Barge drilling rigs are mobile drilling platforms that are submersible and are built to work in seven to 20 feet of water. They are towed by tugboats to the drill site with the derrick lying down. The lower hull is then submerged by flooding compartments until it rests on the river or sea floor. The derrick is then raised and drilling operations are conducted with the barge resting on the bottom.
Vessel that transports crude oil or other petroleum products
Unit of pressure
A tank intended to be filled with sea water to keep floating equipment stable
A flow-control device employing a ball with a rotating mechanism to open or close the tubing medium. A device used to restrict fluid flow to one direction
A spherical object used to pump down the drill string or tubing to trip, release, or otherwise operate certain hydraulic-type tools.
Balancing delivery of gas in the transmission system with the quantities taken from it. Balancing is achieved through delivery and/or withdrawing gas from the pipeline and is done daily, monthly or seasonally
