4D seismic feasibility study for enhanced oil recovery (EOR) with CO2 injection in a mature North Sea field

Hamed Amini, Erick Raciel Alvarez, David Wilkinson, Jim Lorsong, Julian Slater

Research output: Contribution to conferencePoster

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Abstract

A mature North Sea field with a long history of water flooding has been modelled to predict the potential for enhanced oil recovery (EOR) with CO2 injection. This technique has the potential to further extend the life of the field by extracting more oil and to store the injected CO2 in the reservoir. A feasibility study was conducted to assess whether 4D (time-lapse) seismic could be used as a monitoring tool during CO2 injection. Different approaches were employed in this project; the initial examination using a 4D risk assessment table (Lumley et al., 1997) suggests that 4D seismic can be applied. For a more quantitative analysis, a petro-elastic model was designed to capture both the saturation and pressure signatures from the injected CO2. 1D modelling using fluid substitution at well locations, and simulator to seismic modelling in conjunction with the compositional simulation model was performed to predict the three dimensional 4D signatures within the simulation model grid. Based on this analysis a seismic impedance change of up to 9% is predicted which is above the limit that is typically considered for 4D applications. The discrimination between pressure and saturation signals is also discussed and the possibility to use 4D seismic to detect pressure changes was evaluated. This study makes suggestions regarding the seismic survey characteristics and appropriate timing to acquire the monitor surveys.
Original languageEnglish
Publication statusPublished - 2014
Event4th EAGE CO2 Geological Storage Workshop 2014: Demonstrating Storage Integrity and Building Confidence in CCS - Stavanger, Norway
Duration: 22 Apr 201424 Apr 2014

Conference

Conference4th EAGE CO2 Geological Storage Workshop 2014: Demonstrating Storage Integrity and Building Confidence in CCS
CountryNorway
CityStavanger
Period22/04/1424/04/14

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Recovery
Risk assessment
Substitution reactions
Simulators
Fluids
Oils
Monitoring
Chemical analysis
Water

Keywords

  • 4D seismic EOR CCS CO2 time-lapse

Cite this

Amini, H., Alvarez, E. R., Wilkinson, D., Lorsong, J., & Slater, J. (2014). 4D seismic feasibility study for enhanced oil recovery (EOR) with CO2 injection in a mature North Sea field. Poster session presented at 4th EAGE CO2 Geological Storage Workshop 2014: Demonstrating Storage Integrity and Building Confidence in CCS, Stavanger, Norway.

4D seismic feasibility study for enhanced oil recovery (EOR) with CO2 injection in a mature North Sea field. / Amini, Hamed; Alvarez, Erick Raciel; Wilkinson, David; Lorsong, Jim; Slater, Julian.

2014. Poster session presented at 4th EAGE CO2 Geological Storage Workshop 2014: Demonstrating Storage Integrity and Building Confidence in CCS, Stavanger, Norway.

Research output: Contribution to conferencePoster

Amini, H, Alvarez, ER, Wilkinson, D, Lorsong, J & Slater, J 2014, '4D seismic feasibility study for enhanced oil recovery (EOR) with CO2 injection in a mature North Sea field' 4th EAGE CO2 Geological Storage Workshop 2014: Demonstrating Storage Integrity and Building Confidence in CCS, Stavanger, Norway, 22/04/14 - 24/04/14, .
Amini H, Alvarez ER, Wilkinson D, Lorsong J, Slater J. 4D seismic feasibility study for enhanced oil recovery (EOR) with CO2 injection in a mature North Sea field. 2014. Poster session presented at 4th EAGE CO2 Geological Storage Workshop 2014: Demonstrating Storage Integrity and Building Confidence in CCS, Stavanger, Norway.
Amini, Hamed ; Alvarez, Erick Raciel ; Wilkinson, David ; Lorsong, Jim ; Slater, Julian. / 4D seismic feasibility study for enhanced oil recovery (EOR) with CO2 injection in a mature North Sea field. Poster session presented at 4th EAGE CO2 Geological Storage Workshop 2014: Demonstrating Storage Integrity and Building Confidence in CCS, Stavanger, Norway.
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abstract = "A mature North Sea field with a long history of water flooding has been modelled to predict the potential for enhanced oil recovery (EOR) with CO2 injection. This technique has the potential to further extend the life of the field by extracting more oil and to store the injected CO2 in the reservoir. A feasibility study was conducted to assess whether 4D (time-lapse) seismic could be used as a monitoring tool during CO2 injection. Different approaches were employed in this project; the initial examination using a 4D risk assessment table (Lumley et al., 1997) suggests that 4D seismic can be applied. For a more quantitative analysis, a petro-elastic model was designed to capture both the saturation and pressure signatures from the injected CO2. 1D modelling using fluid substitution at well locations, and simulator to seismic modelling in conjunction with the compositional simulation model was performed to predict the three dimensional 4D signatures within the simulation model grid. Based on this analysis a seismic impedance change of up to 9{\%} is predicted which is above the limit that is typically considered for 4D applications. The discrimination between pressure and saturation signals is also discussed and the possibility to use 4D seismic to detect pressure changes was evaluated. This study makes suggestions regarding the seismic survey characteristics and appropriate timing to acquire the monitor surveys.",
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AU - Alvarez, Erick Raciel

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AU - Lorsong, Jim

AU - Slater, Julian

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N2 - A mature North Sea field with a long history of water flooding has been modelled to predict the potential for enhanced oil recovery (EOR) with CO2 injection. This technique has the potential to further extend the life of the field by extracting more oil and to store the injected CO2 in the reservoir. A feasibility study was conducted to assess whether 4D (time-lapse) seismic could be used as a monitoring tool during CO2 injection. Different approaches were employed in this project; the initial examination using a 4D risk assessment table (Lumley et al., 1997) suggests that 4D seismic can be applied. For a more quantitative analysis, a petro-elastic model was designed to capture both the saturation and pressure signatures from the injected CO2. 1D modelling using fluid substitution at well locations, and simulator to seismic modelling in conjunction with the compositional simulation model was performed to predict the three dimensional 4D signatures within the simulation model grid. Based on this analysis a seismic impedance change of up to 9% is predicted which is above the limit that is typically considered for 4D applications. The discrimination between pressure and saturation signals is also discussed and the possibility to use 4D seismic to detect pressure changes was evaluated. This study makes suggestions regarding the seismic survey characteristics and appropriate timing to acquire the monitor surveys.

AB - A mature North Sea field with a long history of water flooding has been modelled to predict the potential for enhanced oil recovery (EOR) with CO2 injection. This technique has the potential to further extend the life of the field by extracting more oil and to store the injected CO2 in the reservoir. A feasibility study was conducted to assess whether 4D (time-lapse) seismic could be used as a monitoring tool during CO2 injection. Different approaches were employed in this project; the initial examination using a 4D risk assessment table (Lumley et al., 1997) suggests that 4D seismic can be applied. For a more quantitative analysis, a petro-elastic model was designed to capture both the saturation and pressure signatures from the injected CO2. 1D modelling using fluid substitution at well locations, and simulator to seismic modelling in conjunction with the compositional simulation model was performed to predict the three dimensional 4D signatures within the simulation model grid. Based on this analysis a seismic impedance change of up to 9% is predicted which is above the limit that is typically considered for 4D applications. The discrimination between pressure and saturation signals is also discussed and the possibility to use 4D seismic to detect pressure changes was evaluated. This study makes suggestions regarding the seismic survey characteristics and appropriate timing to acquire the monitor surveys.

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