Abstract: An apparatus for causing an indication of a connector of a subsea structure has a lifting structure pivotally affixed adjacent an upper end of the subsea structure, an extension extending outwardly adjacent a bottom of the subsea structure and an inclination tool cooperative with the extension so as to move the lower end of the subsea structure in an angular direction offset from horizontal. The inclination tool has a ratchet mechanism cooperative with a line extending from the lifting structure. Hydraulic actuators serve to draw the ratchet mechanism upwardly in a direction toward the lifting structure.

Abstract: A method of protecting an integrity of a wellhead includes the steps of affixing a subsea structure to the wellhead, installing a plurality of piles into the subsea floor adjacent the wellhead, extending lines between the subsea structure and the piles, and tensioning the lines such that each of the lines applies tension to the subsea structure. The plurality of lines are secured to an upper portion of the subsea structure. The tensioning mechanism has a tensioning cylinder having a ratchet rod extending therefrom. The ratchet rod is connected to either the line, the pile or the subsea structure.

Abstract: A capping stack for use with a subsea well has a body with a flow passageway extending therethrough, a first bore having one end opening to an outlet end of the flow passageway, a second bore opening to the outlet end of the flow passageway, a first flowline affixed to the first bore and extending upwardly therefrom, a second flowline affixed to the second bore and extending upwardly therefrom, a first valve cooperative with the first flowline so as to be movable between an open position and a closed position, and a second valve cooperative the second flowline so as to be movable between an open position and a closed position. The inlet end of the flow passageway is suitable for connection to a blowout preventer or to a wellhead of a subsea well. Each of the bores extends upwardly at an acute angle to vertical from the flow passageway.

Abstract: A system for tethering a subsea wellhead including a plurality of anchors disposed about the subsea BOP and secured to the sea floor. In addition, the system includes a plurality of tensioning systems. One tensioning system is coupled to an upper end of each anchor. Further, a plurality of flexible tension members. Each tension member extends from a first end coupled to the subsea wellhead to a second end coupled to one of the tensioning systems. Each tensioning system is configured to apply a tensile preload to one of the tension members.

Abstract: A system for tethering a subsea blowout preventer (BOP) includes a plurality of anchors disposed about the subsea BOP and secured to the sea floor. In addition, the system includes a plurality of tensioning systems. One tensioning system is coupled to an upper end of each anchor. Further, the system includes a plurality of flexible tension members. Each tension member extends from a first end coupled to the subsea BOP to a second end coupled to one of the tensioning systems. Each tensioning system is configured to apply a tensile preload to one of the tension members.