CN113931583A - Drilling riser protection device capable of unloading force - Google Patents
Drilling riser protection device capable of unloading force Download PDFInfo
- Publication number
- CN113931583A CN113931583A CN202111087047.2A CN202111087047A CN113931583A CN 113931583 A CN113931583 A CN 113931583A CN 202111087047 A CN202111087047 A CN 202111087047A CN 113931583 A CN113931583 A CN 113931583A
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- China
- Prior art keywords
- protection device
- riser
- device capable
- drilling riser
- ring
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- 238000005553 drilling Methods 0.000 title claims abstract description 25
- 230000001681 protective effect Effects 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000001737 promoting effect Effects 0.000 abstract 1
- 210000000883 ear external Anatomy 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a well drilling riser protection device capable of unloading force, which comprises a riser and a protective sleeve, wherein the riser is of a hollow cylindrical structure, at least two groups of limit rings are arranged on the outer side of the riser, each group of limit rings comprises 4 stop blocks uniformly distributed on the same circumference at intervals, a transverse track groove is arranged between the two groups of limit rings, the protective sleeve is formed by combining two semicircular ring sleeves, the outer sides of the ring sleeves are drum-shaped, the cross sections of the outer sides of the ring sleeves are wave-shaped, an elastic layer is arranged on the outer sides of the ring sleeves, bearing seats are arranged on the inner sides of the ring sleeves at intervals, bearings are transversely arranged in the bearing seats, and the outer ends of the bearings are arranged in the track groove. Eliminate the transverse impact of ocean current to the riser, overall structure is simple and practical, and the cost of manufacture is few, is worth promoting.
Description
Technical Field
The invention belongs to the field of marine risers, and particularly relates to a drilling marine riser protection device capable of unloading force.
Background
The offshore marine riser is a casing from the bottom of an offshore drilling platform to a shallow seabed layer, is a safe channel for isolating seawater and circulating mud during drilling operation, is connected with a fluid director at the upper part and is connected with a blowout preventer at the lower part, and is a group of important underwater drilling equipment. In offshore oil exploration, a drilling riser is an important and weak link in the whole drilling system and is an important factor influencing the offshore drilling safety. Therefore, the stability and integrity of the riser play an important role in the exploration and exploitation of the whole petroleum.
When the marine riser works in the sea, the marine riser can continuously receive the action of composite loads such as waves, ocean currents and the like, the marine riser can generate deformation and vibration in a certain range under the action of vortex-induced vibration, when the strength is larger than the bearing range of the marine riser, the marine riser can be subjected to fatigue failure to cause safety accidents, the marine environment can be polluted, the influence difficult to recover is caused, the existing earthquake suppression device is high in cost, complex in manufacturing process, large in weight, complex in installation, inconvenient in field implementation and operation and the like, and the improvement is needed.
Disclosure of Invention
In order to solve the problems, the invention discloses a drilling riser protection device capable of unloading force, which is simple and practical in structure, low in manufacturing cost, capable of reducing impact of ocean currents on a riser and well protecting the riser.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides a drilling riser protection device that can unload power, includes riser, protective sheath, the riser is hollow cylindrical structure, the riser outside is equipped with two sets of at least spacing rings, and every spacing ring of group includes even interval distribution's dog on 4 same circumference, is equipped with horizontal track groove between two sets of spacing rings, the protective sheath is two semi-circular ring cover combinations and forms, the ring cover outside is the drum type, and the cross section in the ring cover outside is the wave, and the ring cover outside is equipped with the elastic layer, and the inboard interval of ring cover is equipped with the bearing frame, transversely set up the bearing in the bearing frame, the bearing outer end sets up at the track inslot.
As an improvement of the invention, the limit rings are N groups, and the number of the protective sleeves is N-1.
As an improvement of the invention, the limit ring, the protective sleeve and the track groove are arranged in parallel.
As an improvement of the invention, the distance between the two groups of limit rings is larger than the height of the stop block.
As an improvement of the invention, the two ends of the ring sleeve are provided with external ears, and the two semicircular rings are sleeved at the external ears and connected through stainless steel bolts.
As an improvement of the invention, the track groove is a trapezoidal groove with a large outer part and a small inner part.
As a modification of the present invention, the elastic layer is made of TPR material.
As a refinement of the invention, the minimum outer diameter of the protective casing is not less than 60% of the maximum outer diameter.
