CN104060945A - Inner sleeve pipe for riser pipe - Google Patents
Inner sleeve pipe for riser pipe Download PDFInfo
- Publication number
- CN104060945A CN104060945A CN201410276163.2A CN201410276163A CN104060945A CN 104060945 A CN104060945 A CN 104060945A CN 201410276163 A CN201410276163 A CN 201410276163A CN 104060945 A CN104060945 A CN 104060945A
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- CN
- China
- Prior art keywords
- inner sleeve
- riser pipe
- section steel
- sleeve pipe
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention relates to an inner sleeve pipe for a riser pipe. The inner sleeve pipe for the riser pipe comprises an inner sleeve pipe body and a plurality of section steel compositions, wherein the section steel is arranged on the outer wall of the inner sleeve pipe body at intervals in the axial direction, and each section steel composition consists of a plurality of sections of section steel which are fastened and connected in the circumferential direction of the outer wall of the inner sleeve pipe body and are in circumferential array distribution. The inner sleeve pipe has the advantages that six sections of section steel are welded in the circumferential direction of the outer wall of the inner sleeve pipe body in a circular array way, the section steel and an outer layer sleeve pipe or the inner wall of the riser pipe at the outermost layer form surface contact with uniform load distribution, the spoke effect of the section steel is utilized, and the rigidity and the bending-resistant performance of the riser pipe combination are effectively enhanced, so the ice load bearing capability of the riser pipe combination is improved, and the ice-resistant stability of the riser pipe combination is greatly enhanced under the condition without increasing the operation working procedure and the operation time. The section steel per se has excellent cross sectional moment inertia, so the cross sectional moment inertia of the riser pipe is fundamentally improved, and the bending-resistant performance is also greatly improved.
Description
Technical field
The present invention relates to a kind of inner sleeve, particularly about a kind of inner sleeve for riser pipe.
Background technology
At sea in petroleum exploration and development process, riser pipe is one of most important parts, to setting up drilling channel and supporting wellhead equipment, play very important effect, conventional riser pipe only can be realized the function of setting up passage and supporting wellhead equipment, and its anti-bending strength depends on material, diameter and the wall thickness of riser pipe itself, therefore the intensity between riser pipe and inner each layer of sleeve pipe is limited, and the whole flexing resistance of its combination and anti-ice also can not get ensureing.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of inner sleeve for riser pipe that can improve riser pipe bending resistance and anti-ice performance.
For achieving the above object, the present invention takes following technical scheme: a kind of inner sleeve for riser pipe, it is characterized in that, and it comprises inner sleeve body, and some shaped steel being disposed on vertically on described inner sleeve body outer wall forms; Described in each, shaped steel is comprised of some and is fastenedly connected at described inner sleeve body outer wall circumferentially and be the shaped steel that circumference array distributes and form.
Described shaped steel consists of the i iron consisting of six i iron and forms, and described in each, two wing plates of i iron are all circular-arc.
Described in each, i iron is all fastenedly connected by welding and the outer wall of described inner sleeve body.
Described in each, the length of i iron is 7m～16m.
More than sea level, described in each, the axially spaced-apart of I steel composite is 3m～8m; B.s.l., the axially spaced-apart that described in each, i iron forms is 4m～8m.
The present invention is owing to taking above technical scheme, it has the following advantages: because the present invention circumferentially becomes six i iron of circumference array welding along the outer wall of inner sleeve body, inner sleeve is coaxially plugged in outer layer sleeve or outermost layer riser pipe, i iron contacts with the face that the inwall formation load of outer layer sleeve or outermost layer riser pipe is evenly distributed, utilize the spoke effect of the i iron between inner sleeve body and outer layer sleeve or outermost layer riser pipe, effectively strengthen rigidity and the anti-bending strength of riser pipe combination, thereby improve riser pipe combination and bear the ability that ice carries, in the situation that not increasing flow chart and activity duration, greatly strengthen the anti-ice stability of riser pipe combination.In addition, because i iron itself has superior second moment of area characteristic, therefore fundamentally improve the second moment of area of riser pipe, its flexing resistance is also greatly enhanced.
Accompanying drawing explanation
Fig. 1 is that the integrally-built master of the present invention looks schematic diagram
Fig. 2 is the integrally-built schematic top plan view of the present invention
Fig. 3 is the integrally-built 3 D stereo schematic diagram of the present invention
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in FIG. 1 to 3, the present invention includes a cylindrical inner sleeve body 1, the outer wall of inner sleeve body 1 is circumferentially circumference array and is fastenedly connected six i iron 20, to form an i iron, form 2, two wing plates 200,201 of i iron are circular-arc, to guarantee that each i iron 20 and the outer wall of inner sleeve body 1 and the inwall of outer layer sleeve 3 or outermost layer riser pipe 4 fit completely.
