Pour Point Depression Transportation and Drag Reduction Transportation of Crude Oil

2018 ◽  
pp. 333-353
Author(s):  
Caili Dai ◽  
Fulin Zhao
Keyword(s):  
Drag Reduction ◽  
Crude Oil ◽  
Pour Point

Drag Reduction and Velocity Profiles Distribution of Crude Oil Flow in Spiral Pipes

2015 ◽  
Vol 9 (1) ◽  
pp. 1 ◽  
Author(s):  
Yanuar Yanuar ◽  
Kurniawan T. Waskito ◽  
Gunawan Gunawan ◽  
Budiarso Budiarso
Keyword(s):  
Drag Reduction ◽  
Crude Oil ◽  
Velocity Profiles ◽  
Oil Flow

Effect of Pour Point Depressants on the Impedance Spectroscopy of Waxy Crude Oil

2020 ◽  
Vol 35 (1) ◽  
pp. 433-443
Author(s):  
Hongying Li ◽  
Chaohui Chen ◽  
Qian Huang ◽  
Yifei Ding ◽  
Yu Zhuang ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Crude Oil ◽  
Pour Point ◽  
Waxy Crude Oil ◽  
Waxy Crude ◽  
Pour Point Depressants

Wax Content of Crude Oil: A Function of Kinematic Viscosity and Pour Point

2015 ◽  
Vol 33 (4) ◽  
pp. 381-387 ◽  
Author(s):  
A. Majhi ◽  
Y. K. Sharma ◽  
V. S. Kukreti ◽  
K. P. Bhatt ◽  
R. Khanna
Keyword(s):  
Crude Oil ◽  
Pour Point ◽  
Kinematic Viscosity ◽  
Wax Content

Application of Synthesized Novel Biodegradable Pour-Point Depressant from Natural Source on Flow Assurance of Indian Waxy Crude Oil and Comparative Studies with Commercial Pour-Point Depressant

SPE Journal ◽  
2021 ◽  
pp. 1-13
Author(s):  
Biswadeep Pal ◽  
Tarun Kumar Naiya
Keyword(s):  
Interfacial Tension ◽  
Crude Oil ◽  
Pour Point ◽  
Microscopic Analysis ◽  
Proton Nuclear Magnetic Resonance ◽  
Flow Assurance ◽  
Pour Point Depressant ◽  
Waxy Crude Oil ◽  
Waxy Crude ◽  
Point Depressant

Summary Pour-point depressants (PPDs) were synthesized from natural sources and used in waxy crude oil transportation to reduce the pour point and improve flow. A biodegradable PPD (BPPD) was synthesized and tested to mitigate crude oil flow assurance problems in the present work. The transesterification process was used to synthesize coconut oil ethyl ester (COEE, termed as BPPD). Fourier transform electron spectroscopy (FTIR), proton nuclear magnetic resonance (H-NMR), and microscopic analysis were performed for better understanding of mechanisms for both BPPD and a commercially available PPD named PPD-A. The pour point of crude oil was reduced by 12 and 9°C after the addition of 800 ppm BPPD and PPD-A, respectively. The microscopic analysis confirms that the crystals of wax converted to very fine and dispersed particles during mixing of additives, which in turn increase flowability. BPPD performs better to reduce interfacial tension than PPD-A. The maximum reduction of 19% in interfacial tension was observed after the addition of 800 ppm BPPD. BPPD alters the wettability of the pipeline surface from intermediate wet to water-wet within 60 seconds, which results in reduced slip velocity and consequently lessens the deposition of wax. As a result, crude oils will not stick to the wall of the pipe surface and will experience less resistance to flow through pipelines. FTIR analysis indicated that long-chain alkane and aromatic groups are responsible for a higher pour point, and their concentration level was reduced after the addition of BPPD. The viscosity of crude oil was reduced by almost 94% after the addition of 800 ppm BPPD with crude oil, which in turn minimizes pumping costs for crude oil. As a result, the total project cost was reduced substantially. Biodegradability tests confirm that the BPPD is biodegradable and nontoxic. Due to its biodegradability and nontoxic nature, BPPD has a promising capacity to be used in the petroleum industry for easier pipeline transportation of waxy crude.

