Xuning Wu
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View article: Numerical Modeling of Wellbore and Formation Temperature Recovery Prior to Cementing Operations
Numerical Modeling of Wellbore and Formation Temperature Recovery Prior to Cementing Operations Open
Bottom Hole Circulating Temperature (BHCT) of cement slurry is the most critical operational parameter in cementing engineering, directly impacting operational safety and cementing quality. Prior to cementing, the temperature in the bottom…
View article: A Comprehensive Evaluation Method for Cement Slurry Systems to Enhance Zonal Isolation: A Case Study in Shale Oil Well Cementing
A Comprehensive Evaluation Method for Cement Slurry Systems to Enhance Zonal Isolation: A Case Study in Shale Oil Well Cementing Open
Due to post-cementing hydraulic fracturing and other operational stresses, inadequate mechanical properties or suboptimal design of the cement sheath can lead to tensile failure and microcrack development, compromising both hydrocarbon rec…
View article: Strategies toward carbon neutrality: comparative analysis of China, USA, and Germany
Strategies toward carbon neutrality: comparative analysis of China, USA, and Germany Open
The growing threat of global warming makes it urgent to reduce carbon emissions and combat climate change. Achieving carbon neutrality is a key strategy to address these challenges and move towards a sustainable, low-carbon future. Compari…
View article: Numerical calculation of bottom hole circulating temperature in wellbore cementing processes with multi-fluid and multi-step
Numerical calculation of bottom hole circulating temperature in wellbore cementing processes with multi-fluid and multi-step Open
View article: FmCFA: a feature matching method for critical feature attention in multimodal images
FmCFA: a feature matching method for critical feature attention in multimodal images Open
View article: Impacts of microbial interactions on underground hydrogen storage in porous media: A comprehensive review of experimental, numerical, and field studies
Impacts of microbial interactions on underground hydrogen storage in porous media: A comprehensive review of experimental, numerical, and field studies Open
View article: Analytical Perspectives on Cement Sheath Integrity: A Comprehensive Review of Theoretical Research
Analytical Perspectives on Cement Sheath Integrity: A Comprehensive Review of Theoretical Research Open
The cement sheath, serving as the primary element of well barriers, plays a crucial role in maintaining zonal isolation, protecting the casing from corrosion, and providing mechanical support. As the petroleum industry shifts from conventi…
View article: Improving the Mechanical Properties of Cement-Based Materials Under High Temperature: Reducing the C3S/C2S Ratio
Improving the Mechanical Properties of Cement-Based Materials Under High Temperature: Reducing the C3S/C2S Ratio Open
View article: Enhancing Environmental Protection in Oil and Gas Wells through Improved Prediction Method of Cement Slurry Temperature
Enhancing Environmental Protection in Oil and Gas Wells through Improved Prediction Method of Cement Slurry Temperature Open
Accurate cement slurry temperature prediction is a prerequisite for improving cementing quality and ensuring wellbore integrity and sealing of oil and gas wells. It plays a crucial role in preventing “gas migration” and “sustained casing p…
View article: A Two-Step Site Selection Concept for Underground Pumped Hydroelectric Energy Storage and Potential Estimation of Coal Mines in Henan Province
A Two-Step Site Selection Concept for Underground Pumped Hydroelectric Energy Storage and Potential Estimation of Coal Mines in Henan Province Open
In the context of carbon neutrality, the phase-out of coal from the energy structure has resulted in numerous old coal mines that possess abundant underground space resources suitable for underground pumped hydroelectric energy storage (UP…
View article: Fracture initiation and propagation of supercritical carbon dioxide fracturing in calcite-rich shale: A coupled thermal-hydraulic-mechanical-chemical simulation
Fracture initiation and propagation of supercritical carbon dioxide fracturing in calcite-rich shale: A coupled thermal-hydraulic-mechanical-chemical simulation Open
