Guyana’s capping stack is a critical offshore oil spill response asset designed to rapidly contain a subsea well blowout, strengthening the country’s emergency preparedness as oil production expands.
What is a Capping Stack?
- A specialized subsea device used to seal a blown-out well.
- Installed on top of a damaged wellhead to stop or control the flow of hydrocarbons.
- Developed as a key industry safeguard following the Deepwater Horizon/Macondo incident.
Why it matters to Guyana
- Required under environmental permitting for offshore developments, including Yellowtail.
- Places Guyana among a small group of countries globally with this technology accessible from its own shores.
- Significantly reduces response time in the event of a well control incident.
- Strengthens both national and regional oil spill response capacity.
Location and Access
- Stored at the Vreed-en-Hoop Shorebase Inc. (VEHSI) on the West Bank Demerara.
- Provides in-country access, eliminating reliance on overseas deployment.
- Accessible for rapid offshore mobilization when needed.
Ownership and Use
- Owned and managed by Oil Spill Response Limited (OSRL).
- Accessible to ExxonMobil Guyana Limited through OSRL membership.
- Forms part of a global network of emergency response equipment.
Function
- Deployed in the event of a loss of well control.
- Installed over the well if the blowout preventer fails.
- Can:
- Fully shut in the well, or
- Enable controlled flow and containment.
- Designed for rapid deployment within days, not weeks.
