A study of the effect of gas condesate on the viscosity and storage stability of Omani heavy crude oil

Naoya Shigemoto; Rashid S. Al-Maamari; Baba Y. Jibril; Akihiko Hirayama

doi:10.1021/ef060074h

A study of the effect of gas condesate on the viscosity and storage stability of Omani heavy crude oil

Naoya Shigemoto, Rashid S. Al-Maamari^*, Baba Y. Jibril, Akihiko Hirayama

^*Corresponding author for this work

Petroleum and Chemical Engineering

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

24 Citations (Scopus)

Abstract

Heavy crude oil (density of 0.9571 g/cm³ at 288 K and kinematic viscosity of 7160 mm²/s at 303 K) and natural gas condensate (density of 0.7848 g/cm³ at 288 K and kinematic viscosity of 0.764 mm²/s at 303 K) were sampled from Omani oil fields. The oil was mixed with condensate (5-50 vol %), and the mixture viscosities were measured at the temperature range of 293-348 K. A drastic decrease in kinematic viscosity was achieved. An addition of about 12 vol % of condensate gave a viscosity of 265 mm²/s at 303 K. This made it easier to transport the heavy oil mixtures. The experimental data for the kinematic viscosity [v(mm²/s)] as a function of the gas-condensate fraction (φ) and temperature [T (K)] could be described by an equation: In(In(v)) = (k₁ + k₂·T) + (k₃ + k₄·7)·φ, with a high accuracy. Blends of the heavy oil and the gas condensate were stored to evaluate their stability. Results showed less than 0.05 wt % sludge formation after 2 months.

Original language	English
Pages (from-to)	2504-2508
Number of pages	5
Journal	Energy and Fuels
Volume	20
Issue number	6
DOIs	https://doi.org/10.1021/ef060074h
Publication status	Published - Nov 2006

ASJC Scopus subject areas

General Chemical Engineering
Fuel Technology
Energy Engineering and Power Technology

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10.1021/ef060074h

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title = "A study of the effect of gas condesate on the viscosity and storage stability of Omani heavy crude oil",

abstract = "Heavy crude oil (density of 0.9571 g/cm3 at 288 K and kinematic viscosity of 7160 mm2/s at 303 K) and natural gas condensate (density of 0.7848 g/cm3 at 288 K and kinematic viscosity of 0.764 mm2/s at 303 K) were sampled from Omani oil fields. The oil was mixed with condensate (5-50 vol %), and the mixture viscosities were measured at the temperature range of 293-348 K. A drastic decrease in kinematic viscosity was achieved. An addition of about 12 vol % of condensate gave a viscosity of 265 mm2/s at 303 K. This made it easier to transport the heavy oil mixtures. The experimental data for the kinematic viscosity [v(mm2/s)] as a function of the gas-condensate fraction (φ) and temperature [T (K)] could be described by an equation: In(In(v)) = (k1 + k2·T) + (k3 + k4·7)·φ, with a high accuracy. Blends of the heavy oil and the gas condensate were stored to evaluate their stability. Results showed less than 0.05 wt % sludge formation after 2 months.",

author = "Naoya Shigemoto and Al-Maamari, {Rashid S.} and Jibril, {Baba Y.} and Akihiko Hirayama",

year = "2006",

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AU - Shigemoto, Naoya

AU - Al-Maamari, Rashid S.

AU - Jibril, Baba Y.

AU - Hirayama, Akihiko

PY - 2006/11

Y1 - 2006/11

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AB - Heavy crude oil (density of 0.9571 g/cm3 at 288 K and kinematic viscosity of 7160 mm2/s at 303 K) and natural gas condensate (density of 0.7848 g/cm3 at 288 K and kinematic viscosity of 0.764 mm2/s at 303 K) were sampled from Omani oil fields. The oil was mixed with condensate (5-50 vol %), and the mixture viscosities were measured at the temperature range of 293-348 K. A drastic decrease in kinematic viscosity was achieved. An addition of about 12 vol % of condensate gave a viscosity of 265 mm2/s at 303 K. This made it easier to transport the heavy oil mixtures. The experimental data for the kinematic viscosity [v(mm2/s)] as a function of the gas-condensate fraction (φ) and temperature [T (K)] could be described by an equation: In(In(v)) = (k1 + k2·T) + (k3 + k4·7)·φ, with a high accuracy. Blends of the heavy oil and the gas condensate were stored to evaluate their stability. Results showed less than 0.05 wt % sludge formation after 2 months.

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A study of the effect of gas condesate on the viscosity and storage stability of Omani heavy crude oil

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