Chevron’s Tahiti Project consisted of two (2) drill centers tied back to a newly installed host spar facility in Green Canyon Block 641, with oil and gas export pipelines that connect to the host spar by means of steel catenary risers (SCRs). Each drill center is located approximately three (3) miles from the host spar and is connected to the spar with two (2) nine-inch production flowlines and one (1) six-inch test flowline as well as two (2) control umbilicals. Production from each drill center is gathered in a manifold and transported back to the spar through the above flowlines. The wells and manifold are controlled with the previously described control umbilicals. Produced oil and gas are then exported through 20” oil and 16” gas export pipelines.

CTI personnel were integrated into Chevron’s Tahiti Project Installation Team to provide significant engineering, project management, and construction management support in performing the following functions:

• Interfaced with the Tahiti FEED contractor with respect to constructability of design for the entire subsea scope of work
• Developed detailed cost estimates, contracting strategies and project execution plans to be presented and utilized for project sanction
• Evaluated various types of SCR pull-in and hang-off systems
• Assisted with the development of tender documents for the procurement of key project materials

• Developed the tender documents, evaluated proposals and negotiated contracts for the onshore fabrication and offshore construction of the Tahiti Project subsea scopes of work, including the following:
• Onshore Scopes
• Flowline anti-corrosion and thermal insulation coatings
• SCR pipe end machining / matching
• Multi-jointing of flowline and SCR pipe
• Pipeline End Termination (PLET) fabrication
• Flowline jumper fabrication
• PLET suction pile foundation fabrication
• Offshore Scopes
• Flowline and manifold installation
• Umbilical, jumper and flying lead installation
• PLET suction pile foundation installation
• SCR spool piece installation utilizing saturation diving
• Pre-commissioning of the flowlines and umbilicals
• ROV support vessel construction activities

• Provided project management for all of the above scopes of work
• Provided the offshore interface manager to manage SIMOPs activities for all offshore installation activities concurrent with the Tahiti topsides hook-up and commissioning (HUC) activities
• Additionally, CTI provided inspection personnel for much of the onshore fabrication and the offshore installation scopes of work. These inspection services included the following:
• Onshore application of flowline corrosion coating; pipe sorting and pipe end machining and matching of flowline SCR pipe
• Inspection services for the fabrication and testing of the SCR pull-in equipment
• Welding and field joint coating inspection services for:
• Onshore multi-jointing of all flowline and SCR pipe
• PLET fabrication
• Flowline jumper fabrication
• Welding, automatic ultrasonic testing and coating inspection services during the offshore installation of the flowlines and SCRs
• Offshore inspection services for the installation, field-testing and removal of the SCR pull-in equipment
• Installation inspection services for the umbilical, jumper and flying lead installation scopes of work
• Installation inspection services for the spar hull and mooring installation scopes of work