Abstract: The invention relates to a protective device for preventing fluids, either gaseous or liquid, from escaping into a body of water in an unforeseen or uncontrolled manner, e.g. from a fault 14 in the bottom 15 of the body of water or from the defective riser 16 of a wellbore. The protective device has a dome-shaped membrane 12 that is impervious to the fluid. Further, it has individually navigable flotation devices 17 that are attached to the membrane 12 for the purpose of positioning and stabilizing the membrane 12. An outlet hose 102 for extracting the fluid is mounted on the membrane. The outlet hose also has individually navigable flotation devices 17 for positioning and stabilizing the outlet hose.

Abstract: A seal apparatus for closing a wellbore, the apparatus being universally deployable and capable of closing the wellbore even in the case of damage located beneath a present blowout preventer. The apparatus is based on the idea of introducing a seal into the wellbore in order to close it off to avoid damage from a rising fluid. For this purpose, the seal has at least one apron, or a capsule. An opening of the apron, or distending of the capsule, causes a non-positive and/or positive connection to be produced in respect to the wall of the wellbore such that the wellbore is closed.

Abstract: The invention relates to a protective device for preventing fluids, either gaseous or liquid, from escaping into a body of water in an unforeseen or uncontrolled manner, e.g. from a fault 14 in the bottom 15 of the body of water or from the defective riser 16 of a wellbore. The protective device has a dome-shaped membrane 12 that is impervious to the fluid. Further, it has individually navigable flotation devices 17 that are attached to the membrane 12 for the purpose of positioning and stabilizing the membrane 12. An outlet hose 102 for extracting the fluid is mounted on the membrane. The outlet hose also has individually navigable flotation devices 17 for positioning and stabilizing the outlet hose.