Southwest Petroleum University

Unraveling the Scale Effect on Fracture Plugging: A Quantitative Study from Lab-Scale Slots to Field-Scale Fractures via Hydrodynamic Analysis

Abstract Conventional core-scale laboratory fracture-plugging tests may overestimate the ability of granular lost circulation materials (LCMs) to form a complete plugging zone under field-scale conditions. This discrepancy arises because the effects of increasing fracture length...

Ejector design and structural parameter optimization design of vehicle-mounted hydrogen supply circulation system

As the core component of the vehicle hydrogen supply cycle system, the performance of the hydrogen recovery efficiency of the ejector directly affects the hydrogen cycle utilization rate and the operation stability of the whole system. The ejector coefficient is a key indicator t...

Multi-scale Investigation into the mechanical properties and shear-slip failure processes of oil shale with varying bedding orientations

The efficient extraction of deep shale oil fundamentally relies on a precise understanding of the anisotropic shear-slip failure governed by natural bedding planes. However, conventional numerical simulations frequently overestimate the macroscopic failure strength because they n...

Nanocellulose-g-poly(2-dimethylamino)ethyl methacrylate foam stabilizer with temperature and pH responsiveness

Stimulus-responsive foam stabilizers are highly desirable for enhanced oil recovery (EOR) applications, yet the development of renewable, dual-responsive systems with controllable performance remains challenging. Herein, we report a series of cellulose nanocrystal-g-poly(2-(dimet...

Defect Passivation of Mesoporous Al2O3-Based Buried Interface for Efficient Inverted Perovskite Solar Cells

Abstract Buried interface engineering between the hole transport layer and perovskite remains a critical challenge for inverted perovskite solar cells (IPSCs). Al2O3-based interface modification provides excellent interfacial stability and ion-blocking capability; however, its in...

Drill String Dynamics in Deepwater Open-Loop Drilling of an Ultra-Shallow High-Build-Rate Horizontal Well

In deepwater open-loop drilling of ultra-shallow high-build-rate horizontal wells, the drill string spans the exposed seawater section, the mudline transition, and the constrained downhole section. Existing studies have not yet established a unified coupled dynamic model covering...

The Influence Path of Project Manager Competency on the Performance of Area Development Projects

The competence of a project manager is pivotal in influencing the success of construction projects and significantly affecting project performance. To explore the influence mechanism of project manager competency on the performance of area development projects, this study adopted...

Study of a Novel Thermoviscosifying Polymers Fracturing Fluid Based on Supramolecular Self‐Assembly

ABSTRACT Nowadays, the exploration of unconventional reservoirs commonly faces the challenges brought by harsh natural reservoir conditions such as high temperature and high salinity. This research proposes and tests a novel thermoviscosifying polymer‐based fracturing fluid (HTEP...

The Significance of Diagenetic System Evolution to the Formation and Preservation of Hydrothermal Dolomite Reservoirs: A Case Study of the Permian Qixia Formation, Southwestern Sichuan, China

Abstract Understanding the evolution of diagenetic systems is crucial for elucidating the formation mechanisms of high-quality carbonate reservoirs. This study focuses on hydrothermal dolomite reservoirs developed in the platform margin zone of the Qixia Formation in the southwes...

Liquid CO2 Replacement and SequestrationBehavior after Depressurization Production of Methane Hydrates

Abstract Aligned with China’s “dual carbon” strategic objectives, natural gas hydrates─recognized as a crucial source of clean unconventional natural gas─constitute a significant technological avenue for securing national energy stability and meeting carbon reduction targets thro...

Discrimination of Tight Sandstone Reservoir Effectiveness Based on Pore-Throat Functional Fractal Characterization and Three-Dimensional Pore-Network Connectivity Constraints

Tight sandstone reservoir effectiveness is governed not by pore volume alone, but by the storage and flow contributions of different pore-throat scales, their structural complexity, and their three-dimensional connectivity. This study investigates tight sandstones of the Benxi Fo...

Nonlinear Entropy–Enthalpy Correlation forMethane Adsorption on Shale

Abstract The enthalpy–entropy compensation effect is widely recognized in shale gas adsorption studies, where the standard adsorption entropy change is typically reported to vary linearly with the standard adsorption enthalpy change. However, this study reveals that such linear a...

Phase Behavior and Critical Properties of Hydrocarbons in Shale Illite Nanopores

Clay minerals are significant constituents of shale reservoirs, yet the confinement-induced phase behavior of hydrocarbons within clay nanopores has received comparatively less attention than in carbonaceous materials. In this study, Grand Canonical Monte Carlo (GCMC) simulations...

SynergisticAdsorption and Photocatalysis over Ag2CO3/Coca-Cola-Modifiedg-C3N4 for Antibiotic Wastewater Treatment

Abstract Considering the limitations of traditional adsorption and standalone photocatalytic technologies, as well as the environmental hazards posed by antibiotics, a novel Ag2CO3/CCN S-scheme heterojunction was fabricated by coupling Ag2CO3 with Coca-Cola-modified g-C3N4 (desig...

Predictive Effect of Neighborhood Disadvantage on Depressive Symptoms Among Chinese Middle-Aged and Older Adults: Social Support and Children’s Marital Status as Intervening Factors

Abstract Depressive symptoms among Chinese middle-aged and older adults have risen substantially in recent years, yet how neighborhood and family factors relate to mental health remains insufficiently understood in China. Using survey data from 1,177 respondents in Chengdu, this...