초록 ▼

A method and apparatus for installing conductor casing for offshore oil wells. In the preferred embodiment of the present invention, a retrievable suction embedment chamber assembly drives a string of casing into the seafloor using hydrostatic pressure by releasably forming a seal around the casing

A method and apparatus for installing conductor casing for offshore oil wells. In the preferred embodiment of the present invention, a retrievable suction embedment chamber assembly drives a string of casing into the seafloor using hydrostatic pressure by releasably forming a seal around the casing to be driven and using a pump to lower the pressure inside the chamber. The assembly may then be flooded with seawater, released from the casing, then repositioned at a higher point on the casing, and the embedment process repeated. The assembly may also be used to embed several subsequent strings of casing in series.

대표청구항 ▼

A method and apparatus for installing conductor casing for offshore oil wells. In the preferred embodiment of the present invention, a retrievable suction embedment chamber assembly drives a string of casing into the seafloor using hydrostatic pressure by releasably forming a seal around the casing

A method and apparatus for installing conductor casing for offshore oil wells. In the preferred embodiment of the present invention, a retrievable suction embedment chamber assembly drives a string of casing into the seafloor using hydrostatic pressure by releasably forming a seal around the casing to be driven and using a pump to lower the pressure inside the chamber. The assembly may then be flooded with seawater, released from the casing, then repositioned at a higher point on the casing, and the embedment process repeated. The assembly may also be used to embed several subsequent strings of casing in series. ch tends to cause the pressure rolls 2 to be projected toward each other. A shaft 16 is disposed in spaced parallel relation to the pressure roll 2. Extension arms 17 are formed in the housings of the bearings 3. The extension arms 17 are connected to the shaft 16, to thereby enable the shaft 16 to support the bearings 3. The housings of the bearings 3 are capable of pivotal movement about the axis of the shaft 16 and also capable of pivotal movement about the axis perpendicular to the axis of the shaft 16.