| 摘要 |
The invention relates to an off-shore oil or gas unit (1) for the production of oil or gas for providing access to at least one well head conductor or riser (14), the unit having an upper topside (8) part and a lower base or jacket (2) part which are constructed as separate parts and transported to the well side as separate parts and assembled together at the well site, the upper topside part (8) comprising a main platform (4) and a drilling platform (13) arranged above the main platform and said top-side part (8) also comprising a work-over deck (21) arranged above the Christmas trees (16) for the operation and location of coiled tubing (30), or other work-over related equipment, and the jacket part (2) comprising a plurality of generally vertical jacket legs (5) connected together by a plurality of horizontal jacket members (6), the unit also comprises an in-jacket platform (10) provided below the first main platform (4) and arranged within the jacket (2). The in-jacket platform (10) comprises the tie-backs (12) for the conductor or risers (14) and access to the shut-down valves, as well as a means fixed connections to the caissons (20) avoiding the time consuming caisson connection during assembly of the unit at the well head location. |
