CN101377121A - Underwater flexible apparatus for sea well drilling - Google Patents
Underwater flexible apparatus for sea well drilling Download PDFInfo
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- CN101377121A CN101377121A CNA2008102318456A CN200810231845A CN101377121A CN 101377121 A CN101377121 A CN 101377121A CN A2008102318456 A CNA2008102318456 A CN A2008102318456A CN 200810231845 A CN200810231845 A CN 200810231845A CN 101377121 A CN101377121 A CN 101377121A
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Abstract
The present invention relates to an underwater flexible unit used on an oceanic drilling riser. The flexible unit is mainly composed of a main structure and a flexible element assembly; wherein, the main structure is connected with the other parts of the riser and a lower annular blowout preventer; the flexible element assembly, which is positioned in the main structure and retained by the main structure, is composed of an upper spindle, a flexible element and a base; and the flexible element is connected with the upper spindle and the base and fixed in a body by a fixing flange, bolts and nuts. Adopting the rotational stiffness of the flexible element connection structure, the flexible unit is more effective than the spherical steel connection in terms of the control of the angle of the riser, and can be adapted to rotation in any direction, and the shock-absorbing and damping effects of the flexible unit are better than the shock-absorbing and damping effects of the spherical steel connection. The flexible unit can be flexibly designed in order to meet different oceanic drilling requirements. The flexible unit has the following advantages: the whole main structure has strong bearing capability, the structure is simple and compact, and maintenance and operation are convenient. Flexible units with different specifications can be designed according to different oceanic drilling requirements.
Description
Technical field
The invention belongs to the offshore oil drilling technical field.A kind of specifically flexible device under water that is installed in deep water floating marine drilling platform (or ship) with the Offshore Drilling Riser bottom.Its function is to allow to have angular deviation between marine riser and BOP group, thereby reduces the moment of deflection on the marine riser.
Background technology
The drilling water-separation pipe system is one of important step in the whole marine drilling equipment, and its product and technology are monopolized by developed countries such as America and Europes always.China also is being in space state aspect the design of the corollary equipment of Offshore Drilling Riser system, the manufacturing technology at present always, and flexible device is under water especially wherein monopolized by external only 3 companies in the world.
Marine drilling platform (or ship) except that roll and pitch takes place, also produces the heave movement up and down with wave period under wave action.These motions will influence riser system stability and wellhead assembly safety, owing to riser system can not adapt to and bear huge comprehensive external force drilling engineering is interrupted, even can't recover to continue to creep into, cause the drilling well failure, cause tremendous loss for the marine drilling engineering, even bringing on a disaster property consequence.Underwater flexible apparatus for sea well drilling is one of visual plant that ensures offshore oil drilling riser system operate as normal, mainly be installed in the marine riser bottom, primary structure is by adopting the ball-type joint or the flexible member of steel, there is angular deviation in permission between marine riser and BOP group, thereby reduces the moment of deflection on the marine riser.Flexible member is more effective than ball-type joint aspect control marine riser angle.At present, the drilling well flexible device of domestic existing floating drilling platform use all is an imported product.
Summary of the invention
The purpose of this invention is to provide flexible device under a kind of compact conformation, reliable in function, the drilling water-separation pipe water simple to operate.
Specifically, flexible device under a kind of Offshore Drilling Riser water, it is mainly by forming with the agent structure that is connected and the flexible member assembly of marine riser miscellaneous part and the ring-like preventer in bottom, flexible member assembly is positioned at agent structure and spacing by it, flexible member assembly is made of upper spindle, flexible member, pedestal, and flexible member and upper spindle and pedestal link together and be fixed in the body by bolt, nut with mounting flange.
Described flexible member is by the rubber of sheet between the spherical steel ring of many stacks or the reinforcing bar; And flexible member links together by sulfuration process and upper spindle and pedestal.The stop pin that prevents that flexible member from rotating is housed between pedestal and mounting flange.
Simultaneously wear-resisting battle pin is housed between body, wear ring and prevents relatively rotating of flexible member and body, upper spindle and wear ring.
