Terpolymers as flow improvers for Mexican crude oils

Laura V. Castro; Eugenio A. Flores; Flavio Vazquez

doi:10.1021/ef101074m

Terpolymers as flow improvers for Mexican crude oils

Laura V. Castro, Eugenio A. Flores, Flavio Vazquez

Escuela Superior de Ingeniería Química e Industrias Extractivas (ESIQIE)

Research output: Contribution to journal › Article › peer-review

53 Scopus citations

Abstract

The rheological behavior of dilute solutions from different terpolymers was investigated over a wide range of temperatures (20-45°C) and shear rates (0.1-300 s^-1). The investigation focuses on the effect of three co-monomer contents, their molecular weight, the terpolymer, and the viscosity-temperature relationship of a Mexican crude oil (MCO). Terpolymers with different contents of styrene (S), n-butylacrylate (BA), and vinyl acetate (VA) were synthesized through semi-continuous emulsion polymerization. The composition of the terpolymers was evaluated by nuclear magnetic resonance (NMR) spectroscopy. The average molecular weight and polydispersity of the polymers were determined through size-exclusion chromatography (SEC). Both the untreated crude oil and the one treated with a solution of terpolymer exhibited non-Newtonian behavior. The results confirm that the viscosity of crude oil is reduced when the terpolymers have a high percentage of S and small amounts of BA or VA. The molecular weight of terpolymers plays a fundamental role in their performance as viscosity reducers.

Original language	English
Pages (from-to)	539-544
Number of pages	6
Journal	Energy and Fuels
Volume	25
Issue number	2
DOIs	https://doi.org/10.1021/ef101074m
State	Published - 17 Feb 2011

Access to Document

10.1021/ef101074m

Cite this

@article{5a9d9c4975af4e89be1a4203600d8313,

title = "Terpolymers as flow improvers for Mexican crude oils",

abstract = "The rheological behavior of dilute solutions from different terpolymers was investigated over a wide range of temperatures (20-45°C) and shear rates (0.1-300 s-1). The investigation focuses on the effect of three co-monomer contents, their molecular weight, the terpolymer, and the viscosity-temperature relationship of a Mexican crude oil (MCO). Terpolymers with different contents of styrene (S), n-butylacrylate (BA), and vinyl acetate (VA) were synthesized through semi-continuous emulsion polymerization. The composition of the terpolymers was evaluated by nuclear magnetic resonance (NMR) spectroscopy. The average molecular weight and polydispersity of the polymers were determined through size-exclusion chromatography (SEC). Both the untreated crude oil and the one treated with a solution of terpolymer exhibited non-Newtonian behavior. The results confirm that the viscosity of crude oil is reduced when the terpolymers have a high percentage of S and small amounts of BA or VA. The molecular weight of terpolymers plays a fundamental role in their performance as viscosity reducers.",

author = "Castro, {Laura V.} and Flores, {Eugenio A.} and Flavio Vazquez",

year = "2011",

month = feb,

day = "17",

doi = "10.1021/ef101074m",

language = "Ingl{\'e}s",

volume = "25",

pages = "539--544",

journal = "Energy and Fuels",

issn = "0887-0624",

number = "2",

}

TY - JOUR

T1 - Terpolymers as flow improvers for Mexican crude oils

AU - Castro, Laura V.

AU - Flores, Eugenio A.

AU - Vazquez, Flavio

PY - 2011/2/17

Y1 - 2011/2/17

N2 - The rheological behavior of dilute solutions from different terpolymers was investigated over a wide range of temperatures (20-45°C) and shear rates (0.1-300 s-1). The investigation focuses on the effect of three co-monomer contents, their molecular weight, the terpolymer, and the viscosity-temperature relationship of a Mexican crude oil (MCO). Terpolymers with different contents of styrene (S), n-butylacrylate (BA), and vinyl acetate (VA) were synthesized through semi-continuous emulsion polymerization. The composition of the terpolymers was evaluated by nuclear magnetic resonance (NMR) spectroscopy. The average molecular weight and polydispersity of the polymers were determined through size-exclusion chromatography (SEC). Both the untreated crude oil and the one treated with a solution of terpolymer exhibited non-Newtonian behavior. The results confirm that the viscosity of crude oil is reduced when the terpolymers have a high percentage of S and small amounts of BA or VA. The molecular weight of terpolymers plays a fundamental role in their performance as viscosity reducers.

AB - The rheological behavior of dilute solutions from different terpolymers was investigated over a wide range of temperatures (20-45°C) and shear rates (0.1-300 s-1). The investigation focuses on the effect of three co-monomer contents, their molecular weight, the terpolymer, and the viscosity-temperature relationship of a Mexican crude oil (MCO). Terpolymers with different contents of styrene (S), n-butylacrylate (BA), and vinyl acetate (VA) were synthesized through semi-continuous emulsion polymerization. The composition of the terpolymers was evaluated by nuclear magnetic resonance (NMR) spectroscopy. The average molecular weight and polydispersity of the polymers were determined through size-exclusion chromatography (SEC). Both the untreated crude oil and the one treated with a solution of terpolymer exhibited non-Newtonian behavior. The results confirm that the viscosity of crude oil is reduced when the terpolymers have a high percentage of S and small amounts of BA or VA. The molecular weight of terpolymers plays a fundamental role in their performance as viscosity reducers.

UR - http://www.scopus.com/inward/record.url?scp=79951913331&partnerID=8YFLogxK

U2 - 10.1021/ef101074m

DO - 10.1021/ef101074m

M3 - Artículo

AN - SCOPUS:79951913331

SN - 0887-0624

VL - 25

SP - 539

EP - 544

JO - Energy and Fuels

JF - Energy and Fuels

IS - 2

ER -

Terpolymers as flow improvers for Mexican crude oils

Abstract

Access to Document

Other files and links

Fingerprint

Cite this