Page 40 - 6634

Production module (containing the oil/gas/water separation and

treatment systems and other piping and control systems and valves for safe

production, metering and transfer of the produced liquids and gas to the

offloading system).

A compression module may be added, if gas compression for injection to
the formation and/or high-pressure gas pumping to shore is needed. Since

compression may be needed at later production stages, this module may be

installed on the deck at a later date or on a nearby separate platform

(generally bridge connected to the deck). Similarly, water injection and

pumping modules may be added if these functions are needed at later field

development stages.

Jacket/Tower - in addition to providing support for the deck, jacket (may

also be called steel template or the tower) provides support for conductors and

other substructures such as boat landings, barge bumpers, risers, sumps, j-tubes,

walkways, mud-mats, etc.

The major jacket structure components are:

- Jacket legs

- Braces (vertical, horizontal and diagonal),

- Joints, which are the intersection points of legs and braces. Bracing stubs

and cans may be provided to reduce stresses and improve the ductile behaviour of

joints,

- Launch runners and trusses, if the jacket will be transported and launched to

sea from a launch barge using skid and tilting beams,

- Skirt pile sleeves and braces (if skirt piles are needed),

- Appurtenances (boat landings, barge bumpers, conductor bracing and

guides, risers, clamps, grout and flooding lines, j-tubes, walkways, mud-mats, etc.).

Foundation - Piles driven through the jacket legs or skirt pile sleeves fix the

jacket to the seabed.

40