Described agent structure is made of last wear-resisting tube, upper flange, mounting flange, body, following wear-resisting tube; Last wear-resisting tube connects as one by wear-resisting gasket ring and upper flange and is positioned at the upper flange inner chamber; Mounting flange is fixed on the body by bolt, nut; Wear-resisting down tube sealing and fixing is in the chamber body bottom, and wear ring is between down wear-resisting tube and upper spindle lower side.Wear ring adopts attachment screw to fix or adopts alternate manner to fix.
Latus rectum coupling requirement according to Offshore Drilling Riser, the standard A PI that the upper flange of agent structure, the type of attachment of body adopt corresponding latus rectum is flange-type structure up and down, or other type of attachment, realization is connected with marine riser miscellaneous part and the ring-like preventer in bottom.
Upper spindle and wear ring adopt wear-resisting spherical structure to realize freely rotating.
Be positioned at flexible member assembly top in the upper flange bottom and be fixed with dashboard.
Advantage of the present invention is:
1, adopt the rotational stiffness of flexible member syndeton to make it more effective than the ball-type connection of steel aspect control marine riser angle, and can adapt to the rotation of any direction, damping is connected with the ball-type that damping also is better than steel.But flexible design is to satisfy different marine environment drilling well requirement.
2, agent structure integrated carrying ability is strong, and is simple and compact for structure, and maintenance operation is convenient.Can be according to different marine environment drilling well requirement, the flexible device of design different size.
3, wear-resisting tube and wear-resisting gasket ring can be realized quick replacing, can effectively prevent and reduce the wearing and tearing to upper spindle and wear ring, guarantee the flexible member operate as normal, have also improved the installation work efficient of flexible device simultaneously.
4, all preservative treatments of the suitable marine environment of part employing.
Now shown and what describe is to have represented more excellent scheme, clearly also can make some based on the similar variation of this technology and the scheme of modification with understanding by reading to patent application of the present invention.The invention that presents now comprises variation and the modification that all these are similar, and it is limited by additional claim.
Description of drawings
Fig. 1 is a complete section front view of the present invention.
Fig. 2 is the partial cross sectional views of the flexible member (7) of Fig. 1.
The explanation of Fig. 1 sequence number:
1-last wear-resisting tube, 2-wear-resisting gasket ring, 3-attachment screw, 4-upper flange, 5-upper spindle, 6-dashboard, 7-flexible member, 8-stop pin, 9-mounting flange, 10-pedestal, 11-body, 12-pressure testing plug, 13-wear ring, 14-wear-resisting battle pin, 15-following wear-resisting tube, 16-bolt, 17-nut, 18-seal.
Spherical steel ring of Fig. 2 figure number explanation: 2-1 or reinforcing bar; 2-2 rubber.
The specific embodiment
Flexible device under a kind of Offshore Drilling Riser water, the API flange of this device employing standard, realization is connected with marine riser miscellaneous part and the ring-like preventer in bottom; Adopt flexible member assembly to realize reducing the function of marine riser moment of deflection, guarantee that marine drilling realizes smoothly; Adopt removable wear-resisting tube and wear-resisting gasket ring to reduce the wearing and tearing of this device.As shown in Figure 1.It by last wear-resisting tube 1, wear-resisting gasket ring 2, attachment screw 3, upper flange 4, upper spindle 5, dashboard 6, flexible member 7, put ship and resell on another market 8, mounting flange 9, pedestal 10, body 11, pressure testing plug (12), wear ring 13, wear-resisting battle pin 14, wear-resisting tube 15, bolt 16, nut 17, sealing ring 18 constitute down.Main by forming with the agent structure that is connected and the flexible member assembly of marine riser miscellaneous part and the ring-like preventer in bottom, flexible member assembly is positioned at agent structure and spacing by it, flexible member assembly is made of upper spindle 5, flexible member 7, pedestal 10, flexible member 7 and upper spindle 5 and pedestal 10 links together and be fixed in the body 11 by bolt 16, nut 17 with mounting flange 9.Described flexible member 7 is by the rubber 2-2 of sheet between the spherical steel ring of many stacks or the reinforcing bar 2-1; And flexible member 7 links together by sulfuration process and upper spindle 5 and pedestal 10.The stop pin 8 that prevents that flexible member 7 from rotating is housed between pedestal 10 and mounting flange 9.Simultaneously wear-resisting battle pin 14 is housed between body 11, wear ring 13 and prevents relatively rotating of flexible member and body 11, upper spindle 5 and wear ring 11.Described agent structure is made of last wear-resisting tube 1, upper flange 4, mounting flange 9, body 11, down wear-resisting tube 15; Last wear-resisting tube 1 connects as one with upper flange 4 by wear-resisting gasket ring 2 and is positioned at upper flange 4 inner chambers; Mounting flange 9 is fixed on the body 11 by bolt 16, nut 17; Wear-resisting down tube 15 sealing and fixing are in body 11 inner chamber bottoms, and wear ring 13 is between down wear-resisting tube 15 and upper spindle 5 lower side.