The invention has the beneficial effects that:
according to the drilling riser protection device capable of unloading force, the plurality of groups of protection sleeves wrap the outer side of the riser, the outer side of each protection sleeve is wavy and is in a drum shape, longitudinal impact of ocean currents on the riser can be eliminated, on the other hand, the protection sleeves can transversely rotate to unload force, transverse impact of the ocean currents on the riser is eliminated, the whole structure is simple and practical, the manufacturing cost is low, and the drilling riser protection device is worthy of popularization.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of a cuff according to the present invention.
Fig. 3 is a top view of a riser according to the present invention.
Fig. 4 is a schematic view of a riser according to the present invention.
List of reference numerals:
1. the marine riser, 2, protective sheath, 3, spacing ring circle, 4, dog, 5, track groove, 6, ring cover, 7, the ring cover outside, 8, elastic layer, 9, bearing frame, 10, bearing, 11, external ear, 12, bolt.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention.
As shown in the drawing, the drilling riser protection device capable of unloading force comprises a riser 1 and a protection sleeve 2, wherein the riser 1 is of a hollow cylindrical structure, at least two groups of limit rings 3 are arranged on the outer side of the riser 1, each group of limit rings comprises 4 stop blocks 4 uniformly distributed on the same circumference at intervals, a transverse track groove 5 is arranged between the two groups of limit rings 3, the protection sleeve 2 is formed by combining two semicircular ring sleeves 6, the outer sides 7 of the ring sleeves are drum-shaped, the cross sections of the outer sides 7 of the ring sleeves are wavy, elastic layers 8 are arranged on the outer sides of the ring sleeves, bearing seats 9 are arranged on the inner sides of the ring sleeves at intervals, bearings 10 are transversely arranged in the bearing seats 9, and the outer ends of the bearings 10 are arranged in the track grooves 5.
According to the drilling riser protection device capable of unloading force, the plurality of groups of protection sleeves wrap the outer side of the riser, the basic shape of each protection sleeve is drum-shaped, the outer side of each protection sleeve is wavy, longitudinal impact of ocean currents on the riser can be eliminated, on the other hand, the protection sleeves can transversely rotate to unload force, transverse impact of the ocean currents on the riser is eliminated, the whole structure is simple and practical, the manufacturing cost is low, and the drilling riser protection device is worthy of popularization.
The limiting rings 3 can be N groups, the number of the protective sleeves 2 is N-1, the plurality of protective sleeves wrap the outer surface of the marine riser, and a stop block 4 is arranged between the upper part and the lower part to prevent the protective sleeves from moving up and down; the protective sleeves can be positively transmitted or reversely rotated under the impact of ocean currents, and the impact force of the ocean currents is discharged in the rotating process, so that the formation of vortexes can be hindered.
The limiting ring of each group comprises 4 stop blocks 4 which are uniformly distributed on the same circumference at intervals, and the stop blocks are very small (only prevent the protective sleeve from moving up and down) but cannot prevent ocean current from longitudinally washing along the wave-shaped outer side surface.
The limiting rings 3, the protective sleeve 2 and the track groove 5 are arranged in parallel, and the distance between the two groups of limiting rings 3 is greater than the height of the stop block 4, so that the protective sleeve 2 is ensured to rotate in a fixed range but cannot move up and down.
The two ends of the ring sleeve 6 are provided with the external lugs 11, and the two semicircular ring sleeves 6 are connected at the external lugs through the stainless steel bolts 12, so that the ring sleeve is convenient to disassemble and replace.
The track groove 5 is a trapezoidal groove with a large outer part and a small inner part, the outer end of the bearing 10 is arranged in the track groove 5, the rotating route is clear, and the rotating process is smooth.
According to the invention, the elastic layer 8 is arranged on the outer side of the ring sleeve 6, when the marine riser 1 and the protective sleeve 2 are impacted by ocean currents, the elastic layer 8 can absorb and resolve a part of impact force, then the appearance of the circular drum shape can resolve a part of impact force, and finally the appearance of the protective sleeve 2 is of a wave-shaped structure formed by a circular arc convex surface and a groove, so that part of impact force is relieved, the impact of the bar on the marine riser is reduced to a bearable range, and the marine riser is protected; the elastic layer 8 is made of TPR material, is soft and corrosion resistant, and has long service life.
