摘要:
The invention relates to a jack-up rig. The inventive rig would work like a conventional jack-up rig while in open water with the hull jacked up out of the water. However, in the event of ice conditions, the hull is lowered into the water into an ice defensive configuration. The hull is specifically shaped with a lower portion that is an ice-bending surface to bend and break up ice that comes in contact with the hull while in the ice defensive configuration. Furthermore, the jack-up rig comprises at least two derricks.
摘要:
The invention relates to an ice worthy jack-up rig that may extend the drilling season in shallow water off shore Arctic or ice prone locations. The inventive rig would work like a conventional jack-up rig while in open water with the hull jacked up out of the water. However, in the event of ice conditions, the hull is lowered into the water into an ice defensive configuration. The hull is specifically shaped with a lower portion that is an ice-bending surface to bend and break up ice that comes in contact with the hull while in the ice defensive configuration. Furthermore, the ice worthy jack-up rig that comprises at least two derricks so as to double the exploration efficiency and lower the relating costs.
摘要:
The present invention provides a skirted foundation that can be used in a jack-up rig for providing enhanced bearing capacity. The skirted foundation comprises a spudcan footing having an upper part and a base, wherein the upper part and the base are coupled at their peripherals to form an outer edge, wherein both the upper part and the base have a flat or conical configuration, and wherein the upper part supports one leg of a jack-up rig, and the base has a flat bottom or downward slope, and a skirt having an upper end being integrally coupled to the spudcan footing and downwardly projected to encircle the base and a lower end for penetrating seabed, wherein the skirt comprises a plurality of circumferential openings adjacent to the base of the spudcan footing and located within the top half of the skirt height.
摘要:
The present invention describes an offshore foundation system (10,10a,10b) that is operable for preloading after self-weight installation on a seabed without relying on additional or external ballasts. The foundation system (10,10a,10b) is also operable for extraction by reversing the process of preload operation. In one embodiment, the foundation system (10) comprises a reaction base (20) and suction compartment (60). In another, the foundation system (10a,10b) comprises a plurality of units of reaction base (20) and suction compartments (60), with the units being connected by bridging structures (21). In yet another, the foundation system comprises a reaction base (20) and a plurality of suction compartments (60). A closed-top of the suction compartment (60) projects above the reaction base (20) so that, in use, there is a gap h between a top of a soil plug inside a suction compartment (60) and its closed-top.
摘要:
A method of protecting and repairing surfaces of structures using hand-laid epoxy and glass-aramid fabric composite is taught. Unlike the use of such composites as structural members, the present invention makes use of such composites in novel and inventive applications. Also unlike other methods, the invention is carefully hand-laid to conform closely to any irregular surfaces on the structure to be protected or repaired. The product of the method of the present invention is tougher than conventional paints and coatings and lasts significantly longer than conventional paints and coatings.
摘要:
A vehicle for use in arctic environments, the vehicle comprising a hull for accommodating people, and a pair of rotatable propulsion screws connected to the hull for propelling the vehicle on water, ice, snow and land. Each propulsion screw comprises a shaft having at least one blade helically disposed therearound.
摘要:
The present invention describes an extraction system (100,100a) for expediting removal of a footing (105) that is embedded in a seabed or marine floor. The extraction system provides a supply of pressurized fluid (140) to a chamber from where the pressurized fluid exudes through porous members (122,122a, etc) located on the base (114) of the footing (105). When an uplifting force is applied to the footing (105) for its removal, the pressurized fluid (140) exudes out through the porous member (122,122a, etc.) to compensate or reduce suction induced beneath the footing, without fluidizing or channeling of the seabed soil, thereby expediting removal of the footing (105).
摘要:
The present invention describes an extraction system (100,100a) for expediting removal of a footing (105) that is embedded in a seabed or marine floor. The extraction system provides a supply of pressurized fluid (140) to a chamber from where the pressurized fluid exudes through porous members (122,122a, etc) located on the base (114) of the footing (105). When an uplifting force is applied to the footing (105) for its removal, the pressurized fluid (140) exudes out through the porous member (122,122a, etc.) to compensate or reduce suction induced beneath the footing, without fluidizing or channeling of the seabed soil, thereby expediting removal of the footing (105).
摘要:
The present invention provides a skirted foundation that can be used in a jack-up rig for providing enhanced bearing capacity. The skirted foundation comprises a spudcan footing having an upper part and a base, wherein the upper part and the base are coupled at their peripherals to form an outer edge, wherein both the upper part and the base have a flat or conical configuration, and wherein the upper part supports one leg of a jack-up rig, and the base has a flat bottom or downward slope, and a skirt having an upper end being integrally coupled to the spudcan footing and downwardly projected to encircle the base and a lower end for penetrating seabed, wherein the skirt comprises a plurality of circumferential openings adjacent to the base of the spudcan footing and located within the top half of the skirt height.
摘要:
An apparatus for soil testing for a jack-up rig, the apparatus comprising a soil testing device integrated with a leg of the jack-up rig, the leg of the jack-up rig having a footing, an opening in the footing for allowing passage of an active portion of the soil testing device therethrough to obtain soil data from a seabed beneath the footing, and a retrieval assembly for retrieving the soil testing device.