Sandstone Geophysical Properties During CO2 Injection Experiments

Data from brine and CO2 flow-through experiments on three sandstones with varying porosity and clay content. Geophysical and transport properties were measured before, during, and after CO2 exposure in a high-pressure laboratory setup at the National Oceanography Centre, Southampton in 2022. The dataset was produced by the British Geological Survey as part of the OASIS, EHMPRES, and FOCUS projects.

Use Cases

• Modeling the relationship between CO2 saturation and ultrasonic wave velocities based on P- and S-wave measurements.
• Calibrating electrical resistivity models for brine saturation estimation in clay-bearing sandstones.
• Analyzing the impact of rock heterogeneities like porosity and clay fraction on geophysical monitoring data.
• Training predictive models for reservoir property changes under CO2 injection conditions.

Strengths

• Data was collected under controlled high-pressure conditions simulating a specific North Sea reservoir.
• Measurements include multiple geophysical properties (ultrasonic velocities, attenuation, strain, resistivity) across a range of CO2 saturations.
• Experiments were conducted on three distinct sandstone samples with documented mineralogical similarities but differing porosity and clay content.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect the specific experimental and geological biases inherent to the laboratory setup and chosen samples.

Provenance

Source

British Geological Survey (BGS), Rock Physics Laboratory at the National Oceanography Centre, Southampton.

Collection Method

Laboratory flow-through experiments on sandstone cores under high-pressure, room-temperature conditions.

Time Range

Experiments conducted during 2022.

Freshness

Last updated 2026-05-28 14:05:04.104090; freshness should be verified.

Geography

Samples were tested to simulate conditions of the Aurora CO2 storage reservoir in the northern North Sea.