Abstract: A lock plug (7A) is inserted into a plug installation position of an insertion hole (5a) of a tool stem (5) connected to a drill string (10), and when a fluid has flowed to the insertion hole (5a), a stopper (62) protrudes radially outward from a tool body (6) and is locked to a subsea wellhead (4) and an internal stopper (66) protrudes radially inward from the tool body (6) and is locked to the tool stem (5) in a lock state. An unlock plug is inserted into the plug installation position of the insertion hole (5a), and when the fluid has flowed into the insertion hole (5a), the stopper (62) is separated from the subsea wellhead (4) and the internal stopper (66) is separated from the tool stem (5) to release the lock state.

Abstract: The submarine drilling support system includes a first guide support part that has a ring shape, has a plurality of rollers of which roller axes are directed to a horizontal direction and is arranged along a circumferential direction going around a rotation support axis parallel to a vertical direction, and is provided to allow the drill pipe to be inserted through in the vertical direction; and a first rotation holding part that is configured to support the first guide support part so as to be rotatable in the circumferential direction. The pluralities of rollers are adjacent to each other in the circumferential direction and are arranged in a state where the drill pipe is able to insert through a space surrounded by the plurality of rollers.

Abstract: A lock plug (7A) is inserted into a plug installation position of an insertion hole (5a) of a tool stem (5) connected to a drill string (10), and when a fluid has flowed to the insertion hole (5a), a stopper (62) protrudes radially outward from a tool body (6) and is locked to a subsea wellhead (4) and an internal stopper (66) protrudes radially inward from the tool body (6) and is locked to the tool stem (5) in a lock state. An unlock plug is inserted into the plug installation position of the insertion hole (5a), and when the fluid has flowed into the insertion hole (5a), the stopper (62) is separated from the subsea wellhead (4) and the internal stopper (66) is separated from the tool stem (5) to release the lock state.

Abstract: A hang-off gimbal system is disclosed. The hang-off gimbal system comprises a gimbal assembly. The gimbal assembly includes a gimbal frame with a passage therethrough. A first gimbal module is disposed within the passage of the gimbal frame. The first gimbal module comprises a passage therethrough. A second gimbal module is disposed within the passage of the first gimbal module. The second gimbal module comprises a passage therethrough. The second gimbal module extends upwardly beyond the gimbal frame and first gimbal module. An adapter sleeve is disposed in the passage of the second gimbal module. The adapter sleeve comprises a passage therethrough. The adapter sleeve protrudes upwardly and protrudes above the second gimbal module.

Abstract: The submarine drilling support system includes a first guide support part that has a ring shape, has a plurality of rollers of which roller axes are directed to a horizontal direction and is arranged along a circumferential direction going around a rotation support axis parallel to a vertical direction, and is provided to allow the drill pipe to be inserted through in the vertical direction; and a first rotation holding part that is configured to support the first guide support part so as to be rotatable in the circumferential direction. The pluralities of rollers are adjacent to each other in the circumferential direction and are arranged in a state where the drill pipe is able to insert through a space surrounded by the plurality of rollers.

Abstract: A hang-off gimbal system is disclosed. The hang-off gimbal system comprises a gimbal assembly. The gimbal assembly includes a gimbal frame with a passage therethrough. A first gimbal module is disposed within the passage of the gimbal frame. The first gimbal module comprises a passage therethrough. A second gimbal module is disposed within the passage of the first gimbal module. The second gimbal module comprises a passage therethrough. The second gimbal module extends upwardly beyond the gimbal frame and first gimbal module. An adapter sleeve is disposed in the passage of the second gimbal module. The adapter sleeve comprises a passage therethrough. The adapter sleeve protrudes upwardly and protrudes above the second gimbal module.

Abstract: A wellhead plug and a method for using a wellhead plug are presented. The ahead plug includes a plug body having at least a locking module, multiple sealing members, and a threaded connection tool. The wellhead plug according to the present disclosure offers multiple advantages over existing technologies. For example, the device may serve duplex roles as a wellhead pressure plug and/or a connection test tool. The device may, for example, serve as a blowout preventer (BOP) connection test tool, as well as an emergency drill pipe hang off tool (EDPHOT). This Abstracts submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Abstract: A wellhead plug and a method for using a wellhead plug are presented. The ahead plug includes a plug body having at least a locking module, multiple sealing members, and a threaded connection tool. The wellhead plug according to the present disclosure offers multiple advantages over existing technologies. For example, the device may serve duplex roles as a wellhead pressure plug and/or a connection test tool. The device may, for example, serve as a blowout preventer (BOP) connection test tool, as well as an emergency drill pipe hang off tool (EDPHOT). This Abstracts submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Abstract: A retrievable bridge is provided which mounts to the top of a subsea tree to provide fluid communication between the production line of the subsea tree and a production flowline. The retrievable bridge mounts to the top of the subsea tree and preferably connects to a vertically oriented pipe of the production flowline. The retrievable bridge can be utilized to carry wear items such as chokes, subsea control modules, and flow meters which may require maintenance more often than other components of the subsea tree. By mounting these items along the flow passageway in the retrievable bridge the components are securely mounted and still available for maintenance/replacement without the need to remove the entire tree. In one embodiment, Intervention into the well is available without removing the retrievable bridge.

Abstract: A retrievable bridge is provided which mounts to the top of a subsea tree to provide fluid communication between the production line of the subsea tree and a production flowline. The retrievable bridge mounts to the top of the subsea tree and preferably connects to a vertically oriented pipe of the production flowline. The retrievable bridge can be utilized to carry wear items such as chokes, subsea control modules, and flow meters which may require maintenance more often than other components of the subsea tree. By mounting these items along the flow passageway in the retrievable bridge the components are securely mounted and still available for maintenance/replacement without the need to remove the entire tree. In one embodiment, Intervention into the well is available without removing the retrievable bridge. The subsea tree does not require and preferably does not have a connection to the production flowline except through the retrievable bridge.