Floating cranes and derrick barges Fixed platforms Jack-up rigs Semi-submersible drilling rigs Submersible rigs Non-specialized projects

Business location


LA MURALLA SEMISUBMERSIBLE FLOATING DRILLING UNIT

PURPOSE

Exploratory drilling of 6500-m oil/gas wells in sea depths of up to 300 m in the Gulf of Mexico


MAIN PARTICULARS

The present non-propelled semisubmersible drilling unit is formed by two lower pontoons, six stabilized columns and an upper hull incorporating living, service and occupational spaces.

Main dimensions (length x breadth x height), m:

  • lower pontoons 92.0 x 15.0 x 6.0
  • upper hull 62.4 x 49.2 x 6.0

Displacement, t/midlength draft, m:

  • lightship 11600/4.75
  • transit 13800/5.60
  • operational (drilling) 19770/14.30

The anchor passive position keeping system consists of eight 18-t anchors.

Power plant 5350 kW; 400 V a.c.

Shipboard/process stores, t:

  • transit condition 700/965
  • operating condition 1370/2085

Endurance, days 30