Effect of solid contents and the ratio of EVA/ Octadecylacrylate blends on Paraffin Inhibition and pour point temperature of waxy crude oil

2021 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Ragab A. A. ◽  
M. A. Sayed ◽  
Sameh A. Elbanna ◽  
Eslam Hafez ◽  
M. Roushdi ◽  
...  
Keyword(s):  
Crude Oil ◽  
Pour Point ◽  
Waxy Crude Oil ◽  
Point Temperature ◽  
Waxy Crude

scholarly journals Evaporation of Heavy Crude Oil in Soil

2021 ◽  
pp. 59-62
Author(s):  
Etini Etefia ◽  
L. O. Odokuma
Keyword(s):  
Molecular Weight ◽  
Crude Oil ◽  
Pour Point ◽  
Terrestrial Ecosystem ◽  
Heavy Crude Oil ◽  
Percentage Reduction ◽  
Oil Spillage ◽  
Heavy Crude ◽  
Rate Of Evaporation ◽  
Oil Density

Heavy crude oil spillage on soil threatens productivity and affects the natural biota of the ecosystem. Evaporation is an important parameter increases crude oil density, viscosity and fraction of lower molecular weight substances which reduce its infiltration into the soil and groundwater. The evaporation of heavy crude oil showed API of 21.5, viscosity of 15mm2/s, density 0.8952 g/cm3, pour point of 11.37. The crude oil was exposed to solar radiation for 35 days. The percentage reduction in mass of the crude oil and temperature on five day interval showed 8.22(38OC) on day 0, on day 5 was 8.13(34oC), on day 10 was 5.92(39oC), on day 15 was 5.38(39oC), on day 20 was 3.16(37oC), on day 25 was 2.94(31oC), on day 20 was 2.56 (41oC) and on day 35 was 1.79(38oC). The lighter molecules evaporated first leaving the heavier molecules behind causing a reduction in the rate of evaporation with time. This analysis will be provide insight to modelling oil spill in terrestrial ecosystem.

scholarly journals The Use of Biobased Surfactant Obtained by Enzymatic Syntheses for Wax Deposition Inhibition and Drag Reduction in Crude Oil Pipelines

Catalysts ◽  
2016 ◽  
Vol 6 (5) ◽  
pp. 61 ◽  
Author(s):  
Zhihua Wang ◽  
Xueying Yu ◽  
Jiaxu Li ◽  
Jigang Wang ◽  
Lei Zhang
Keyword(s):  
Drag Reduction ◽  
Crude Oil ◽  
Wax Deposition ◽  
Biobased Surfactant ◽  
Oil Pipelines

Synthesis and Evaluation of Grafted EVAL as Pour Point Depressant for Waxy Crude Oil

2018 ◽  
Vol 57 (25) ◽  
pp. 8612-8619 ◽  
Author(s):  
Yongwen Ren ◽  
Long Fang ◽  
Zhaojun Chen ◽  
Hui Du ◽  
Xiaodong Zhang
Keyword(s):  
Crude Oil ◽  
Pour Point ◽  
Pour Point Depressant ◽  
Waxy Crude Oil ◽  
Waxy Crude ◽  
Point Depressant

Oil Temperature Prediction of Long-Distance Hot-Crude-Oil Pipeline Based on GA-BP Optimization

2020 ◽  
Author(s):  
Tao Yu ◽  
Peng Dong ◽  
Yang Yu ◽  
Jinzhou Song ◽  
Jie Zhang
Keyword(s):  
Prediction Model ◽  
Crude Oil ◽  
Pour Point ◽  
Theoretical Formula ◽  
Production Data ◽  
Influence Coefficient ◽  
Long Distance ◽  
Temperature Prediction ◽  
Oil Pipeline ◽  
Actual Production

Abstract Due to the high pour point of the oil products transported in the long-distance high wax crude oil pipeline, in order to ensure the operation safety, it is necessary to adopt heating transmission technology, so as to ensure that the oil temperature along the pipeline is 3–5 °C higher than the pour point, that is to say, the oil temperature is the most important operation parameter of the long-distance hot oil pipeline, and the accurate prediction and control of the oil temperature is the premise of the pipeline safety optimization. Aiming at the problems of large prediction error and poor applicability of the previous theoretical formula, this paper studies the establishment of oil temperature prediction model by using data mining algorithms such as Back Propagation (BP) neural network, and improves the prediction efficiency and accuracy of the model by using Genetic Algorithm (GA) optimization. The correlation coefficient formula is used to calculate the influence coefficient of oil temperature, ground temperature, pipeline transportation and other parameters on the inlet oil temperature of the downstream station, so as to obtain the input parameters of the model. The actual production data training model is downloaded through SCADA system, and the prediction accuracy of the control model is ±0.5 °C. Compared with BP model and other theoretical formulas, the accuracy and efficiency of GA-BP oil temperature prediction model are greatly improved, and the adaptability is better. The GA-BP oil temperature prediction model trained according to the actual production data can be effectively applied to the future pipeline big data platform, which lays a theoretical foundation for the intelligent control of the pipeline.

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