The patented ESSI Flow Access Module (FAM) is a universal production optimisation interface for both greenfield and brownfield applications. FAM consist of a range of interchangeable modules which attach to the FAM Hub.
The FAM hub is a dual port hub which is supplied either with new hardware of permanently retrofitted onto existing infrastructure and can be located at the PLEM, PLET or at the flowline termination either at the tree or manifold. The FAM modules are deployed using standard ESSI topside equipment at tolling.
The modules can be used individually, concurrently or in combinations and provide a range of production optimisation opportunities, including;
Enpro Subsea's patented ESSI system enables deep-water access to hydrocarbon flow at the pipeline or well and provides a cost effective field development strategy.
The ESSI control head is an ROV 'fly to place' solution which minimises deployment loads on to the receiving structure. It provides automated flow control and shut-off which further reduces deployment system complexity and footprint, enabling multi-well campaigns from a single vessel.
The ESSI sampling hub is configurable for both thru bore and chambered hydraulic sampling. The fluid sample is transferred into Enpro Subsea's patented extraction system under isobaric conditions and delivered to the surface independent of the ROV.ESSI provides accurate well data including:
It enables optimised production management and accurate multiphase meter re-calibration. The system can be deployed using standard ROV running tools and may be left in situ to take multiple samples over a defined period.
The ESSI hub is used to permanently retrofit a multiphase meter between the xmas tree and the production flowline. Individual meters for fiscal measurement or production optimisation and control can be located at the jumper, PLET or manifold.
The ESSI system is configurable for all types of multiphase meters and installed using standard running equipment and ROV tooling.
The additional permanent barriers within the ESSI hub enable meter replacement and recalibration from any vessel of opportunity.
The ESSI hub is used as an access port for the management of unplanned blockages. It enables the injection of chemicals (e.g. methanol) back into exiting subsea pipelines to treat hydrates or wax build ups.
Enpro Subsea supports all vendor configurations, manufactures and regions. This 'open standard' enables safe access to hydrocarbon flow, providing multiple production optimisation solutions throughout life of field.
The ESSI system is used for well control / well kill scenarios. In stimulation operations, the control head is configured to fail shut in the event of a hose break away or well over / under pressurisation. Chemical delivery flow rate and pressure is pre-set and adjusted from the ESSI control head.
The ESSI system enables hydrate remediation and high volume flushing at the pipeline.
The ESSI system is available at the xmas tree jumper, the PLET or at the manifold.
The ESSI hub is independent of subsea xmas tree or pipeline interface specification and requires no modification to the xmas tree and therefore enables 'fast track procurement; of associated hardware.
The patented ESSI system is comprised of industry proven pre-qualified, cost effective hardware. This enables rapid project delivery and operations.
Operator had a requirement to complete tieback within 12 months. In order to the minimise cost there was a preference to use stock equipment including a standard xmas tree. Production profile dictated need for enhanced production strategies, including:
At either end of the flowline, Enpro installed their modified goosenecks with integral FAM hubs. Additionally, we provided 3x enhanced production FAM modules, including: