METOCEAN

METOCEAN Consultancy for Offshore and Coastal Structures

Structures to be installed in an offshore location or in coastal waters need to be able to withstand the environmental forces. The environmental forces that have impact on the structures include winds, waves, ocean currents, tides, water level surges, etc.

OFFSHORE STRUCTURES

COASTAL STRUCTURES

DATA COLLECTION FOR METOCEAN STATISTICS

To provde data for types of ocean and air physical properties and chemical properties also have impact on the structures. Design of the structures, therefore, must consider all those factors.

Accurate statistics of those environmental forces are vital to the safety of the people and property as well as the economy of building and maintaining the structures.

Overly conservative design of the structures would incur heavy economic cost unnecessarily.

Under design of the structures would save cost of building the structures and also maintenance of the structures but may result in unsafe structures that could be damaged by the next storm and jeopardizes people's life. And the consequent cost of repair and disruption of operations/productions are usually very high.

METOCEAN STATISTICS

Proper design of the offshore and coastal structures requires accurate metocean statistics. To obtain accurate metocean statistics, metocean data of good quality covering sufficient length of periods is essential.

There are two ways to acquire metocean data:

IN-SITU MEASUREMENTS

In-situ measurement, if conducted properly, provides the most accurate and reliable metocean data.

However, it would take long time and incur great cost in collect good quality metocean data over a period of a few years.

COMPUTER MODELING

Computer modeling, in the other hand, can be performed in a short period of time and generate a dataset covering tens of years.

However, the results from a computer modeling do not necessarily represent the actual processes in the ocean. There can be large errors in the modeling results.

COMMON PRACTICE

Combination of the two method: collecting the in-situ measured data over a short period of time and use that to help to tune the computer models and verify the computer modeling results. That would ensure the reliability and accuracy of the computer model to produce a dataset over a long period of time, usually over 30 years.

METOCEAN DESIGN CRITERIA FOR METOCEAN STATISTICS

To provde data for types of ocean and air physical properties and chemical properties also have impact on the structures. Design of the structures, therefore, must consider all those factors.

Accurate statistics of those environmental forces are vital to the safety of the people and property as well as the economy of building and maintaining the structures.

Overly conservative design of the structures would incur heavy economic cost unnecessarily.

Under design of the structures would save cost of building the structures and also maintenance of the structures but may result in unsafe structures that could be damaged by the next storm and jeopardizes people's life. And the consequent cost of repair and disruption of operations/productions are usually very high.

METOCEAN STATISTICS FOR OFFSHORE SUPPORTING ACTIVITIES

All offshore operations are concerned with meteorological and oceanographic conditions in the operating area, and are benchmarked against severity of the various conditions. Operations would have to stop if the metocean conditions are over the operation limits, which determine thresholds of a particular set of metocean parameters only within which the operation can be carried out.

For example, a heavy lifting operation may be allowed only when wave height is below 1m, wave period less than 8 seconds, and wind speed less than 10m/s.

Another example is selecting a suitable drilling rig to operate in a particular site. Different phases of operations for a jack-up drilling rig, e.g. jacking up, drilling, and jacking down, have different metocean operating limits. When selecting a jack-up rig for the drilling operation, operation safety and economy considerations have to take into account of the metocean conditions for the period the rig would be operating on the site.

METOCEAN STATISTICS BASIC TYPES

The basic types of metocean statistics include frequency of occurrence, joint frequency of occurrence, and persistence.

Frequency of occurrence, presented either as number of occurrence or percentage of occurrence, gives the simple distribution of the values of a give metocean parameter.

Joint frequency of occurrence involves two or three parameters, usually magnitude vs. direction (wind speed vs. wind direction), or magnitude vs. magnitude (wave height vs. wave period), or magnitude vs. direction, vs. magnitude.

Persistence includes a time factor, i.e. the continuity of the values of a parameter.

There are variants of the statistics, such as exceedence and operabilities.

METOCEAN STATISTICS USING RAW DATA

Proper planning of weather sensitive operations requires accurate metocean statistics.

Over estimate of the metocean conditions would result in unnecessary operating costs. And under estimate of the metocean conditions might results safety breaches or incur excessive down time.

