In line with Nigerian government’s inclination towards eliminating routine flaring and increasing supply of domestic gas (DOMGAS) to local industries and power plants, the Egbema West NAG GHF Project supports this philosophy by gathering, treating and compressing flared gasses to required specification& pressure, and routing the resulting gas to the Egbema IPP pipeline.
Specifically, the Egbema West NAG GHF is designed to produce 50 MMScf/d of gas. The Egbema West fields is located in OML-20, some 75 km North of Port Harcourt and the existing Egbema-West flowstation, commissioned in 1974 comprises of a single bank, three stage 30Mbpd oil and gas separation facility.
The Egbema West NAG GHF is designed to gather, treat and compress flared gasses to required specification and pressure, and route the resulting sales gas to the NDPHC owned Egbema Independent Power Project pipeline. Specifically, the Egbema West NAG GHF is designed to produce 50 MMSCF/D of gas
The Project Scope includes Engineering, Procurement, Construction, Installation and Commissioning for:
Main Process Skids
• Gas Compressor Unit.
• Inlet Header Skid.
• Refrigeration Unit.
• Glycol Unit.
• Liquid Handling Skid.
• Gas Metering Skid& Sales Gas Manifold.
• HCDP Control Skid.
• Fuel Gas Unit.
• Instrument Air Unit.
• Flare Unit.
• Pipe Rack System/ Plant Layout.
• Power Generators.
• MCC + Switchgear + UPS Package.
• FAR / Control Room.
• Telecommunication Systems
Project Design Objective
The design for the Egbema West NAG GHF Project is consistent with:
- Eliminating flaring of the gas produced from the flowstation.
- Supporting operability, maintainability and reducing NPDC’s OPEX.
- Supporting sustainable development of host community.
- Giving due focus to HSSE standards.
- Standardizing design template and equipment packages such that they can be modularised and be adapted for other locations.
- The needs for operational integrity throughout the projected minimum 30 years life cycle of the Facilities.
- The requirements of the gas customers, as specified in the gas sales contracts.
- Meeting the requirements of high availability, cost effective operations, minimum maintenance and environmental sustainability.
- Minimisation of site work to reduce exposure of personnel and equipment by driving off-site pre-fabrication and pre-commissioning of equipment packages.
- Designs to allow parts of the project to be fabricated and/or constructed as much as possible in Nigeria by Nigerian companies.
- Low operator intervention and minimised use of consumables.
- Optimum use of existing utilities and infrastructure.
- Flexibility with respect to future development scenarios.
Front End Engineering design (FEED)
Project currently in FEED phase and expected to be completed to International Standards. HAZOP Workshop completed. SIL Classification, Technical & Preliminary Plot Reviews ongoing and scheduled to run from 4th November-16th November, 2013 in ENERFLEX Houston office, USA. ENERFLEX is commissioned to design and fabricate process-related equipment with oversight functions provided primarily by MAKON and ultimately by NPDC, the end user.
Detailed Engineering Design (DED)
Project in FEED phase. ENERFLEX to handle DED phase of the project. Oversight function to be provided primarily by MAKON and ultimately by NPDC.
As a result of the direct derivative of the FEED and DED, Procurement is divided into Major Equipment and Materials (Foreign Long Lead Items and Overseas Bulk items) and Minor Equipment and Materials (Local procurements).
Construction and Installation
Being a green field project, the Egbema West NAG GHF Project will involve heavy construction activities. Collectively, a summary of the scope of construction activities for the NAG Facility include but not limited to:
- Site survey and Geotechnical studies
- Mobilization and Transport activities
- Surcharge Removal
- Mobilisation of Piling Works
- Piling and Installation of Pile casings in their required positions
- Prefabricate and install reinforcements on the installed piled casings
- Pile cap Construction of foundations as required for Piled Equipment
- Construction of raft foundation for skid and others as per AFC drawings
- Foundation for Equipment (piled)
- Construction of Temporary/ Permanent Site Access Roads within the facility.
- Precast of Storm water drains.
- Precast of Pipe/Cable Sleepers.
- Fabrication & Installation of Cable Tray Steel Works on Sleepers.
- Several Excavation, Blinding & Installation activities.
- Pipe Rack Foundation.
- Precast Equipment Foundation.
- Piling for Equipment Foundations.
- Excavation & Installation of Precast Storm Water Drains.
- Pour Concrete & Install Rebar for Equipment.
- Installation of Precast Foundation.
- Concrete Road Works (All Areas).
- Erection of process skids, vessels and Equipment unto foundations.
- Installation of various instrument valves and fittings.
- Laying of instrument cables plant-wide.
- Installation and Hook-up of Electrical Buildings.
- Installation of Electrical Cables plant-wide.
- Deployment of Telecommunication equipment.
- Re-assembly of Accessories for Skids.
- Other miscellaneous activities to ensure mechanical completion.
METS aims to maintain the highest Health, Safety and Environment Standards with no Loss-Time Injury (LTI) when construction proceeds.