Results 31 to 40 of about 86,492 (309)

Naturally Fractured Eocene Flints [PDF]

open access: yesNature, 1920
AT a meeting of the Geological Society of London, held on May 5, Mr. S. Hazzledine Warren read a paper entitled “A Natural Eolith Factory beneath the Thanet Sand.” The discovery of flints fractured by natural pressure at the base of the Eocene is not, however, a novel experience, as, in 1910, M. l'Abbe H. Breuil described (“Sur la presence d'Eolithes a
openaire   +2 more sources

Hydraulic fracture propagation in naturally fractured reservoirs: Complex fracture or fracture networks [PDF]

open access: yesJournal of Natural Gas Science and Engineering, 2019
Understanding the behavior of fluid-driven hydraulic fracture in naturally fractured reservoirs is crucial in the development of geothermal energy and unconventional reservoirs. This study presents a fully-coupled numerical model to investigate hydraulic propagation in naturally fractured reservoirs, along with a comprehensive discussion on field ...
openaire   +2 more sources

Reactivation of natural fractures network by hydraulic fracturing [PDF]

open access: yesE3S Web of Conferences, 2020
Modelling the process of induced fracture initiation, propagation and interaction with natural fractures is a very challenged task. Significant progress has been made in recent years in the development of complex fracture models to address the needs for more suitable design tools than the conventional planar fracture models.
L. L. Alvarez   +3 more
openaire   +2 more sources

Integrated Reservoir Engineering-Geological Evaluation of Fracability and Optimization of Hydraulic Fracture Propagation

open access: yesCejing jishu
To optimize the complexity of the fracture network during hydraulic fracturing in reservoirs for enhanced oil and gas recovery, it is essential to integrate geological heterogeneity and engineering parameters, and establish a fracability evaluation model
JIE Zhijun   +6 more
doaj   +1 more source

Numerical simulation of wormhole propagation considering natural micro-fractures

open access: yes, 2020
Natural micro-fractures in carbonate reservoirs are generally developed and have little effect on porosity, but has a great influence on the simulation results.
ZHAO Liqiang   +5 more
core   +1 more source

Zein‐Based Adhesives: Sustainable Extraction and Application in Bioadhesive Technologies

open access: yesAdvanced Engineering Materials, EarlyView.
Zein is extracted from corn gluten meal using a simple and scalable process with high yield (~90%). The resulting protein is applied in bioadhesives modified with Ca2+ and Fe3+ ions, exhibiting substrate‐dependent adhesion. The findings demonstrate competitive bonding performance and highlight the role of ionic interactions in tuning adhesion ...
Paula Bertolino Sanvezzo   +3 more
wiley   +1 more source

Damage Model for Reservoirs with Multisets of Natural Fractures and Its Application in the Simulation of Hydraulic Fracturing

open access: yesEnergies, 2022
The presence of natural fractures can significantly affect the quality of hydraulic fracturing operations in tightsand and shale or oil/gas formations.
Huifang Hu   +4 more
doaj   +1 more source

Variable Stiffness Flexure Structures Enabled by Phase‐Change Gallium and Adhesive Interfacial Locking for Soft Robotic Applications

open access: yesAdvanced Engineering Materials, EarlyView.
A flexure‐based variable stiffness structure is developed by integrating phase‐change modulation and adhesive interfacial locking of gallium. The design enables a wide stiffness variability, transitioning from soft, flexible behavior to rigid, load‐supporting performance.
Sungjin Kim   +2 more
wiley   +1 more source

Characterization of the spatial arrangement of opening-mode fractures [PDF]

open access: yes, 2007
textIn spite of the abundance of opening-mode fractures in the earth's upper crust, knowledge about their spatial arrangement remains limited. The spatial arrangement of fractures refers to the patterns of fracture positions in space.
Gómez Torres, Leonel Augusto, 1969-
core  

The Effect of Hydraulic Fracture Geometry on Well Productivity in Shale Oil Plays with High Pore Pressure

open access: yesEnergies, 2021
We propose three idealized hydraulic fracture geometries (“fracture scenarios”) likely to occur in shale oil reservoirs characterized by high pore pressure and low differential in situ stresses.
Daniela A. Arias Ortiz   +3 more
doaj   +1 more source

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