Carbon Dioxide Capture, Utilization&Sequestration

Good day all,

We are designing well completion for the CCUS project which is the first of its kind in the country/ company. Recommendations are appreciated on the areas which need to be addressed. A few questions are:

Can well be completed with Carbon Steel, in case there is no moisture (dehydrated gas)
How vital is PVT data, although it is, if not available what can be done

The wellbore hydraulic model was created and a significant increase was noticed in the gas rate with a 100 psi increase in the injection pressure. What could be the possible reason? Phase changes??

Tubing Size                    Injection Pressure (Psi)                             Injection Rate (MMscfd)
    3-1/2"                                     1400                                                                   4
    3-1/2"                                     1500                                                                   12
    3-1/2"                                     1600                                                                   19

What other considerations are important for designing the well completion for CCUS.

Regards,

Hi Sahir,

Think about a corrosion triangle of CO2, water, and carbon steel: you can only have two. The main issue with water is that you can have flow back whenever injection stops, which will start water circulation at the bottom of your well. If you can actively and reliably control this inflow, then carbon steel can be a solution.
A second scenario is loss of integrity in your completion and CO2 bubbling into the A annulus.

As for the hydraulic model, you are always injecting above critical pressure (1090 psi or thereabouts) so CO2 is in its dense phase at the wellhead. Unless friction losses are large, much larger than the hydrostatic head, you should have dense phase along the whole tubing. Can you plot density vs. depth?
However, this is true for pure CO2: contaminants complicate the picture and shift dense phase conditions towards higher pressures. Which brings us to the point that CO2 equations of state (EoS) used in simulation software may not be too accurate.
Is PVT data necessary? Not if your CO2 stream is almost pure. But you need to ensure that the right EoS and transport properties (viscosity and thermal conductivity) are used in your models.

Best regards,

Good day all,

We are designing well completion for the CCUS project which is the first of its kind in the country/ company. Recommendations are appreciated on the areas which need to be addressed. A few questions are:

Can well be completed with Carbon Steel, in case there is no moisture (dehydrated gas)
How vital is PVT data, although it is, if not available what can be done

The wellbore hydraulic model was created and a significant increase was noticed in the gas rate with a 100 psi increase in the injection pressure. What could be the possible reason? Phase changes??

Tubing Size                    Injection Pressure (Psi)                             Injection Rate (MMscfd)
    3-1/2"                                     1400                                                                   4
    3-1/2"                                     1500                                                                   12
    3-1/2"                                     1600                                                                   19

What other considerations are important for designing the well completion for CCUS.

Regards,

Good day all,

We are designing well completion for the CCUS project which is the first of its kind in the country/ company. Recommendations are appreciated on the areas which need to be addressed. A few questions are:

Can well be completed with Carbon Steel, in case there is no moisture (dehydrated gas)
How vital is PVT data, although it is, if not available what can be done

The wellbore hydraulic model was created and a significant increase was noticed in the gas rate with a 100 psi increase in the injection pressure. What could be the possible reason? Phase changes??

Tubing Size                    Injection Pressure (Psi)                             Injection Rate (MMscfd)
    3-1/2"                                     1400                                                                   4
    3-1/2"                                     1500                                                                   12
    3-1/2"                                     1600                                                                   19

What other considerations are important for designing the well completion for CCUS.

Regards,

Hi Sahir - Every CCS campaign is different based on composition of captured CO2, type of reservoir, conditioning of CO2 prior to injection, costs involved, permitting and well classification regulations of the territory and corrossion prediction due to impurities and batch injection scenarios. Phase change and Joule thomson effect is being considered. 
I would highly recommend having a consultant onboard. Let me know if you need help. Meeting them next week in University of Houston at CCUS-2023. 

Good day all,

We are designing well completion for the CCUS project which is the first of its kind in the country/ company. Recommendations are appreciated on the areas which need to be addressed. A few questions are:

Can well be completed with Carbon Steel, in case there is no moisture (dehydrated gas)
How vital is PVT data, although it is, if not available what can be done

The wellbore hydraulic model was created and a significant increase was noticed in the gas rate with a 100 psi increase in the injection pressure. What could be the possible reason? Phase changes??

Tubing Size                    Injection Pressure (Psi)                             Injection Rate (MMscfd)
    3-1/2"                                     1400                                                                   4
    3-1/2"                                     1500                                                                   12
    3-1/2"                                     1600                                                                   19

What other considerations are important for designing the well completion for CCUS.

Regards,

Oumer - You are correct, every CCS campaign is different. I will also be attending the University of Houston CCUS-2023 and would be good to touch base. As part of our Harbour Energy CCS development started in 2021 we have incorporated a CO2 EOS that can handle impurities for CCUS applications into our transient thermal tubular stress analysis model (PERIFOR)

Hi Sahir - Every CCS campaign is different based on composition of captured CO2, type of reservoir, conditioning of CO2 prior to injection, costs involved, permitting and well classification regulations of the territory and corrossion prediction due to impurities and batch injection scenarios. Phase change and Joule thomson effect is being considered. 
I would highly recommend having a consultant onboard. Let me know if you need help. Meeting them next week in University of Houston at CCUS-2023. 

