Results 21 to 30 of about 6,094,197 (290)

The drainage system performance in peat soil with permeability reduction [PDF]

open access: yesE3S Web of Conferences, 2019
Construction in waterlogged areas requires special design solutions and expensive site preparation works. Operating experience shows that the efficiency of drainage systems in peat soil decreases over time. This article describes factors to be taken into
Nikitin Andrey, Zaborskaya Olga
doaj   +1 more source

Performance of Hydraulically Fractured Wells in Xinjiang Oilfield: Experimental and Simulation Investigations on Laumontite-Rich Tight Glutenite Formation

open access: yesEnergies, 2021
PetroChina’s Xinjiang oilfield has a large quantity of tight oil reserves and hydraulic fracturing technology has been widely used to achieve commercial production.
Shuai Yang   +4 more
doaj   +1 more source

An Experimental Study on Permeability Reduction Resulting from Mixed BaSO4, CaSO4, and SrSO4 Scale Deposition in Porous Media during Water Injection [PDF]

open access: yesIranian Journal of Oil & Gas Science and Technology, 2015
Sulfate scale deposition (BaSO4, CaSO4, and SrSO4) is a common problem in oilfield operations around the world, which causes significant formation damage during production and injection activities. This paper presents the results of an experimental study
Saeed Naseri   +2 more
doaj   +1 more source

Turbulent Drag Reduction Using Anisotropic Permeable Substrates [PDF]

open access: yesFlow, Turbulence and Combustion, 2018
The behaviour of turbulent flow over anisotropic permeable substrates is studied using linear stability analysis and direct numerical simulations (DNS). The flow within the permeable substrate is modelled using the Brinkman equation, which is solved analytically to obtain the boundary conditions at the substrate-channel interface for both the DNS and ...
Gómez-de-Segura, G   +2 more
openaire   +2 more sources

Influence of Rock Fabric on Physical Properties of Shale Oil Reservoir Under Effective Pressure Conditions [PDF]

open access: yesLithosphere
The physical properties of shale oil reservoirs under overburden pressure are of great significance for reservoir prediction and evaluation during exploration and development.
Yu Ma   +5 more
doaj   +1 more source

Effect of propolis gel on the in vitro reduction of dentin permeability [PDF]

open access: yesJournal of Applied Oral Science, 2011
The aim of this study was to evaluate the capacity of potassium oxalate, fluoride gel and two kinds of propolis gel to reduce the hydraulic conductance of dentin, in vitro.The methodology used for the measurement of hydraulic conductance of dentin in the present study was based on a model proposed in literature.
Sales-Peres, Silvia Helena de Carvalho   +6 more
openaire   +6 more sources

Integrated Analysis of Permeability Reduction Caused by Polymer Retention for Better Understanding Polymer Transport

open access: yesJournal of Chemistry, 2015
Polymer retention is one of the most important factors to govern polymer propagation through porous media, determining whether successful or not. The focus of previous studies has been limited to polymer concentration loss caused by the retention; not ...
ByungIn Choi, Jinsuk Choi, Kun Sang Lee
doaj   +1 more source

Permeability and setting time of bio-mediated soil under various medium concentrations

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2021
The bio-clogging using bacteria can be an eco-friendly and sustainable alternative to conventional grouting methods for seepage control. However, it remains unclear to date how the dilute concentration of bacterium and medium during field installation ...
Treesukon Treebupachatsakul   +1 more
doaj   +1 more source

Experimental Investigation on Asphaltene Deposition in Porous Media During Miscible Gas Injection [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2007
In this work the likelihood of asphaltene deposition problems during dynamic displacement of oil by natural gas in unconsolidated porous media is experimentally inspected.
Sayed Ali Mousavi Dehghani   +3 more
doaj  

Polymer Retention Leading to Non-Darcy Flow in Porous Media—Influence of Molecular Weight, Composition and Mechanical Degradation

open access: yesColloids and Interfaces
Polymer flooding is a well-established chemical enhanced oil recovery (EOR) method, primarily aimed at improving sweep efficiency. However, the interplay between polymer properties and porous media, particularly the influence on permeability reduction ...
Abdulmajeed Murad   +2 more
doaj   +1 more source

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