The HA project comprises a 12-slot Well Head Platform (WHP), a Processing Platform (PP) and an accommodation platform (AP). The WHP and the accommodation platform are each bridged-linked via a 60-meter bridge to the processing platform. The capacity of the PP is 250MMscf/d, 30kbpd gross liquids (20kbopd peak oil plus condensate production and 10kbpd water). 

The PP has full separation and treatment, with stabilized oil and condensate exported via a 22 km 6” pipeline to a Soft Yoke Mooring Platform (SYMP) moored FSO located close to the HD location, and dry gas exported via a 20 km 16” pipeline to the existing OGGS “H” tie-in point, also close to HD. 

A circa 33 km water disposal line will be used to dispose of treated produced water to the 200ft discharge zone in compliance with the EGASPIN 2018 requirements. The FSO will be, as far as possible, industry standard with storage capacity of 1,000,000 bbl (SuezMax type).

A schematic of the concept is given in Figure 30-1 below:

Figure 30-1 HA Development Concept Schematic

The Process Concept comprises of 3 feed and product streams – Feed – High pressure, Medium pressure and Low pressure Well fluids and Products – Dry Gas, Stabilized Oil/ Condensate and Treated Produced Water.

The concept is made of typical offshore archetypes for Gas and Oil and Water processing – Gas – Liquid Cascade Separation, Gas Dehydration, Gas Multi-stage Compression, Gas Export, Condensate/ Oil Stabilization, Condensate/ Oil Export, Produced Water Treatment and Produced Water Disposal.

The utility systems include Gas Fiscal metering, Liquid metering, produced water metering, Fuel gas, instrument air, Power, chemical injection, drains, potable and industrial water, fire water, instrument air and nitrogen generation. The design capacity of the processing platform is 250 MMscf/d, with 20 kbpd of liquid hydrocarbon and 10 kbpd of treated water.

The Process concept is illustrated in Figure 30-2 below:

Figure 30-2 HA Process Concept