Offshore Equipment

Drilling Barges:
Barges are small and compact drilling platform, suitable for shallow water operations, for initial prospecting of oil or regular deepening of well head. They are more mobile and technically less complicated to operate and maneuver. The hull structure is mostly rectangular in shape without self-propellant. They are moored to bed either in sea, river catchment area or in a lake, and can drill up to a depth of 2000m to 5000m.
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A typical Barge model
Barges contain the following system/equipment:
– Drilling platform supported by the cantilever structure on movable substructure,
– Derrick structure along with draw works,
– Pipe handling system,
– Power plant,
– BOP Equipment:  diverter, stack and control system,
– Mud handling and Treatment,
– Cranes,
– Storage area to handle bulk material like cement, drilling water, fuel for generator and Mud tanks,
– Accommodations for Staff: normally for about 70 to 100 persons with helideck.

Jack-Up rigs:
Unlike barges, which is suitable for near shore operation with calm weather, the jack-up rigs can operate in harsh weather conditions in violate sea. The high tech rigs in a triangle shaped hull, supported by three legs can move up and down depending on water level in the sea. Due to stable mooring facility, they can operate at high speed to a depth of 8000m. Like barge, they are not self-propellant.

offshore2A typical jack-up rig

Jack-up rigs contain the following system/equipment:
– Drilling platform supported by the cantilever structure on movable substructure,
– Derrick structure along with draw works,
– Pipe handling system,
– Power plant,
– BOP Equipment:  diverter, stack and control system,
– Mud handling and Treatment,
– Cranes,
– Storage area to handle bulk material like cement, drilling water, fuel for generator and Mud tanks,
– Accommodations for Staff: normally for over 100 persons,
– Helideck on cantilever structure.
– Jack-up facility up to 200m

Semi-submersible:
These types of drilling rigs are capable of operating in deep sea to the depth of 3000m with high-tech dynamic positioning system to maintain its station or with a pre-laid mooring. The hull structure is normally consists of a platform with four legs and its drilling operation located at the center. Most of the equipment and systems are built around the legs with the support of cantilever. This configuration enhances the flexibility of operation of the rigs to carryout simultaneous activities thus, reducing the drilling time and cost of operation.

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Apart from standard equipment, stated in jack-up rigs, they have equipped with:
– State of the art drilling facilities can drill up to a depth of 10000m measured from subsoil level,
– Optimized hull structure facilitate in deep drilling at faster rate,
– Dynamic positioning system,
– Offline capability enhances the efficient and safe operation,
– Back-up facility for all main equipment  cut-down the down time and saves the operation cost,
– Can accommodate more than 150 crew members at a time.
CES for the past several years have associated with offshore partners in retrofitting and modernization of various Barges and Platform in the following areas:

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