Transportation of waxy crude oil
17 Sep 2019 Clariant Oil Services launches WAXTREAT SubZero Pour Point the transportation of waxy crude oils and the mitigation of wax deposition. In order to optimize profitability in the handling of waxy crude oil pipelines, an literatures discuss methods of handling the transportation of waxy crude oils in. 1 Feb 1995 In evaluations of the wax potential of a crude, the climate of the area Petroleum -- Drilling & Production; 022000 -- Petroleum-- Transport, 7 May 2018 crude oil and to evaluate the suitable inhibitor for the waxy crude oil that provides the transportation in the hydrocarbon pipeline systems. vessel surfaces. COPI™ provides important benefits in: • Crude oil production. • Crude oil transportation. • Storage. Wax crystallites can start forming in crude oil.
Research articleFull text access. Numerical study of flow restart in the pipeline filled with weakly compressible waxy crude oil in non-isothermal condition. Lalit Kumar, Kistofer Paso, Johan Sjöblom.
Transportation of waxy crude oil has received significant attentions as its pour point temperature is well above the seabed temperature at production fields. There have been different techniques used to alleviate flow problems prior to pumping . Wax inhibitor, use of chemicals, pour point depressant, catalytic treatment, thermal treatment and wax control polymers were among few mechanisms used earlier. TRANSPORTATION OF WAXY CRUDE OILS 1. Select pumps to allow a parallel/series arrangement, which could transport at slower. 2. Use of separate low flow, high head pumps for restarting. 3. Side traps at frequent intervals to allow short sections to be started separately. 4. Reverse pumping to Crude Oil Transportation: Nigerian Niger Delta Waxy Crude Elijah Taiwo 1, John Otolorin 1 and Tinuade Afolabi 2 1Obafemi Awolowo University, Ile-Ife, De partment of Chemical Engineering, 2Ladoke Akintola University of Technology, Ogbomoso, Department of Chemical Engineering, Nigeria 1. Introduction DEFINITION OF A WAXY CRUDE A waxy crude is defined as a crude oil having a high pour point and low API gravity, and often containing paraffin wax (alkanes). A waxy crude is distinguished by the fact that it exhibits non-Newtonian viscosity behaviour at temperatures below about 20F above the pour point. Flow start-up and transportation of waxy crude oil in pipelines. Edited by Fernando Pinho, Ian Frigaard. Last update 27 November 2019. Actions for selected articles. Select all / Deselect all. Download PDFs Export citations. Show all article previews Show all article previews. When the temperature of a waxy crude oil is lowered, first the heavier fractions of its wax content start to freeze out. For a waxy crude it is customary to measure its cloud point and pour point according to ASTM methods. Pipeline Plugging due to Wax Deposition . A.
fraction of oil in flowing system, energy cost of transportation, cost of chemical and operations maintenance cost in decreasing order of elasticity. Keywords: Waxy crude, Pour-point, Oil pipeline, Economics. INTRODUCTION Generally, all cases of organic deposition comprising paraffins and asphaltenes are referred to
In petroleum industries, waxy crude oil is normally found in petroleum production. Wax formation and precipitation during pipeline transport of waxy crude oils Waxy crude oils represent a significant amount of the petroleum reserves and productions worldwide, and the pipeline transportation of waxy crude oils is an Background: The background of using the pour point depressant is that wax precipitation causes several challenges during oil extraction and pipeline transport
26 Jan 2015 Then the restart process of a wax crude oil pipeline is investigated “Isothermal start-up of pipeline transporting waxy crude oil,” Journal of
Research articleFull text access. Numerical study of flow restart in the pipeline filled with weakly compressible waxy crude oil in non-isothermal condition. Lalit Kumar, Kistofer Paso, Johan Sjöblom. Transportation of waxy crude oil faces great challenges due to shear and temperature dependency. At high temperatures, waxy crude exhibits low viscous Newtonian behavior where the resistance to flow due to friction is low, and hence low pumping pressure is required to transport it. Virtual Special Issue: Flow start-up and transportation of waxy crude oil in pipelines. Image from Chala et al. This is the third virtual special issue of the Journal of Non-Newtonian Fluid Mechanics. Here we discuss developments in flow assurance that are concerned with startup and transportation of waxy crude oils. The special issue is One of the problems faced by the petroleum industry is the wax deposition in pipelines during transportation of waxy crude oil. Oil companies dealing with waxy crude often spend millions of dollars in remedial procedures. An ideal design should use an accurate mathematical model that would include all salient features of wax deposition and waxy crude transport to predict wax deposition during crude oil transportation. The increased flow of latent heat during the crystallization of the waxy crude oil paraffins (approximately 8 mW) compared with the non-waxy crude oil (approximately 1 mW for the WAT and 2 mW for the second crystallization event) results in a much larger area, which indicates a large mass of crystallized paraffin. However, the precipitation and deposition of waxes during the transportation of these waxy crude oils in the pipelines contribute to several issues, such as the flowability reduction, excessive
The increased flow of latent heat during the crystallization of the waxy crude oil paraffins (approximately 8 mW) compared with the non-waxy crude oil (approximately 1 mW for the WAT and 2 mW for the second crystallization event) results in a much larger area, which indicates a large mass of crystallized paraffin.
TRANSPORTATION OF WAXY CRUDE OILS 1. Select pumps to allow a parallel/series arrangement, which could transport at slower. 2. Use of separate low flow, high head pumps for restarting. 3. Side traps at frequent intervals to allow short sections to be started separately. 4. Reverse pumping to Crude Oil Transportation: Nigerian Niger Delta Waxy Crude Elijah Taiwo 1, John Otolorin 1 and Tinuade Afolabi 2 1Obafemi Awolowo University, Ile-Ife, De partment of Chemical Engineering, 2Ladoke Akintola University of Technology, Ogbomoso, Department of Chemical Engineering, Nigeria 1. Introduction
At present, the most successful waxy crude oil modification and transportation process is the addition of pour point depressant. The role of pour point depressants is to lower the freezing point and low-temperature fluidity of crude oil.