Hammerhead FID: Guyana's Seventh Offshore Development in the Official Record

Introduction

ExxonMobil has announced a final investment decision (FID) for the Hammerhead development offshore Guyana, marking the seventh project on the prolific Stabroek block. The announcement, made on September 22, 2025, confirms that the project has received the required regulatory approvals and is expected to come online in 2029. With a planned capacity of approximately 150,000 barrels of oil per day (bopd) and an investment of US$6.8 billion, Hammerhead will further solidify Guyana's position as a major offshore oil producer.

For EPC contractors, procurement managers, and piping suppliers, this FID signals a new wave of demand for high-quality piping components, including prefabricated piping systems and pipe supports. This article provides a factual overview of the Hammerhead project based on the official release, along with practical guidance for suppliers looking to position themselves for upcoming opportunities.

Project Overview

Hammerhead is the seventh development on the Stabroek block, following the successful startups of Liza Destiny, Liza Unity, Prosperity, and ONE GUYANA FPSOs, with Uaru and Whiptail under construction. The project will utilize a floating production storage and offloading (FPSO) vessel with a capacity of approximately 150,000 bopd. The total installed capacity on the block will reach 1.5 million bopd once Hammerhead comes online.

The US$6.8 billion investment will fund the development, including 18 production and injection wells. This brings the total committed funds for the seven approved projects to more than US$60 billion. ExxonMobil Guyana Limited operates the block with a 45% interest, while Hess Guyana Exploration Ltd. holds 30% and CNOOC Petroleum Guyana Limited holds 25%.

Production Timeline and Context

ExxonMobil is currently producing approximately 650,000 bopd from the Stabroek block. With the recent startup of the ONE GUYANA FPSO, the company anticipates production to exceed 900,000 bopd by the end of 2025. The Uaru project is expected to start production in 2026, followed by Whiptail in 2027, and Hammerhead in 2029.

This rapid development pace—seven projects in just over a decade since the first discovery—underscores the scale and urgency of procurement needs. Suppliers should note that while Hammerhead is still several years from startup, early engagement in the supply chain is critical for long-lead items.

Procurement Implications for Piping Suppliers

For companies supplying piping components, the Hammerhead FID presents both opportunities and challenges. The project will require extensive topside and subsea piping systems, including prefabricated piping and pipe supports. However, specific component demand and supplier participation have not been disclosed in the official release. Suppliers must verify requirements directly with the operator or its EPC contractors.

Key Considerations for RFQs

When preparing RFQs for projects like Hammerhead, suppliers should focus on the following:

• Standards Compliance: Ensure all products meet relevant international standards such as ASME, ASTM, and API. For offshore applications, additional requirements like NACE MR0175 for sour service may apply.
• Material Traceability: Full traceability from mill to finished product is essential. Be prepared to provide Material Test Certificates (MTCs) per EN 10204 3.1 or 3.2.
• Quality Assurance: Implement robust QA/QC procedures, including third-party inspection if required. Common NDT methods include radiography, ultrasonic testing, and dye penetrant testing.
• Lead Times: Offshore projects often have tight schedules. Provide realistic lead times and consider buffer for potential delays.
• Local Content: ExxonMobil has emphasized spending with Guyanese suppliers. While not mandatory for international suppliers, partnering with local entities may be advantageous.

Inspection and Documentation

Buyers should verify that suppliers have the capability to provide the necessary documentation, including:

• Mill Test Certificates (MTCs) with chemical and mechanical properties.
• Heat treatment charts and hardness test reports.
• Dimensional inspection reports.
• Pressure test certificates if applicable.
• Coating and surface preparation records.

Common Risks and Mitigation

• Specification Gaps: Ensure that all technical specifications are clearly defined in the RFQ to avoid mismatches. Work with engineering teams to confirm exact requirements.
• Supply Chain Disruptions: Global supply chains can be volatile. Consider dual sourcing for critical items and maintain safety stock.
• Quality Failures: Non-conforming materials can cause costly delays. Implement rigorous incoming inspection and consider third-party audits of supplier facilities.
• Regulatory Changes: Stay informed about local content requirements and import regulations in Guyana. Changes could affect delivery schedules.

Related Capabilities

For piping components, consider suppliers that offer comprehensive solutions. For example, prefabricated piping and installation services can reduce on-site labor and accelerate project timelines. Similarly, pipe supports and hangers are critical for ensuring the integrity of piping systems under dynamic offshore conditions.

Conclusion

The Hammerhead FID is a significant milestone for Guyana's offshore industry. While specific procurement details are not yet public, suppliers should prepare by aligning their capabilities with industry standards and being ready to respond to RFQs from EPC contractors. By focusing on quality, compliance, and reliable delivery, suppliers can position themselves to participate in this major development.

Sources

• https://corporate.exxonmobil.com/news/news-releases/2025/0922_exxonmobil-guyana-expands-capacity-with-seventh-offshore-development
• https://corporate.exxonmobil.com/locations/guyana/operations/guyana-project-overview