Investigation on phase behavior of shale condensate gas under multi-interface effect
September 2025
Shale condensate reservoirs, as a significant unconventional resource, have been gaining increasing interest in recent times. Researchers have developed a variety of models to analyze interfacial effects...
Influence of solvent-to-oil mass ratios on high-pressure asphaltene precipitation
September 2025
Asphaltene precipitation during solvent-based enhanced oil recovery under reservoir conditions impedes production efficiency and degrades oil quality. This study aims to optimize solvent-to-oil mass...
Influence of stress sensitivity on pore structure of tight reservoirs: A Digital core based analysis
September 2025
During the development of tight reservoirs, as the formation pressure decreases, the effective stress on the rock matrix increases. This leads to rock deformation and, consequently, changes in the physical...
Performance evaluation of fracturing-huff-n-percolation-puff (FHnPP) processes in a hydrocarbon reservoir
September 2025
Due to its superior performance on the efficient exploitation of a small fault-block reservoir, a novel technique of fracturing-huff-n-percolation-puff (FHnPP) has received increasing attentions in...
Simulation-driven sensitivity analysis and optimization of critical parameters for maximizing CO2-EOR efficiency
September 2025
The application of Carbon Dioxide (CO2) injection in enhanced oil recovery (EOR) has evolved, making a major benefit for increasing the production level from mature reservoirs. This paper investigates...
New approach for the performance of reservoirs depleted by long horizontal wellbores with closed sections
September 2025
This paper introduces a new approach for reservoir performance where long horizontal wellbores are extended in the porous media with the existence of closed sections. It focuses on the impact of these...
Spatio-temporal characterisation of the Beekeeper Formation of Australia: facies development, mixing of carbonate and siliciclastic materials, and influencing factors
September 2025
The Beekeeper Formation, a mixed carbonate-siliciclastic reservoir, has long been known as a proven gas reservoir in the northern Perth Basin, Australia. However, its characteristics, and spatio-temporal...
Morphometry, bathymetry, gravity analyses and active tectonics of the petroliferous Gulf of Mannar in the Indian sector
September 2025
The Gulf of Mannar has been producing natural gas in the Sri Lankan portion. This indicates that a detail geoscientific study is to be undertaken from the Indian section of the gulf, which can have...
Machine learning approach for modelling and predicting interfacial tension and rheology of crude oil nanoemulsions stabilized by rhamnolipid biosurfactant
September 2025
Forecasting the properties of nanoemulsions without engaging in expensive and time-consuming experimental research can yield significant benefits across multiple applications. This study examines the...
Hydrogen energy system and underground hydrogen storage in depleted reservoirs
September 2025
In a situation where the increase in greenhouse gas emissions in the atmosphere has unfavorably led to global warming, the production of energy from renewable and clean sources, instead of fossil fuels,...
A comparative experimental study on the prediction of renewable oils properties using RGB and HSV image processing techniques
September 2025
In this study, renewable oil properties of Flash Point (0C), Fire Point (0C), Density (kg/m3), Cloud Point (0C), Pour Point (0C), and Viscosity (cST) are predicted using image processing techniques...
Synthesis and examination of graphene oxide grafted with copolymer of maleic acid and acrylic acid as a clay stabilizer for enhancing oil production
Available online 26 September 2025
In oil and gas production operations, wellbore instability is primarily caused by shale hydration. Thus, a thermally stable inhibitor is essential to prevent shale hydration. This research focuses on...
Paleocene spatiotemporal structure and evolution of the Dongying depression in the eastern Bohai Bay Basin: Evidence from seismic interpretation and basalt 40Ar/39Ar dating
Available online 20 September 2025
The Paleocene marked a critical structural transition period from tectonic subduction to extensional rifting in the Bohai Bay Basin. To reconstruct the spatiotemporal structural framework, evolutionary...
Spatially continuous regularization of the parameters of the capacitance–resistance model
Available online 19 September 2025
The capacitance–resistance model (CRM) is a widely-used model for predicting well production rates because it requires the estimation of only a small number of parameters to describe production wells...
Estimation of fluid saturation and pressure distribution throughout a reservoir using machine learning techniques
Available online 2 September 2025
Water saturation is one of the most critical yet often underappreciated petrophysical parameters in reservoir characterization. A wide range of petrophysical and reservoir engineering computations that...
Computation of pressure depletion and well productivity of multi-fractured wells with variable fracture spacing using fast and accurate solution method
Available online 2 September 2025
This study presents a fast method that can model the pressure depletion around hydraulically fractured wells accurately. The Gaussian Pressure-Transient (GPT) method has infinite resolution, because...
A review on advancing clay-based geopolymers for high-temperature oil well cements: Mechanisms, durability, and applications
Available online 21 August 2025
Geopolymers are promising alternatives to Portland cement due to their lower carbon footprint, superior mechanical strength, durability, and reduced shrinkage. However, inconsistent data and significant...
Experimental investigation of tea leaf extract as thinning agent and lubricity enhancer for water-based drilling fluid
Available online 9 August 2025
This study aims to develop a low-cost and environmentally friendly multifunctional thinning agent for water-based mud (WBM) from tea leaf extract (TLE). Matured tea leaves that are not used for tea...
Mechanical analysis and structural optimization of anchorage for split segment inserted tooth slips
Available online 9 August 2025
To meet the operational requirements of slip-type packers within TP140V casing in ultra-deep wells and enhance the anchoring performance and load-bearing capacity of the packer's anchoring mechanism...
Study on the expansion characteristics of oil-based drilling fluid in HTHP wellbore
Available online 7 August 2025
Accurate prediction of oil-based drilling fluid (OBD) behavior under high-temperature, high-pressure (HTHP) conditions in ultra-deep wells is essential for ensuring well control safety. However, research...
Numerical simulation of microbial biohydrogen production under high-pressure, high-temperature conditions for enhanced recovery from depleted reservoirs
Available online 6 August 2025
The growing demand for sustainable energy has intensified interest in biohydrogen production under extreme environmental conditions. This study presents a numerical simulation of hydrogen production...
Quantifying the effect of mineral compositions on the brittleness of shale using the finite element method
Available online 6 August 2025
The emergence of shale oil and gas has markedly boosted the global oil and gas storage and production growth, impacting the strategic energy patterns of numerous countries. However, exploring and exploiting...
Diagenetic calcite-dolomite-pyrite in the organic-rich shales of the Early Silurian Longmaxi Formation in the Yangtze block, South China
Available online 6 August 2025
Carbonate minerals (calcite and dolomite) and pyrite are important brittle minerals in organic-rich shales; however, the mechanism of their formation is still uncertain. This study examined the formation...
An experimental study of proppant transport mechanisms to the pump intake in low-flow oil wells
Available online 5 August 2025
The exploitation of low-flow oil wells following hydraulic fracturing is often hindered by residual proppant and proppant production during early production phases, which can infiltrate pumps and drastically...
Facies-controlled diagenesis and its impact on reservoir quality of carbonate sequences: Cretaceous Sarvak Formation in the Zagros Basin, Iran
Available online 5 August 2025
The Cretaceous Sarvak Formation in the Zagros Basin exhibits complex reservoir heterogeneity controlled by depositional facies and sequence stratigraphy-constrained diagenesis. This study integrates...