Quick connection mechanism for high-strength dual-seal deep sea anti-ice marine riser
A quick-connect, double-sealing technology, used in drilling pipes, casings, drilling equipment, etc., can solve the problems of low rigidity, large shaking and poor sealing performance of ice-resistant risers, and achieve strong rigidity, stable connection structure and sealing effect. Good results
Inactive Publication Date: 2011-08-24
建湖县永维阀门钻件有限公司
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[0010] As shown in the accompanying drawings, the female joint 1, the snap springs 2, 6, the sealing rings 1, 2, 3, 4, the male joint 5, and the positioning pin 7 are processed through a specific process. And the male joint 5 is welded to the upper end of the riser, and the female joint 1 is welded to the lower end of the water riser; the positioning pin 7 is assembled on the corresponding position of the male joint 5 . During offshore construction, the snap rings 2 and 6 sealing rubber rings 3 and 4 are packed into the corresponding positions of the male joint 5 . Use the guide surfaces 11, 11' of the male joint 5 and the female joint 1 and the positioning pin 7 to carry out the positioning and docking of the two sections of anti-icing risers, and use the three sections of radial mating surfaces 9, 9' on the female joint 1 and the male joint 5 to realize the male joint. The high-strength connection between the joint 5 and the female joint 1 uses the male joint 5 and the retai...
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The invention relates to a quick connection mechanism for a high-strength dual-seal deep sea anti-ice marine riser, which comprises a female joint, snap springs, seal rings, a male joint, a positioning pin, a detachable bolt and the like. The quick connection mechanism is characterized in that: two or more than two snap springs are arranged between the male joint and the female joint; snap spring grooves are formed at positions, which correspond to the male joint and the female joint, of the snap springs respectively; and a plurality of seal gaskets are formed between the male joint and the female joint. The upper end face of the male joint is fit with the downward end face of the upper part of an inner cavity of the female joint to form a radial fitting seal surface; the lower end faces of the snap springs and the lower bottom surfaces of the snap spring grooves on the correspond positions of the male joint and the female joint form radial fitting surfaces; and slant guiding surfaces which are fit are arranged on the outer side of the male joint and the inner side of the female joint, and axial fitting surfaces which are fit are arranged on the outer side of the male joint and the inner side of the female joint. The quick connection mechanism has the advantages of stable connection structure, large and multiple spans of the fitting surfaces, high rigidity, good seal effect and the like.
Description
technical field [0001] The invention relates to a quick-connect cementing device for a wellhead ice-resistant water riser in oil exploration and oil exploitation in deep sea areas, and belongs to special equipment for offshore oilfield exploitation. Background technique [0002] At present, most of the risers used in deep sea oil development are segmented risers with quick connectors. However, due to the deep sea, there are problems such as large water depth changes, large wave changes, complex geological conditions, and different well structures for each well. , cannot meet the environmental requirements of the deep sea area, the riser shakes and the rigidity decreases under the action of waves, and the sealing performance cannot be sealed under the action of deep water pressure, which seriously affects the safety and production of offshore oil wells. Contents of the invention [0003] In order to solve the problems of low rigidity, large sloshing and poor sealing perform...
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IPC IPC(8): E21B17/02
Inventor 金国林徐常胜孙献蔚
Owner 建湖县永维阀门钻件有限公司