The axial direction equal intervals of inner sleeve body 1 outer wall arranges some i iron and forms 2, and the present invention is coordinated with outer layer sleeve 3 or outermost layer riser pipe 4 coaxial transitions.
In the above-described embodiments, each i iron 20 is fastenedly connected by welding and inner sleeve body 1.
In the above-described embodiments, described in each, the length of i iron 20 is 7m～16m.
In the above-described embodiments, more than sea level, each organizes the 3m～8m that is spaced apart of I steel composite 2; B.s.l., each group i iron forms 2 the 4m～8m that is spaced apart.
The various embodiments described above are only for illustrating the present invention; wherein the structure of each parts, connected mode and manufacture craft etc. all can change to some extent; every equivalents of carrying out on the basis of technical solution of the present invention and improvement, all should not get rid of outside protection scope of the present invention.
Claims (6)
1. for an inner sleeve for riser pipe, it is characterized in that, it comprises inner sleeve body, and some shaped steel being disposed on vertically on described inner sleeve body outer wall forms; Described in each, shaped steel is comprised of some and is fastenedly connected at described inner sleeve body outer wall circumferentially and be the shaped steel that circumference array distributes and form.
2. a kind of inner sleeve for riser pipe as claimed in claim 1, is characterized in that, described shaped steel consists of the i iron consisting of six i iron and forms, and described in each, two wing plates of i iron are all circular-arc.
3. a kind of inner sleeve for riser pipe as claimed in claim 2, is characterized in that, described in each, i iron is all fastenedly connected by welding and the outer wall of described inner sleeve body.
4. a kind of inner sleeve for riser pipe as claimed in claim 2 or claim 3, is characterized in that, described in each, the length of i iron is 7m～16m.
5. a kind of inner sleeve for riser pipe as claimed in claim 2 or claim 3, is characterized in that, more than sea level, described in each, the axially spaced-apart of I steel composite is 3m～8m; B.s.l., the axially spaced-apart that described in each, i iron forms is 4m～8m.
6. a kind of inner sleeve for riser pipe as claimed in claim 4, is characterized in that, more than sea level, described in each, the axially spaced-apart of I steel composite is 3m～8m; B.s.l., the axially spaced-apart that described in each, i iron forms is 4m～8m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410276163.2A CN104060945A (en) | 2014-06-19 | 2014-06-19 | Inner sleeve pipe for riser pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410276163.2A CN104060945A (en) | 2014-06-19 | 2014-06-19 | Inner sleeve pipe for riser pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104060945A true CN104060945A (en) | 2014-09-24 |
Family
ID=51548854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410276163.2A Pending CN104060945A (en) | 2014-06-19 | 2014-06-19 | Inner sleeve pipe for riser pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104060945A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1218529A (en) * | 1996-05-10 | 1999-06-02 | 亨凯尔联合股份有限公司 | Internal reinforcement for hollow structural elements |
| CN101586451A (en) * | 2009-06-23 | 2009-11-25 | 中国海洋石油总公司 | Erection device |
| CN101812975A (en) * | 2010-04-28 | 2010-08-25 | 中国海洋石油总公司 | Anti-icing conductor tube composite structure |
| CN202090847U (en) * | 2011-05-26 | 2011-12-28 | 中国石油大学(北京) | Strengthening riser combination structure |
| CN204200100U (en) * | 2014-06-19 | 2015-03-11 | 中国海洋石油总公司 | For the inner sleeve of riser pipe |
-
2014
- 2014-06-19 CN CN201410276163.2A patent/CN104060945A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1218529A (en) * | 1996-05-10 | 1999-06-02 | 亨凯尔联合股份有限公司 | Internal reinforcement for hollow structural elements |
| CN101586451A (en) * | 2009-06-23 | 2009-11-25 | 中国海洋石油总公司 | Erection device |
| CN101812975A (en) * | 2010-04-28 | 2010-08-25 | 中国海洋石油总公司 | Anti-icing conductor tube composite structure |
| CN202090847U (en) * | 2011-05-26 | 2011-12-28 | 中国石油大学(北京) | Strengthening riser combination structure |
| CN204200100U (en) * | 2014-06-19 | 2015-03-11 | 中国海洋石油总公司 | For the inner sleeve of riser pipe |
Non-Patent Citations (1)
| Title |
|---|
| 谢仁军: "《海上新型组合隔水导管抗冰极限承载力分析》", 《船海工程》 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140924 |