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DCU

Dry Completion Unit - A floating facility carrying surface completed wells, i.e. the xmas trees are located above the surface of the sea, on the floater, as opposed to the seabed. The rigid pipes (tubing, casing etc.) that link the trees to the wells require high tension to avoid buckling. A key feature of a DCU is therefore the need for constant tension to compensate for the floating heave motion. Generally, a DCU also carries basic drilling equipment to allow down-hole intervention on a tender assist mode. It can also feature a full drilling capability.

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DRY COMPLETION UNIT

A floating facility carrying surface completed wells, i.e. the xmas trees are located above the surface of the sea, on the floater, as opposed to the seabed.
The rigid pipes (tubing, casing etc.) that link the trees to the wells require high tension to avoid buckling. A key feature of a DCU is therefore the need for constant tension to compensate for the floating heave motion. Generally, a DCU also carries basic drilling equipment to allow down-hole intervention on a tender assist mode. It can also feature a full drilling capability.
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