CN208380512U - A kind of vertical-adjustment device of Offshore Drilling Riser - Google Patents

Abstract

The utility model discloses a kind of vertical-adjustment device of Offshore Drilling Riser, drilling platforms, marine riser；The marine riser is fixed in the underface of the drilling platforms, the marine riser lower end is connected with subsea wellheads, adjustment ring is additionally provided on the marine riser side wall, the adjustment ring includes the external ring that the inner ring affixed with the marine riser and the inner ring are slidably connected, spring is equipped between the endocyclic outer wall and external ring inner wall, the external ring outer wall is equipped with connection buckle, is hinged with stress transfer bar on the connection buckle, the stress transfer bar other end is fixed on lug.Reaction force is applied to marine riser by the adjustment ring with spring arrangement, and the reaction force that the more serious adjustment ring of marine riser deformation provides is bigger, it can make the fast quick-recovery plumbness of marine riser, drill string is avoided to wear with marine riser, energy loss is reduced, the service life of marine riser and drill string is extended.

Description

A kind of vertical-adjustment device of Offshore Drilling Riser

Technical field

The utility model relates to Offshore Oil Engineering Equipment technical field, in particular to a kind of Offshore Drilling Riser is hung down Straight adjustment device.

Background technique

Marine riser is the critical component for connecting submarine facility and sea floating equipment, is important in entire offshore oil equipment And weak link, it is offshore oil exploration and exploitation " bottleneck ", has the characteristics that high-tech, high investment, high risk.With Constantly to deep-water developments, required water proof length of tube is continuously increased for marine petroleum development, water proof tubing string own wt significantly more than The enabling capabilities of marine floating type equipment, to guarantee water proof tubing string and marine settings operation safety, marine riser need to be equipped with corresponding floating Force compensating device is to mitigate underwater self weight, to realize the function of its deep water or even ultra-deep-water isolation seawater building channel.

It often bends under action of ocean current in marine riser use process, drill string etc. is transported in curved water proof column Friction and wear will occur with water proof inside pipe wall when dynamic, cause energy loss, shorten making for the tools such as marine riser and drill string Use the service life.

Utility model content

The purpose of this utility model be in view of the above-mentioned problems, provide a kind of vertical-adjustment device of Offshore Drilling Riser, It can guarantee that marine riser can remain plumbness under action of ocean current.

To achieve the above object, the method that the utility model uses is: a kind of vertical adjustment dress of Offshore Drilling Riser It sets, drilling platforms, marine riser；The marine riser is fixed in the underface of the drilling platforms, and the marine riser lower end is connected with Subsea wellheads, are additionally provided with adjustment ring on the marine riser side wall, the adjustment ring include the inner ring affixed with the marine riser, with The external ring that the inner ring is slidably connected is equipped with spring, the external ring outer wall between the endocyclic outer wall and external ring inner wall It is equipped with connection buckle, is hinged with stress transfer bar on the connection buckle, the stress transfer bar other end is fixed on lug.

As a kind of improvement of the utility model, it is integrally formed in the inner ring there are four T shape column, the T shape column is uniformly distributed In the inner ring and run through the external ring, part of the T shape column between the inner ring and external ring is arranged with bullet Spring.

As a kind of improvement of the utility model, the inner ring is split ring and is bolted connection in the water proof Guan Shang.

As a kind of improvement of the utility model, the adjustment ring shares three groups and is evenly arranged on the marine riser.

As a kind of improvement of the utility model, the lug is equipped with grapple.

The utility model has the advantages that

1, the vertical-adjustment device of a kind of Offshore Drilling Riser described in the utility model, by having spring arrangement Adjustment ring applies reaction force to marine riser, and the reaction force that the more serious adjustment ring of marine riser deformation provides is bigger, energy Make the fast quick-recovery plumbness of marine riser, drill string is avoided to wear with marine riser, reduce energy loss, extends marine riser and brill The service life of column.

2, external ring is connected in inner ring by the way that T shape column is mobilizable, and the spring on T shape column then plays vertical adjust to marine riser Whole effect；

3, lug is fixed on seabed by grapple, keeps vertical-adjustment device connection more firm.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the sectional view of adjustment ring in Fig. 1.

Each component in figure are as follows:

1- drilling platforms, 2- marine riser, 3- subsea wellheads, 4- adjustment ring, 401- inner ring, the external ring of 402-, 403- connection Button, 404-T shape column, 5- spring, 6- stress transfer bar, 7- lug, 8- grapple.

