Phase -1 Study:

a) Perform global in place structural analysis and establish the current stress levels using latest applicable standards,loading and current in place conditions.

b) Perform Deterministic / Spectral Fatigue Analysis of the platform, considering an extended 20 years service from the present conditions.

c) Propose/identify modifications to loading or structural strengthening if necessary to extend the operating lives by 20 years above the original life using fatigue life predictions on the existing or modified structures.

Phase -2 Study:

a) Perform Non-linear Push over Analysis on the structures to establish the reserve strength ratio of intact and damaged structures and to establish the Boat impact capacity of the platform/boat landing.

b) Based on the outcome of the Phase-1, carryout detailed design of the strengthening & mitigation measures.

The results and conclusions of the above analysis and inspection data will be used for preparing a structural assessment integrity report of the platform. The critical member and critical joints will be identified in this report. Using the inspection data and analysis results, qualitative risk based inspection frequencies will be proposed with suggested inspection locations.

• External assessment will be considered in atmospheric zone, splash zone and subsea zone. The degradation rate at each zone will be considered with any observed defects to asses’ pipeline pressure capability, taking account of wet coating/corrosion protection coating and CP condition/performance on the applicable zones.
• Internal corrosion defects will be assessed to establish the future pressure capability based on estimated corrosion rate and estimate whether the line feasible for service with current MAOP. Internal corrosion modeling will be based on contemporary models of CO2-H2S corrosions, H2S cracking, bacteria and aqueous (O2) corrosion as well as SRB.

The desktop study will include following steps

• Review pipeline inspection reports (internal/Intelligent pigging and external inspection).
• Calculate the pipeline integrity with the current operating conditions and current MAOP (Maximum Allowable Operating Pressure) and determine remaining life.
  • a) Identify main degradation mechanism and predicted damage mechanism
  • b) perform internal and external corrosion rate calculations
  • c) Calculate pressure retaining capacity of using the procedure as identified in DNV RP-F101.
  • d) Use estimated corrosion rates to protect defect growth(future) and identify when MAOP will be comprise.
• Existing freespans and on bottom stability will be checked as per DNV RP F105 and DNV RP E 305-Fatigue life of unsupported pipeline length & additional stability requirement.
• Assess other possible threats to pipeline integrity (eg third party damage)
• Prepare a Complete report of the analysis, summary of results,conclusions and recommendations for submission to Bunduq for review and approval.

We glad to inform you that, MR Vision & Momentum used a Jack-up Rig (without mobilization of an installation Derrick barge) for OFFSHORE LIFT AND INSTALLATION of Platform Jacket, Deck and Boat-Landing in 50m of water for PETRONAS, PCPP, in Malaysian waters. This is highly appreciated by the industries in this region. This timely and successfully demonstrated Innovative & most cost effective method is given more confidence to the small & marginal field operators to adopt similar cost effective methods in this region.

1. Load Out Analysis:

• Transportation analysis of jacket and deck to the Jetty(trailer transportation)
• Load out analysis(lifted load out from Quay to the transportation vessel)
• Barge/transportation vessel ballast analysis for load out.

2. Transportation & Sea Fastening:

• Transportation analysis of the Jacket
• Transportation analysis of deck
• Sea fastening design of deck
• Sea fastening design of Jacket
• Barge local strength analysis
• Barge stability and ballast analysis during transpiration.

3. Lifting and upending

• Lift analysis for jacket for various critical positions of jacket (horizontal, vertical, inclined etcnas required) based on the installation procedure.
• Lift analysis for deck for various critical positions of deck as required based on the installation procedure.
• Design of lifting padeyes, Design of trunnions etc…
• Design of bumpers on the vessel during jacket upending.
• Lift analysis for deck for various critical positions of deck as required based on the installation procedure.
• Vessel ballast calculations for various phases of the jacket upending/lifting operations.

4. Unpiled Stability Analysis

• Perform unpiled stability analysis.
• Check the adequacy of mud mat for the operation

5. Driving Analysis.

• Perform pile drivability analysis using GRL WEAP.

