Vehop CALM
Scope of Work
SOFEC designed and constructed a CALM system located in 25m water depth to export diluted or refined crude oil and gas oil products to the 96,920 dwt tanker and import naphtha diluent from tankers to shore.
General Description
| Client Name: | Petrozuata |
| Contract Award: | November 1997 |
| Installation Date: | August 1998 |
| Application: | Export/Import Gas, Refined Oil and Naphtha Transfer |
Project Specifications
| Water Depth: | 25m (82ft) |
| Tanker Size: | 96,920 dwt |
| Dimension: | 12.5mØ x 5.3m |
| Floating Hose: | 3 x 20-in. |
| Underbuoy Hose: | 3 x 20-in. Chinese Lantern |
| Hawser System: | 15-in. Single grommet |
| Anchor Leg System: | 6 x 3.375-in. Grade 3 |
| Anchor System: | 36-in. Ø Piles |
Design Environmental Criteria
Operational
| Significant Wave Height: | 4.6m (15ft) |
| Wind Velocity: | 20m/s (39 knots) |
| Surface Current: | 1.07m/s (2.1 knot) |
Survival
| Significant Wave Height: | 8.6m (28ft) |
| Wind Velocity: | 20m/s (39 knots) |
| Surface Current: | 0.6m/s (1 knot) |
Comments
Petrozuata produces heavy oil from onshore Eastern Venezuela oil fields and pipelines it to a facility (Jose Terminal) on the northern coast of Venezuela, near Puerto La Cruz. In Jose, the heavy oil is diluted to export through a monobuoy installed approximately 8km offshore. The buoy design includes a two-path swivel with triple floating hoselines. Two marine pipelines (36-in. and 24-in.) connect the buoy to the onshore pump station.