5 6 deepwater equipment systems

Deepwater Equipment Systems At the end of the lecture,you will be able to: 1.. Appreciate the various type of equipment systems used in deepwater operations... Heave Compensation• As ri

Deepwater Equipment

Systems

At the end of the lecture,you will be able to:

1 Appreciate the various type of equipment

systems used in deepwater operations

Offshore Rig Equipment

– Remote operated vehicles (ROV’s)

– Wellheads, templates, manifolds

Work Boats

Work Boats

Tubular and

Riser

Handling

Equipment

Heave Compensation

• As rig floats up and

down to to sea and

integral with hoisting

equipment (as shown)

Riser Handling

Marine Riser & BOPs

Mooring Strategies

Positioning

Mud System

Solids Control

• An ROV(remotely operated

vehicle) is used subsea when the

water depth is beyond diver depth

• The ROV is controlled from the

surface through an umbilical

• The ROV is normally equipped

with several TV cameras with

strong camera lights, one (1)

manipulator arm, and one (1)

grabber arm

ROV Example

Subsea Wellheads

The subsea wellhead is the foundation

for all subsea wells It provides

• a high pressure containment for the well

pressure

• landing/sealing/locking areas for casing

hangers and tubing hanger (Vertical Tree)

• structural rigidity to withstand tensional loads

and bending loads from risers and flowlines.

• a locking profile and seal area for the BOP and

tree hydraulic connectors

Conventional

Subsea Trees

The Subsea Tree System

controls and contains the

production flow at the mudline

Subsea Tree

• The subsea tree consists of an

assembly of valves that controls the

flow of produced media (oil/gas)

•The valves are mostly controlled

remotely (open/close)

•Also facilitates vertical access to

the production bore to perform well

maintenance and injection of

chemicals to prevent hydrates,

corrosion and wax build-up

Subsea trees

Subsea BOP

The BOP (Blowout Preventer)

rapidly seals off around the

drillstring and/or across the empty

hole to contain downhole pressures

•On floating rigs, the BOP is attached to

the top of the surface casing at the seabed.

•A subsea BOP contains extra control

systems than a surface BOP

•The BOP must be capable of latching to

and releasing from the wellhead

Subsea BOP

Now, you should be able to:

1 Appreciate the various type of equipment

systems used in deepwater operations

Deepwater Equipment

Systems