Specific embodiment

The utility model is further described below with reference to embodiment and referring to attached drawing, it should be understood that following specific embodiment parties Formula is merely to illustrate the utility model rather than limitation the scope of the utility model.It should be noted that making in being described below Word "front", "rear", "left", "right", "up" and "down" refer to that the direction in width figure, word "inner" and "outside" respectively refer to Be directed towards or far from geometric center of specific component direction.

As described in Figure, the utility model provides a kind of vertical-adjustment device of Offshore Drilling Riser, it is characterised in that: bores Well platform 1, marine riser 2；The marine riser 2 is fixed in the underface of the drilling platforms 1, and 2 lower end of marine riser is connected with Subsea wellheads 3, are additionally provided with adjustment ring 4 on 2 side wall of marine riser, the adjustment ring 4 include with the marine riser 2 it is affixed in Ring 401, the external ring 402 being slidably connected with the inner ring 401, the inner ring 401 are split ring and are bolted connection On the marine riser 2.It is integrally formed in the inner ring 401 there are four T shape column 404, the T shape column 404 is evenly arranged in described On ring 401 and run through the external ring 402, part set of the T shape column 404 between the inner ring 401 and external ring 402 Equipped with spring 5, external 402 outer wall of ring is equipped with connection buckle 403, is hinged with stress transfer bar 6 on the connection buckle 403, 6 other end of stress transfer bar is fixed on lug 7.

The structural principle of the utility model: when deformation occurs under action of ocean current that hour offset will drive inner ring 401 for marine riser Offset, the spring on the direction that inner ring 401 deviates is compressed and generates reaction force for the anti-pushed home of marine riser, and this Reaction force is then by stress transfer bar and lug offer, and another spring meeting on the opposite direction of the offset of inner ring 401 It is stretched and pulling force is provided marine riser is retracted into original position, the pulling force and thrust of two springs of such marine riser 2 on the same line Under the action of being capable of rapid return.And this pulling force provided by spring and thrust can change, shape with the variation of deformation Become more bigger energetically, marine riser return is rapider.

As another embodiment of the utility model, the adjustment ring 4 shares three groups and is evenly arranged on the marine riser 2 On.In order to guarantee marine riser vertical adjustment everywhere and the considerations of production cost, three groups of adjustment rings of setting are the most practical.

It is set on the lug 7 as another embodiment of the utility model in order to ensure lug 7 grabs ground securely There is grapple 8.

The vertical-adjustment device of a kind of Offshore Drilling Riser provided by the utility model, by the tune for having spring arrangement The domain applies reaction force to marine riser, and the reaction force that the more serious adjustment ring of marine riser deformation provides is bigger, can make The fast quick-recovery plumbness of marine riser, avoids drill string from wearing with marine riser, reduces energy loss, extends marine riser and drill string Service life.

The above descriptions are merely preferred embodiments of the present invention, is not to make any other to the utility model The limitation of form, and according to any modification or equivalent variations made by the technical essence of the utility model, it is practical new to still fall within this Type range claimed.

Claims (5)

1. a kind of vertical-adjustment device of Offshore Drilling Riser, it is characterised in that: drilling platforms (1), marine riser (2)；It is described Marine riser (2) is fixed in the underface of the drilling platforms (1), and marine riser (2) lower end is connected with subsea wellheads (3), institute It states and is additionally provided with adjustment ring (4) on marine riser (2) side wall, the adjustment ring (4) includes the inner ring affixed with the marine riser (2) (401), the external ring (402) being slidably connected with the inner ring (401), inner ring (401) outer wall and external ring (402) inner wall Between be equipped with spring (5), external ring (402) outer wall is equipped with connection buckle (403), is hinged on the connection buckle (403) Stress transfer bar (6), stress transfer bar (6) other end are fixed on lug (7).

2. a kind of vertical-adjustment device of Offshore Drilling Riser according to claim 1, it is characterised in that: the inner ring (401) it is integrally formed on there are four T shape column (404), the T shape column (404) is evenly arranged on the inner ring (401) and through described External ring (402), part of the T shape column (404) between the inner ring (401) and external ring (402) are arranged with spring (5).

3. a kind of vertical-adjustment device of Offshore Drilling Riser according to claim 2, it is characterised in that: the inner ring (401) it is split ring and is bolted connection on the marine riser (2).

4. a kind of vertical-adjustment device of Offshore Drilling Riser according to claim 3, it is characterised in that: the adjustment Ring (4) shares three groups and is evenly arranged on the marine riser (2).

5. a kind of vertical-adjustment device of Offshore Drilling Riser according to claim 1 or 4, it is characterised in that: described Lug (7) is equipped with grapple (8).