Latus rectum coupling requirement according to Offshore Drilling Riser, the standard A PI that the upper flange 4 of agent structure, the type of attachment of body 11 adopt corresponding latus rectum is flange-type structure up and down, or other type of attachment, realization is connected with marine riser miscellaneous part and the ring-like preventer in bottom.Wear ring 13 adopts attachment screw 3 to fix or adopts alternate manner to fix.Upper spindle 5 and wear ring 13 adopt wear-resisting spherical structure to realize freely rotating.Be positioned at flexible member assembly top in upper flange 2 bottoms and be fixed with dashboard 6.
Last wear-resisting tube 1, down wear-resisting tube 14 and wear-resisting gasket ring 2 can realize changing fast and prevent (or) reduce wearing and tearing to upper spindle 5 and wear ring 13, guarantee the flexible member operate as normal; Attachment screw 3 is used for fixing to wear ring 13; Mounting flange 9, body 11, bolt 16, nut 17 realized fixing and spacing to flexible member assembly.
The flexible member 7 of flexible member assembly mainly is made of the high-performance synthetic rubber of sheet between the spherical steel ring (or reinforcing bar) of many stacks, and synthetic rubber provides flexing and wiper seal, and steel ring (or reinforcing bar) provides intensity.Flexible member 7 links together by sulfuration process and upper spindle 5 and pedestal 10,, and be fixed in the body 11 with mounting flange 9 and bolt 16, nut 17.Upper spindle 5 and wear ring 13 are realized freely rotating by wear-resisting spherical structure.Put ship and resell on another market 8 and wear-resisting battle pin 14 prevent relatively rotating of flexible member and body 11, upper spindle 5 and wear ring 11.Function by said structure realization minimizing marine riser moment of deflection guarantees that marine drilling realizes smoothly.
Claims (9)
1, flexible device under a kind of Offshore Drilling Riser water, it is characterized in that main by forming with the agent structure that is connected and the flexible member assembly of marine riser miscellaneous part and the ring-like preventer in bottom, flexible member assembly is positioned at agent structure and spacing by it, flexible member assembly is made of upper spindle (5), flexible member (7), pedestal (10), flexible member (7) and upper spindle (5) and pedestal (10) links together and be fixed in the body (11) by bolt (16), nut (17) with mounting flange (9).
2, flexible device under the Offshore Drilling Riser water according to claim 1 is characterized in that the rubber (2-2) of described flexible member (7) by sheet between the spherical steel ring of many stacks or the reinforcing bar (2-1); And flexible member (7) links together by sulfuration process and upper spindle (5) and pedestal (10).
3, flexible device under the Offshore Drilling Riser water according to claim 2 is characterized in that being equipped with the stop pin (8) that prevents that flexible member (7) from rotating between pedestal (10) and mounting flange (9).
4, flexible device under the Offshore Drilling Riser water according to claim 1, it is characterized in that described agent structure by last wear-resisting tube (1), upper flange (4), mounting flange (9). body (11), wear-resisting tube (15) constitutes down; Last wear-resisting tube (1) connects as one by wear-resisting gasket ring (2) and upper flange (4) and is positioned at upper flange (4) inner chamber; Mounting flange (9) is fixed on the body (11) by bolt (16), nut (17); Descend wear-resisting tube (15) sealing and fixing in body (11) inner chamber bottom, wear ring (13) is positioned between following wear-resisting tube (15) and upper spindle (5) lower side.
