The Mangahewa Formation is the primary reservoir target in the Mangahewa Field in the Taranaki Basin,New Zealand.This formation is distinguished by its marginal marine substantial tight-sand reservoir,having thickness...The Mangahewa Formation is the primary reservoir target in the Mangahewa Field in the Taranaki Basin,New Zealand.This formation is distinguished by its marginal marine substantial tight-sand reservoir,having thickness exceeding 800 m.The aim of this study is to assess the reservoir properties of the Mangahewa Formation through 3D reservoir modeling,employing 3D seismic data,core data,and well data from the Mangahewa Field.Utilizing variance attributes,the faults and horizons have been identified successfully within the field.The majority of the interpreted faults exhibit dip angles exceeding 60°,with a maximum displacement of 118 m.To detect direct hydrocarbon indicators,root-mean-square amplitude seismic attribute,envelope,and generalized spectral decomposition techniques have been employed.Subsequently,four lithofacies,comprising 78.3%sandstone,9.2%siltstone,9.5%claystone,and 3.0%coal have been established by utilizing the Sequential Indicator Simulation(SIS)algorithm to create a lithofacies model.A property model has been generated using the Sequential Gaussian Simulation(SGS)algorithm.Petrophysical evaluation indicates that the Mangahewa Formation exhibits reservoir qualities ranging from fair to good,with porosity levels between 8%and 11%,permeability averaging up to 10 mD,variable shale volumes,and hydrocarbon saturation in the range of 40%-50%.This study's methodologies and findings can serve as a valuable foundation for similar investigations in other tightsand gas fields located in different regions.展开更多
TAR mat is reservoir zone containing petroleum rich in asphaltene, and is situated in gascondensate reservoirs and light oil reservoirs. Tar mat is an organic barrier for oil and gas reservoirs. Recently, determinatio...TAR mat is reservoir zone containing petroleum rich in asphaltene, and is situated in gascondensate reservoirs and light oil reservoirs. Tar mat is an organic barrier for oil and gas reservoirs. Recently, determination of tar mat has become reality as thin layer chromatography-flame ionization detection(TLC-FID) technique is applied to organic geochemical de-展开更多
Shales make up a large proportion of the rocks with extremely low permeability representing many challenges which can be complex in many cases.A careful study of rock and fluid properties(i.e.PVT of shales)of such res...Shales make up a large proportion of the rocks with extremely low permeability representing many challenges which can be complex in many cases.A careful study of rock and fluid properties(i.e.PVT of shales)of such resources is needed for long-term success,determining reservoirs quality,and increased recovery factor in unique unconventional plays.In this communication,a comprehensive thermodynamic modelling is undertaken in which capillary pressure is coupled with the phase equilibrium equations.To this end,the data associated with both shale oil and gascondensates of Eagle Ford shale reservoir located in South Texas,U.S.,is used.Different properties,including bubble and dew point pressures,capillary pressure,interfacial tension,liquid and gas densities,and liquid and gas viscosities,are predicted observing the effects of rock pore sizes by the thermodynamic modelling performed in this study.The results demonstrate that the thermodynamic model developed in this study is capable of simulating the PVT properties of oil and gascondensates in shale and tight reservoirs.For a binary mixture 25:75 C1/C6,the bubble point pressure at different reservoir temperature is increased by increasing the pore sizes from 10 to 50 nm.Furthermore,an increase in pore sizes from 10 to 50 nm can increase the dew point pressure for a studied binary mixture 75:25 C1/C6.展开更多
Developing efficient and stable bimetallic Pdbased anode electrocatalysts toward formic acid oxidation(FAO)is of great significance for commercial applications of direct formic acid fuel cells(DFAFCs).Herein,we report...Developing efficient and stable bimetallic Pdbased anode electrocatalysts toward formic acid oxidation(FAO)is of great significance for commercial applications of direct formic acid fuel cells(DFAFCs).Herein,we report a facile synthesis approach to fabricate PdCu nanoclusters(NCs)catalysts with granular-film structure.The introduction of Cu can adjust the electronic structure and d-band center of Pd,which can improve the catalytic performance of the catalysts.Compared with Pd NCs catalyst,the catalytic durability and activity of PdCu NCs catalysts for FAO are greatly improved.The order for catalytic activity of NC metals is Pd_(85)Cu_(15)NCs>Pd_(70)Cu_(30)NCs>Pd NCs.The maximum mass activity can be acquired with the Pd_(85)Cu_(15)NCs catalyst,which is about1.7 times that of the Pd NCs catalyst.And Pd_(85)Cu_(15)NCs catalyst still maintains the highest catalytic current density after 50 cycles,indicating that Pd_(85)Cu_(15)NCs catalyst has the best durability and electrocatalytic activity for FAO.Our work provides a new prospect for the design of highly efficient anode catalysts materials for DFAFCs.展开更多
