CTI engineering and project management personnel were contracted to perform pre-FEED pipeline design work for the oil export pipeline associated with the development of Chevron's Big Foot prospect. The proposed oil export pipeline will connect a floating production platform to existing pipelines or facilities to further transport production to shore. The floating production platform will be located in Walker Ridge Block 29 in the Gulf of Mexico in approximately 5,220 feet of water. The pipeline will terminate at the Amberjack subsea tie-in location in Green Canyon Block 597 at a water depth of 4,195 feet. The proposed 16-in or 20-in oil export pipeline will be approximately 39 miles in length.

The primary objectives of the work performed by CTI during pre-FEED activities included:

• The development of preliminary export pipeline routing options
• The development of a preliminary design philosophy and the selection and optimization of final pipeline diameter, wall thickness and maximum allowable operation pressures
• The performance of pipeline hydraulic analyses for multiple pipeline options, including performing viscosity sensitivity studies
• The preparation of cost estimates for multiple pipeline options

To meet the above objectives, the following work was performed:

• Hydraulic Analysis - CTI engineering personnel analyzed dozens of models covering numerous scenarios. Options evaluated included multiple sources, multiple destinations, various fluid properties over a wide range of MAOP, and a wide range of production profiles. Options also included steel catenary risers and subsea tie-ins over a range of water depths from 5,700 to 4,195 feet. Sensitivity analysis, primarily on viscosity, was an integral part of the above work effort and included fluid property mixes from different producing areas.
• Technical Reports - A total of 21 technical reports were issued, covering a diverse range of subjects. Some of the more significant reports included pigging studies, span analysis, plug and abandonment plans, collet connector capabilities, and evaluation of line pipe grades.
• Cost Estimates - Over 80 detailed cost estimates were issued, along with a Basis of Estimate document which defined the included costs and their origins.