You’re referring to **Project Greensand**, a pioneering carbon capture and storage (CCS) initiative in the Danish North Sea.
Here’s a “virtual visit” and an overview:
* **Location:** The project is centered around the **Nini West oil field**, located approximately 200 kilometers (125 miles) off the western coast of Denmark in the North Sea.
* **The Concept:** Project Greensand aims to demonstrate and ultimately scale up the permanent storage of CO2 in depleted sandstone reservoirs that previously held oil and gas. By using existing offshore infrastructure (wells, platforms), it seeks to make the process more efficient and cost-effective.
* **The Process:**
1. **Capture:** CO2 is captured from industrial emitters (initially, the project has a pilot involving CO2 from a Belgium-based INEOS facility).
2. **Transport:** The captured CO2 is liquified and transported by ship to the offshore platform in the North Sea.
3. **Injection:** From the platform, the CO2 is injected through existing wells into the deep geological formations (sandstone reservoirs, approximately 1,800 meters or 6,000 feet below the seabed) within the depleted Nini West field. These layers are capped by impermeable rock, ensuring the CO2 remains trapped.
* **Key Players:** The project is led by a consortium, primarily **INEOS Energy** and **Wintershall Dea**, with support from the Danish state and the EU.
* **Status & Ambition:**
* **Pilot Phase:** Project Greensand successfully completed its first full-chain CO2 injection and storage in March 2023, marking it as the first cross-border CO2 storage project of its kind.
* **Commercial Scale:** The ambition is to scale up to store 1.5 million tonnes of CO2 per year by 2025, potentially increasing to 8 million tonnes per year by 2030.
* **Significance:**
* It’s a crucial step for Denmark and Europe in developing large-scale CCS infrastructure, offering a viable solution for decarbonizing hard-to-abate industrial emissions.
* It leverages existing oil and gas infrastructure for a new, climate-friendly purpose.
* It establishes a commercial pathway for cross-border CO2 transport and storage, fostering cooperation between European nations on climate goals.
This initiative is a tangible example of how old fossil fuel infrastructure can be repurposed to address climate change by securely storing greenhouse gases.
