Amarinth designs bespoke low NPSH pumping solution for Nigeria’s NLNG delivery pipeline
FOR IMMEDIATE RELEASE – 3rd June 2026
Amarinth is developing four bespoke drain disposal pumps for the NLNG crude delivery pipeline at the Gbetiokun Field, further expanding its footprint in the African energy sector. As a world-class, net-zero manufacturer, Amarinth specialises in centrifugal pumps and equipment designed to reduce long-term operating costs through high-performance engineering. Its versatile solutions support a broad spectrum of industries globally, spanning onshore and offshore oil and gas, renewable and nuclear energy, defence, desalination, and the process and industrial markets.
The Gbetiokun Field, located within the Niger Delta's OML 40 license area, is a vital oil and gas asset. As part of an infrastructure expansion to scale up its contribution to the national delivery network, four drain disposal pumps were required for an onshore facility along the NLNG crude delivery pipeline.
However, the project hit a major technical roadblock when the pumps had to empty a tank located beneath them. This configuration created an exceptionally low Net Positive Suction Head (NPSH) which, if not addressed, would cause pump cavitation and risk severe equipment damage. Several pump manufacturers were initially consulted, but none could deliver a viable solution for these extreme operating conditions. Recognising the need for a specialist skills, the project engineers ultimately turned to Amarinth.
Leveraging its extensive expertise in designing pumps for very low NPSH environments, Amarinth worked closely with the pipeline engineers to develop a bespoke solution. The resulting system eliminates the need for a priming chamber by integrating an API 610 pump with a specialised, upstream vacuum unit to generate the necessary suction, ensuring reliable operation without a traditional suction head. The system includes:
Venturi Effect Ejector: The primary unit will utilise an ejector to create a vacuum in the pipework, lifting the process fluid to the pump. By exploiting the venturi effect, the design has very few moving parts, minimising failure points and ensuring the system is ATEX compliant for hazardous areas.
Automated Fluid Management: Managed by an automated control system, the unit will expel air from the pipework to lift fluid to the pump level. Once the centrifugal pump is fully primed, it will be automatically switched on and the primary unit switched off.
Modular and Flexible Design: The self-priming units will be fully modular. The material of the priming unit is specified to match the pipework and pump, and key components selected to suit the customer-specific Approved Vendor List (AVL).
This innovative approach provides a commercially viable solution to a predicament that had previously stalled the project's progress.
Oliver Brigginshaw, Managing Director of Amarinth, commented: “We are delighted to have partnered on this challenging project for the NLNG pipeline. Our ability to engineer bespoke solutions where others cannot is a testament to our technical agility and deep understanding of fluid dynamics. This project further underlines our commitment to supporting the Nigerian oil and gas industry with reliable, high-performance pumping technology."
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Amarinth is a carbon net zero organisation delivering world-leading expertise in the design, application and manufacture of centrifugal pumps and associated equipment for critical applications in many of the most arduous and hostile environments around the globe.
Founded in 2002, Amarinth has harnessed the skills, creativity and passion of people who have worked in the pump industry for decades, delivering bespoke API and ISO pumps primarily to the offshore and onshore oil & gas industries; nuclear and renewable energy generation; defence; desalination; process and industrial markets.
The company’s innovative approach, business agility and use of sophisticated computer applications enables it to deliver robust, reliable and sustainable pumping solutions on the shortest lead times in the industry.
• Process pumps – API 610, API 685, ISO 5199 horizontal, vertical and in-line bespoke process pumps, including ones that are hydraulically and dimensionally interchangeable with the former Girdlestone and other obsolete pumps.
• Skid packages and modules – Supplied with a variety of drives for applications including de-sanding, mixing, filtration and chemical injection and tailored for the oil & gas, water treatment and power generation industries.
• Condensate recovery – Cutting-edge design providing low NPSH up to 98°C with variable speed drives to reduce cycle time and lower operating costs, available in stainless steel, galvanised or copper tanks for light or heavy industrial uses.
• Seal support – Integrated pressurised and vented seal support systems designed and delivered to API 682 and ISO 5199 standards and specific site specifications and requirements, working closely with AES, Eagle Burgmann, John Crane and Protect System.
• Spare parts – Critical spares for all Amarinth pumps and related components can be dispatched the same day, reducing potential downtime, and in addition components for the former Girdlestone and other obsolete pumps can be re-engineered often improving the performance of existing assets.
• Services – A full range of pump related services, delivered from UK head office or on-site globally, onshore or off-shore, including full commissioning and start-up support; also strip, report and refurbishment of any pump regardless of manufacturer.
Amarinth operates globally from its base in Rendlesham Suffolk, United Kingdom and offices in the Middle East and Malaysia with a global customer base, including BP, Shell, ADNOC, NOV, ExxonMobil, Schlumberger, COSCO, EDF, GlaxoSmithKline, Saudi Aramco, Pfizer, Diageo, Kuwait Oil Company, AMEC, Fluor, Halliburton, and Babcock.
For further information or photos contact
Comment:
Alex Brigginshaw
Commercial Director
Amarinth Limited
Bentwaters Park, Rendlesham
Woodbridge IP12 2TW
United Kingdom
Tel: +44 (0)1394 462131
Mobile: +44 (0)7703 681821
Alex.Brigginshaw@Amarinth.com
Media Relations:
Phil Harland
B6 Solutions Limited
29 Swan Drive
The Wharf, Aldermaston
Reading RG7 4UZ
United Kingdom
Tel: +44 (0)118 971 3271
Mobile: +44 (0)7880 748380
Phil.Harland@B6solutions.com
