What is compliant tower platform?
Compliant tower platform is a fixed rig structure normally used for the offshore production of oil or gas. The platform consists of narrow, flexible (compliant) towers and a piled foundation supporting a conventional deck for drilling and production operations.
How does a compliant tower work?
Compliant towers are similar to fixed platforms in that they have a steel tubular jacket that is used to support the surface facilities. Unlike fixed platforms, compliant towers yield to the water and wind movements in a manner similar to floating structures.
Where is the Petronius platform?
The Petronius field is located in Viosca Knoll, block 786, approximately 130 miles (208km) south-east of New Orleans. It lies in water depths of 1754ft (535m). The field was discovered in 1995 and contains estimated recoverable reserves of 80 million to 100 million barrels of oil equivalent.
What is the Tower of the oil rig?
In the petroleum industry, a derrick consisting of a framework or tower of wood or steel is erected over the deep drill holes of oil wells to support the tackle for boring, to raise and lower the drilling tools in the well, and to insert and remove the well casing…
How does a tension leg platform work?
A Tension Leg Platform (TLP) is a vertically moored compliant platform. The floating platform with its excess buoyancy is vertically moored by taut mooring lines called tendons (or tethers). The structure is vertically restrained precluding motions vertically (heave) and rotationally (pitch and roll).
Who owns Petronius oil rig?
Most buildings are kept to within 0.5% of height in order to have occupants not feel uneasy during periods of movement. Construction began in 1997 by J Ray McDermott with the seabed mooring system. The contract for the platform was budgeted at $200 million with total costs of around $500 million.
How much does an oil rig cost?
They usually cost a minimum of US$200 million and upwards. This depends on the level of drilling & pipe handling equipment you want to have on the drill-floor (and which shipyard is building the rig).
What is Sea Star platform?
The SeaStar platform is a small TLP with a single surface-piercing column. The tension-leg mooring system suppresses nearly all vertical motions. This type of mooring configuration makes it possible to have a single, stable column piercing the surface of the water with a small water plane area.
Would you call TLP tendons mooring lines?
A Tension Leg Platform (TLP) is a vertically moored compliant platform. The floating platform with its excess buoyancy is vertically moored by taut mooring lines called tendons (or tethers).
How is a compliant tower different from a fixed platform?
Unlike fixed platforms, compliant towers yield to the water and wind movements in a manner similar to floating structures. Like fixed platforms, they are secured to the seafloor with piles. The jacket of a compliant tower has smaller dimensions than those of a fixed platform and may consist of two or more sections.
How big is the compliant tower in feet?
The multi-deck topsides are approximately 210-by-140 ft and hold 21 well slots, and the entire structure weighs around 43,000 tons. The platform is situated to exploit the Petronius field, discovered in 1995 in Viosca Knoll (block VK 786 and the seabed is 1754 ft below the platform.
What kind of rig is a compliant tower?
Compliant Tower. A compliant tower (CT) is a fixed rig structure normally used for the offshore production of oil or gas.
How are compliant towers used in the gom?
There are only three compliant towers (CTs) in the GoM, and as their name suggests, the structures are compliant in the sense that they do not attempt to resist all environmental lateral forces through their piling alone. Instead, the structures are designed to permit limited movement with the waves.