Southwest Petroleum University

A Copula-based composite drought index for vegetation and hydrological droughts

Drought is a complex natural hazard with profound impacts on vegetation and water resources. However, existing monitoring approaches often treat vegetation and hydrological droughts separately, limiting a comprehensive understanding of their interactions. To address this gap, thi...

CO2 Extraction of Shale Oil from Nanoscale Variable-Diameter Blind Pores from a Molecular Dynamic Perspective

Shale oil, despite its substantial reserves and significant development potential, presents a great extraction challenge. The existence of micro- and nanopores within shale formations renders conventional recovery methods largely ineffective, resulting in a limited recovery facto...

A Digital Delivery Framework for Precision Carbon Management in Gas Gathering Systems: From Tiered Accounting to Reduction Optimization

With the tightening of global methane regulations (EU Methane Regulation 2024/1787, U.S. EPA GHG rules, OGMP 2.0) and China’s dual-carbon commitments, precise and traceable carbon accounting for natural gas gathering systems has become an urgent engineering imperative. To tackle...

Benzoxazine-crosslinked waterborne polyurethane coatings for corrosion protection and emulsion separation

To overcome the limitations of waterborne polyurethane (WPU) in practical applications, including insufficient mechanical strength, poor water resistance, and weak adhesion, a series of multifunctional benzoxazine-modified WPU coatings were developed. A siloxane-containing dihydr...

Flood damage estimation and disaster perception using multi-source data: a case study of Henan, China

Urban flood is becoming increasingly frequent worldwide, posing a serious threat to life and property. Accurately assessing flood damage is critical for risk management and flood prevention. However, traditional estimation methods are resource-intensive and untimely. Previous stu...

Numerical Simulation on Descaling Performance of Ultrasonic-Assisted Water Jet Under High Confining Pressure

Severe scale buildup threatens the safe operation of downhole tubing and subsea pipelines under high confining pressure. Conventional descaling methods are less effective in enclosed high-pressure environments, where elevated ambient pressure suppresses ultrasonic cavitation and...

Head Group-Induced Interfacial Water Rearrangement during Demulsification: A Study at the Molecular Level

Abstract Tight oil emulsions produced in tertiary oil recovery display ultrahigh stability, whereas conventional block polyether demulsifiers show inadequate demulsification performance under harsh high-temperature and high-salinity conditions. However, the relationship between t...

Why intra- and inter-regional diversification matter: emerging-country multinational firms' geographic diversification and green technology innovations

Purpose Geographic diversification is a critical strategy for emerging market firms (EMFs) with limited domestic knowledge to support the development of knowledge-intensive green technology innovation (GTI). This study focuses on the multi-regional operations of EMFs and investig...

Living with noise: attributional logic of noise-coping strategies in old residential communities

Purpose Noise in aging residential communities is a challenge of architectural management; yet, research overlooks residents’ cognitive mechanisms. This study examines how attributing noise to building deficiencies or neighbor misconduct shapes coping strategies, linking subjecti...

Constraints of Tectono-Hydrothermal Alteration on Permian Volcanic Reservoir Formation as Recorded by Fluid Inclusions

The origin of effective porosity in the Permian volcanic reservoirs of the Sichuan Basin remains poorly understood, particularly regarding the contribution of deep-sourced hydrothermal fluids. This study presents an integrated analysis of the Emeishan basalts, combining petrograp...

Optimization of Intermittent Defoamer Injection in Foam-Assisted Gas-Well Deliquification: Experimental and Theoretical Investigation

Low-pressure gas wells treated by foam-assisted deliquification often suffer from poor temporal coordination between foamer and defoamer injection, excessive defoamer consumption under continuous dosing, and foam carryover into surface facilities. This study proposes a coordinate...

Research on the Geochemical Characteristics of Quaternary Biogenic Gas Source Rocks in the Linhe Depression of the Hetao Basin: A Case Study of Well LQY1

ABSTRACT To characterize the characteristics of Quaternary biogenic gas source rocks in the Linhe Depression of the Hetao Basin, total organic carbon (TOC), Rock‐Eval pyrolysis, and gas chromatography–mass spectrometry (GC–MS) analyses were carried out on 15 samples from Well LQY...

Bio‐Inspired Bidirectional Proton Regulatory Mechanisms by Anhydride‐Based Hydrogel Electrolytes for High‐Performance Aqueous Zinc‐Ion Batteries

ABSTRACT Aqueous zinc‐ion batteries (AZIBs) employing hydrogel electrolytes offer significant advantages in mitigating short‐circuit and electrolyte leakage risks. Nevertheless, the sluggish transport kinetics of Zn 2 + and severe interfacial instability of zinc anodes still seve...

Mechanistic Analysis of Stage-Dependent In Situ Hydrogen Production from Heavy Oil Under Nitrogen Atmosphere

In situ gasification-assisted hydrogen production from heavy oil has the potential to simultaneously achieve in-reservoir upgrading and hydrogen generation, offering a promising pathway for the clean and efficient development of heavy oil resources. To investigate stage-dependent...

Geochemical Evidence for the Evolution of the Deyang–Anyue Rift in the Ediacaran–Cambrian Period on the Northwestern Margin of the Yangtze Block

Abstract The evolution of a large intracratonic rift trough in the northern Sichuan Basin, China, along the northwestern margin of the Yangtze Block, is documented during the significant Ediacaran–Cambrian Transition (ECT). Three prevailing perspectives exist regarding the specif...

A Photocurable Conductive Hydrogel with Synergistic Electron and Ion Transport for Long-Term, High-Fidelity Electroencephalography Acquisition

Abstract Long-term, high-fidelity electroencephalography acquisition requires bioelectronic interfaces that simultaneously exhibit low skin–electrode impedance, stable electrical conductivity, mechanical compliance, and environmental stability. However, most conductive hydrogels...

Ni/Mg‐Doped Ceria Interface Enhances Concentrated Solar‐Driven CO 2 Reduction With CH 4

ABSTRACT Concentrated‐solar catalytic conversion of carbon dioxide (CO 2 ) offers a promising route to utilize greenhouse gases via renewable energy. Dry reforming of methane (DRM) is particularly attractive, converting both CO 2 and methane (CH 4 ) into valuable syngas (CO and H...

From bubble–particle aggregate formation to froth stability in mineral flotation: mechanistic links and controlling factors

Froth is an indispensable component of the flotation process, and its stability determines both the recovery and the separation efficiency. Accordingly, from the perspectives of the pulp phase and froth phase in the flotation system, this review elucidates the bubble-particle int...

Experimental Study on Gas–Water Two-Phase Seepage Characteristics in a Low-Permeability Gas Reservoir

The relationship between two-phase flow behavior and pore microstructure in low-permeability gas reservoirs remains poorly understood, particularly during gas accumulation (gas displacing water) and subsequent development (water displacing gas). To address this, five plug cores w...

The key factors controlling the microstructural damage and its quantitative characterization in mudstone caprocks

Abstract Previous studies on mudstone caprock damage in underground gas storage (UGS) have largely focused on the macroscopic sealing failure, while the microstructural damage mechanism and the key controlling factors remain unclear. In particular, the microstructural damage has...