Abstract:
As Gulf of Thailand assets mature, operators face a shared industry challenge: declining production, aging infrastructure, rising operating costs, and mounting decommissioning liabilities. Yet natural gas remains essential to affordable, reliable energy and national energy security. The question is how to keep mature assets competitive and economically justified while continuing to provide energy security to the country.
Circular Engineering answers that question by closing the loop on the facilities lifecycle. Instead of following the traditional linear path of wellhead platform design, operation, and decommissioning, the wellhead platform is engineered to be reused, refurbished, and redeployed. Decommissioning becomes a source of supply rather than a cost at the end of asset life, feeding standardized platforms, equipment, and materials back into the portfolio.
Five principles drive the model. Design for reuse standardizes wellhead platform and equipment configurations so that retired facilities become interchangeable assets rather than scrap. Operating optimization applies proactive integrity management and O&M footprint reduction, guided by a strategic depletion plan. Strategic production planning integrates depletion planning directly into the asset development plan, so that retirement timing, reuse candidates, and future demand are matched years in advance. Strategic storage and refurbishment yards provide the capability to store, inspect, and refurbish recovered facilities for future redeployment. An installation and removal factory model delivers efficient, repeatable execution planning, turning reuse from an opportunistic exception into a reliable supply chain.
The results are tangible: lower capital cost for new developments, reduced decommissioning liability, less waste, and a materially stronger economic case for continued investment in mature fields. Circular Engineering is not a sustainability add-on. It is a competitiveness strategy, and one that is scalable across the Gulf of Thailand and other mature basins facing the same lifecycle economics.
Biography:
Pannawat Nilkitsaranont brings over 29 years of experience with Chevron Thailand, holding leadership roles across operations and engineering, including international assignments in Angola and Vietnam. His expertise spans maintenance, process safety, operations support, and project engineering. He currently leads Chevron Thailand's Facilities Engineering function, overseeing project management, construction, and technical engineering disciplines, while driving the safe and efficient execution of the company's infrastructure installation and decommissioning strategy.
