Well Modelling Independent Review
Location
UK North Sea
Project Type
New Carbon Store
Type of Store
Depleted Gas Field
Standards and Frameworks
OEUK Well Guidelines
Client
Multinational Energy Company
Review client's modelling work and verify if they correctly predicted the worst-case scenario.
The client had undertaken Prosper modelling to ascertain the amount of CO2 that can be injected into the target reservoirs before cross flow and leak to seabed occurs. This is based on modelling the pressure at which these different events may occur at in the medium risk wells.
Client Need:
A client had requested to review its scenario analysis modelling for their CO2 storage site and provide updates if needed.
Description of services provided by ERCE staff:
ERCE’s audited the two possible cases of crossflow and leakage. In case of checking crossflow, the following sensitivities were run CO2 impurity level; reservoir recharge pressure; and fluid column density. The worst-case migration rate and the minimum pressure required to allow crossflow were calculated. With the minimum pressure known, the maximum volume of CO2 that could be leaked was determined from the reservoir dynamic model.
Outcome:
The report detailing work process and conclusions on possible scenario analysis in the field submitted.