Accurate and representative statistics rely on accurate raw metocean data over a sufficiently long period because the metocean conditions not only have annual seasonal cycles but also multiple year cycles, e.g. El Niño.

Therefore, the raw metocean data ideally need to cover 10s years. Globally, more and more metocean stations have been installed and the collected data have been more accessible due to the efforts of international and national, public and private organizations.

Notably, the use of satellites for metocean observations since late 1970s have dramatically increase the global coverage and accuracy of the data collected. Observations of extreme weathers, such as tropical cyclones, have become more accurate.

OUR WORK EXPERIENCE COVERAGE

OUR WORK EXPERIENCE COVERAGE

OUR WORK PROFILE

METOCEAN ACTIVITIES CONDUCTED

Design, procurement, installation, and maintenance of one offshore automated metocean stations for a platforms offshore

Sabah, Malaysia

Wave buoy real-time monitoring in support of field development operation at Tapis Field

Off peninsular Malaysia

Current and tide measurements and data reporting in support of a drilling campaign at Block M2

Offshore Myanmar

Turn-key project to provide a heli-pad/metocean monitoring system for Yetagun Platform

Offshore Myanmar

Wave buoy real-time monitoring in support of field development operation at Tapis Field

Off peninsular Malaysia

Real-time current monitoring and warning services in support of drilling operation, including installation a mobile ADCP monitoring system onboard Songa Venus and issuance of daily strong current warnings.

Offshore Sabah

Real-time current profile monitoring services onboard Songa Mercur

Offshore Sabah

Design, procurement, installation, and maintenance of offshore automated metocean stations for platforms

Malaysian waters since Jun 2011

ADCP current measurements

Offshore Sabah

Tide measurement, analysis, and prediction (Dec 2011 to May 2012)

Offshore Sarawak

Participating in a metocean data collection program for Chevron in support of construction of offshore supply base, ADCP mooring deployment/recovery, data analysis and reporting.(2008 – 2010).

Thailand

Metocean Consultancy and Studies PROVIDED

Metocean criteria study in support of design and build of a drilling rig

Vietnam waters

Metocean criteria study in support of design and build of a semi-sub drilling rig - global waters

Braemar Offshore

Metocean condition study for a location near-shore Luzon

Philippines

Metocean condition study for near-shore Bongabong

Philippines

Metocean condition study

ZAWTIKA Development Project

Metocean condition study for Chim Sao Field

Offshore Vietnam

Metocean criteria study and solitons study for Block SC14C2

Offshore Palawan, the Philippines

Metocean criteria study for a tow route

Batam to NW Australia

Metocean criteria study for Block AD6,

Offshore Myanmar

Metocean criteria study for a tow route Batam to the Ichthys Field

NW Australia

Metocean area report for Block 12W

Offshore Vietnam

Metocean area report for the Lengo and Tayum Fields

Offshore Indonesia

Metocean design criteria report for a Husky Oil’s pipe line Gaolan Island to Lamma Island.

Offshore China

Metocean downtime study for Block 13

Offshore Vietnam

Wave distribution study for Bualuang Field

Offshore Thailand

Metocean criteria study for a tow route from Batam to the Gorgon Field

NW Australia

Current forecast and consultancy services for Kerupang Field

Offshore Sabah, Malaysia

Metocean design criteria study for the Balai Cluster Fields, offshore Sarawak, Malaysia

Metocean design criteria study for 3 areas

Offshore Thailand for Chevron Thailand

Metocean condition study for the Woollybutt Field

Offshore Western Australia

Metocean condition study for a tow route Ulsan, Korea, to Lombok Strait

Indonesia

Metocean condition study for NW Shelf

Offshore Australia

Metocean criteria study for Makassar Strait

Indonesia

Metocean criteria study for Gulf

Thailand

Metocean criteria study for Block 128

Offshore Vietnam

Metocean condition study for Block 07/03

Offshore Vietnam

Coastal meteorological and oceanographic data acquisition and analysis program in support of its shore base development project (Aug 2008 to Jan 2011)

Metocean design criteria study for a location in Bangka Strait

Indonesia

Metocean design criteria study for a LNG receiving station off Sg. Udang

Malacca, Malaysia

Weather window study for Block SK305

Offshore Sarawak, Malaysia

Metocean criteria study for a location in Timor Sea in support of field explorations and production

Timor Sea

Metocean condition study for a tow route

Shekou, China, to Dampier, Australia

Metocean condition study for Tapis Field in support of field development

Malaysia

Metocean condition study and sediment movement modelling for Bang Pakong River Delta

Thailand

Long term metocean consultancy contract providing expertise in meteorological and oceanographic services for Chevron Thailand since July 2007.

