To further improve the utilization of millimeter-scale polymer gel particles (PPGs) in the heterogeneous oil reservoir, it is necessary to investigate its mechanical state of transportation in porous medium and fracture. In this paper, for…
The effects of crude oil on the microstructure and spontaneous combustion characteristics of coal were assessed, using raw coal sample and coal samples containing 5%, 10% and 15% oil. The pore structures, oxygen adsorption capacity, surface…
Vanadium sesquioxide (V2O3) is a promising electrode material for lithium-ion batteries and beyond, yet it encounters structural and cyclic instability issues. Although advances have been made with diverse material combination prototypes, the…
Several studies have been performed to model the storage and transport in organic matter present in shale gas. However, the unconventional formation does not only contain organic matter but also inorganic mineral matrix. The studies necessitated by…
Geologic carbon storage projects aim to permanently trap large volumes of CO2 in reservoir rock sealed with low permeability layers. As high-pressure supercritical or liquid CO2 is injected, hydromechanical and chemical processes caused by the…
The hierarchically porous hollowcarbon spheres (HPHCSs) are synthesized by activating the hollowcarbon spheres (HCSs) derived from the template-directing method using SiO2 spheres and waste tire pyrolysis oil (WTPO) as templates and carbon precursor,…
Rice husk-based SiO2/C composite is a promising anode material for lithium ion battery, but it remains necessary to explore simple methods to improve its lithium storage performance. In this research, SiO2/C was prepared by adjusting ash content of…
Lithium-ion batteries (LIBs), with their advantages of high specific capacity, long cycling life and eco-friendliness, have been widely used in many fields. Dwindling reserves, however, limit their further development. Sharing similar chemical…
Ten sandstone samples were chosen to conduct rock pore structure change law experiment before and after injection and production and the NMR fluid test experiment, the changes of pore size, permeability, and space filling degree were compared and…
Hypothesis: Hydrogen geo-storage is considered as an option for large scale hydrogen storage in a full-scale hydrogen economy. Among different types of subsurface formations, coal seams look to be one of the best suitable options as coal's micro/nano…
Subsurface porous formations provide large capacities for underground hydrogen storage (UHS). Successful utilization of these porous reservoirs for UHS depends on accurate quantification of the hydrogen transport characteristics at continuum (macro)…
Marineterrestrial transitional Permian shales occur throughout South China and have suitable geological and geochemical conditions for shale gas accumulation. However, the Permian shales have not made commercial exploitation, which causes uncertainly…
To promote adaptation of logging evaluation technologies to the development trend of unconventional oil and gas exploration and development era in China, the current situation and challenges of logging evaluation technologies in China are analyzed…
Shale samples of lacustrine Shahejie Formation from the Well F39X1 drilled in Qikou sag were used to study microstructures, mineralogy, and organic geochemistry and their impacts on oil storage response. Samples are quartz and clay rich and contain a…
Porous carbon (PC) derived from the petroleum pitch via the template-guidance coupled with activation methodology, possesses hierarchical pore structure in view of micropore and mesopore. As the electrode material for electrochemical double-layer…
Sulfur-host material with abundant pore structure and high catalysis plays an important role in development of high-energy-density lithiumsulfur (LiS) batteries. Herein, we implanted NiCoP nanoparticles into the N,S co-doped porous carbon derived…
Shales are generally treated as non-porous formations and are frequently considered as the source rock and the cap layer. Over the past decades, technical breakthroughs in the US such as horizontal drilling, multi-stage hydraulic fracturing,…
Carbon dioxide (CO2) sequestration for sustainable enhanced oil recovery and reducing greenhouse gas emissions, still faces various challenges. The process performance can improve via injection of nanoparticles into CO2 (NPs-CO2). However, the…
Rational pore structure and surface properties of carbon materials are significant for their practical application in supercapacitors (SCs). Pursuing a simple and costless synthesis approach is of great importance, yet full of challenges. Herein,…
Injection of supercritical CO2 (SCCO2) causes significant changes in the petrophysical properties of shales and affects the integrity of geological storage sites. The alteration of mineralogy and pore structure plays a major role in defining the…
In the process of global transition to a sustainable low-carbon economy, the two major low-carbon energy technologies, namely, methane (CH4) storage and methane capture face the same challenge, that is, the lack of efficient adsorbents. Metal-organic…
Spontaneous imbibition is the main factor that reduces the fracturing efficiency and damages gas production in shale gas wells, which is regulated by the gaswater interaction. Water (fracturing fluid) is imbibed spontaneously due to the…
Methane carbon isotope fractionation (CIF) during shale gas desorption provides a new method to evaluating in-situ gas content and the ratios of adsorbed and free gas as well as predicting the production status of shale gas wells. Considering…
Pore structure and connectivity are key factors that determine the quality of tight sandstone reservoirs, which are a frontier field for exploration worldwide in the 21st century but are quite challenging to characterize. Here we explored novel…
Petroleum coke and biomass/coal co-gasification is a promising approach for efficiently integrating the individual advantages of different gasification feedstocks with syngas production. Therefore, research on syngas production, reactivity…
Remediation of toxic mercury emissions in the form of elemental mercury (Hg) from the well head has become a dire necessity in the fast paced natural gas processing industries, as even low levels of mercury can damage the cryogenic aluminum heat…
Methane carbon isotope fractionation (CIF) during shale gas desorption provides a new method to evaluating in-situ gas content and the ratios of adsorbed and free gas as well as predicting the production status of shale gas wells. Considering…
Spontaneous imbibition is relevant to many processes in nature and industry. In this work, the effect of pore structure of porous media on counter-current imbibition is studied. The one-dimensional counter-current imbibition experiments were…
Ultra-high pressure water jets (UHP-WJ) rock breaking is a promising technology for developing unconventional natural gas reserves. In this study, rock-breaking experiments were conducted using typical reservoir rock samples such as sandstone, shale,…
Shales are generally treated as non-porous formations and are frequently considered as the source rock and the cap layer. Over the past decades, technical breakthroughs in the US such as horizontal drilling, multi-stage hydraulic fracturing,…
Lacustrine organic-rich shale with extremely heterogeneous pore structure is widespread in the second member of the Permian Lucaogou Formation (P2l2) of the Santanghu Basin. However, information on the pore structure, fluid mobility, and oiliness…
Volcanisms were widespread during the Permian periods in the Santanghu Basin. However, information on the classification of the lithofacies of the Lucaogou Formation (Lucaogou Fm) is still lacking, and the hydrocarbon potential of the organic-rich…
Geomaterials and filling fluids properties that are pertinent to a geologic porous media can be characterized using a range of methods, such as nuclear magnetic resonance, X-rays, infrared spectroscopy, and neutron scattering (NS). In this context,…
Pore structure and connectivity are key factors that determine the quality of tight sandstone reservoirs, which are a frontier field for exploration worldwide in the 21st century but are quite challenging to characterize. Here we explored novel…
Rational pore structure and surface properties of carbon materials are significant for their practical application in supercapacitors (SCs). Pursuing a simple and costless synthesis approach is of great importance, yet full of challenges. Herein,…
In the process of global transition to a sustainable low-carbon economy, the two major low-carbon energy technologies, namely, methane (CH4) storage and methane capture face the same challenge, that is, the lack of efficient adsorbents. Metal-organic…