| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Blowout preventer | Mining | 1: One of several valves installed at the wellhead to prevent the escape of pressure either in the annular space between the casing and drill pipe or in open hole (i.e., hole with no drill pipe) during drilling completion operations. Blowout preventers on land rigs are located beneath the rig at the land's surface; on jack-up or platform rigs, at the water's surface; and on floating offshore rigs, on the seafloor. (references) | |
| 2: A special assembly of heavy-duty valves, commonly called the BOP stack, installed on top of a well which can be closed to prevent high-pressure oil or gas from escaping (a blowout) from the well hole during drilling operations. (references) | |||
| Blowout preventer control panel | Mining | Controls, usually located near the driller's position on the rig floor, that are manipulated to open and close the blowout preventers. See blowout preventer. (references) | |
| Blowout preventer control unit | Mining | A device that stores hydraulic fluid under pressure in special containers and provides a method to open and close the blowout preventers quickly and reliably. Usually, compressed air and hydraulic pressure provide the opening and closing force in the unit. See blowout preventer. (references) | |
| Blowout preventer drill | Mining | A training procedure to determine that rig crews are completely familiar with correct operating practices to be followed in the use of blowout prevention equipment. A "dry run" of blowout preventative action. (references) | |
| Blowout preventer operating and control system | Mining | The assembly of pumps, valves, lines, accumulators, and other items necessary to open and close the blowout preventer equipment. Also called closing unit. (references) | |
| Blowout preventer rams | Mining | The closing and sealing components of a preventer, like the gate in a gate valve. (references) | |
| Blowout preventer stack | Mining | 1: Equipment installed at an oil well-head for the purpose of controlling pressures in the annular space between the casing and drill pipe, or in an open hole during drilling operations. Source: European Union. (references) | |
| 2: The assembly of well-control equipment including preventers, spools, valves, and nipples connected to the top of the wellhead. (references) | |||
| Dart-type inside blowout preventer | Mining | A dart-shaped drill pipe inside blowout preventer installed on top of the drill stem when the well is kicking through the drill stem. It is stabbed in open then closed against pressure. (references) | |
| Inside blowout preventer | Mining | Any valve installed in the drill stem to prevent a blowout through the stem. Mud can be pumped in but flow back up the stem is prevented. Also called an internal blowout preventer. (references) | |
| Ram blowout preventer | Mining | A blowout preventer that uses rams to seal off pressure on a hole that is with or without pipe. Also called a ram preventer. (references) | |
| Rod blowout preventer | Mining | A ram device used to close the annular space around the polished rod or sucker rod in a pumping well. (references) | |
| Subsea blowout preventer | Mining | A blowout preventer placed on the seafloor for use by a floating offshore drilling rig. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