Chevron Thailand

Metocean conditions study for a route Java to Gulf of Thailand in support of transport of offshore structures.

Thailand

Currents and sediment transport modelling study for offshore Sarawak, Malaysia, as part of the National Offshore Sand Resources Survey project.

Malaysia

Metocean condition study for a location in Java Sea in support of field development

Java Sea

Metocean condition study for a location offshore Qatar in support of offshore operations

Qatar

Metocean Criteria Study in support of design and construction of a jetty off Batu Ampa

Batam, Indonesia

Metocean condition study for a location offshore Mumbai, India, in support of COOEC’s offshore installation operation

Mumbai, India

Wind and wave operational criteria

Natuna Sea, Indonesia

Tidal prediction for a location

Natuna Sea, Indonesia

Metocean design and operational criteria study for Cadlao Field

Offshore the Philippines

Wave climate and design criteria study in support of construction of a LNG receiving port

Off Zhuhai, China

Metocean condition study for tow routes

Batam, Indonesia, to Bass Strait, Australia

Wave climate and design criteria study in support of construction of a LNG receiving port

Off Macau, China

Metocean design and operational criteria study for Argao Field

Offshore the Philippines

Wind and wave operational criteria for selection of barge working in Gulf of Thailand.

Gulf of Thailand

Numerical modeling of atmosphere, wave, currents, and sediments and derivation of metocean design criteria in support of SBM facilities design and construction.

Metocean condition study for Block 14

Offshore Vietnam

Metocean condition study for a tow route

Singapore to Melbourne

Metocean condition study for Block A-18 JDA

Offshore Malaysia/Thailand

Metocean condition study for a location offshore NE Sumatra in support of exploration operations.

NE Sumatra

Provision of metocean design criteria in support of a pipeline construction project

Offshore Vietnam

Provision of metocean design criteria for a deep water block

Offshore Philippines

Provision of metocean statistics in support of a field construction project

South China Sea

Metocean design criteria in support of jack-up rig selection and drilling operations

Gulf of Thailand

Metocean condition study for Bontang Field, Indonesia, in support of exploration operations.

Indonesia

Metocean condition study for Mekong Delta Block 1, Vietnam, in support of exploration operations

Vietnam

Metocean condition study for a planned tow route

Singapore to Dampier, Australia

Provision of tropical cyclone statistical data for a planned tow route

eastern Asia

Metocean condition study in support of offshore exploration

Off southern Vietnam

Provision of statistics and extreme values of winds and waves in support of a jetty construction project

Off Karimum Island, Indonesia

Provision of statistics of wind, wave, and surface currents, including extreme values of winds and waves, for a block

Offshore Palawan, the Philippines

Ice coverage analysis and wave and wind condition study for seismic vessel operations.

Sea of Okhotsk

Angel Project - 10-year extreme wave estimations along different tow routes.

Extreme gusts study for jacking and loadout of Arthit deck.

Block 46/02 (North of PM3) - Data for Drilling and Production: 100-year extreme winds, waves and currents by direction. 100-year storm data also analyzed. Wave and Tz JFT data for mooring design.

Data for Drilling Programme: Monthly JFTs of wind speed/wave height by direction. Storms 250NM of study location analyzed.

West Natuna Sea

Data for Drilling and Production: Custom analysis of directional wave spectra for mooring design.

Galoc / W. Linapacan

Preliminary study for Drilling programme: Typhoon transit time analysis; wave and wind exceedences.

Timor Sea

Extreme gusts study for jacking of STV CPP deck.

PM3 Fabrication Yard

Tropical Storm Analysis for tow route from Shanghai to Singapore. Typhoon probabilities and transit times analyzed.

