A New Approach to future FLNG for Offshore Gas Monetization

Abstract

Abstract A new approach to future FLNG is presented which will significantly reduce the overall CAPEX, EPCIC schedule, and OPEX compared to past conventional bespoke FLNG designs and project execution methods. Using a standardized design approach on both FLNG topside and Hull, this new FLNG concept will provide standardized design of liquefaction and process modules with flexible and standardized hull forms and cargo containment systems. This FLNG concept can be deployed around world near shore or offshore with Jetty or Single Point Mooring, such as SSY or an External Turret. The standardization approach enables reduction in the EPCIC cost and schedule so that it becomes a more attractive solution for Gas Monetization. The paper will describe: ➢ Topside Modularization is based on functionality and Standardized design for easy integration and assembly for various sizes of production capacity and pre-process requirements. ➢ Environmentally friendly approach using highly efficient SMR technology employing aero-derivative gas turbine utilizing waste heat recovery to lower the carbon dioxide footprint. ➢ Patented turbo-expander based NGL recovery process and feed gas booster can provide flexibility in a range of deployment scenarios with standardized design of refrigeration and liquefaction modules. ➢ Embedded Advanced Control (WACTM) with ICSS can significantly reduce the number of operators on board and ultimately achieve unmanned operation. ➢ Proven robust SPB cargo containment system with standardized tank design provides storage for both LNG and LPG that fits standardized hull dimensions. ➢ EPCIC project execution by a single contractor on topside, hull, construction, integration, pre-commissioning, and gas trials to reduce interface, save cost and shorten schedule ➢ Completion of gas trials at LNG terminal before transportation to reduce the cost and risk of onsite commissioning issues. This new FLNG concept can be applied to a capacity range from 1 MTPA to 4 MTPA with different combination of standardized functional plug-in modules. It can be optimized to accommodate feed gas range from associated to non-associated gas streams, and can be deployed either offshore or near-shore with a standardized hull design adapted for different mooring systems. This new FLNG concept can greatly reduce the risks with project execution and overall schedule, thus providing an ideal solution for Offshore Gas Monetization.