Acid Gas Compression Unit (AGCU) was designed in 2003, with the exception of a shot run in February 2011, the AGCU operation has been suspended since 2006 due to concerns about chloride content in the fluids.

The desktop study will include following steps:

• Identify the materials of construction of each equipment item/pipe stream
• Review the combination of fluid, operational conditions and material for each item of equipment and pipe stream to assess the suitability of the materials selection for each case.
• If the current materials are not considered suitable then the main cause will be highlighted for each equipment item/pipe stream and mitigation measures will be proposed.
• Assess the feasibility of using carbon steel (CS) for some components.
• Discuss findings, drawing on relevant examples from industry and any relevant codes and specifications. Depending on the findings, assess alternative approaches for continued operability, suggesting alternative solutions if applicable.
• Acid Gas Unit materials assessment report Study Report
• Presentation at client/company office in Abu-Dhabi. The concise report will include a brief summary of the methodology, together with documentation of input parameters and assumptions. The focus will be on providing cost effective, safe and reliable, solutions, giving due consideration to lifetime of the installation. Clear recommendations, with alternatives if appropriate, will be given.

Main Objectivities:

• Assess design, production, installation data to evaluate the soundness of design and as-installed condition/as built integrity.
• Identify and assess likely threats to the line.
• Assess operational data and evaluate the current and projected integrity of the line.
• Discuss findings, drawing on relevant examples from industry and any relevant codes and specifications. Depending on the findings, assess alternative approaches for continued operability, suggesting alternative solutions if applicable.

Pipeline Study Report.

• The concise report will be on providing cost effective, safe and reliable, solutions, giving due consideration to lifetime of the installation. Clear recommendations, with alternatives if appropriate, will be given.

Initial Stability Assessment:

Initial Stability check has been carried out for the loading condition, the mean draft of this loading condition is at 4.80m. The vessel displacement is 3621mT.

Angle of heel for overboard lifting

Angle of heel has been checked for a 20mT load on the hook with a radius of 10m, while lifting over the port side. The angle of heel is 1.73 deg due to this lift and max draft port side is 5.2m, compared to summer draft of 5.60m.

Sea fastening loads

Sea fastening loads on the crane is estimated using default motion criteria as per Nobel Denton Guidelines for marine transportation

Design of stoppers

The two transverse stoppers have to take a load of 35.5mT each & longitudinal stoppers have to take a load of 18.4mT each.

• Safety wire mesh netting is specially designed and manufactured using premium quality Stainless Steel materials from the world’s most reputable steel mills.
• As per Offshore Helideck Design Guidelines, provides greater detail and supplements CAP 437 requirements.
• The third party Verification Bodies (e.g. DNv, Lloyds Register) compliance can be demonstrated.

TESTING

• Testing has been conducted in accordance with CAP437 requirements.

Scope of Work is to carry out detailed engineering study based on the Epoxy Grouted Clamp concept repairs and strengthening, inclusive of qualification tests for the repair system designed. A two half bolted repair sleeve system with epoxy grouted annulus for the above repair work the design and material requirements, and determination of minimum grout length, analysis and design of sleeve pipe for functional and environmental loading and design of corrosion protection system were the major activities. Based on the available data, single Epoxy Grouted Clamp was installed.

The engineering scope included:

a) Sizing of pipeline sleeve repair system, for sleeve structural design analysis.

b) Detailed design for the sleeve shell, grout bonding, flanges, bolting system and end seals based on BCL’s Technical Requirements.

c) Develop relevant specifications, installation procedures and design of installation aid for external corrosion protection on the pipeline using suitable coating and cathodic protection.

d) Fabricate the sleeve repair system according to the BCL’s Approved Design and monitoring the fabrication work and approval from the third party.

e) Perform pressure leak test witnessed by third party on sealing material for grouting injection purposes using the fabricated sleeve and diver familiarization.