South China Sea

Analysis of tow route from Singapore to Sisi Nubi, Makassar Straits. Extremes of waves, zero-up-crossing period, wavelength and wind speed.

Singapore to Sisi Nubi, Makassar Strait

Calculation of weather windows for the Seadrill 6 while deployed in Lunskoye.

Lunskoye

Offshore Sakhalin, West Africa and the Mediterranean Sea - Air Gap Calculations for a number of sites.

South China Sea, Java Sea

Weather Forecast Services PROVIDED

Provision of ocean current profile forecasts in support of offshore operations.

South China Sea

Provision of ocean current forecast in support of offshore operations

offshore Vietnam

Provision of ocean current profile forecast in support of offshore operations

offshore Tanzania

Provision of ocean current forecasts in support of transportation of Blackford Dolphin

Brazil to Belfast

Provision of ocean current profile forecasts in support of offshore operations

South China Sea

Provision of ocean current forecasts together with weather forecast in support of field exploration operations

NW Shelf, Australia

Provision of ocean current forecasts together with weather forecast in support of a field development project

NW Shelf, Australia

Provision of offshore weather forecasts for various routes, including routes between Singapore and Northeast Aisa, South Africa, West Africa, and South America.

Provision of offshore weather forecasts for the Malaysia / Thailand JDA, 2007-2012

Provision of offshore weather forecasts for Songkhla Field 2008 – 2015 (ongoing)

Provision of offshore weather forecasts for FPSO, Salamander Bualuang Field, Thailand and FPSO Galoc Field, Philippines 2008-2015 ongoing

Contracted supplier of weather forecasting services for tow routes, including Singapore to Northeast Asia, West Africa, and South America. 2005 to 2009.

On-site ocean currents and water level forecasts in support of a float-over operation.

Contracted supplier of marine and aviation weather forecasting services for production and drilling operations in the Natuna Sea since 2005

Natuna Sea

Contracted supplier of forecasting services for production and drilling operations offshore Brunei since 2006.

offshore Brunei

contracted supplier of routine weather forecasts, plus on-site forecaster during the three-month Typhoon Season

Gulf of Thailand

Contracted supplier of marine and aviation weather forecasting services for Mobil Cepu project, Indonesia since 2008

Cepu project, Indonesia

Contracted supplier of weather forecast services for the Bongkot & Arthit fields (2002-2005 and 2009 - present).

Gulf of Thailand

Provision of weather forecast services in support of field construction operations

Lufeng Field, offshore China

Provision of offshore weather forecast services in support of offshore telecommunication cable installation operations

Indonesia

Provision of offshore weather forecast, including weather outlook up to 15 days ahead, for a location in central South China Sea

central South China Sea

Supplier of meteorological support services for drilling program in Nam Con Son Basin off SE Vietnam (2006-08)

SE Vietnam

Provision of weather forecasting services for tow routes and site specific operations Gulf of Thailand, Myanmar, and metocean studies for routes/downtime for Java Sea, Natuna Sea and Myanmar since 2005.

Supply of route and site forecasts for construction barges in Gulf of Thailand, Malaysia, Myanmar, Vietnam & Indonesia.

Supply of weather forecasting services for seismic survey vessels working in Japan, Sakhalin, China, Vietnam, Thailand & India

Supply of route & site forecasts for GSF ‘Key Gibraltar’, Galveston Key, Rig134 and ‘Constellation 1’ rigs Malaysia, Myanmar & Vietnam.

Contracted supplier of weather forecasting services for drilling operations

off SE Vietnam

Contracted supplier of weather forecasting services for drilling operations

off SE Vietnam

Provision of forecast support for drilling program Browse Basin

Browse Basin

Contracted supplier of route & site weather forecasting services for ROV & vessel operations

Asian & Australian regions

Provision of emergency forecast services during tow breakdown, Java Sea, Indonesia Tow route forecasts for Australia & Asian operations

Contracted supplier of weather forecast services for the Bongkot & Arthit fields

Gulf of Thailand

Supplier of route and tropical cyclone forecasts Korea to Timor Sea for Bayu Undan FSO.