5, according to flexible device under claim 1 or the 4 described Offshore Drilling Riser waters, it is characterized in that: according to the latus rectum coupling requirement of Offshore Drilling Riser, the standard A PI that the type of attachment of the upper flange of agent structure (4), body (11) adopts corresponding latus rectum is flange-type structure up and down, or other type of attachment, realization is connected with marine riser miscellaneous part and the ring-like preventer in bottom.
6, flexible device under the Offshore Drilling Riser water according to claim 4 is characterized in that: wear ring (13) adopts attachment screw (3) to fix or adopts alternate manner to fix.
7, flexible device under the Offshore Drilling Riser water according to claim 3 is characterized in that: wear-resisting battle pin (14) is housed between body (11), wear ring (13) simultaneously prevents relatively rotating of flexible member and body (11), upper spindle (5) and wear ring (11).
8, flexible device under the Offshore Drilling Riser water according to claim 4 is characterized in that: upper spindle (5) and wear ring (13) adopt wear-resisting spherical structure to realize freely rotating.
9, according to flexible device under any described Offshore Drilling Riser water of claim 1-4, it is characterized in that being positioned at flexible member assembly top in upper flange (2) bottom is fixed with dashboard (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102318456A CN101377121A (en) | 2008-10-08 | 2008-10-08 | Underwater flexible apparatus for sea well drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102318456A CN101377121A (en) | 2008-10-08 | 2008-10-08 | Underwater flexible apparatus for sea well drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101377121A true CN101377121A (en) | 2009-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102318456A Pending CN101377121A (en) | 2008-10-08 | 2008-10-08 | Underwater flexible apparatus for sea well drilling |
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| CN (1) | CN101377121A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949266A (en) * | 2010-09-06 | 2011-01-19 | 大庆石油管理局 | Inner rotor type rotary joint |
| CN102022088A (en) * | 2009-09-09 | 2011-04-20 | 维特科格雷控制有限公司 | Stabplate connections |
| CN101718175B (en) * | 2009-11-06 | 2013-06-05 | 宝鸡石油机械有限责任公司 | Universal joint device for ocean deepwater drilling |
| CN103334703A (en) * | 2013-06-24 | 2013-10-02 | 宝鸡石油机械有限责任公司 | Middle dual-flexibility device for offshore drilling riser |
| CN103776688A (en) * | 2014-01-21 | 2014-05-07 | 西南石油大学 | Marine riser test bed flange tension device |
| CN104483117A (en) * | 2014-12-04 | 2015-04-01 | 宝鸡石油机械有限责任公司 | Fatigue testing method and device for underwater flexible device |
-
2008
- 2008-10-08 CN CNA2008102318456A patent/CN101377121A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022088A (en) * | 2009-09-09 | 2011-04-20 | 维特科格雷控制有限公司 | Stabplate connections |
| CN102022088B (en) * | 2009-09-09 | 2014-12-24 | 维特科格雷控制有限公司 | Stabplate connections |
| CN101718175B (en) * | 2009-11-06 | 2013-06-05 | 宝鸡石油机械有限责任公司 | Universal joint device for ocean deepwater drilling |
| CN101949266A (en) * | 2010-09-06 | 2011-01-19 | 大庆石油管理局 | Inner rotor type rotary joint |
| CN101949266B (en) * | 2010-09-06 | 2012-09-26 | 大庆石油管理局 | Inner rotor type rotary joint |
| CN103334703A (en) * | 2013-06-24 | 2013-10-02 | 宝鸡石油机械有限责任公司 | Middle dual-flexibility device for offshore drilling riser |
| CN103334703B (en) * | 2013-06-24 | 2015-08-05 | 宝鸡石油机械有限责任公司 | A kind of Offshore Drilling Riser two flexible device in middle part |
| CN103776688A (en) * | 2014-01-21 | 2014-05-07 | 西南石油大学 | Marine riser test bed flange tension device |
| CN104483117A (en) * | 2014-12-04 | 2015-04-01 | 宝鸡石油机械有限责任公司 | Fatigue testing method and device for underwater flexible device |
| CN104483117B (en) * | 2014-12-04 | 2017-01-25 | 宝鸡石油机械有限责任公司 | Fatigue testing method and device for underwater flexible device |
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Open date: 20090304 |