By Marcel Chin-A-Lien – Petroleum & Energy Advisor – 17th June 2025

1. Introduction

On June 17, 2025, Staatsolie formally signed a new Production Sharing Contract (PSC) for Offshore Block 66 with Petronas and Paradise Oil.

This landmark moment reopens a sector of Suriname’s offshore area that has a rich and instructive history, rooted in past exploration campaigns and freshened by recent technological promise.

This essay systematically tracks the block’s history, the discoveries and disappointments that shaped it, and the rationale, that I assume… behind this renewed venture.

2. License and Block History Explained

The area now known as Block 66 was formerly part of the wider Block 53, operated by Apache (later APA Corporation) in partnership with CEPSA and Petronas. The block underwent several critical exploration campaigns between 2015 and 2020:

• Baja-1 (Discovery, 2020): Encountered light oil in Campanian-aged sands.
• Kolibri-1 (Dry, 2021): No commercial hydrocarbons; likely due to reservoir or charge issues.
• Popokai-1 (Dry, 2022): Poor reservoir development suspected.
• Rasper-1 (Dry, 2022): Charge failure or migration pathway blockage theorized.

After these results, Apache relinquished the northern and eastern portions of Block 53 (now reopened as Block 66), while retaining the southwestern corner containing Baja-1.

The relinquishment likely occurred in late 2023.

Petronas, after conducting a major 3-month seismic campaign in 2024–2025, has now taken the lead in this newly defined area, apparently now confident of improved prospectivity underpinned by new subsurface imaging and data interpretation.

3. Geological and Technical Analysis of the 3 Dry Holes

Well Name	Result	Possible Reason for Failure
Kolibri-1 (Kol-1)	Dry	Poor reservoir quality or insufficient charge migration from deeper source rocks
Popokai-1 (Pop-1)	Dry	Low net-to-gross sand development, potential stratigraphic trap failure
Rasper-1 (Ras-1)	Dry	Charge risk confirmed, possibly blocked migration routes, source kitchen not mature enough here

4. Why Petronas and Paradise Oil Re-entered This Area

Several crucial factors may justify this new commitment:

• Improved Seismic Imaging: Petronas executed an extensive 3D seismic survey in 2024, likely clarifying stratigraphic pinch-outs and possible bypassed traps overlooked during Apache’s earlier campaigns. Please see a separate companion paper on this seismic survey.
• New Geological Models: Reinterpretation suggests potential for late Campanian and Maastrichtian turbidite systems, undrilled by previous wells.
• Proximity to Working Petroleum Systems: Nearby discoveries (e.g., Sapakara, Krabdagu) demonstrate effective charge and migration pathways west and southwest of Block 66.
• Strategic Positioning: For Staatsolie and Petronas, maintaining a foothold offshore Suriname remains geopolitically and commercially vital, with large frontier gas potential untested in this block. Specifically for Staatsolie (via “ son/daughter” Paradise Oil) it is a logical step forward, to slowly get more involved in offshore operations and responsibilities.

5. A Balanced Forward Look: Prospectivity & Risks

While Block 66’s exploration risk remains non-negligible (given the 75% historical dry hole rate), several developments improve the odds:

• High-resolution seismic has clarified potential structural closures and deep-turbidite plays missed earlier.
• Possibility of a new charge window at deeper Albian levels, which Apache’s wells did not target fully.
• Petronas’ cautious approach (likely to drill step-out or stratigraphic tests) reflects both technical prudence and confidence in new leads.

Risks still include potential charge failure and thin sand development, but the upside potential—particularly gas or deeper oil—remains commercially interesting, especially if linked to future FLNG concepts or regional tie-backs.

6. Block 66 Map and Well Overview

Illustration of Block 66’s boundary, prior Block 53 configuration, and well locations:, included under Chapter 2.

Note: Baja-1 retained in Block 53; Kolibri-1, Popokai-1, Rasper-1 drilled in now-Block 66.

7. Appendix: My reasoning – Behind This Essay

Why would seasoned operators return to a block marked by three dry wells?

This fundamental question guided this assessment, explored via thoughtful inquiry:

• Did prior wells truly test all plays? No; most targeted the same upper Campanian channel fairways. Deeper, richer Albian or Maastrichtian plays remain untested.
• Did seismic resolution limit Apache’s choices? Likely—new Petronas seismic reveals stratigraphic traps Apache could not resolve.
• Why is gas potential now valued? Regional discoveries (Krabdagu) proved gas charge system works offshore Suriname—missed by early oil-focused explorers.
• Does geopolitical and fiscal stability favor re-entry? Yes—Suriname’s new PSA terms and possible FLNG tax holidays sweeten frontier gas projects.

Thus, apparent “dry history” transforms into “frontier opportunity”—a rare window in modern offshore exploration.

Ave Fenix?
Block 66(ex-53).
No, no estaba muerto.
Estaba de parranda….
https://youtu.be/_iTEs-G7pB0?si=LRMPUBtSOoVfApQI

8. About the Author

Marcel Chin-A-Lien – Petroleum and Energy Advisor

48 Years of Global, in-depth expertise, knowhow and insights. That have generated transformative, multi-billion giant field discoveries, iconic first capitalistic new ventures in the USSR, bid rounds, added value and long-term cash flow generating offshore exploration and production activities on the Dutch North Sea, M&A, PSC designs, contract negotiations.

Combined with a cross & trans discipline background of 4 petroleum post-grad degrees that fuse technical, business, commercial and management disciplines, accompanied by fluency in 7 languages in a variety of geographical, socio-cultural and business landscapes.

“Exploration & Production integrated with Business & Commercial Development and Critical Insights”

Degrees & Certifications:
Drs – Petroleum Geology
Engineering Geologist – Petroleum Geology
Executive MBA International Business – Petroleum – M&A
MSc International Management – Petroleum
Energy Negotiator – Association of International Negotiators (AIEN)
Certified Petroleum Geologist #5201 – AAPG (Gold standard)
Chartered European Geologist #92 – EFG (Gold standard)
Cambridge Award “2000 Outstanding Scientists of the 20th Century”
Paris Awards “Innovative New Business Projects” – GDF-Suez, France

Public Profile: LinkedIn Profile
Email: marcelchinalien@gmail.com