文摘The Mangahewa Formation is the primary reservoir target in the Mangahewa Field in the Taranaki Basin,New Zealand.This formation is distinguished by its marginal marine substantial tight-sand reservoir,having thickness exceeding 800 m.The aim of this study is to assess the reservoir properties of the Mangahewa Formation through 3D reservoir modeling,employing 3D seismic data,core data,and well data from the Mangahewa Field.Utilizing variance attributes,the faults and horizons have been identified successfully within the field.The majority of the interpreted faults exhibit dip angles exceeding 60°,with a maximum displacement of 118 m.To detect direct hydrocarbon indicators,root-mean-square amplitude seismic attribute,envelope,and generalized spectral decomposition techniques have been employed.Subsequently,four lithofacies,comprising 78.3%sandstone,9.2%siltstone,9.5%claystone,and 3.0%coal have been established by utilizing the Sequential Indicator Simulation(SIS)algorithm to create a lithofacies model.A property model has been generated using the Sequential Gaussian Simulation(SGS)algorithm.Petrophysical evaluation indicates that the Mangahewa Formation exhibits reservoir qualities ranging from fair to good,with porosity levels between 8%and 11%,permeability averaging up to 10 mD,variable shale volumes,and hydrocarbon saturation in the range of 40%-50%.This study's methodologies and findings can serve as a valuable foundation for similar investigations in other tightsand gas fields located in different regions.
文摘TAR mat is reservoir zone containing petroleum rich in asphaltene, and is situated in gascondensate reservoirs and light oil reservoirs. Tar mat is an organic barrier for oil and gas reservoirs. Recently, determination of tar mat has become reality as thin layer chromatography-flame ionization detection(TLC-FID) technique is applied to organic geochemical de-
文摘Shales make up a large proportion of the rocks with extremely low permeability representing many challenges which can be complex in many cases.A careful study of rock and fluid properties(i.e.PVT of shales)of such resources is needed for long-term success,determining reservoirs quality,and increased recovery factor in unique unconventional plays.In this communication,a comprehensive thermodynamic modelling is undertaken in which capillary pressure is coupled with the phase equilibrium equations.To this end,the data associated with both shale oil and gascondensates of Eagle Ford shale reservoir located in South Texas,U.S.,is used.Different properties,including bubble and dew point pressures,capillary pressure,interfacial tension,liquid and gas densities,and liquid and gas viscosities,are predicted observing the effects of rock pore sizes by the thermodynamic modelling performed in this study.The results demonstrate that the thermodynamic model developed in this study is capable of simulating the PVT properties of oil and gascondensates in shale and tight reservoirs.For a binary mixture 25:75 C1/C6,the bubble point pressure at different reservoir temperature is increased by increasing the pore sizes from 10 to 50 nm.Furthermore,an increase in pore sizes from 10 to 50 nm can increase the dew point pressure for a studied binary mixture 75:25 C1/C6.
基金financially supported by the National Natural Science Foundation of China (No.51901197, 51971184 and 51771157)the Open Fund of Fujian Provincial Key Laboratory of Eco-Industrial Green Technology in Wuyi University (No.WYKF-EIGT2021-6)
文摘Developing efficient and stable bimetallic Pdbased anode electrocatalysts toward formic acid oxidation(FAO)is of great significance for commercial applications of direct formic acid fuel cells(DFAFCs).Herein,we report a facile synthesis approach to fabricate PdCu nanoclusters(NCs)catalysts with granular-film structure.The introduction of Cu can adjust the electronic structure and d-band center of Pd,which can improve the catalytic performance of the catalysts.Compared with Pd NCs catalyst,the catalytic durability and activity of PdCu NCs catalysts for FAO are greatly improved.The order for catalytic activity of NC metals is Pd_(85)Cu_(15)NCs>Pd_(70)Cu_(30)NCs>Pd NCs.The maximum mass activity can be acquired with the Pd_(85)Cu_(15)NCs catalyst,which is about1.7 times that of the Pd NCs catalyst.And Pd_(85)Cu_(15)NCs catalyst still maintains the highest catalytic current density after 50 cycles,indicating that Pd_(85)Cu_(15)NCs catalyst has the best durability and electrocatalytic activity for FAO.Our work provides a new prospect for the design of highly efficient anode catalysts materials for DFAFCs.
