The effect of capillary-trapped CO2 on oil recovery and CO2 sequestration during the WAG process

Joohyung Kim; Myungjae Lee; Yeonkyeong Lee; Youngsoo Lee; Wonmo Sung

doi:10.1080/15567036.2018.1495776

The effect of capillary-trapped CO₂ on oil recovery and CO₂ sequestration during the WAG process

Joohyung Kim
, Myungjae Lee
, Yeonkyeong Lee
, Youngsoo Lee
, Wonmo Sung^*

^*Corresponding author for this work

Major of Mineral Resources and Energy Engineering

Research output: Contribution to journal › Journal article › peer-review

3 Scopus citations

Abstract

This study investigated capillary-trapped CO₂ depending on the consideration of hysteresis effect in relative permeability for various water-alternation-gas (WAG) operating conditions to ascertain the oil production process. From the simulation results of CO₂ WAG flooding method, the trapped CO₂ led to prevent water-flow, in which CO₂ acts as a gas blocker near the well. It caused the injection pressure increase during water injection period. As the trapped CO₂ in pores increased, the reservoir pressure was also increased and maintained above minimum miscibility pressure (MMP). Ultimately, it was concluded that the reservoir was kept under miscible conditions throughout WAG process, reducing residual oil and increasing oil recovery.

Original language	English
Pages (from-to)	2137-2143
Number of pages	7
Journal	Energy Sources, Part A: Recovery, Utilization and Environmental Effects
Volume	40
Issue number	18
DOIs	https://doi.org/10.1080/15567036.2018.1495776
State	Published - 2018.09.17

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 13 Climate Action

Keywords

Capillary trapping
CO sequestration
hysteresis
oil recovery
WAG

Quacquarelli Symonds(QS) Subject Topics

Engineering - Electrical & Electronic
Engineering - Petroleum

Access to Document

10.1080/15567036.2018.1495776

Cite this

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title = "The effect of capillary-trapped CO2 on oil recovery and CO2 sequestration during the WAG process",

abstract = "This study investigated capillary-trapped CO2 depending on the consideration of hysteresis effect in relative permeability for various water-alternation-gas (WAG) operating conditions to ascertain the oil production process. From the simulation results of CO2 WAG flooding method, the trapped CO2 led to prevent water-flow, in which CO2 acts as a gas blocker near the well. It caused the injection pressure increase during water injection period. As the trapped CO2 in pores increased, the reservoir pressure was also increased and maintained above minimum miscibility pressure (MMP). Ultimately, it was concluded that the reservoir was kept under miscible conditions throughout WAG process, reducing residual oil and increasing oil recovery.",

keywords = "Capillary trapping, CO sequestration, hysteresis, oil recovery, WAG",

author = "Joohyung Kim and Myungjae Lee and Yeonkyeong Lee and Youngsoo Lee and Wonmo Sung",

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T1 - The effect of capillary-trapped CO2 on oil recovery and CO2 sequestration during the WAG process

AU - Kim, Joohyung

AU - Lee, Myungjae

AU - Lee, Yeonkyeong

AU - Lee, Youngsoo

AU - Sung, Wonmo

PY - 2018/9/17

Y1 - 2018/9/17

N2 - This study investigated capillary-trapped CO2 depending on the consideration of hysteresis effect in relative permeability for various water-alternation-gas (WAG) operating conditions to ascertain the oil production process. From the simulation results of CO2 WAG flooding method, the trapped CO2 led to prevent water-flow, in which CO2 acts as a gas blocker near the well. It caused the injection pressure increase during water injection period. As the trapped CO2 in pores increased, the reservoir pressure was also increased and maintained above minimum miscibility pressure (MMP). Ultimately, it was concluded that the reservoir was kept under miscible conditions throughout WAG process, reducing residual oil and increasing oil recovery.

AB - This study investigated capillary-trapped CO2 depending on the consideration of hysteresis effect in relative permeability for various water-alternation-gas (WAG) operating conditions to ascertain the oil production process. From the simulation results of CO2 WAG flooding method, the trapped CO2 led to prevent water-flow, in which CO2 acts as a gas blocker near the well. It caused the injection pressure increase during water injection period. As the trapped CO2 in pores increased, the reservoir pressure was also increased and maintained above minimum miscibility pressure (MMP). Ultimately, it was concluded that the reservoir was kept under miscible conditions throughout WAG process, reducing residual oil and increasing oil recovery.

KW - Capillary trapping

KW - CO sequestration

KW - hysteresis

KW - oil recovery

KW - WAG

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DO - 10.1080/15567036.2018.1495776

M3 - Journal article

AN - SCOPUS:85049639368

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VL - 40

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JO - Energy Sources, Part A: Recovery, Utilization and Environmental Effects

JF - Energy Sources, Part A: Recovery, Utilization and Environmental Effects

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