Good day all,

We are designing well completion for the CCUS project which is the first of its kind in the country/ company. Recommendations are appreciated on the areas which need to be addressed. A few questions are:

Can well be completed with Carbon Steel, in case there is no moisture (dehydrated gas)
How vital is PVT data, although it is, if not available what can be done

The wellbore hydraulic model was created and a significant increase was noticed in the gas rate with a 100 psi increase in the injection pressure. What could be the possible reason? Phase changes??

Tubing Size                    Injection Pressure (Psi)                             Injection Rate (MMscfd)
    3-1/2"                                     1400                                                                   4
    3-1/2"                                     1500                                                                   12
    3-1/2"                                     1600                                                                   19

What other considerations are important for designing the well completion for CCUS.

Regards,

Oumer - You are correct, every CCS campaign is different. I will also be attending the University of Houston CCUS-2023 and would be good to touch base. As part of our Harbour Energy CCS development started in 2021 we have incorporated a CO2 EOS that can handle impurities for CCUS applications into our transient thermal tubular stress analysis model (PERIFOR)

Hi Sahir - Every CCS campaign is different based on composition of captured CO2, type of reservoir, conditioning of CO2 prior to injection, costs involved, permitting and well classification regulations of the territory and corrossion prediction due to impurities and batch injection scenarios. Phase change and Joule thomson effect is being considered. 
I would highly recommend having a consultant onboard. Let me know if you need help. Meeting them next week in University of Houston at CCUS-2023. 

Good day all,

We are designing well completion for the CCUS project which is the first of its kind in the country/ company. Recommendations are appreciated on the areas which need to be addressed. A few questions are:

Can well be completed with Carbon Steel, in case there is no moisture (dehydrated gas)
How vital is PVT data, although it is, if not available what can be done

The wellbore hydraulic model was created and a significant increase was noticed in the gas rate with a 100 psi increase in the injection pressure. What could be the possible reason? Phase changes??

Tubing Size                    Injection Pressure (Psi)                             Injection Rate (MMscfd)
    3-1/2"                                     1400                                                                   4
    3-1/2"                                     1500                                                                   12
    3-1/2"                                     1600                                                                   19

What other considerations are important for designing the well completion for CCUS.

Regards,

Hi Sahir - Every CCS campaign is different based on composition of captured CO2, type of reservoir, conditioning of CO2 prior to injection, costs involved, permitting and well classification regulations of the territory and corrossion prediction due to impurities and batch injection scenarios. Phase change and Joule thomson effect is being considered. 
I would highly recommend having a consultant onboard. Let me know if you need help. Meeting them next week in University of Houston at CCUS-2023. 

Good day all,

We are designing well completion for the CCUS project which is the first of its kind in the country/ company. Recommendations are appreciated on the areas which need to be addressed. A few questions are:

Can well be completed with Carbon Steel, in case there is no moisture (dehydrated gas)
How vital is PVT data, although it is, if not available what can be done

The wellbore hydraulic model was created and a significant increase was noticed in the gas rate with a 100 psi increase in the injection pressure. What could be the possible reason? Phase changes??

Tubing Size                    Injection Pressure (Psi)                             Injection Rate (MMscfd)
    3-1/2"                                     1400                                                                   4
    3-1/2"                                     1500                                                                   12
    3-1/2"                                     1600                                                                   19

What other considerations are important for designing the well completion for CCUS.

Regards,

Good day all,

We are designing well completion for the CCUS project which is the first of its kind in the country/ company. Recommendations are appreciated on the areas which need to be addressed. A few questions are:

Can well be completed with Carbon Steel, in case there is no moisture (dehydrated gas)
How vital is PVT data, although it is, if not available what can be done

The wellbore hydraulic model was created and a significant increase was noticed in the gas rate with a 100 psi increase in the injection pressure. What could be the possible reason? Phase changes??

Tubing Size                    Injection Pressure (Psi)                             Injection Rate (MMscfd)
    3-1/2"                                     1400                                                                   4
    3-1/2"                                     1500                                                                   12
    3-1/2"                                     1600                                                                   19

What other considerations are important for designing the well completion for CCUS.

Regards,

At the wellhead injection pressures you referenced there could be significant changes in CO2 density at temperatures above 25 deg C

Good day all,

We are designing well completion for the CCUS project which is the first of its kind in the country/ company. Recommendations are appreciated on the areas which need to be addressed. A few questions are:

Can well be completed with Carbon Steel, in case there is no moisture (dehydrated gas)
How vital is PVT data, although it is, if not available what can be done

The wellbore hydraulic model was created and a significant increase was noticed in the gas rate with a 100 psi increase in the injection pressure. What could be the possible reason? Phase changes??

Tubing Size                    Injection Pressure (Psi)                             Injection Rate (MMscfd)
    3-1/2"                                     1400                                                                   4
    3-1/2"                                     1500                                                                   12
    3-1/2"                                     1600                                                                   19

What other considerations are important for designing the well completion for CCUS.

Regards,