Results 21 to 30 of about 547,890 (248)

Will the climate of plant origins influence the chemical profiles of cuticular waxes on leaves of Leymus chinensis in a common garden experiment?

open access: yesEcology and Evolution, 2020
Cuticular wax covering the leaf surface plays important roles in protecting plants from biotic and abiotic stresses. Understanding the way in which plant leaf cuticles reflect their growing environment could give an insight into plant resilience to ...
Yang Li   +6 more
doaj   +1 more source

A review of the mechanism and role of wax inhibitors in the wax deposition and precipitation [PDF]

open access: yes, 2019
The continuous depletion of global oil reserves with the propensity for light distillates propels the oil and gas industry to explore heavier fractions of crude oils with significant amount of paraffin waxes.
Hikmat, Said Al-Salim   +2 more
core   +4 more sources

Selection of effective wax (deposition) inhibitors to oil production and transportation at the Kondinskoye oil field

open access: yesИзвестия высших учебных заведений: Нефть и газ, 2020
The article discusses the results of a study on the selection of wax inhibitors that can be used at the Kondinskoye oil field during transportation and dehydration of the emulsion.Asphaltene precipitation is one of the most serious issues in oil ...
E. N. Skvortsova, O. P. Deryugina
doaj   +1 more source

Occurrence and Characterization of Paraffin Wax Formed in Developing Wells and Pipelines

open access: yesEnergies, 2019
Deposition and precipitation of paraffin wax in pipelines are major problems in the production, transfer, storage, and processing of crude oil. To prevent complete clogging, it is necessary to minimize and remove deposited wax in pipelines and tubing ...
Marwa M. El-Dalatony   +6 more
doaj   +1 more source

Thermodynamic modeling of wax precipitation in waxy condensate oil systems and its field application [PDF]

open access: yesAIP Advances
During the development and production of condensate gas reservoirs, temperature, pressure, and other operating conditions change as oil and gas are continuously lifted to the surface. Under these conditions, solid-phase substances such as wax, resin, and
Jiajun Hong   +7 more
doaj   +1 more source

Effect of Wax Composition and Shear Force on Wax Aggregation Behavior in Crude Oil: A Molecular Dynamics Simulation Study

open access: yesMolecules, 2022
To explore the influence of different wax components and the shear effect exerted by the pump and pipe wall in the process of crude oil pipeline transportation on the microbehavior of wax aggregation in crude oil at low temperatures, molecular dynamics ...
Shuang Wang   +5 more
doaj   +1 more source

Wax precipitation from North Sea crude oils. 3. Precipitation and dissolution of wax studied by differential scanning calorimetry

open access: yes, 1991
Differential scanning calorimetry was used to study wax precipitation from a series of North Sea crude oils by measuring glass transition temperatures, wax precipitation and dissolution temperatures (wax appearance and disappearance, respectively), and ...
Nielsen, A.B.   +3 more
core   +1 more source

New Nuclear Magnetic Resonance Approaches on the Evolution of Wax Mobility during Wax Crystallization [PDF]

open access: yes, 2021
Wax crystallization at low temperature is one of the main problems affecting flow assurance during oil production. Wax inhibitors, such as pour point depressants (PPDs), and crude oil components, such as asphaltenes, are estimated to impact wax ...
Gisle Øye   +7 more
core   +2 more sources

Inhibitor-Wax Interactions and Wax Crystallization: New Experimental Approaches and Techniques

open access: yes, 2018
Issues related to wax crystallization are one of the major challenges faced during crude oil production. Wax inhibitors and pour point depressants (PPD) are in common use for wax prevention, as they can delay gelling and ensure low enough crude oil ...
Ruwoldt, Jost
core   +1 more source

Study on Wax Deposition Law in Daqing Gulong Shale Oil [PDF]

open access: yesE3S Web of Conferences
Daqing Gulong shale oil exhibits elevated wax content, a high wax precipitation point, and a high freezing point. However, its oil density and viscosity are relatively low, making it susceptible to wax crystal precipitation. The risk of pipeline clogging
Zhao Xuefeng   +5 more
doaj   +1 more source

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