The initiation and propagation mechanisms of supercritical carbon dioxide (scCO2) fracturing are more complex than those of hydraulic fracturing in calcite-rich shale due to the temperature‒pressure sensitivity of scCO2 and scCO2-brine-roc…
View article: Numerical Simulation on the Safety and Quality of Cementing by Using Pad Fluid in Horizontal Wells
Numerical Simulation on the Safety and Quality of Cementing by Using Pad Fluid in Horizontal Wells Open
The failure of wellbore sealing will cause leakage of greenhouse gases, such as carbon dioxide and methane, which will harm oil and gas recovery and environmental safety. Cementing is an important part of wellbore sealing. Only good cement…
View article: Gleaning insights from German energy transition and large-scale underground energy storage for China’s carbon neutrality
Gleaning insights from German energy transition and large-scale underground energy storage for China’s carbon neutrality Open
The global energy transition is a widespread phenomenon that requires international exchange of experiences and mutual learning. Germany’s success in its first phase of energy transition can be attributed to its adoption of smart energy te…
View article: Failure Analysis of Cement Sheath Mechanical Integrity Based on the Statistical Damage Variable
Failure Analysis of Cement Sheath Mechanical Integrity Based on the Statistical Damage Variable Open
Maintaining the cement sheath mechanical integrity is the key to ensuring the benefit and safety of oil and gas well drilling and production. The main function of the cement sheath is to isolate oil and gas from water layers, which prevent…
View article: Numerical simulations of supercritical carbon dioxide fracturing: A review
Numerical simulations of supercritical carbon dioxide fracturing: A review Open
As an emerging waterless fracturing technology, supercritical carbon dioxide (SC-CO2) fracturing can reduce reservoir damage and dependence on water resources, and can also promote the reservoir stimulation and geological storage of carbon…
View article: Theoretical study on the hydraulic sealing integrity of cement sheath in horizontal shale oil wells under fracturing: Crack propagation mode and mechanism
Theoretical study on the hydraulic sealing integrity of cement sheath in horizontal shale oil wells under fracturing: Crack propagation mode and mechanism Open
The cement sheath-formation interface is a weak link in wellbore isolation systems, which is prone to the failure of sealing integrity during fracturing, affecting the fracturing effect, and wellbore safety. In this study, we establish a n…
View article: Theoretical Analysis of the Micro Annulus of an Oil-Well Cement Sheath Formed via Cooling under Acid-Fracturing Conditions
Theoretical Analysis of the Micro Annulus of an Oil-Well Cement Sheath Formed via Cooling under Acid-Fracturing Conditions Open
The plastic deformation and interface micro annulus of oil-well cement during acid fracturing are key reasons for the failure of the wellbore seal and sustained casing pressure. However, most of the existing research ignores the influence …
View article: Experiment and failure mechanism of cement sheath integrity under development and production conditions based on a mechanical equivalent theory
Experiment and failure mechanism of cement sheath integrity under development and production conditions based on a mechanical equivalent theory Open
During their life cycle, high‐pressure gas wells experience circulating working fluid, acid fracturing, blow off, and other development and production conditions. This may lead to the failure of the cement sheath integrity and result in su…
View article: Real-Time Intelligent Recognition Method for Horizontal Well Marker Bed
Real-Time Intelligent Recognition Method for Horizontal Well Marker Bed Open
The accurate identification of the horizontal well marker bed is to guarantee the soft landing of the well trajectory. With the intelligent development of the petroleum industry, it is feasible to apply computers to identify the marker bed…
View article: Utilization of CO2 as Cushion Gas for Depleted Gas Reservoir Transformed Gas Storage Reservoir
Utilization of CO2 as Cushion Gas for Depleted Gas Reservoir Transformed Gas Storage Reservoir Open
Underground gas storage reservoirs (UGSRs) are used to keep the natural gas supply smooth. Native natural gas is commonly used as cushion gas to maintain the reservoir pressure and cannot be extracted in the depleted gas reservoir transfor…