The Use of Pour-Point Depressant Additive in the Beatrice Field

1986 ◽  
Author(s):  
M. Fielder ◽  
R.W. Johnson
Keyword(s):  
Pour Point ◽  
Pour Point Depressant ◽  
Depressant Additive ◽  
Point Depressant

Development of pour point depressants for crude oil and study of their properties

2021 ◽  
pp. 90-96
Author(s):  
K.I. Matiev ◽  
◽  
A.M. Samedov ◽  
F.M. Akhmedov ◽  
◽  
...  
Keyword(s):  
Crude Oil ◽  
Pour Point ◽  
Viscosity Reduction ◽  
Ionic Surfactant ◽  
Oil Viscosity ◽  
Pour Point Depressant ◽  
Depressant Additive ◽  
Point Depressant ◽  
Pour Point Depressants

A pour point depressant additive has been developed to reduce the pour point of paraffinic oils. The depressant contains a (non-ionic) surfactant, a depressant component and a solvent. The depressor properties of the developed compositions have been studied. It has been established that while adding the compositions to the oil mixture, at a concentration of 0.02% wt. the pour point decreases from +31 oC to -3 - +7 оС, and at a concentration of 0.04% wt. up to -5- + 4 оС. Under the effect of the developed compositions the oil viscosity at + 35 оС decreases from 46.3 mPa·s to 22.1-27.7 mPa·s, and at + 40 °C - from 38.2 mPa·s to 16.6-21.6 mPa·s. Viscosity reduction performance at the indicated temperatures are 40.2-51.6% and 43.5-56.5%, respectively. Compositions 8, 14 and 17 exhibit higher depressor properties.

Production of arctic-grade diesel fuel with pour-point depressant additive

1980 ◽  
Vol 16 (5) ◽  
pp. 300-302
Author(s):  
L. A. Potolovskii ◽  
B. A. �nglin ◽  
T. N. Veretennikova ◽  
V. G. Nikolaeva ◽  
G. D. Sinitsyna
Keyword(s):  
Diesel Fuel ◽  
Pour Point ◽  
Pour Point Depressant ◽  
Depressant Additive ◽  
Point Depressant

Phase transitions in middle-distillate waxes: effect of a pour-point depressant additive

Fuel ◽  
1995 ◽  
Vol 74 (6) ◽  
pp. 928-931 ◽  
Author(s):  
S.P. Srivastava ◽  
R.S. Tandon ◽  
P.S. Verma ◽  
D.C. Pandey ◽  
S.K. Goyal
Keyword(s):  
Phase Transitions ◽  
Pour Point ◽  
Pour Point Depressant ◽  
Middle Distillate ◽  
Depressant Additive ◽  
Point Depressant

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.

Influence of poly (methacrylate-co-maleic anhydride) pour point depressant with various pendants on low-temperature flowability of diesel fuel

Fuel ◽  
2018 ◽  
Vol 216 ◽  
pp. 898-907 ◽  
Author(s):  
Guangwen Xu ◽  
Yuan Xue ◽  
Zhicheng Zhao ◽  
Xiang Lian ◽  
Hualin Lin ◽  
...  
Keyword(s):  
Low Temperature ◽  
Maleic Anhydride ◽  
Diesel Fuel ◽  
Pour Point ◽  
Pour Point Depressant ◽  
Point Depressant

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
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