OTL performed LF12-3 Jacket FEED design and analysis, included all in-place analysis and other miscellaneous calculations. LF12-3 DPP is located at the water depth of 240.8m.

OTL performed LH11-1 Jacket third party independent verification, included in-place and pre-service analyses and other miscellaneous calculations. LH11-1 DPP is located at the water depth of 325 m.

OTL performed jacket optimized design based on iterated analysis results. The original preliminary dry weight of the jacket is around 7000 m.tons, and it is to be installed with a crane vessel  (DLS4200) with the lifting capacity of 3000 m.tons @ the radius of 44 m. The technical solution is to optimize the jacket configuration, reduce the jacket weight and increase the jacket buoyancy and design additional buoyancy boxes to meet the crane lifting capacity requirement.

OTL performed jacket and topside optimization design based on iterated analysis results. The jacket lift weight after optimization is reduced significantly and ensure its total lift weight being less than the required 1700 MT and save around 430 MT jacket steel weight. Also after optimization, the weight of the topside structure is reduced by around 600 MT.  The TP-13 platform is located at the water depth of 49.1 m.

OTL performed NQL jacket configuration design. Two jacket configurations (horizontal lift/upending option and launch option) have been proposed based on available crane vessel and launch barge.  The platform is located at the water depth of 65.5 m.

OTL performed LF14-4 Jacket third party independent verification, included in-place and pre-service analyses and other miscellaneous calculations. LF14-4 DPP is located at the water depth of 144.3 m.

OTL performed LF15-1 Jacket third party independent verification, included in-place and pre-service analyses and other miscellaneous calculations. LF15-1 DPP is located at the water depth of 284.2 m.

OTL performed the compliant piled tower (CPT) pre-feed study at water depth of 330 m, including complete in-place and pre-service analyses, miscellaneous calculations and the whole-set of structural and installation drawings. The work evidences that CPT concept in general is valid for application in South China Sea with water depth 330 m and deeper.

OTL performed the engineering detailed design for the Tekel-A jacket, including in-place and pre-service analyses.

Successfully completed basic design for two heavy deepwater jackets- one drilling platform (PP-PIT-A) and one power generation/accommodation platform (PG/H-PIT-A) as well as a bridge connecting the two structures.

Performed the repair engineering of a deepwater jacket that has been in service for 15 years. OTL investigated the extent of fatigue damage to the jacket, the means to repair it, and the installation method necessary for the repairs. 

Performed various analyses to justify whether the old jackets are still in operational condition after 25 years of service. Developed mitigation plan in order to resolve issues.

OTL performed load-out, transportation, launch, floatation, upending, and on-bottom stability analyses. Additionally, OTL revised and optimized the jacket design. 

Performed extensive preliminary structural and marine analysis and design for this jacket to be installed in the North Sea.

Performed various analyses and assisted in the development of the design drawings and specifications for this serious of well protector platforms in the North Sea.

Based on the results of a survey data on aged jackets off the coast of Indonesia, OTL identified and analyzed possible structural failures and weaknesses, and developed a program to strengthen the structures involved.

OTL performed analysis for the design of this triple deck platform, as well as its transportation and installation off the coast of Equatorial Guinea. 

OTL performed advanced engineering design for multiple jackets in the North Sea.

Performed detailed engineering, jacket pre-services, and topside floatover installation analysis and design for what would be the first offshore wind farm in the Untied states.