Submersible Drilling Rig
Definition - What does Submersible Drilling Rig mean?
A Submersible Drilling Rig is a nautical vessel that is mobile in nature and can be floated to a mobile location to perform offshore drilling activities. A Submersible Drilling Rig, also known as a mobile offshore drilling unit, is primarily used as a mobile drilling structure. This drilling rig type is established with the help of structures similar to pontoon that descend below the sea surface. It is often referred as a submersible in the sea.
Petropedia explains Submersible Drilling Rig
Drilling is an important process as it leads to the easy access of an oil reservoir. Without carrying out the drilling process, oil and gas cannot be extracted from an oil field. To assist the drilling process, a drilling rig is setup. When offshore drilling activities are to be performed in the sea, a Submersible Drilling Rig is installed.
Being a maritime vessel, a Submersible Drilling Rig can be easily floated to any location in the sea and descended to the sea floor using pontoon-like structures. These structures support the rig and it rests on its anchor. The floating design as well as the availability of the pontoon-like structures provides mobility to the rig. Due to the fact that a Submersible Drilling Rig rests on the sea floor while performing offshore drilling activities, it must operate on relatively shallow water.