Results 81 to 90 of about 361,980 (305)

A quantitative evaluation for well pattern adaptability in ultra-low permeability oil reservoirs: A case study of Triassic Chang 6 and Chang 8 reservoirs in Ordos Basin

open access: yesPetroleum Exploration and Development, 2018
: Based on the previous studies and development practice in recent 10 years, a quantitative evaluation method for the adaptability of well patterns to ultra-low permeability reservoirs was established using cluster analysis and gray correlation method ...
Jiyong ZHAO   +6 more
doaj   +1 more source

Bio‐Inspired Molecular Events in Poly(Ionic Liquids)

open access: yesAdvanced Functional Materials, EarlyView.
Originating from dipolar and polar inter‐ and intra‐chain interactions of the building blocks, the topologies and morphologies of poly(ionic liquids) (PIL) govern their nano‐ and micro‐processibility. Modulating the interactions of cation‐anion pairs with aliphatic dipolar components enables the tunability of properties, facilitated by “bottom‐up ...
Jiahui Liu, Marek W. Urban
wiley   +1 more source

Petroleum geological features and exploration prospect of Linhe Depression in Hetao Basin, China

open access: yesPetroleum Exploration and Development, 2018
After over four decades of exploration, a major breakthrough has been made in the Hetao Basin recently, that is, commercial oil flow of 62.6 m3/d is tested from the Paleogene Linhe Formation in Well Song 5.
Suotang FU   +7 more
doaj   +1 more source

Pulse switching for high energy lasers [PDF]

open access: yes, 1981
A saturable inductor switch for compressing the width and sharpening the rise time of high voltage pulses from a relatively slow rise time, high voltage generator to an electric discharge gas laser (EDGL) also provides a capability for efficient energy ...
Laudenslager, J. B., Pacala, T. J.
core   +1 more source

Coal permeability: Gas slippage linked to permeability rebound

open access: yesFuel, 2018
Abstract The main factors/mechanisms that influence coal permeability are effective stress, swelling, shrinkage, deformation and gas slippage. After an extended period of gas production, coal can have a rebound phenomenon where permeability increases with increasing effective stress.
Niu, Y   +4 more
openaire   +2 more sources

Deciphering Small Molecule Diffusion Parameters Across Light Responsive Polymersome Membranes

open access: yesAdvanced Functional Materials, EarlyView.
Light‐responsive polymersomes bearing donor–acceptor Stenhouse adducts (DASAs) enable programmable control over small‐molecule transport across synthetic membranes. By systematically varying DASA density, an optimal functionalization regime is identified that maximizes light‐gated permeability.
Farzina Matubbar   +7 more
wiley   +1 more source

Nanothermometry in Living Cells: Physical Limits, Conceptual and Material Challenges

open access: yesAdvanced Functional Materials, EarlyView.
Heat and temperature are fundamental to life. When nanothermometers began probing regions as small as a living cell, they triggered controversial claims of large intracellular temperature gradients. We review physical constraints energy‐conservation, entropy production, thermodynamic fluctuations, and molecular dynamics.
Taras Plakhotnik
wiley   +1 more source

Preparation and performance evaluation of new waterproof-locking nanoemulsion

open access: yese-Polymers
This paper presents the preparation of a novel waterproof-locking nanoemulsion, synthesized using 3-allyloxy-2-hydroxy-1-propanesulfonic acid sodium salt, acrylamide, butyl acrylate, and methyl methacrylate as raw materials via one-pot free radical ...
Zhang Xiang   +5 more
doaj   +1 more source

Deposition of Yanchang Formation deep-water sandstone under the control of tectonic events in the Ordos Basin

open access: yesPetroleum Exploration and Development, 2013
A large area of deep-water sandstone was formed under the combined action of delta and gravity flow in the central Ordos Basin during the depositional period of the Ch6 and Ch7 oil-bearing formations of the Yanchang Formation. According to U-Pb dating of
Hua YANG, Xiuqin DENG
doaj   +1 more source

Reservoir formation conditions and key technologies for exploration and development in Qingcheng large oilfield

open access: yesPetroleum Research, 2020
The Qingcheng oilfield, the largest shale oil field in China, was discovered in 2019 in source rock of Chang 7 Member of Mesozoic Yanchang Formation, Changqing Oilfield in Ordos Basin, with newly increased proven geological reserves of 358 million tons ...
Suotang Fu   +6 more
doaj   +1 more source

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