Gulf of Mexico Blocks GB 200, 215 & 216

Landmark: One of FMC Technologies’ First Horizontal Trees Completed in the Gulf of Mexico

Project Overview

• Contract Award: 1998 (Ph I)
• 2003 (Ph II)
• Sales: Houston, Texas
• Fabrication: Houston, Texas
• Service Base: Houston, Texas
• Host Type: Platform
• Contract Type: EPC

Project Characteristics

• No. Trees: 2 (Ph I)
• 1 (Ph II - Refurbished)
• Water Depth: 440 m (1,440 ft)
• Tree Type: Horizontal
• Tree Pressure: 10,000 psi
• Tree Bore Size: 4"x2"
• Hydrocarbon: Oil/Gas

Project Ownership

• Amerada Hess 50%
• Kerr-McGee 50%

Scope of Work

• Two (2) horizontal 4"x2" 10,000 psi subsea trees
• One (1) subsea tree refurbishment
• Electro-hydraulic production control system
• SCSSV control line operated at 10,000 psi maximum working pressure
• Workover controls are direct hydraulic
• Function crossover from production to workover mode by ROV change out of the production hydraulic jumper plate with a workover umbilical using ROV flying leads
• System integration testing, offshore installation support and technical assistance

Comments

This deepwater Gulf of Mexico project features two (2) subsea horizontal trees located at a water depth of 440 m (1,440 ft). Producing at high pressure, the subsea trees are rated at 10,000 psi and 120 ⁰C (2500 F). The first well, No. 4, is located 6 km (4 miles) from Amerada Hess’s GB 260 platform. The second well, No. 2, is offset from well No. 4 an additional 1.1 km (0.7 miles). A bottom-towed flowline bundle provides tieback to the Baldpate compliant tower via a bundled SCR.

The horizontal subsea completion systems feature diverless installation and intervention, 20-year design life. Trim-Clad® seat pockets, an insert retrievable choke, tree PT sensors, two (2) SCSSV lines, two (2) downhole chemical injection lines and one (1) tree chemical injection line.