The minimum outer diameter of the protective sleeve 2 is not less than 60% of the maximum outer diameter, the longitudinal circular arc (drum shape) and the transverse circular arc (surface wave shape) of the protective sleeve reach the balance standard, the impact force in each direction can be dispersed, and the protective performance is good.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (8)
1. A drilling riser protection device that can unload power which characterized in that: including riser, protective sheath, the riser is hollow cylindrical structure, the riser outside is equipped with two sets of at least spacing rings, and every spacing ring of group includes the dog of even interval distribution on 4 same circumferences, is equipped with horizontal track groove between two sets of spacing rings, the protective sheath is that two semicircular ring cover combinations form, the ring cover outside is the drum type, and the cross section in the ring cover outside is the wave, and the ring cover outside is equipped with the elastic layer, and the inboard interval of ring cover is equipped with the bearing frame, transversely set up the bearing in the bearing frame, the bearing outer end sets up at the track inslot.
2. A drilling riser protection device capable of unloading force according to claim 1, characterized in that: the spacing ring is N group, the protective sheath is N-1.
3. A drilling riser protection device capable of unloading force according to claim 1, characterized in that: the limiting ring, the protective sleeve and the track groove are arranged in parallel.
4. A drilling riser protection device capable of unloading according to claim 3, wherein: the distance between the two groups of limit rings is greater than the height of the stop block.
5. A drilling riser protection device capable of unloading force according to claim 1, characterized in that: the two ends of the ring sleeve are provided with external lugs, and the two semicircular ring sleeves are connected at the external lugs through stainless steel bolts.
6. A drilling riser protection device capable of unloading force according to claim 1, characterized in that: the track groove is a trapezoidal groove with a large outer part and a small inner part.
7. A drilling riser protection device capable of unloading force according to claim 1, characterized in that: the elastic layer is made of TPR material.
8. A drilling riser protection device capable of unloading force according to claim 1, characterized in that: the minimum outer diameter of the protective casing is not less than 60% of the maximum outer diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111087047.2A CN113931583A (en) | 2021-09-16 | 2021-09-16 | Drilling riser protection device capable of unloading force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111087047.2A CN113931583A (en) | 2021-09-16 | 2021-09-16 | Drilling riser protection device capable of unloading force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113931583A true CN113931583A (en) | 2022-01-14 |
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ID=79275856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111087047.2A Pending CN113931583A (en) | 2021-09-16 | 2021-09-16 | Drilling riser protection device capable of unloading force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113931583A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2445751A (en) * | 2007-01-17 | 2008-07-23 | Trelleborg Crp Ltd | Buoyancy module clamp with vortex tripping features for a riser |
| CN102966313A (en) * | 2012-11-16 | 2013-03-13 | 西南石油大学 | Marine riser ocean flow response surface additional layer |
| CN103437717A (en) * | 2013-09-16 | 2013-12-11 | 西南石油大学 | Rotatable pentagonal impeller type vortex-induced vibration inhibiting device and method |
| CN103485731A (en) * | 2013-10-15 | 2014-01-01 | 西南石油大学 | Device and method for inhibiting vortex-induced vibration of rotatable boomerang type water riser |
| CN203515368U (en) * | 2013-10-23 | 2014-04-02 | 西南石油大学 | Riser vortex inducting vibration suppression device with rough undulating surface |
| US20160145948A1 (en) * | 2014-11-21 | 2016-05-26 | Matrix Composites & Engineering Ltd. | Marine drilling riser protection system |
| CN106437544A (en) * | 2016-09-23 | 2017-02-22 | 西南石油大学 | Device and method for inhibiting vortex-induced vibration of rotary and detachable S-shaped strake |
-
2021
- 2021-09-16 CN CN202111087047.2A patent/CN113931583A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2445751A (en) * | 2007-01-17 | 2008-07-23 | Trelleborg Crp Ltd | Buoyancy module clamp with vortex tripping features for a riser |
| CN102966313A (en) * | 2012-11-16 | 2013-03-13 | 西南石油大学 | Marine riser ocean flow response surface additional layer |
| CN103437717A (en) * | 2013-09-16 | 2013-12-11 | 西南石油大学 | Rotatable pentagonal impeller type vortex-induced vibration inhibiting device and method |
| CN103485731A (en) * | 2013-10-15 | 2014-01-01 | 西南石油大学 | Device and method for inhibiting vortex-induced vibration of rotatable boomerang type water riser |
| CN203515368U (en) * | 2013-10-23 | 2014-04-02 | 西南石油大学 | Riser vortex inducting vibration suppression device with rough undulating surface |
| US20160145948A1 (en) * | 2014-11-21 | 2016-05-26 | Matrix Composites & Engineering Ltd. | Marine drilling riser protection system |
| CN106437544A (en) * | 2016-09-23 | 2017-02-22 | 西南石油大学 | Device and method for inhibiting vortex-induced vibration of rotary and detachable S-shaped strake |
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