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Service

Riser & Conductor Installation Engineering

Installation engineering for risers and conductors on fixed platforms: clamp and guide design, lift and running procedures, vessel interface, fatigue during installation and the MWS-ready calculation package. Our team engineered a four-platform riser campaign with sixteen lifts, assessed feasibility for more than thirty riser lifts, and supervised conductor installation at Mumbai High for 120+ offshore days.

Riser & Conductor Installation Engineering

What you receive

  • Riser clamp, guide and support design and platform local-structure checks
  • Lift and running procedures with rigging, DAF and clearance studies
  • Conductor driving and installation engineering: stick-up, guide loads, driveability inputs
  • Vessel interface: crane reach, sea-fastening for transit, deck layout
  • Installation-phase stress and fatigue checks on riser and platform members
  • Method statement inputs, MWS submission and site supervision

Brownfield reality

Risers and conductors are installed on platforms that are already producing, with clamps that must fit existing legs, cranes that may not reach, and shutdown windows measured in days. The engineering therefore starts with a survey of the actual structure and a lift-by-lift feasibility study before any procedure is written. That is the scope we ran for thirty-plus riser lifts before the campaign was committed.

Delivered campaigns

Riser installation across four platforms and sixteen lifts; a conductor installation campaign at Mumbai High with 120+ offshore supervision days; riser lifting feasibility for 30+ lifts. All for the ONGC western offshore fields, prepared for marine warranty review.

Codes & standards

API RP 2AISO 19902DNV-ST-N001API RP 2RDDNV-ST-F201

Software

SACSOrcaFlexMOSESSTAAD.ProANSYS

Assets

Fixed platformsRisersConductorsJ-tubesCaissons
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Let's discuss how our engineering expertise can bring your vision to life — from concept to commissioning.

Projects that prove it

Riser installation — 4 platforms, 16 liftsCrane vessel installation engineering for risers across 4 offshore platforms — vessel selection, installation analysis, and methodology for 16 lifts.Conductor installation — Mumbai High, 120+ offshore daysSite supervision and project management for conductor installation at Mumbai High — 120+ offshore days, ONGC post-installation approval secured.Riser lifting feasibility — 30+ lifts assessedFeasibility assessment of riser installation across multiple candidate vessels — structural analysis and lift methodology for 30+ lifts assessed.

Related services

Lifting & Heavy-Lift EngineeringLift engineering for offshore and yard lifts: rigging design, lift-point and padeye checks, dynamic amplification, crane-vessel and barge stability during the lift, and the lift plan calculations reviewed by class or a marine warranty surveyor. Our team has engineered 100+ heavy lifts, including riser and conductor installation campaigns on ONGC platforms.Transportation & Installation (T&I) EngineeringTransportation and installation engineering for jackets, topsides, modules, risers and conductors: load-out, transportation, launch or lift, upending, set-down and hook-up analysed as one sequence, with the method statements and calculation notes the marine warranty surveyor reviews. Delivered for ONGC riser and conductor installation campaigns and vessel-based installations in Nigeria.Subsea Pipeline DesignSubsea and nearshore pipeline design to DNV-ST-F101: route selection, wall thickness and material grade, on-bottom stability (DNV-RP-F109), free-span and VIV fatigue (DNV-RP-F105), expansion and lateral buckling, shore approaches and HDD crossings, and installation analysis for S-lay and J-lay. Delivered from Mumbai for operators, EPCs and pipe-lay contractors.Third-Party Verification & Independent Design ReviewIndependent verification of offshore structural, naval architecture and pipeline engineering: design reviews, re-analysis with our own models, structural integrity assessments and owner’s-engineer review of contractor deliverables. Our team has reviewed five jackets and topsides for an operator and assessed 39 ONGC jacket structures, and supports jack-up site assessments in ONGC, ADNOC and Aramco fields.

Regions we serve for this

Offshore, Marine & Pipeline Engineering in IndiaKannamwar Engineering is headquartered in Mumbai and delivers offshore structural, naval architecture and pipeline engineering to operators, EPC contractors and yards across India: ONGC’s western offshore fields, HPCL’s marine terminals, west-coast LNG infrastructure and the east-coast basins. 39 ONGC jacket structures assessed, riser and conductor installation campaigns engineered, and 120+ days of offshore site supervision at Mumbai High.Offshore Engineering Support for the Gulf: UAE, Saudi Arabia, Qatar, Oman, KuwaitEngineering support for EPC, T&I and fabrication contractors and jack-up operators working in the Arabian Gulf: jacket and topside engineering, sea-fastening and load-out packages, lifting engineering, jack-up site-specific assessment support and third-party design review, delivered from Mumbai in the same working day. Saudi Aramco and Lamprell are among our clients.

Sectors

Offshore Oil & GasSubsea Pipelines, Cables & SURF

Disciplines

Offshore Structural EngineeringPipeline, Riser & Subsea