon evolution of mining equipment.
基金China Academy of Chinese Medical Sciences Innovation Fund:Precise Positioning Decision-making Platform for Clinical Trials of Traditional Chinese Medicine Based on Predicition Model(CI2021A04707)The Fundamental Research Funds for the Central Public Welfare Research Institutes:Research on Traditional Chinese Medicine Syndrome Differentiation-based a Bayesian Decision Model of Basket Trial(ZZ13-YQ-076)+1 种基金The Fifth Batch of National TCM Clinical Outstanding Talent Training ProgramThe Fund of National Natural Science Foundation of China(Youth Science):Effect of Compound Shenlu Granule on Apoptosis of CD34+Cells in Lower-risk Myelodysplastic Syndromes Bone Marrow based on p38 Mitogen-activated Protein Kinase Pathway(81403233)。
文摘OBJECTIVE:To illustrate the effect of add-on therapy of Traditional Chinese Medicine(TCM)on the long-term survival of anemic lower-risk myelodysplastic syndromes(LR-MDS)patients.METHODS:In this study,we conducted a retrospective analysis of the data of patients with LR-MDS who were identified from Shuguang Hospital between January 2006 and June 2020.The Kaplan-Meier method was used to calculate overall survival(OS),while the Cox model was employed to analyze prognostic factors of long-term survival.A total of 162 patients who met the inclusion criteria were divided into two groups:the TCM group(n=78)or the non-TCM group(n=84).RESULTS:There were no significant differences in baseline characteristics.The cumulative survival rate of the TCM group was significantly higher than that of the non-TCM group[log-rank P=0.029,hazard ratio(HR)=0.484,95%confidence interval(CI)(0.249,0.942),P<0.05].Patients with longer TCM treatment appeared to have better OS(≥12 months vs<12 months);[HR,0.16695%CI(0.055,0.508),P<0.001].According to the Cox model analysis,the combination of TCM and conventional Western Medicine may be a protective factor affecting the long-term survival of LR-MDS patients[HR=0.509,95%CI,(0.261,0.993),P=0.048].The hematologic improvement erythroid response(HI-E)rate of the TCM group was significantly higher than that of the non-TCM group(69.23%vs 52.38%;P=0.028).However,the duration of HI-E and cases of disease progression after HI-E did not significantly differ from the non-TCM group(P>0.05).CONCLUSIONS:The integration of TCM and Western Medicine has the potential to extend the OS of LR-MDS patients when compared to the use of Western Medicine alone.
基金Supported by the National Natural Science Foundation of China(U22B6004)Project of PetroChina Research Institute of Petroleum Exploration and Development(2022yjcq03)Core Technology Key Project of China Petroleum Changqing Oilfield Company(KJZX2023-01).
文摘In addition to the organic matter type,abundance,thermal maturity,and shale reservoir space,the preservation conditions of source rocks play a key factor in affecting the quantity and quality of retained hydrocarbons in source rocks of lacustrine shale,yet this aspect has received little attention.This paper,based on the case analysis,explores how preservation conditions influence the enrichment of mobile hydrocarbons in shale oil.Research showns that good preservation conditions play three key roles.(1)Ensure the retention of sufficient light hydrocarbons(C_(1)–C_(13)),medium hydrocarbons(C_(14)–C_(25))and small molecular aromatics(including 1–2 benzene rings)in the formation,which enhances the fluidity and flow of shale oil;(2)Maintain a high energy field(abnormally high pressure),thus facilitating the maximum outflow of shale oil;(3)Ensure that the retained hydrocarbons have the miscible flow condition of multi-component hydrocarbons(light hydrocarbons,medium hydrocarbons,heavy hydrocarbons,and heteroatomic compounds),so that the heavy hydrocarbons(C_(25+))and heavy components(non-hydrocarbons and asphaltenes)have improved fluidity and maximum flow capacity.In conclusion,in addition to the advantages of organic matter type,abundance,thermal maturity,and reservoir space,good preservation conditions of shale layers are essential for the formation of economically viable shale oil reservoirs,which should be incorporated into the evaluation criteria of shale oil-rich areas/segments and considered a necessary factor when selecting favorable exploration targets.
基金funded by the National Natural Science Foundation of China(Grant Nos.41972313 and 41790453)the Engineering Research Center of Geothermal Resources Development Technology and Equipment,Ministry of Education,Jilin University。
文摘The 7 ka old Qixiangzhan lava flow(QXZ,Tianchi volcano)represents the last eruptive event before the 946 CE,caldera-forming‘Millennium’eruption(ME).Petrographic,whole rock,mineral composition,Sr-Nd isotopic data on QXZ show that:(a)the lava consists of two components,constituted by comenditic obsidian fragments immersed in a continuous,aphanitic component;(b)both components have the same geochemical and isotopic variations of the ME magma.The QXZ and ME comendites result from fractional crystallization and crustal assimilation processes.The temperature of the QXZ magma was about 790℃ and the depth of the magma reservoir around 7 km,the same values as estimated for ME.QXZ had a viscosity of 10^(5.5)-10^(9) Pa s and a velocity of 3-10 km/yr.The emplacement time was 0.5-1.6yr and the flow rate 0.48-1.50 m^(3)/s.These values lie within the range estimated for other rhyolitic flows worldwide.The QXZ lava originated through a mixed explosive-effusive activity with the obsidian resulting from the ascent of undercooling,degassing and the fragmentation of magma along the conduit walls,whereas the aphanitic component testifies to the less undercooled and segregated flow at the center of the conduit.The QXZ lava demonstrates the extensive history of the ME magma chamber.
