CN207017958U - A kind of marine riser hangs special-purpose nipple - Google Patents
A kind of marine riser hangs special-purpose nipple Download PDFInfo
- Publication number
- CN207017958U CN207017958U CN201720862339.1U CN201720862339U CN207017958U CN 207017958 U CN207017958 U CN 207017958U CN 201720862339 U CN201720862339 U CN 201720862339U CN 207017958 U CN207017958 U CN 207017958U
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- CN
- China
- Prior art keywords
- outer barrel
- marine riser
- piston
- riser
- inner cylinder
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Abstract
It the utility model is related to a kind of marine riser suspension special-purpose nipple, the pipe nipple includes the outer barrel for one end open hollow cavity, close the end cap of the openend of outer barrel, it is arranged in outer barrel and the inner chamber of outer barrel is divided into the piston of upper chamber and spring chamber, the pin being fixedly installed on the barrel of outer barrel, one end enters the inner cylinder in spring chamber and being fixedly connected with the piston, the riser joints being fixedly connected with the other end of inner cylinder and the spring set in spring chamber around inner cylinder through the blind end of outer barrel；The lateral dimension of the openend end face of outer barrel is more than the cylinder lateral dimension of outer barrel；Upper chamber is connected with oil-out, and spring chamber is connected with oil inlet；Multiple pins clamp the both ends of piston, and position of the piston in outer barrel is fixed, and when pin is by shear fracture, piston can slide in outer barrel；Riser joints are used to be connected with marine riser string；Blind end of the both ends of spring respectively with piston and outer barrel is in contact.
Description
Technical field
It the utility model is related to a kind of hanging pup joint, more particularly to a kind of marine riser suspension with pooling feature is special short
Section.
Background technology
Deep Water Drilling Riser is the critical facility for connecting underwater well head to drilling platforms.Being drilled during well operations may
Run into the emergencies such as typhoon, high current and cause the skew of drilling platforms position, if now remaining in that drilling platforms and water
The connection status of lower well head, may cause the bending failure of underwater well head, therefore now need to free drilling riser guard system,
And the marine riser string of upper km is hung on drilling platforms.If sea situation is severe, the marine riser string of suspension can be put down with drilling well
The heave of platform and axial vibration occurs.Under normal condition, because marine riser string is directly to be sitting on turntable surface, drilling platforms
Heave load be directly and rigidly delivered in marine riser string, cause marine riser string there may be compressed axially, stress is exceeded etc.
Risk.In order to avoid this risk, during field operation, sometimes it can pass through borehole compensation system by the way of soft suspension
The compensation of marine riser axial direction heave movement is realized with the compensation system of stretcher.But traditional soft suspension needs borehole compensation
System and marine riser stretcher work compound, need to be opened in floating drilling platform region and moon pool area in this way
The connection of tight device system, the pooling feature of marine riser up and down motion is realized using telescopic joint and hydraulic tensioner.This suspension side
Case operation procedure complicated and time consumption, and it is higher in urgent sea situation next month pool area operating risk.In addition, conventional telescopic joint and liquid
Pressure tensioner system applies in general to use routine under the conditions of the severe sea condition such as drillng operation operating mode, typhoon of relatively mild sea situation
Implement carries out marine riser suspension, and the performance of telescopic joint and hydraulic tensioner system may be caused to damage, and recovers normal and bores
Also need to carry out inspection test during well, delay the activity duration.Therefore, the short of the soft suspension that is specially adapted for marine riser is lacked at present
Regulating device.
The content of the invention
In view of the above-mentioned problems, the purpose of this utility model is to provide a kind of marine riser suspension special-purpose nipple, can be quickly real
Existing marine riser suspension, marine riser caused dynamic during drill ship heave movement is hung by hydraulic spring grease cup system buffer and carried
Lotus, improve the security of suspension marine riser.
To achieve the above object, the utility model takes following technical scheme：A kind of marine riser hangs special-purpose nipple, and it is special
Sign is that the pipe nipple includes：For the outer barrel of one end open hollow cavity, the end cap of the openend of the outer barrel is closed, is arranged on
It is divided into the piston of upper chamber and spring chamber in the outer barrel and by the inner chamber of the outer barrel, is fixedly installed on the outer barrel
Pin on barrel, one end enter what is be fixedly connected in the spring chamber and with the piston through the blind end of the outer barrel
Inner cylinder, the riser joints being fixedly connected with the other end of the inner cylinder and in the spring chamber around the inner cylinder set
Spring；Wherein, the lateral dimension of the openend end face of the outer barrel is more than the cylinder lateral dimension of the outer barrel, the water proof
Pipe suspension special-purpose nipple can be sitting on the voussoir of turntable surface suspension arrangement by the openend end face；The upper chamber with
Oil-out is connected, and the spring chamber is connected with oil inlet；Multiple pins clamp the both ends of the piston, by described in
Position of the piston in the outer barrel is fixed, and when the pin is by shear fracture, the piston can slide in the outer barrel；Institute
Riser joints are stated to be used to be connected with marine riser string；The both ends of the spring blind end phase with the piston and outer barrel respectively
Contact.
