What is the significance of the Khan Tervel Field?

The Khan Tervel Field is an offshore block located in Bulgaria's Black Sea EEZ. While specific prospectivity details are proprietary, its selection for a partnership between TPAO and Shell suggests it holds significant exploration potential for oil and gas.

How does this partnership benefit TPAO?

This collaboration allows TPAO to expand its operational footprint beyond Turkish waters, establishing itself as an international exploration player. It provides an opportunity to apply its growing Black Sea expertise in a new jurisdiction and share the financial and technical risks with a global supermajor like Shell.

What is Shell's strategic interest in the Bulgarian Black Sea?

Shell's involvement indicates a strategic interest in diversifying its global exploration portfolio and potentially securing new hydrocarbon resources in a region with emerging prospectivity. Partnering with TPAO, which has recent Black Sea success, could offer a lower-risk entry point into a potentially significant new gas province for the European market.

Offshore Engineer · February 18, 2026 (Feb 18) · 1 min read

Turkey’s TPAO, Shell Partner for Offshore Exploration in Bulgaria

Shell plc

Isometric technical illustration of offshore oil and gas operations with drillship and support vessel — Illustration: Shell plc

Analysis

AI-assisted analysis · reviewed by Yuri Kan

This collaboration between Turkey's national oil company, TPAO, and energy major Shell for offshore exploration in Bulgaria's Black Sea marks a notable expansion of TPAO's international footprint. It signals Shell's renewed interest in the promising Black Sea basin, potentially accelerating the development of new hydrocarbon resources in the region. The partnership leverages TPAO's growing Black Sea expertise with Shell's deepwater capabilities, aiming to unlock the potential of the Khan Tervel block.

Key Facts

Turkish Petroleum (TPAO) and Shell have formalized a partnership agreement.
The collaboration focuses on conducting oil and gas exploration activities.
Exploration efforts will target the Khan Tervel Field.
The Khan Tervel Field is situated within Bulgaria's exclusive economic zone (EEZ).
The partnership aims to explore for new hydrocarbon reserves in the Bulgarian Black Sea.

Background & Context

The Black Sea has garnered increasing attention as a potential hydrocarbon province, particularly following significant gas discoveries in Turkish waters by TPAO, such as the Sakarya field. Bulgaria, aiming to enhance its energy security and reduce reliance on external sources, has been encouraging offshore exploration for years. Shell has a history of involvement in various global exploration frontiers, and this move could reflect a strategic re-evaluation of the Black Sea's prospectivity.

Market Impact

This partnership could significantly de-risk exploration in the Bulgarian Black Sea, attracting further investment into the region. For TPAO, it represents a strategic step in becoming a more prominent international player, leveraging its recent Black Sea successes beyond Turkish borders. Shell's involvement brings substantial technical expertise and financial muscle, potentially accelerating the timeline for any future discoveries and development. It also underscores the growing interest in the Black Sea as a key area for European energy diversification.

What to Watch

The immediate next steps will likely involve detailed seismic data interpretation and potentially the planning of an initial exploration drilling campaign in the Khan Tervel block. Success in this venture could spur further exploration licensing rounds in Bulgaria and neighboring Black Sea countries. The industry will be closely watching for updates on seismic surveys and any announcements regarding drilling intentions and timelines.

Frequently Asked Questions

What is the significance of the Khan Tervel Field?: The Khan Tervel Field is an offshore block located in Bulgaria's Black Sea EEZ. While specific prospectivity details are proprietary, its selection for a partnership between TPAO and Shell suggests it holds significant exploration potential for oil and gas.
How does this partnership benefit TPAO?: This collaboration allows TPAO to expand its operational footprint beyond Turkish waters, establishing itself as an international exploration player. It provides an opportunity to apply its growing Black Sea expertise in a new jurisdiction and share the financial and technical risks with a global supermajor like Shell.
What is Shell's strategic interest in the Bulgarian Black Sea?: Shell's involvement indicates a strategic interest in diversifying its global exploration portfolio and potentially securing new hydrocarbon resources in a region with emerging prospectivity. Partnering with TPAO, which has recent Black Sea success, could offer a lower-risk entry point into a potentially significant new gas province for the European market.

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