Mg-C-O isotopes and elements reveal the origin of dolostone in the Middle Jurassic Buqu Formation
Available online 14 November 2024
The origin of dolostone in the Middle Jurassic Buqu Formation of the Plateau Basin has been a subject of prolonged debate. This study combines detailed petrological observations with analyses of Mg-C-O...
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Novel dual-enhanced stimulation for safe and efficient marine hydrate production
Available online 14 November 2024
The commercial exploitation of natural gas hydrates is currently facing several challenges, including low production rates, limited recovery areas, and brief periods of continuous production. To address...
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Evidence for active generation and seepage of sub-salt natural gas/condensate blend in the east offshore Nile Delta, Egypt: integrated geochemical, petrophysical and seismic attribute approaches
Available online 13 November 2024
Offshore Nile Delta in Egypt represents an enormous hydrocarbon province with recent projected gas and condensate discoveries of more than 50 trillion cubic feet “TCF”. Most of these occur in the post-salt...
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Effects of multi-scale wave-induced fluid flow on seismic dispersion, attenuation and frequency-dependent anisotropy in periodic-layered porous-cracked media
Available online 13 November 2024
The wave-induced fluid flow (WIFF) occurring in the ubiquitous layered porous media (e.g., shales) usually causes the appreciable seismic energy dissipation, which further leads to the frequency dependence...
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Experimental investigation of hybrid enhanced oil recovery techniques for Ugnu Heavy Oil on Alaska North Slope
Available online 12 November 2024
The Alaska North Slope (ANS) is endowed with a substantial reservoir of heavy oil, estimated at 12–18 billion barrels, primarily concentrated within the Ugnu reservoirs. These deposits, situated at...
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Evaluation of cement density utilizing through-casing X-Ray logging method
Available online 9 November 2024
In the evaluation of cementing quality, quantitatively assessing cement density is crucial along with identifying the cementation degree at the interface using acoustic logging. While the 137Cs-based...
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Multiscale Characterization of the Albian-Cenomanian Reservoir System Behavior: A Case Study from the North East Abu Gharadig Basin, North Western Desert, Egypt
Available online 8 November 2024
Since its discovery in 2010, the NEAG 2 has been one of the most productive oil fields of the Badr El-Din Petroleum Company (BAPETCO) in the northern Western Desert of Egypt. The Albian-Cenomanian reservoir...
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CO2-EOR microscopic mechanism under injection–production coupling technology in low-permeability reservoirs
Available online 7 November 2024
Injection–production coupling (IPC) technology holds substantial potential for boosting oil recovery and enhancing economic efficiency. Despite this potential, discussion on gas injection coupling,...
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Unraveling the corrosion behavior and corrosion scale evolution of N80 steel in high-temperature CO2 environment: The role of flow regimes
Available online 5 November 2024
During CO2 transportation and storage, metal equipment such as oilfield pipelines suffers from severe CO2 corrosion, especially in harsh downhole injection equipment. In this study, we investigated...
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Predicting the productivity of fractured horizontal wells using few-shot learning
Available online 5 November 2024
Predicting the productivity of multistage fractured horizontal wells plays an important role in exploiting unconventional resources. In recent years, machine learning (ML) models have emerged as a new...
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Pore formation and evolution mechanisms during hydrocarbon generation in organic-rich marl
Available online 2 November 2024
Marine organic-rich marl is not only a high-quality hydrocarbon source of conventional oil and gas, but also a new type and field of unconventional oil and gas exploration. An understanding of its pore...
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Characterization of chemical composition of high viscosity heavy oils: Macroscopic properties, and semi-quantitative analysis of molecular composition using high-resolution mass spectrometry
October 2024
Heavy oil is an important resource in current petroleum exploitation, and the chemical composition information of heavy oil is crucial for revealing its viscosity-inducing mechanism and solving practical...
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Influence of the mechanical properties of materials on the ultimate pressure-bearing capability of a pressure-preserving controller
October 2024
The pressure-preserving controller is the core part of deep in-situ pressure-preserving coring (IPP-Coring) system, and its pressure-preserving capability is the key to IPP-Coring technology. To achieve...
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The real-time dynamic liquid level calculation method of the sucker rod well based on multi-view features fusion
October 2024
In the production of the sucker rod well, the dynamic liquid level is important for the production efficiency and safety in the lifting process. It is influenced by multi-source data which need to be...
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In-situ laboratory study on influencing factors of pre-SC-CO2 hybrid fracturing effect in shale oil reservoirs
October 2024
Supercritical CO2 (SC-CO2) fracturing, being a waterless fracturing technology, has garnered increasing attention in the shale oil reservoir exploitation industry. Recently, a novel pre-SC-CO2 hybrid...
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Inhibition of wax crystallization and asphaltene agglomeration by core-shell polymer@SiO2 hybride nano-particles
October 2024
The gelation of crude oil with high wax and asphaltene content at low temperatures often results in the block of transportation pipeline in Africa. In recent years, it was reported that surface hydrophobic-modified...
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Curing kinetics and plugging mechanism of high strength curable resin plugging material
October 2024
Lost circulation, a recurring peril during drilling operations, entails substantial loss of drilling fluid and dire consequences upon its infiltration into the formation. As drilling depth escalates,...
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Machine learning methods for predicting CO2 solubility in hydrocarbons
October 2024
The application of carbon dioxide (CO2) in enhanced oil recovery (EOR) has increased significantly, in which CO2 solubility in oil is a key parameter in predicting CO2 flooding performance. Hydrocarbons...
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A novel framework for predicting non-stationary production time series of shale gas based on BiLSTM-RF-MPA deep fusion model
October 2024
Shale gas, as an environmentally friendly fossil energy resource, has gained significant commercial development and shows immense potential. However, accurately predicting shale gas production faces...
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Efficient anti-aliasing and anti-leakage Fourier transform for high-dimensional seismic data regularization using cube removal and GPU
October 2024
Seismic data is commonly acquired sparsely and irregularly, which necessitates the regularization of seismic data with anti-aliasing and anti-leakage methods during seismic data processing. We propose...
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High-temperature resistant polymer nanocomposites with exfoliated organic-modified montmorillonite nanosheets strongly adsorbed on polymer chains
October 2024
It has been demonstrated that almost all polymer-clay nanocomposites show higher temperature stability than that of pure polymer, which is attributed to the active exfoliated clay nanosheet firmly adsorbed...
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Systematic prediction of the gas content, fractures, and brittleness in fractured shale reservoirs with TTI medium
October 2024
The main objective is to optimize the development of shale gas-rich areas by predicting seismic sweet spot parameters in shale reservoirs. We systematically assessed the fracture development, fracture...
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On the efficient non-linear solver for hydraulic fracturing and well cementing simulations based on Anderson acceleration
October 2024
The aim of this study is to create a fast and stable iterative technique for numerical solution of a quasi-linear elliptic pressure equation. We developed a modified version of the Anderson acceleration...
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Transportation and sealing pattern of the temporary plugging ball at the spiral perforation in the horizontal well section
October 2024
Multistage fracturing of horizontal wells is a critical technology for unconventional oil and gas reservoir stimulation. Ball-throwing temporary plugging fracturing is a new method for realizing uniform...
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3D rock physics template-based probabilistic estimation of tight sandstone reservoir properties
October 2024
Quantitative prediction of reservoir properties (e.g., gas saturation, porosity, and shale content) of tight reservoirs is of great significance for resource evaluation and well placements. However,...
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