Southwest Petroleum University

A Flow-Field-Driven Zonal Framework for Mechanism-Based Corrosion-Hotspot Identification in Gas-Field Three-Phase Separators

Internal corrosion in gas-field separators is highly localized because flow, phase distribution, deposits, and water chemistry vary strongly over the vessel wall. This study presents a flow-field-driven zonal framework for corrosion-hotspot screening in horizontal three-phase sep...

Geochemical responses of mineral powder materials and natural rock cores to H2-water exposure in underground hydrogen storage

Geochemical interactions among H 2 , water, and subsurface minerals may affect the integrity of underground hydrogen storage (UHS). Five mineral-enriched powders and one cement material were exposed to H 2 gas, He-water, and H 2 -water for 30 days at 120 °C and 10 MPa. Sandstone,...

SparseRoute: Structured Sparse Variable Routing for High-Dimensional Multivariate Time Series Forecasting

Forecasting high-dimensional multivariate time series requires models to represent dependencies across variables without making variable interactions prohibitively expensive. Full attention over variable-level tokens has a pairwise cost quadratic in the number of variables; chann...

Characteristics and Genesis Mechanisms of Deep Ordovician Dolomites in the Fuman Area, Tarim Basin

The deep Ordovician Yingshan Formation dolomites in the Fuman area of the Tarim Basin possess enormous potential for hydrocarbon exploration and development, yet their development characteristics and formation mechanisms remain uncertain. Focusing on the deep Ordovician Yingshan...

Superhydrophobic HNTs-TiN-SA Composite Coating with Excellent Corrosion Resistance and Anti-Icing/Deicing Capabilities

Abstract Superhydrophobic coatings have broad application prospects due to their advantages such as self-cleaning, antifouling, anti-icing, and deicing. However, traditional superhydrophobic coatings contain fluorine-containing components, which pose environmental and health risk...

Spatial Redistribution of Gas Hydrates and Its Impact on Pressure-Limited Restart in Deepwater Subsea Flowlines

Hydrates formed during a subsea flowline shutdown can persist as deposits that restrict the subsequent restart. Assessing restartability therefore requires both thermodynamic conditions and the pressure needed to recover flow. This study develops a one-dimensional screening model...

A novel hybrid prediction approach for critical buckling strain of dented subsea pipelines coupling symbol regression and physics-informed neural networks

This study proposes a novel hybrid approach to predict the critical buckling strain (CBS) of dented subsea pipelines by coupling symbolic regression (SR) with physics-informed neural networks (PINNs). A 3D finite element model was developed to simulate pressurization, indentation...

New insights of geochemical interactions between h2 and minerals in underground hydrogen storage: Experimental studies and geochemical simulation

Underground hydrogen storage (UHS) has emerged as one of the most promising technologies for addressing the critical demand for large-scale clean energy storage. However, current understanding of the geochemical behavior of H 2 interacting with minerals within underground reservo...

Vibration characteristics analysis and vibration suppression of shaft system based on multivariate nonlinear factors

Shale-gas reciprocating-compressor shaft systems are subject to coupled bending-torsional vibration produced by alternating loads and interacting nonlinearities, which challenges reliable vibration prediction and safety-oriented design. This study proposes a unified multi-nonline...

Synthesis of Sulfonic Acid-Functionalized Al 2 O 3 /Poly(BMA-co-SMA-co-DAP) Resin and Its Rapid Selective Adsorption of Chlorinated Hydrocarbons in the Oil Phase

Chemical additives introduced during the crude oil extraction stage can easily lead to elevated levels of organochlorine compounds, causing problems such as equipment corrosion and catalyst poisoning. Here, we explore a novel sulfonic acid-functionalized Al2O3/P(BMA-co-SMA-co-DAP...

Gradient Identification and Institutional Responses to the Risk of Sexual Abuse of Left-Behind Minors: An Empirical Analysis Based on 187 Judicial Cases in Eastern Sichuan

Based on 187 judicial cases involving sexual abuse of left-behind minors in eastern Sichuan (2021–2025), this study employs binary logistic regression, interrupted time series (ITS) analysis, and event history analysis to examine the effects of absent guardianship, acquaintance n...

Tracing Shale-Gas Migration in Complex Tectonic Settings: Evidence from Carbon-Isotope Fractionation Patterns

Abstract Late-stage tectonic deformation strongly influences shale-gas preservation and redistribution, but conventional methods rarely resolve gas-migration pathways and directions. Here, we test whether the direction of spatial carbon-isotope gradients can indicate the dominant...

A Study on Pyrolysis Characteristics and Product Release Mechanisms of Oil Shale

Abstract To investigate the effects of reaction atmosphere on the oxidative thermal conversion and product-evolution characteristics of oil shale, Maoming oil shale and its extracted kerogen were examined by thermogravimetric analysis (TG) and simultaneous thermal analysis couple...

Integrated adsorption–membrane process for lithium recovery from shale gas flowback fluid

Shale gas fracturing flowback fluid represents a promising unconventional lithium resource with concentrations reaching industrial grades, while simultaneously presenting significant wastewater treatment challenges. This study systematically investigates the complete research cha...

SWaveNet: elastic-wave sequence-to-image learning for buried polyethylene pipeline localisation

Accurate localisation of buried polyethylene (PE) pipelines remains challenging because surface-acquired elastic-wave signals are weak, noisy, and sensitive to soil conditions. This study proposes SWaveNet, a Subsurface Waveform-to-Image Network, for elastic-wave sequence-to-imag...

A Compositional and Genetic Framework for Shale Lithofacies Classification and Reservoir Quality Prediction: Insights From the Wufeng‐Longmaxi Formation, South Sichuan

ABSTRACT Although shales are of fundamental importance in geological research and energy exploration, no consensus has been reached on a unified classification and nomenclature that adequately reflect their multiscale heterogeneity and genetic origins. To address this gap, we pro...

Mechanisms of Overpressure Formation and Distribution Prediction in Ultra‐Deep Carbonate Reservoirs in the YB Area, Sichuan Basin

ABSTRACT Understanding the formation mechanisms and predicting the distribution of abnormally high pressure in marine carbonate reservoirs are fundamental to ultra‐deep hydrocarbon exploration. This study investigates the ultra‐deep carbonate grain‐beach reservoirs of the second...

Mesoporous Silica Microspheres in a Delayed Gel-Breaking System for High-Temperature Fracturing Fluid

Abstract In high-temperature fracturing operations, the rapid decomposition of strong oxidant breakers causes premature viscosity loss of fracturing fluids, severely impairing proppant placement. Currently, most delayed gel-breaking systems rely on polymeric shell materials to ph...

Impact of Fatigue on Mind-Wandering in Drilling Crews for Engineering Safety: A Lab-in-the-Field Experiment

Abstract Fatigue among drilling crews significantly impairs their attentional capacity and physiological functioning, potentially triggering a mind-wandering (MW) state that may ultimately lead to serious accidents. However, the underlying brain network mechanisms through which f...

From pore-scale mechanisms to hydraulic-work analysis: a microfluidic study of CO2-EOR via WAG, FWAG, and PWAG

To mitigate severe gas channeling and poor volumetric sweep during CO 2 flooding in low-permeability conglomerate reservoirs, WAG and its enhanced variants, FWAG and PWAG, are widely used for mobility control. However, pore-scale evidence remains limited on how flow resistance, f...