What is the tensioner?

The tensioner is a device used on a drilling platform or set, especially floating sets in the ocean, to support risers used for drilling and oil supply to the set. Risers connect a drilling platform with a seabed and are usually a series of connected pipes. The drilling platform may be relatively stable during drilling, but the storm or high sea may cause the set to move due to the wave action. Damage could lead if the risers were strictly connected to the drill platform, so they are supported by a tensioning system that can maintain the weight of the riser and allow movement separately from the platform movements. The set can also swim freely and be maintained on site using global positioning systems that use satellites and receiver to determine the location and engines of the set. The voltage of the foot is pulled by the fleet by the grit, which uses the stress tanks filled with air and water to maintain a certain floating height above the water. Stress systems can be controlled to maintainAle constant voltage on the drill legs, but there is no way to use the load to control the riser voltage.

Near the top of the riser is a set called a slide. This system is attached to the riser pipes to provide the grasping point for the tensioner. The ascending stroke of the voltage is provided either by cables or rods connected to a group of hydraulic ram or pistons that push or push up against the weight of the riser. Electronic controls maintain a constant draft when the drilling set moves due to waves or weather.

Tension systems can be operated with air pressure or hydraulic oil pressure. A series of tanks called batteries hold air or liquid under pressure and supplies them as needed to maintain the necessary tension of the riser. Emergency disconnecting devices are installed that allow a quick separation of the tensioner pressure system from the risers in the caseThe fact that the set moves violently or must be moved from the drilling area due to storms. The tensioners are installed with extra or excess units, so the riser is protected even if the individual voltage fails or needs maintenance.

At the end of the 20th century, designers began to experiment with rigid but flexible elastomers or rubber materials that could be associated with risers and ensure tension and movement without the need for hydraulic systems. The advantage of elastomeric tensioners is the minimum movable parts and expensive hydraulic systems are not necessary. These systems work best where the drilling of the drill is less, because it is necessary to add a section of the section where further movement is needed, which could be difficult to drill the ocean.