scholarly journals Comparison of pour point depressant (PPD) ethylene-vinyl acetate (EVA) and nano-montmorillonite

2021 ◽  
Vol 894 (1) ◽  
pp. 012019
Author(s):  
Z D Nurfajrin ◽  
B Satiyawira ◽  
R A Putra
Keyword(s):  
Crude Oil ◽  
Vinyl Acetate ◽  
Pour Point ◽  
Ethylene Vinyl Acetate ◽  
Oil Viscosity ◽  
Pour Point Depressant ◽  
Oil Transportation ◽  
Point Depressant ◽  
Wax Deposits ◽  
Wax Crystals

Abstract One of the problems with oil production is stuck of oil transportation flow in the pipeline caused by wax deposits. The high wax content in crude oil causes the oil viscosity value to increase so that crude oil has High Pour Point Oil (HPPO) properties. In this research, using crude oil sample with initial pour point of 31oC and viscosity of 556 cP. This samples are classified as heavy oil. Therefore, this sample is suitable for use as an experiment in this research. There are several methods to deal with HPPO. One chemical method used to overcome this problem is adding Pour Point Depressant (PPD) to crude oil. This PPD functions to decrease pour point value by binding wax crystals in crude oil. In this study, two types of PPD were compared, Ethylene-Vinyl Acetate (EVA) and Nano-Montmorillonite (Nano-MMT). Both can reduce the pour point value on crude oil, but PPD EVA shows a more excellent reduction than nano-MMT. The results show that EVA is better at binding crystals than nano-MMT. After the injection of 400 ppm EVA, the pour point value of crude oil could be decreased up to 24oC, and the viscosity also decreased by 185 cP.

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.

Research on Performance of the Monomers about Acrylic Pour Point Depressant

2012 ◽  
Vol 518-523 ◽  
pp. 884-887 ◽  
Author(s):  
Jing Chang Wang ◽  
Jian Tao Zhao ◽  
Zhong Hua Du ◽  
Chun Ming Liu ◽  
Xu Dong
Keyword(s):  
Maleic Anhydride ◽  
Crude Oil ◽  
Vinyl Acetate ◽  
Functional Groups ◽  
Pour Point ◽  
Pour Point Depressant ◽  
Point Depressant ◽  
Pour Point Depressants

Kinds of pour point depressants were prepared from common monomers, octadecyl acrylate, maleic anhydride, styrene, acrylamide and vinyl acetate. Because the monomers have various functional groups, the performance of the polymers that were prepared from different monomers showed different. The performance of the pour point depressants on solubility in diesel and the drop of pour point on Daqing crude oil was studied. The results showed that styrene and vinyl acetate could increase the solubility of the pour point depressants; maleic anhydride and acrylamide could improve the drop of crude oil pour point; tercopolymer pour point depressants are more effective on the flow of crude oil than dimeric polymers, the highest drop of pour point was 14°C. Meanwhile, compostional pour point depressants are the best of them.

Sign in / Sign up

Export Citation Format

Share Document