Offshore Sleeve Installation Project Management:

Provide the complete underwater installation Project Management consultancy and supply of specialist engineers / supervisors, installation team and equipment for execution of the repair of the pipeline and the installation of the sleeve.

As a part of Bombay offshore oil field development program, M/s. ONGCL is carrying out Subsea Pipeline line removal from MHN platform at Bombay High North having a water depth above 72 meter and 200 km off west cost of Mumbai, India.

For subsea Pipelines replacement engineering activities, M/s MR Vision Pipelines provided the Mooring analysis using Ultramarine program “MOSES” software for minimum 8 numbers of locations.

Being one of the oldest offshore oil field in India MHN is fully crowed with subsea assets, Mooring analysis 15m close to the platform for removal of Pipeline Riser section was the challenging task which we successful carried out, got approved from MWS and clients for positioning the Barge.

The engineering activities included the following analysis:

• Maximum Line Tension
• Length of Catinery & Anchor Uplift.
• Vessel Excursions.
• Line Pretensions & Winch Runs.
• Mooring Line SWL & Anchor Holding Power.
• To issue conclusion including recommendation for safe mooring during positioning the Barge.

To avoid contact with near pipelines, a damage prevention buoy has been added to the line along with pennant wire.

M/s Citic Pacific Mining Management is developing Cape Preston Port, approximately 100 km southwest of Dampier, Western Australia, for handling shipping of Iron Ore concentrates and pellets. As a part of outfall system, a single buried Subsea Pipeline is required to be designed from the desalination plant to the diffuser section at the end of the breakwater section in the sea.

As a part of Subsea Pipelines Design activities, M/s MR Vision Pipelines provided the Detailed Engineering & Project Management support which included the following:

• Subsea Pipeline Design. This involved the HDPE pipeline wall thickness design and lateral stability during installation and operation. The proposed pipeline was of 2000mm diameter, 165m long. The work also involved the design of 1600mm diameter diffuser pipe.
• Subsea Pipeline Installation Engineering. The work involved the development of installation procedure, installation engineering for the pipe lowering activity.
• Offshore Project Management Support.
• Preparations of Tender Documents.
• Project Technical guidance to the client etc

Ceylon Petroleum Storage Terminals Ltd. (CPSTL) to install a new 18” Subsea Pipeline connecting new SPBM to storage tanks. The Single Point Mooring (SPM) system is located in 18 meters water depth, 6.065 km long, 457 mm (18”) diameter for unloading/transportation of crude oil from SPBM to Crude Oil storage Terminal through ocean oil tankers.

As a part of the construction engineering support to the installation contractor, M/s MR Vision Pipelines carried out the Quasi-static Mooring Analysis for the pipe-laying of 18” diameter pipeline using “MOSES” software for the installation barge. After barge modification, reanalysis of the same were carried out again as advised by the client.

M/s Bharat Oman Refineries Limited (BORL) plan to have a Single Point Mooring (SPM) system approximately 17.0 km long 1219mm (48”) diameter for unloading / transportation of crude oil received through ocean oil tankers. The installation scope included installation of SPM & PLEM System (at approx. 32 m water depth) including Installation of 1219mm (48”) diameter, approx. 15.0 km long and 100-130mm concrete coated submarine pipeline.

To perform the installation of 48” offshore subsea pipeline, the Installation Contractors had engaged the services of M/s MR Vision Pipelines to carry out the Construction & Installation engineering Consultancy for the pipe-laying of 48” diameter pipeline using software “OFFPIPE” & “MOSES”. The installation engineering activities included the following analysis:

• 2.7 km long Pipeline Shore Pull calculations, using 300 Ton winch.
• Quasi-static Mooring Analysis during Shore Pull.
• Quasi-static Mooring Analysis during pipe-lay operation
• Conventional Pipe lay Analysis - Static & Dynamic.
• Termination Analysis.
• Abandon & Recovery Analysis.
• Spool lifting Analysis.
• PLEM pile ballast calculations etc.