The pin can bear the weight of the inner cylinder and riser joints, and leave safe clearance.
The section form of the riser joints is consistent with the section form of conventional riser joints.
The end cap is mounted by means of bolts on the openend end face of the outer barrel；The riser joints with
The inner cylinder is fixedly connected by screw thread form.
For the utility model due to taking above technical scheme, it has advantages below：1st, a kind of water proof of the present utility model
Pipe hangs special-purpose nipple, and the switch of inner/outer drum structure compensation function is controlled using pin feature, locking shape is under conventional sense
State, inner/outer tube pin is sheared once marine riser is hung, possess flexible and motion compensation function.2nd, one kind of the present utility model
Marine riser hangs special-purpose nipple, and inner/outer tube annular space is furnished with piston, spring and hydraulic system, when wave causes on floating drilling platform
During lower heave, the heave of marine riser string is buffered by spring and HYDRAULIC CONTROL SYSTEM, greatly reduces long marine riser string because boring
Well platform heaves and produced the risk for being compressed axially destruction, improves the security of marine riser suspension.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation that the utility model shows fluid pressure line；
Fig. 3 is the structural representation of A-A sections in Fig. 1；
Fig. 4 is the structural representation of B-B sections in Fig. 1；
Fig. 5 is the structural representation of C-C sections in Fig. 1.
Embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
As shown in Fig. 1~Fig. 5, a kind of marine riser suspension special-purpose nipple 100 provided by the utility model, using combined type knot
Structure, it includes outer barrel 1, end cap 2, piston 3, pin 4, inner cylinder 5, riser joints 6 and spring 7；Wherein, outer barrel 1 is opened for one end
The hollow cavity of mouth, the lateral dimension of openend end face 13 are more than the cylinder lateral dimension of outer barrel 1, marine riser suspension special-purpose nipple
100 are sitting on the voussoir 301 of turntable surface suspension arrangement 300 by openend end face 13；End cap 2 closes the openend 11 of outer barrel 1；
Piston 3 is arranged in outer barrel 1, and the inner chamber of outer barrel 1 is divided into upper chamber 14 and the two parts of spring chamber 15, and upper chamber
14 are connected with oil-out 16, and spring chamber 15 is connected with oil inlet 17；Multiple pins 4 are fixedly installed on the barrel of outer barrel 1
On, and the both ends of piston 3 are clamped, and so as to which position of the piston 3 in outer barrel 1 be fixed, the energy of piston 3 when pin 4 is by shear fracture
Slided in outer barrel 1；The one end of inner cylinder 5 enters in spring chamber 15 through the blind end 12 of outer barrel 1 and is fixedly connected with piston 3；
Riser joints 6 are located at outside outer barrel 1, and are fixedly connected with the other end of inner cylinder 5, for being connected with marine riser string 200；Bullet
Inner cylinder 5 is provided with multiple springs 7 in spring chamber 15, the both ends of spring 7 phase of blind end 12 with piston 3 and outer barrel 1 respectively
Contact.
In above-described embodiment, the design shear-type load of pin 4 can bear the weight of inner cylinder 5, and consider certain safety
Surplus, shear fracture will not be occurred in hoisting process with the marine riser suspension special-purpose nipple 100 for ensuring to assemble.
In above-described embodiment, end cap 2 is mounted by means of bolts on the openend end face 13 of outer barrel 1；Riser joints 6
It is fixedly attached to by the form of screw thread on inner cylinder 5.
In above-described embodiment, the section form of riser joints 6 is consistent with the riser joints section form of routine, with true
Protect the connection with marine riser string 200.
A kind of marine riser suspension special-purpose nipple 100 of the present utility model when in use, comprises the following steps：
1) end face for the marine riser string 200 for needing to hang is sitting on the voussoir 301 of turntable surface suspension arrangement 300, used
Lifting cranes lifts the marine riser suspension special-purpose nipple 100 assembled, and marine riser is hung into special-purpose nipple 100 and marine riser string
200 are connected by riser joints 6, and the joint of marine riser is all form of flanges under regular situation.
2) oil-out 16 and oil inlet 17 are connected with hydraulic line, marine riser is hung to the spring of special-purpose nipple 100
Hydraulic oil is all filled in chamber 15 and upper chamber 14, by adjusting the pressure differential of oil inlet 17 and oil-out 16, shear pin
4 so that can be with moving axially relative between inner cylinder 5 and outer barrel 1.
