The V. Filanovsky oilfield facility represents a landmark offshore engineering project in the Russian sector of the northern Caspian Sea. Located 170 kilometers south of Astrakhan in shallow waters, this complex development required sophisticated engineering solutions for float-over operations in challenging environmental conditions. TECON provided comprehensive engineering services to SAIPEM, the primary client working on behalf of LUKOIL, covering all aspects of the topsides installation and integration.

The project presented unique challenges due to its location in the ice-prone waters of the Caspian Sea and the complexity of coordinating multiple platform installations. The facility required precise engineering for the safe transportation and mating of massive topside structures, including specialized ice-resistant platforms, processing facilities, and interconnecting bridges. The harsh environmental conditions demanded robust fender systems and carefully designed sea-fastenings to ensure safe transit and installation of all components.

Project Scope

The first stage of offshore operations at the V. Filanovsky oilfield involved the installation and integration of four major platforms interconnected by bridges. TECON’s scope encompassed the complete engineering cycle for float-over operations, from initial naval architecture analysis through final structural design of all support systems and equipment.

Platform Facilities

• Ice-Resistant Fixed Platform (IFP-1) – Primary production platform designed to withstand severe ice loading conditions
• Living Quarter Platform (LQ-1) – Accommodation facilities for operational personnel
• Central Processing Platform (CPP) – Main processing and treatment facilities for oil and gas production
• Riser Platform (RP) – Equipped with flare system for safe gas management
• Connecting Bridges (CB) – Structural links between LQ-1 and IFP-1, IFP-1 and CPP, and CPP and RP

Marine Transportation Engineering

• Comprehensive naval architecture analysis for sea transport of all topsides
• Motion analysis and stability calculations for flare and bridge structures during transit
• Route planning and weather window analysis for safe transportation
• Barge selection and verification for each major component

Float-Over and Mating Operations

• Detailed mating analysis for CPP, LQ-1, and IFP-1 topsides onto jacket structures
• Float-over operation procedures and sequencing
• Tolerance analysis and alignment verification systems
• Load transfer analysis during mating operations

Structural Design Services

• Custom fender system design for barge and substructure interfaces
• Grillage structural design for optimal load distribution on transport barges
• Sea-fastening systems engineering for topsides, flare, and connecting bridges
• Stress analysis and structural integrity verification for all designed components

Engineering Approach

TECON’s engineering methodology combined advanced naval architecture principles with practical offshore installation experience. The team utilized sophisticated finite element analysis and computational fluid dynamics to model the complex interactions between structures, vessels, and environmental forces. Particular attention was given to the ice-loading conditions unique to the northern Caspian Sea, ensuring all designed systems could withstand both operational and extreme environmental scenarios.

The float-over operations required precise coordination between multiple engineering disciplines. TECON developed comprehensive procedures that accounted for tidal variations, wave action, and the dynamic behavior of both the transport vessels and receiving structures. The fender systems were designed with multiple redundancies to ensure safe operations even under off-nominal conditions, while the sea-fastening arrangements provided secure restraint during what could be extended transport periods through variable sea states.