Korea to Timor Sea

Supplying forecast support for tows and installation of Apache John Brookes jacket/pipeline project

Woodside Angel Project

supplying weather forecasting support for drilling programs

Offshore southwestern Vietnam

Supply of tow route & site specific forecasts for drilling campaigns

Santos Sampang and Bali North Indonesia

supplying weather forecasting services for the towing and installation of platforms at Bayu Undan.

Timor Sea and routes from Korea to Bayu Undan

Provision of Tropical Cyclone forecasts & warnings for NW Australia during Cyclone Season

NW Australia

Provision of forecasting support for drilling programs in Timor Sea and Bass Strait plus tow forecast New Zealand – Bass Strait.

Timor Sea and Bass Strait

Supply of route forecasts to Castoro 2 and Semac 1 Singapore - Dampier and pipe-lay forecasts for TSET trunkline, Northwest Shelf, Minerva Field and BassGas, Southern Australia

Supplying weather forecasting and advisory services for drilling assessment program for channel deepening, Port Phillip Heads, Victoria.

Provision of weather forecast support for mobilization Batam – Tasmania and Origin Energy Bass Gas installation in Bass Strait, and for barge Java Constructor

Java Sea

Supply of forecasting support and Tropical Cyclone advice for drilling and installation program in Otway Basin, southern Australia, the Northwest Shelf and Indonesia

Contracted supplier of weather forecasting services for MODU drilling program

Bass Strait

Contracted supplier of weather forecasting services for drilling operations off NW Western Australia.

BHP Billiton

Supply of weather forecasting support and advice for wave energy project

Port Kembla NSW, Australia

Supply of weather forecasting support and advice for outfall pipe work

off Belmont, NSW, Australia

Weather forecast provider for drilling programs

New Zealand and Northwest Shelf, Western Australia

Provision of on-site forecaster for the installation

Yacheng platform

Supply of forecasting support and Tropical Cyclone advice for Trident 16 Truong Son drilling program, Vietnam and Barge Charlie Graves, Malaysia. Supply of tow forecasts in SE Asia region. Supply of forecasting support and Tropical Cyclone advice for drilling program

off Northwest Australia

KNOC – Contracted supplier of weather forecasting services for drilling operations

off SE Vietnam and Indonesia

Contracted supplier of weather forecasting services for drilling operations in the Gulf of Thailand

Black Swan Petroleum (Thailand) Ltd

Contracted supplier of weather forecasting services for drilling operations in the Gulf of Thailand

Pearl Oil

Contracted supplier of weather forecasting services for tow route from Singapore and operations at Bayu Undan field in the Timor Sea and Bass Strait.

Polycrest

Contracted supplier of weather forecasting services for tow routes from Southeast Asia to Hong Kong & China, and operations for Lamma Power Station Submarine Gas Pipeline operations, Weizou Pipeline installation program, BP Tangguh installation (Berau Bay, Papua) Indonesia PTT/TTM Project, Gulf of Thailand and Wenchang, China.

Supplier of weather forecast services plus on-site forecaster (2+ months) for the installation of Lan Tay platform, subsea completion and pipeline pull.

Offshore Vung Tau, Vietnam

Supply of routine site-specific weather forecasts.

Offshore Vung Tau, Vietnam

Mermaid Marine – Provision of route weather forecasting services

NW Australia to West Africa

Supply of marine route and site forecasts for construction barges in Malaysia & Indonesia

Swiber Offshore

Weather service provider for drilling operations offshore central Vietnam

Plains Vietnam Ltd

Supply of weather forecasting services for seismic survey vessels working in Angolan waters

Geokinetics Inc

Provision of route weather forecasting services from Australia to SE Asia and Middle East

SeaTow

Supplier of weather forecasting services for FPSO ‘Maersk Vincent’, BHP Vincent Field, Western Australia

Maersk

Provision of forecast services plus on-site forecaster for float-over

Murphy Oil Kikek platform, Sabah, Malaysia

Provision of route & site weather forecasting services for installation and pipe-laying operations

Labuan – Kikeh, Sabah, Malaysia/p>

APD Biliton & APD Glagah Kambuna – Supply of meteorological support services for drilling programs in West Java Sea and Kambuna Block, Medan area, Malacca Straits, Indonesia