ENI Congo Nene LNG WHP 1, WHP4R and WHP 5

Client:ENI / CSE
Facilities:ENI Congo Nene LNG WHP 1, WHP4R and WHP 5
Location:

The Nene field is located in Marine XII Block, approximately 17 km from the coast. Republic of Congo

Type of Project:Detailed Engineering Design for Wellhead Platforms
Synergy's Scope of Work:
  • - Detailed Engineering Design for three Wellhead Platforms namely WHP1, WHP4RP & WHP5
  • - Topside & Jacket Engineering, including support for T&I
  • - Specialist Engineering (Technical safety, simulations, etc)
  • - Procurement, Construction, Maintenance & Commisioning Support,
  • - Life Cycle Integration (LCI) until As-built
Topside/Facilities Description:
  • - Design Life 25 years
  • - Conductor 6 - 8 nos x 36"
  • - Topside weight ~1500 – 2000 MT 
Software:Full Multidiscipline Software
Year:2023 - 2025
Key Project Achievement:
  • - DED for WHP1 then continue to run-together parallel DED for WHP4RP & WHP5 with unique design challenge and complexity, 
  • - The Detail Design to sail away in 12 months
  • - Fit-for-purpose design achieved by following ENI Standard and Contractor requirements
  • - Multi-parties interfaces, mainly for Follow-on Engineering Support


ENI is developing the Nene LNG Field in the Marine XII Block, located approximately 17 km offshore from the coast of the Republic of Congo. The development is led by ENI as the operator, with CSE appointed as the EPC Contractor. The project comprises multiple offshore Wellhead Platforms, including WHP1, WHP4RP, and WHP5, supporting LNG production and export operations.


The project involves the engineering of compact and fit-for-purpose Wellhead Platforms designed in accordance with ENI Standards and contractor requirements. The facilities are configured to optimize structural efficiency, installation, and operational performance while meeting stringent technical and safety requirements.


Synergy Engineering executed Detailed Engineering Design (DED) for WHP1, followed by parallel DED for WHP4RP and WHP5, addressing the unique design challenges and complexity of each platform. The DED was completed on a fast-track basis, achieving sail-away readiness within 12 months.


Synergy’s scope of work covered full multidisciplinary Detailed Engineering Design (DED) for all three platforms. The scope included topside and jacket engineering with support for instrumentation and controls, specialist engineering services including technical safety and engineering simulations, procurement, construction, maintenance and commissioning support, as well as life cycle integration (LCI) until as-built. The project also involved coordination across multiple parties to support follow-on engineering requirements.