Empirical modeling of gravity drainage in fractured porous media

Sohrab Zendehboudi, Ioannis Chatzis, Ali Shafiei, Maurice B. Dusseault

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Gravity drainage is considered to be the main mechanism in primary oil production from naturally fractured reservoirs, but mathematical models to adequately predict the oil recovery and flux rate between the matrix and fracture network under gravity drainage are rarely described in the literature. To address this lacuna, gas-oil contact movement and oil recovery rates in a thin glass-bead-packed simulator were measured, allowing for the capture of information about the matrix-fracture fluid-transfer process. A two-dimensional mathematical model was developed to numerically simulate the process under the same conditions as the experiments, and then empirical models were proposed for oil production in such fractured systems because the final liquid recovery was found to be correlated to dimensionless groups, such as the Bond number. The empirical model approach was then extended to predict the matrix-fracture liquid-transfer rate during the free-fall gravity drainage process. On the basis of experimental data and empirical correlations, the matrix-fracture liquid flux rate appears to be proportional to the liquid level difference in the matrix and fracture. These correlations were tested against numerical simulation results and actual field data of oil production by free-fall gravity drainage. The empirical models have been judged to perform acceptably in the prediction of the oil production and fluid-transfer rate in the oil-gas gravity drainage cases studied.

Original languageEnglish
Pages (from-to)1229-1241
Number of pages13
JournalEnergy and Fuels
Volume25
Issue number3
DOIs
Publication statusPublished - Mar 17 2011
Externally publishedYes

Fingerprint

Drainage
Porous materials
Gravitation
Oils
Liquids
Gas oils
Recovery
Mathematical models
Fluxes
Fluids
Simulators
Glass
Computer simulation
Experiments

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology

Cite this

Empirical modeling of gravity drainage in fractured porous media. / Zendehboudi, Sohrab; Chatzis, Ioannis; Shafiei, Ali; Dusseault, Maurice B.

In: Energy and Fuels, Vol. 25, No. 3, 17.03.2011, p. 1229-1241.

Research output: Contribution to journalArticle

Zendehboudi, S, Chatzis, I, Shafiei, A & Dusseault, MB 2011, 'Empirical modeling of gravity drainage in fractured porous media', Energy and Fuels, vol. 25, no. 3, pp. 1229-1241. https://doi.org/10.1021/ef1015507
Zendehboudi, Sohrab ; Chatzis, Ioannis ; Shafiei, Ali ; Dusseault, Maurice B. / Empirical modeling of gravity drainage in fractured porous media. In: Energy and Fuels. 2011 ; Vol. 25, No. 3. pp. 1229-1241.
@article{8b21b98038f241578da214d3eff8588e,
title = "Empirical modeling of gravity drainage in fractured porous media",
abstract = "Gravity drainage is considered to be the main mechanism in primary oil production from naturally fractured reservoirs, but mathematical models to adequately predict the oil recovery and flux rate between the matrix and fracture network under gravity drainage are rarely described in the literature. To address this lacuna, gas-oil contact movement and oil recovery rates in a thin glass-bead-packed simulator were measured, allowing for the capture of information about the matrix-fracture fluid-transfer process. A two-dimensional mathematical model was developed to numerically simulate the process under the same conditions as the experiments, and then empirical models were proposed for oil production in such fractured systems because the final liquid recovery was found to be correlated to dimensionless groups, such as the Bond number. The empirical model approach was then extended to predict the matrix-fracture liquid-transfer rate during the free-fall gravity drainage process. On the basis of experimental data and empirical correlations, the matrix-fracture liquid flux rate appears to be proportional to the liquid level difference in the matrix and fracture. These correlations were tested against numerical simulation results and actual field data of oil production by free-fall gravity drainage. The empirical models have been judged to perform acceptably in the prediction of the oil production and fluid-transfer rate in the oil-gas gravity drainage cases studied.",
author = "Sohrab Zendehboudi and Ioannis Chatzis and Ali Shafiei and Dusseault, {Maurice B.}",
year = "2011",
month = "3",
day = "17",
doi = "10.1021/ef1015507",
language = "English",
volume = "25",
pages = "1229--1241",
journal = "Energy & Fuels",
issn = "0887-0624",
publisher = "American Chemical Society",
number = "3",

}

TY - JOUR

T1 - Empirical modeling of gravity drainage in fractured porous media

AU - Zendehboudi, Sohrab

AU - Chatzis, Ioannis

AU - Shafiei, Ali

AU - Dusseault, Maurice B.

PY - 2011/3/17

Y1 - 2011/3/17

N2 - Gravity drainage is considered to be the main mechanism in primary oil production from naturally fractured reservoirs, but mathematical models to adequately predict the oil recovery and flux rate between the matrix and fracture network under gravity drainage are rarely described in the literature. To address this lacuna, gas-oil contact movement and oil recovery rates in a thin glass-bead-packed simulator were measured, allowing for the capture of information about the matrix-fracture fluid-transfer process. A two-dimensional mathematical model was developed to numerically simulate the process under the same conditions as the experiments, and then empirical models were proposed for oil production in such fractured systems because the final liquid recovery was found to be correlated to dimensionless groups, such as the Bond number. The empirical model approach was then extended to predict the matrix-fracture liquid-transfer rate during the free-fall gravity drainage process. On the basis of experimental data and empirical correlations, the matrix-fracture liquid flux rate appears to be proportional to the liquid level difference in the matrix and fracture. These correlations were tested against numerical simulation results and actual field data of oil production by free-fall gravity drainage. The empirical models have been judged to perform acceptably in the prediction of the oil production and fluid-transfer rate in the oil-gas gravity drainage cases studied.

AB - Gravity drainage is considered to be the main mechanism in primary oil production from naturally fractured reservoirs, but mathematical models to adequately predict the oil recovery and flux rate between the matrix and fracture network under gravity drainage are rarely described in the literature. To address this lacuna, gas-oil contact movement and oil recovery rates in a thin glass-bead-packed simulator were measured, allowing for the capture of information about the matrix-fracture fluid-transfer process. A two-dimensional mathematical model was developed to numerically simulate the process under the same conditions as the experiments, and then empirical models were proposed for oil production in such fractured systems because the final liquid recovery was found to be correlated to dimensionless groups, such as the Bond number. The empirical model approach was then extended to predict the matrix-fracture liquid-transfer rate during the free-fall gravity drainage process. On the basis of experimental data and empirical correlations, the matrix-fracture liquid flux rate appears to be proportional to the liquid level difference in the matrix and fracture. These correlations were tested against numerical simulation results and actual field data of oil production by free-fall gravity drainage. The empirical models have been judged to perform acceptably in the prediction of the oil production and fluid-transfer rate in the oil-gas gravity drainage cases studied.

UR - http://www.scopus.com/inward/record.url?scp=79952854414&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79952854414&partnerID=8YFLogxK

U2 - 10.1021/ef1015507

DO - 10.1021/ef1015507

M3 - Article

AN - SCOPUS:79952854414

VL - 25

SP - 1229

EP - 1241

JO - Energy & Fuels

JF - Energy & Fuels

SN - 0887-0624

IS - 3

ER -