3) slowly lifting marine riser hangs special-purpose nipple 100 so that turntable surface suspension arrangement is driven in lift-off in marine riser string 200
300 voussoir 301, now the weight of whole marine riser string 200 by marine riser suspension special-purpose nipple 100 undertake；Because suspension carries
Lotus increases, and the spring 7 in the inner cylinder 5 of marine riser suspension special-purpose nipple 100 is compressed to most short, and marine riser is hung into special-purpose nipple
100 and marine riser string 200 by marine riser hang special-purpose nipple 100 outer barrel 1 openend end face 13 be sitting in turntable surface hang
On the voussoir 301 of device 300.
4) by adjusting the pressure differential between oil inlet 17 and oil-out 16 (namely spring chamber 15 and upper chamber 14
Between pressure differential) so that the load of marine riser string 200 is mainly undertaken by pressure differential, complete marine riser string 200 suspension.This
When drilling platforms again with wave occur heave movement when, the heave of marine riser string 200 is delayed by spring 7 and hydraulic system
Solution, reduces the axial vibration load of marine riser string, avoids the risk that marine riser string 200 is compressed.
The various embodiments described above are merely to illustrate the utility model, wherein the structure of each part, set location and its connection side
Formula etc. can be all varied from, every equivalents carried out on the basis of technical solutions of the utility model and improvement,
It should not exclude outside the scope of protection of the utility model.
Claims (5)
1. a kind of marine riser hangs special-purpose nipple, it is characterised in that the pipe nipple includes：
For the outer barrel of one end open hollow cavity,
The end cap of the openend of the outer barrel is closed,
It is arranged in the outer barrel and the inner chamber of the outer barrel is divided into the piston of upper chamber and spring chamber,
The pin being fixedly installed on the barrel of the outer barrel,
One end enters the inner cylinder being fixedly connected in the spring chamber and with the piston through the blind end of the outer barrel,
The riser joints being fixedly connected with the other end of the inner cylinder, and
The spring set in the spring chamber around the inner cylinder；
Wherein, the lateral dimension of the openend end face of the outer barrel is more than the cylinder lateral dimension of the outer barrel, the marine riser
Suspension special-purpose nipple can be sitting on the voussoir of turntable surface suspension arrangement by the openend end face；The upper chamber is with going out
Hydraulic fluid port is connected, and the spring chamber is connected with oil inlet；Multiple pins clamp the both ends of the piston, by the work
The position filled in the outer barrel is fixed, and when the pin is by shear fracture, the piston can slide in the outer barrel；It is described
Riser joints are used to be connected with marine riser string；Blind end of the both ends of the spring respectively with the piston and outer barrel connects
Touch.
2. a kind of marine riser suspension special-purpose nipple as claimed in claim 1, it is characterised in that the pin can bear described
The weight of inner cylinder and riser joints, and leave safe clearance.
3. a kind of marine riser suspension special-purpose nipple as claimed in claim 1 or 2, it is characterised in that the riser joints
Section form is consistent with the section form of conventional riser joints.
4. a kind of marine riser suspension special-purpose nipple as claimed in claim 1 or 2, it is characterised in that the end cap passes through bolt
It is fixedly mounted on the openend end face of the outer barrel；The riser joints are fixed with the inner cylinder by screw thread form
Connection.
5. a kind of marine riser suspension special-purpose nipple as claimed in claim 3, it is characterised in that the end cap is bolted
On the openend end face of the outer barrel；The riser joints are fixed with the inner cylinder by screw thread form to be connected
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720862339.1U CN207017958U (en) | 2017-07-17 | 2017-07-17 | A kind of marine riser hangs special-purpose nipple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720862339.1U CN207017958U (en) | 2017-07-17 | 2017-07-17 | A kind of marine riser hangs special-purpose nipple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207017958U true CN207017958U (en) | 2018-02-16 |
Family
ID=61484662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720862339.1U Withdrawn - After Issue CN207017958U (en) | 2017-07-17 | 2017-07-17 | A kind of marine riser hangs special-purpose nipple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207017958U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191145A (en) * | 2017-07-17 | 2017-09-22 | 中国海洋石油总公司 | A kind of marine riser suspension special-purpose nipple and its application method |
| CN109025852A (en) * | 2018-08-13 | 2018-12-18 | 西南石油大学 | Mechanical marine riser hangs compensation device |
-
2017
- 2017-07-17 CN CN201720862339.1U patent/CN207017958U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191145A (en) * | 2017-07-17 | 2017-09-22 | 中国海洋石油总公司 | A kind of marine riser suspension special-purpose nipple and its application method |
| CN107191145B (en) * | 2017-07-17 | 2023-03-31 | 中国海洋石油集团有限公司 | Special short joint for hanging marine riser and use method thereof |
| CN109025852A (en) * | 2018-08-13 | 2018-12-18 | 西南石油大学 | Mechanical marine riser hangs compensation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC RESEARCH INSTITUTE Co.,Ltd. Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180216 Effective date of abandoning: 20230331 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180216 Effective date of abandoning: 20230331 |