CTI engineering and construction management personnel were contracted by Chevron to perform conceptual and pre-FEED pipeline design for the oil and gas export pipelines associated with the development of Chevron's Walker Ridge prospect. The proposed export pipelines will connect floating production facilities to existing pipelines or facilities to further transport oil and gas production to shore. The floating production facilities will be located approximately 250 miles offshore in the Gulf of Mexico in approximately 7,000 feet of water.

The conceptual studies performed by CTI included the following:

• Definition of pipeline and riser sizing (based on pipeline length, operational flow rates and fluid properties) and associated hydraulic analysis
• Selection of pipeline maximum allowable operating pressures, including any tie-in limitations on flow rates and pressures
• Optimization of pipeline wall thickness, based on internal/external pressures, pipe collapse under external pressure and installation loadings
• Pipeline route optimization
• Pipeline component and materials evaluation
• Cost estimates for multiple pipeline routing and sizing options
• Recommendations of additional studies and/or evaluations to be carried out

The pre-FEED pipeline design scope of work included engineering design and evaluations following from the conceptual studies and initially addressed both the gas and oil export pipelines. Due to the large number of destination options, production profiles, routes and pipeline lengths, significant engineering resources were utilized by CTI over a period of two and a half years. Engineering pre-FEED deliverables included:

• Over 500 hydraulic runs covering up to 50 different options
• Generation of 54 technical reports, technical specifications, multiple route studies, and technical input to three major bid packages. These major bid packages included a third party Request For Quotation for pipeline engineering and construction, the export pipeline FEED scope of work and the export pipeline route survey.
• Each bid package included the relevant specifications and scope of work
• CTI conducted the technical bid evaluations for these bid packages and provided technical support during subsequent clarification meetings and pre-award meetings with bidders
• Preliminary on-bottom stability analysis, preliminary pipeline span analysis, pipeline span predictions and materials evaluations
• Over 300 detailed cost estimates were issued during the pre-FEED scope of work covering most of the export pipeline routing and diameter options

CTI also performed detailed studies to provide Chevron with:

• Pipeline installation contractor capabilities and availability
• Pipe mill capabilities (for both DSAW and SMLS pipe)
• Pre-commissioning plans and a pipeline plug-and-abandonment plan
• Technical input to dynamic surge analysis and HIPPS studies

CTI engineering personnel have been contracted by Chevron to provide support during FEED Phase of the JSM Oil Export Pipeline. The FEED pipeline design scope of work included engineering design and evaluations from the FEED contractor for oil export pipelines. Some of the areas in which CTI personnel were involved are the following:

• Pipeline Right-of-Way application submittal
• Pipeline Specification reviews
• RFQ package compilation and distribution
• Commercial hydraulic runs
• Pipeline Geotechnical and Geophysical Survey
• Detail Design Scope of Work
• Pipeline Route determination
• Overall Pipeline Design
• Span Analysis Methodology