The use of supercritical CO2 in deep geothermal reservoirs as a working fluid: Insights from coupled THMC modeling

Injection of a CO2-reactive solution for wellbore annulus leakage remediation

Driven by concerns for safe storage of CO2, substantial effort has been directed on wellbore integrity simulations over the last decade. Since large scale demonstrations of CO2 storage are planned for the near-future, numerical tools predicting wellbore integrity at field scale are essential to capture the processes of potential leakage and...

Microstructures of Early Jurassic (Toarcian) shales of Northern Europe

The Toarcian (Early Jurassic) Posidonia Shale Formation is a possible unconventional gas source in Northern Europe and occurs within the Cleveland Basin (United Kingdom), the Anglo-Paris Basin (France), the Lower Saxony Basin and the Southwest Germany Basin (Germany), and the Roer Valley Graben, the West Netherlands Basin, Broad Fourteens Basin,...

Observed CO2-induced reactivity in werkendam gas field, the Dutch storage analogue

Natural CO2 fields provide important insights in the long-term geochemical behaviour of CO2 in a reservoir and the potential of permanent trapping in carbonate minerals. The Werkendam gas field in The Netherlands, discovered during gas exploration activities in 1991, contains >70% CO2. Core samples were selected from the Werkendam natural...

ULTimateCO2 project: Field experiment in an underground rock laboratory to study the well integrity in the context of CO2 geological storage

Wells drilled through low-permeable caprock are potential connections between the CO2 storage reservoir and overlying sensitive targets like aquifers and targets located at the surface. The wellbore integrity can be compromised due to in situ operations, including drilling, completion, operations and abandonment or to geochemical degradation of...