The installation of 40” offshore pipeline in the Black Sea Off Midia, Romania. As a part of the construction engineering support, Installation Contractors engaged the services of M/s MR Vision Pipelines to carry out the Construction and Installation Engineering for the pipe-laying of 40” diameter Subsea pipeline using software “MOSES” & “OFFPIPE”. Analysis details are:

• Quasi-static Mooring Analysis during Shore Pull.
• Quasi-static Mooring Analysis during pipe-lay operation.
• Pipeline Conventional Pipe lay Analysis – Static.
• Pipeline Conventional Pipe lay Analysis – Dynamic.
• Termination Analysis.
• Abandon & Recovery Analysis.

In Ravva offshore Oil field (located off the east coast of India approximately 400km north of Chennai) M/s Cairn Energy proposed to lay 4 segments of new subsea pipelines Installation and commissioning which are running between:

1. 12” Subsea Pipeline from RD platform to RT (Ravva onshore terminal) – 11 km – oil line (Well fluid).

2. 12” Subsea Pipeline from RT (Ravva onshore terminal) to RD platform – 11 Km – water injection line.

3. 10” Subsea Pipeline from RD platform to RC platform - 6 Km - water injection line.

4. 8” Subsea Pipeline from RE platform to RF platform- 4 Km - water injection line.

M/s MR Vision Pipelines services were hired by M/s Cairn energy pvt ltd, India (CEIL), to provide consultancy services for the technical review of installation contractor’s complete activities. CEIL utilized M/s MR Vision Pipelines services as a consultant for the services required for Ravva including but not limited to following:

• Review of various technical documents and procedures submitted by installation Contractors.
• Assisting Company in supervision of various activities like Offshore survey, Subsea pipeline installation etc.
• On board as client representative during Offshore Survey and Offshore Pipelay operations.
• Attending various meetings along with Company’s representative in engineering discussions in India or abroad.

Provided value added services for lowering the pipeline laid on surface into the 2m trench near the beach wave breaking area.

16" diameter Pipe, of wall thickness 20.5mm, 36m in length and of API 5L X-46 grade was required to be lifted off from the barge. Installation contractor proposed to use 8m length Spreader bar for lifting. Lifting analysis-using "STAAD PRO" software as per the installation requirement was carried out. The analysis was reviewed and certified by Germanisher Lloyd in their capacity as third party certification agency.

18" diameter Pipe, of wall thickness 12.7mm, 27m in length and of API 5L X-52 grade was required to be lifted off from the transport barge. Installation contractor proposed to use 8m length Spreader bar for lifting. Lifting analysis-using “STAAD PRO” software as per the installation requirement was carried out.

Based at Design Center at Kualalumpur-Malaysia, M/s MR Vision Pipelines provided Detailed Engineering Support for the following Pipelines & SPM project in Jamnagar – Gujarat, India.

The project involved detailed design of total 4 numbers SPM, 6 numbers of Pipelines and 1 riser which are;

• 4 X 30” Subsea Pipelines (4 x18 kms),
• 2 X 48” Subsea Pipelines (2 x 20 kms) and
• 1 X 30” Riser at NRPD platform.

Apart from this we were involved in the design of;

• Platform Riser,
• Pipeline Crossovers and Tie-in spools etc.

Based at site office in Kochi, our team was involved in the Installation Engineering for laying of the 48” 19km offshore pipeline, installation of Pipeline manifold (PLEM) & piles, installation of tie-in spool, anchor pile installation for single Point mooring (SPM) buoy, SPM buoy installation and hookup, spooling activities onshore and pre-commissioning activities.

M/s MR Vision Pipelines was involved in the Design Verification of Installation Activities such as PLEM lifting, Pile installation, Tie-in spool lifting, Pipeline installation study using OFFPIPE program, pipeline stability verification and shore pull.

We also provided assistance in Preparing the Work Method Statement for all offshore installation activities pertaining to pipeline laying, PLEM installation, Tie-in spool installation and SPM buoy installation and hook up. We had seconded our engineers on barge for Assisting Pipeline Installation Activity