Drilling an offshore well is a costly operation. Limited amount of existing subsurface data can lead to delays and incidents during drilling. In extreme situations, even the integrity of the caprock covering the hydrocarbon reservoir can be challenged.
In DrillWatch projects, OCTIO deploys a seismic cable on the seabed as a part of the rig preparations. Data is then acquired and analyzed real-time, by using OCTIO's Guardian package .
The applications of this real-time, passive seismic monitoring technology are:
- Geosteering of the drill bit with two meters absolute accuracy, for safety and enhanced production rates
- Location of the drill bit in units of seismic time
- Monitoring of fractures caused by loss of drilling fluid, cement integrity, XLOT and injection test
- Look-ahead seismic using the drill bit as a source, for imaging in real time horizons and geological bodies around the drill bit
- Ensure caprock integrity