Tech Paper

Pushing Boundaries with Zero Flaring Solutions Utilizing the Multiphase Pump to Unlock Constrained Production in a High H2S Offshore Field

Published: 02/25/2026

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We often think of flow assurance as subsurface or downhole-related issues. Still, in many cases, the main challenge is the topside: the back pressure of the production line or sea line imposed by the surface facility, or the design operating pressure that highly limits what the well can deliver. To work around this, ADNOC Offshore, in collaboration with its business partner, trialed a Multiphase Pump (MPP) to reduce the wellhead pressure and stabilize the flow below the existing back pressure. Several challenges were addressed during the planning phase, including the selection of pilot wells, pump specifications, job modeling, surface footprint, and integration with the existing facility. Finally, over several days, the well was tested at different flow rates, with WHPs as low as 269 psig, while maintaining full online operation against the 675.9 psi production line pressure. The production increase was immediate and sustained: oil rates went from 1,477 to over 2,300 BOPD, and gas rates more than doubled. Managed to achieve the highest production figures from existing inactive wells without subsurface interventions while increasing production to meet the field target, while maintaining zero flaring during the entire operation. This success wasn't just about flow rates. It opened the door to bringing marginal and low-pressure wells online through existing facilities—wells that would otherwise likely have been written off. With minimal modification to infrastructure, the MPP permitted to break through a surface bottleneck that's all too common in mature offshore assets. In high H2S offshore environments, particularly for marginal or constrained wells, managing the issue is exceptionally challenging due to the limited availability of injection lines. Traditional strategies often require flaring during cleanup or stimulation, which contradicts sustainability goals and regulatory standards. The future of the energy transition lies in innovation and decarbonization. This paper addresses this issue by presenting a zero-flaring approach using Multiphase Pumping technology, which holds promise for extending well life and reducing environmental impact.

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