SPWLA-SAC CCUS Workshop

CO2 storage capacity in saline aquifers depends on:

• reservoir volume, porosity, CO2 density and storage efficiency

• reservoir volume, porosity, CO2 density and CO2 wettability

• reservoir volume, porosity, CO2 phase behavior and storage efficiency

• reservoir volume, oil saturation, CO2 density and storage efficiency

CO2 solubility trapping provides additional storage security compared with structural and stratigraphic trapping

• True

• False

CO2 solubility in water aquifers depends on (select all that apply):

• Migration length in the reservoir

• Displacement efficiency

• Water salinity

• Pressure and temperature

• Presence of other ions

The main three considerations for geoscientists working on CCUS projects are:

• Storage capacity, containment, injectivity

• Storage capacity, wettability, injectivity

• Storage capacity, residual saturation, wettability

• Permeability, fracture width, fault extent

Which components are part of the SPE Storage Resources Management System? (select all that applies)

• Provides a model for managing storage resources – focus on quantities that potentially can be used for commercial storage.

• Assesses both the range of uncertainty on volumes and the chance of commerciality (project maturity)

• Provides standard definitions and estimation methodology for petroleum resources.

Well integrity in legacy oil and gas wells constitute a major risk in CCUS projects.

• True

• False

One of the regulatory bodies' main concern with CCUS projects is avoiding the contamination of shallow drinking water aquifers by leaking CO2.

• True

• False

Microseismic monitoring from CO2 observer wells can be achieved by (select all that applies):

• Optic fiber monitoring

• Geophone monitoring

• Temperature monitoring

What factors contribute most to residual CO2 gas trapping (select all that applies):

• Pore size

• Permeability

• Wettability