An Anti-collision Drilling Riser Lateral Constraint Device
A technology of restraint device and riser, which is applied in the direction of drill pipe, drilling equipment, drill pipe, etc., can solve the problems of large lateral deformation, collision between riser and platform moon pool, etc., so as to increase the contact area, improve operation safety, The effect of reducing damage
Active Publication Date: 2017-03-22
CHINA UNIV OF PETROLEUM (EAST CHINA)
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[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0018] Such as figure 1 As shown, the present invention mainly includes an upper anti-loosening flange 1, an upper spherical pressure ring 2, an upper elastic body 3, an outer body 4, an inner body 5, a rolling support device 6, a lower elastic body 7, a lower spherical pressure ring 8, a lower Anti-loosening flange 9, telescopic support 10 and catch 11.
[0019] Such as figure 1 , figure 2 As shown, the inner body 5 of the present invention is provided with a set of rolling support device installation holes 12 every 60° along the circumferential direction for installing the rolling support device 6 . The mounting holes 12 of the rolling bearing device are through holes symmetrically distributed up and down, and are equipped with key grooves to prevent the rolling bearing device 6 from rotating along its axial direction. Both the inner and outer si...
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The invention relates to an anti-collision drilling riser transverse restraining device. The anti-collision drilling riser transverse restraining device is characterized in that the device comprises an inner body, an elastic body, a spherical-face pressing ring, anti-loosing flanges, an outer body, a rolling bearing device, a blocking piece and a telescopic support, wherein the inner body is provided with an installing hole which is provided with a key groove, and the inner side and the outer side of the installing hole are each provided with a plane; the rolling bearing device comprises a supporting shaft and a rolling wheel, and the supporting shaft is provided with an anti-rotating flat key which is matched with the key groove of the installing hole; the upper end face and the lower end face of the outer body are connected with the anti-loosing flanges, the outer body is provided with the blocking piece, and the outer side of the outer body is connected with the telescopic support through a flange; the telescopic support comprises an outer barrel and an inner barrel located in the outer barrel, and the telescopic support performing telescopic and locking motion through hydraulic control; one face of the elastic body makes contact with the inner body, the other face of the elastic body makes contact with the spherical-face pressing ring, and the spherical-face pressing ring is connected with the anti-loosing flanges. The anti-collision drilling riser transverse restraining device is simple in structure, convenient to operate, high in reliability, easy and convenient to assemble, high in bearing capacity and capable of being widely used for collision prevention of various offshore drilling risers.
Description
technical field [0001] The invention relates to a lateral restraint device, in particular to a lateral restraint device for an anti-collision drilling riser used in the field of deepwater oil and gas drilling. Background technique [0002] The deepwater drilling riser is the weakest and most important connection unit between the subsea wellhead and the drilling platform. It is extremely vulnerable to severe weather conditions, especially the frequent occurrence of typhoons and other disastrous weather in the South my country Sea, which may easily cause riser rupture accidents. In terms of prevention measures for riser rupture accidents under typhoon conditions, in addition to improving the typhoon forecast accuracy and establishing an effective typhoon emergency plan, the soft suspension mode can be used for riser suspension operations. In soft suspension operation mode, the riser system is suspended on the tensioner. The tensioner can be regarded as a stretchable spring, wh...
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IPC IPC(8): E21B17/10E21B17/00
Inventor 刘秀全陈国明傅景杰畅元江姬景奇
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)