Study on the pyrolysis of kerogen at varying moisture contents: Experimental modeling and ReaxFF simulation
August 2026
Hydrocarbon generation from shale usually occurs in a reducing aqueous environment. Understanding the pyrolysis characteristics of shale kerogen under hydrous conditions is crucial for elucidating the...
Flocculation–microfiltration integration for high-salinity oilfield offshore produced water treatment
August 2026
This study evaluated an integrated treatment system that combines chemical destabilization (through flocculation) with membrane-based separation (via submerged microfiltration) for removing of dispersed...
Low-temperature oxidation of light crude oil: Molecular composition and deposition characteristics of oxidation products
August 2026
Air flooding is an important enhanced oil recovery technology for light crude oil development. Low temperature oxidation (LTO) occurs when air is injected into light crude oil, a large number of active...
Semi-supervised-learning-based AVO-preserved pre-stack seismic data resolution enhancement
August 2026
High-resolution pre-stack seismic data are essential for exploring complex and thin-layered reservoirs, and can enhance the reliability of resource evaluation. However, traditional pre-stack seismic...
Geological fault identification via multi-knowledge causally embedding graph representation applied in underground gas storage
August 2026
Geological fault identification is critical for gas storage safety, yet remains reliant on manual interpretation with inherent inefficiencies. While Artificial intelligent (AI) methods offer alternatives,...
Study on gas–liquid counter-current flow behavior and calculation of key killing parameters using bullheading well control method in directional wells
August 2026
The formation pressure system of deep and ultra-deep carbonate reservoirs is complex, with widespread fracture development and a narrow safety pressure window. The use of conventional cyclic well control...
Numerical simulation of integrated “fracturing-soaking-production” in tight reservoirs
August 2026
Integrated fracturing-flooding is a key technology to solve the problem of “difficult injection and difficult extraction” in tight oil and gas reservoirs. Focusing on three key physical processes in...
Ensemble-based interpretation of partitioning inter-well tracer tests for residual saturation and permeability estimation
August 2026
Partitioning inter-well tracer test (PITT) is a direct method for quantifying remaining oil saturation (Sor), but conventional interpretation workflows can lead to significant overestimation if neglecting...
Diagnostic potential of light hydrocarbons in deep marine natural gas: Insights from Tarim Basin
August 2026
Light hydrocarbons (LHs) retain comprehensive information about the genesis of natural gas. In this study, the gas composition, carbon isotopes, and LHs in deep marine natural gases from the Tarim Basin...
Experimental study on vertical propagation of hydraulic fracturing in multilayer permeability heterogeneous reservoirs: Based on true triaxial experiment and acoustic emission monitoring
August 2026
To investigate the influence mechanisms of formation permeability on hydraulic fracture vertical propagation behavior in the southern Songliao Basin of China, this study constructed a physical experimental...
Efficient hydrocarbon generation mechanism in low-TOC source rocks of saline lacustrine basins: A case study of the Oligocene Linhe Formation in the Linhe Depression, Hetao Basin
August 2026
The Oligocene Linhe Formation (E3l) in the Linhe Depression, Hetao Basin, illustrates the “Hydrocarbon Generation Paradox” (the apparent contradiction between low TOC and high hydrocarbon yields). Where...
Co-pyrolysis of oil shale and bituminous coal in a fluidized bed: Properties and distribution of pyrolysates, and reaction mechanisms
August 2026
The co-pyrolysis of mixed samples of Longkou oil shale (OS) and bituminous coal (BC), using the ash of the mixture as the heat carrier, was investigated in a fluidized bed. The influencing factors were...
3-D contour inversion of pipeline defects based on direction-aware multi-axis fusion and depth-gradient joint decoding
August 2026
Reconstructing defect contours by inspecting internal magnetic flux leakage (MFL) in oil and gas pipelines provides significant data support for assessing pipeline integrity and represents a crucial...
In-situ stress controlled reservoir quality in ultra-deep sandstones in Qiulitage Structural Belt, Kuqa Depression, Tarim Basin, NW China
August 2026
High industrial natural flow has been produced from the ultra-deep Cretaceous Bashijiqike sandstones (>6000 m) in the Qiulitage Structural Belt in the Kuqa Depression, Tarim Basin, northwestern China....
Imaging enhancement for towed-streamer data using OBN data based on deep learning
August 2026
Deep oil and gas exploration has become a critical frontier in offshore oil and gas development due to growing global energy demand. However, traditional towed-streamer seismic acquisition often struggles...
Energy-efficient fracturing based on stress-coupled perforation
August 2026
Hydraulic fracturing (HF) in horizontal wells frequently encounters challenges such as uneven fracture propagation and elevated energy consumption, largely due to stress shadow effects and perforation...
Axial-torsional-lateral vibration model of drill bit considering axial and lateral cutting effects
August 2026
In ultra-deep well drilling, the drill bit undergoes severe axial-torsional-lateral coupled vibrations, such as stick-slip and whirling, significantly increasing drilling risks. The evolution laws of...
Diffusion-IDEA: A conditional diffusion framework for well log imputation
August 2026
Well log data constitute a primary source of critical information for quantitative reservoir evaluation; however, acquisition failures, wellbore irregularities, and constraints imposed by the log program...
A new model to predict the electrical submersible Pump's characteristic curves under highly viscous flow
August 2026
Electrical submersible pumps (ESP) are a key artificial lift method, particularly in challenging oilfield operations involving highly viscous fluids such as heavy oil, emulsions, or subsea boosting...
A critical review on deep-water oil and gas development equipment research and application: Floating platform, mooring cable and pile foundation
August 2026
As a crucial component of the global energy supply, deep-sea oil and gas resources exist in highly complex environments and pose significant technical challenges, necessitating reliance on floating...
Ultrasonic velocity-based model for water holdup prediction in polymer-oil-water flows
August 2026
Polymer flooding significantly enhances crude oil recovery, but its complex rheological properties pose challenges to traditional water holdup measurement. We conduct experimental studies in a 20-mm...
Large-scale 3D experimental study on in-situ pyrolysis of tar-rich coal (I): Heat transfer behavior and product characteristics under conductive heating
August 2026
Conductive heating is a key method for in-situ pyrolysis of tar-rich coal. However, the temperature and pressure characteristics, oil and gas production mechanisms, and reaction zone characteristics...
Fully anisotropic undrained effects on short-term wellbore stability of arbitrarily inclined wells in transversely isotropic formations
August 2026
The immediate undrained poroelastic response after drilling is critical for short-term wellbore stability in low-permeability formations. Despite its significance, existing analytical undrained wellbore...
Mechanical characteristics of deep to ultra-deep sandstones: A comparison study based on rock mechanical and hydraulic fracturing experiments
August 2026
Understanding the evolution of sandstone mechanical behavior under high pressure and high temperature (HPHT) is crucial for the efficient development of ultra-deep tight reservoirs. In this study, triaxial...
Investigation of hydrocyclone coupled with particles for enhancing oil–water separation
August 2026
Efficient oil-water separation is essential for treating produced fluids in petroleum engineering. This study investigates performance enhancement in hydrocyclones coupled with particles through theoretical...
