Results 21 to 30 of about 1,391,739 (293)

Influence of shear on rheology of the crude oil treated by flow improver

open access: yesEnergy Reports, 2019
Because the influence of shear on the rheology of waxy crude oil must be considered according to the composition and structure of the waxy crude oil transported via pipeline when a new pipeline is constructed, the risks associated with changes in the ...
Qun Lei   +5 more
doaj   +1 more source

Thermal–hydraulic coupling model and operating conditions analysis of waxy crude oil pipeline restart process after shutdown

open access: yesAdvances in Mechanical Engineering, 2020
To realize the safe and economic operation of a waxy crude oil pipeline, a thermal–hydraulic model in an unsteady state was established for the restart process of waxy crude oil.
Qinglin Cheng   +5 more
doaj   +1 more source

An Experimental Study on Evaluation of Factors Influencing the Viscosity and Viscoelastic Properties of Waxy Crude Oil [PDF]

open access: yesIranian Journal of Oil & Gas Science and Technology, 2020
The influences of several operating factors on the viscosity of the Isfahan refinery waxy crude oil sample are studied through conducting some rheological shear rotational tests.
Yavar Karimi, Ali Reza Solaimany Nazar
doaj   +1 more source

Measurement and Prediction of Time-independent and Time-dependent Rheological Behavior of Waxy Crude Oil [PDF]

open access: yesIranian Journal of Oil & Gas Science and Technology, 2017
Wax deposition phenomenon changes the rheological behavior of waxy crude oil completely. In the current work, the rheological time-dependent and time-independent behaviors of waxy crude oil samples are studied and flow curve and compliance function are ...
Yavar Karimi, Ali Reza Solaimany Nazar
doaj   +1 more source

Effect of pipe diameter on heat transfer characteristics of waxy crude oil pipeline during shutdown

open access: yesCase Studies in Thermal Engineering, 2020
Additional specific heat capacity method and momentum source term method are used to establish the mathematical model of the heat transfer process in different diameter waxy crude oil pipeline, and the finite volume method is used to solve the ...
Yue Zhao
doaj   +1 more source

Molecular Characteristics of Fatty Acid Methyl Ester (FAME) in Waxy Crude as Flow Improver

open access: yesChemical Engineering Transactions, 2022
Mitigation of wax deposition is of major interest, especially in the oil and gas industry, to minimize the flow assurance and production problems. In view of financial savings, the currently established method still has more opportunities to improve ...
Ameer Naqiuddin Baharudin   +4 more
doaj   +1 more source

Numerical Study on the Static Cooling of Waxy Crude Oil in the Vault Tank

open access: yesIEEE Access, 2019
By means of additional specific heat capacity and momentum source terms methods, the physical and mathematical models of the heat transfer process of waxy crude oil during its static cooling in the vault tank are established.
Jian Zhao   +3 more
doaj   +1 more source

Study of linseed oil, its biodiesel and xylene as flow improver for Nigerian waxy crude oils

open access: yesPetroleum Research, 2022
In this study, the physicochemical properties of linseed and linseed biofuel were studied and their effect on the flow properties of Nigerian waxy crude oil at different volume fractions was investigated.
Ogunkunle Temitope Fred   +4 more
doaj   +1 more source

The effect of physical properties on the gelation behavior of waxy crude oil during shutdown

open access: yesCase Studies in Thermal Engineering, 2020
In this paper, the effect of different viscosity and specific heat capacity on the gelation behavior of waxy crude oil was studied. The additional specific heat capacity method and the momentum source term method are used for numerical simulation.
Yuanhao Li   +4 more
doaj   +1 more source

Influence of oil composition on the cold flowability improvement of electric field treatment

open access: yesYou-qi chuyun, 2022
Electric field treatment is a new method to improve the cold flowability of waxy crude oil. Its basic principle is electrorheological behaviors of waxy oil, and its mechanism is the interfacial polarization of wax particles.
Hongying LI   +6 more
doaj   +1 more source

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