Results 21 to 30 of about 663,642 (299)

Fluid-rock interaction and dissolution of feldspar in the Upper Triassic Xujiahe tight sandstone, western Sichuan Basin, China

open access: yesOpen Geosciences, 2018
Secondary porosity in the Upper Triassic Xujiahe tight sandstone of the western Sichuan Basin is mainly the product of feldspar dissolution. In the Xu-4 Member, the upper reservoir of the Xujiahe Formation, feldspars are dissolved to a significant extent
Liu Sibing   +4 more
doaj   +1 more source

The geochemical characteristics and origin analysis of the botryoidal dolomite in the Upper Sinian Dengying Formation in the Sichuan Basin, China

open access: yesJournal of Natural Gas Geoscience, 2019
Botryoidal dolomite has great value for petroleum exploration and has dominantly developed in the middle and lower part of Member II in the Sinian Dengying Formation in the Sichuan Basin.
Anping Hu   +6 more
doaj   +1 more source

Control of paleogeographic pattern on sedimentary differentiation of evaporite-carbonate symbiotic system: A case study of the sixth sub-member of Ordovician Majiagou Formation M5 Member in central-eastern Ordos Basin, NW China

open access: yesPetroleum Exploration and Development, 2022
The relationship between paleogeographic pattern and sedimentary differentiation of evaporite-carbonate symbiotic system is examined based on logging, core and thin section data, by taking the sixth sub-member of fifth member of Ordovician Majiagou ...
Shoukang ZHONG   +10 more
doaj   +1 more source

Alkali/Surfactant/Polymer Flooding in the Daqing Oilfield Class II Reservoirs Using Associating Polymer

open access: yesJournal of Chemistry, 2013
Hydrophobically modified associating polyacrylamide (HAPAM) has good compatibility with the Daqing heavy alkylbenzene sulfonate surfactant. The HAPAM alkali/surfactant/polymer (ASP) system can generate ultralow interfacial tension in a wide range of ...
Ru-Sen Feng   +4 more
doaj   +1 more source

A review on slip boundary conditions at the nanoscale: recent development and applications

open access: yesBeilstein Journal of Nanotechnology, 2021
The slip boundary condition for nanoflows is a key component of nanohydrodynamics theory, and can play a significant role in the design and fabrication of nanofluidic devices.
Ruifei Wang   +7 more
doaj   +1 more source

Role of the sediments of two tropical dam reservoirs in the flux of metallic elements to the water column [PDF]

open access: yes, 2012
In tropical climates, the high rainfall and temperature, throughout the annual cycle, allow high leaching rates of metallic elements from the basin upstream, which accumulate in the reservoirs.
Barriga, Fernando   +3 more
core   +1 more source

The Prediction of liquid holdup in horizontal pipe with BP neural network

open access: yesEnergy Science & Engineering, 2020
Liquid holdup is one of the most critical factors for the formation of pipe effusion, which is closely related to the efficiency of pipe transportation.
Rongge Xiao   +5 more
doaj   +1 more source

Numerical Simulation on Radial Well Deflagration Fracturing Based on Phase Field Method

open access: yesEnergies, 2023
A radial well has a unique wellbore configuration. Fracture propagation in radial well deflagration fracturing is studied rarely. The mechanism of interaction between deflagration fractures, natural fractures, and micro-fractures is still unknown.
Diguang Gong   +5 more
doaj   +1 more source

Particle models with self sustained current

open access: yes, 2017
We present some computer simulations run on a stochastic CA (cellular automaton). The CA simulates a gas of particles which are in a channel, the interval $[1,L]$ in $\mathbb Z$, but also in "reservoirs" $\mathcal R_1$ and $\mathcal R_2$.
Colangeli, Matteo   +2 more
core   +1 more source

White noise flashing Brownian pump [PDF]

open access: yes, 2007
A Brownian pump of particles powered by a stochastic flashing ratchet mechanism is studied. The pumping device is embedded in a finite region and bounded by particle reservoirs.
A. Gomez-Marin   +5 more
core   +3 more sources

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