CN203925331U - The segment protect structure of contacting to earth of oil transportation standpipe - Google Patents
The segment protect structure of contacting to earth of oil transportation standpipe Download PDFInfo
- Publication number
- CN203925331U CN203925331U CN201420251194.8U CN201420251194U CN203925331U CN 203925331 U CN203925331 U CN 203925331U CN 201420251194 U CN201420251194 U CN 201420251194U CN 203925331 U CN203925331 U CN 203925331U
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- Prior art keywords
- standpipe
- earth
- contacting
- section
- sleeve pipe
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Abstract
The utility model discloses a kind of segment protect structure of contacting to earth of oil transportation standpipe; described oil transportation standpipe comprises the horizontal segment standpipe being connected with the oil-out of sub-sea drilled wells, the section of the dangling standpipe being connected with offshore boring island and the section of the contacting to earth standpipe between horizontal segment standpipe and the section of dangling standpipe, described in contact to earth segment protect structure comprise be located at the section of contacting to earth standpipe outside sleeve pipe, be located at the ringwise cavity of cross section between sleeve pipe and the section of contacting to earth standpipe and be positioned at the axial support spring that the section of contacting to earth standpipe is outside and contact with internal surface of casing.The utlity model has the application life of having improved the section of contacting to earth standpipe and whole oil transportation standpipe; Effectively suppress the sleeve pipe formation of vortex around, reduced ocean current to the washing away of the pipe end, and reduced the feature of the adverse effect of the groove that washes away formation to touchdown point.
Description
Technical field
The utility model relates to exploitation of offshore oil and gas technical field; especially relate to a kind of for the isolation section of contacting to earth standpipe and sea bed; reduce the wear rate of the section of contacting to earth standpipe, effectively improve the segment protect structure of contacting to earth of the oil transportation standpipe in the application life of the section of contacting to earth standpipe and whole oil transportation standpipe.
Background technology
Along with offshore oil and gas development of resources develops to deep-sea, as the visual plant that connects offshore boring island and subsea wellheads, riser systems is being played the part of the role of outbalance in ocean petroleum developing.Oil transportation standpipe touchdown point is the position that standpipe touches sea bed at first, along with the motion of standpipe, the contact position of standpipe and submarine soil can constantly change, and forms new touchdown point, standpipe becomes the region with certain length with contacting from point of submarine soil, is called " section of contacting to earth standpipe ".
The fatigue failure of standpipe is the destroyed principal mode of standpipe, and the touchdown point of standpipe is subject to the effect of platform motion and environmental load simultaneously, is the position that is the most easily subject to fatigue damage in standpipe, directly affects the application life of oil transportation standpipe.
At present, oil transportation standpipe directly contacts with submarine soil conventionally, lacks enough protections, and particularly, for the larger seabed of rigidity, the fatigue damage of touchdown point is very serious.
Chinese patent mandate publication number: CN00219373.6; authorize open day on February 3rd, 2000; a kind of outer steel inner plastic petroleum pipe protective outer ring is disclosed; formed by plastic whorl bladder layer and steel plate jacket layer; in plastic whorl bladder layer outside wall surface, be equipped with fixing inserted block; in steel plate jacket layer, corresponding position is equipped with fixed jack, between plastic whorl bladder layer and steel plate jacket layer, fixes by inserted block and jack.The weak point of this utility model is that function singleness, can not be used for the section of the contacting to earth standpipe of oil transportation standpipe to protect.
Summary of the invention
Goal of the invention of the present utility model is the deficiency of the section of the contacting to earth standpipe serious wear in order to overcome oil transportation standpipe in prior art; provide a kind of for the isolation section of contacting to earth standpipe and sea bed; reduce the wear rate of the section of contacting to earth standpipe, effectively improve the segment protect structure of contacting to earth of the oil transportation standpipe in the application life of the section of contacting to earth standpipe and whole oil transportation standpipe.
To achieve these goals, the utility model is by the following technical solutions:
The segment protect structure of contacting to earth of oil transportation standpipe, described oil transportation standpipe comprises the horizontal segment standpipe being connected with the oil-out of sub-sea drilled wells, the section of the dangling standpipe being connected with offshore boring island and the section of the contacting to earth standpipe between horizontal segment standpipe and the section of dangling standpipe; The described segment protect structure of contacting to earth comprises is located at the sleeve pipe of the section of contacting to earth standpipe outside, the axial support spring of being located at the ringwise cavity of cross section between sleeve pipe and the section of contacting to earth standpipe and being positioned at the section of contacting to earth standpipe outside and contacting with internal surface of casing; Between sleeve pipe and the section of contacting to earth standpipe, be provided with several radial spring groups along the axial distribution of the section of contacting to earth standpipe, each radial spring group comprises the radial spring that several distribute radially, and radial spring two ends are connected with sleeve pipe with the section of contacting to earth standpipe respectively.
Sleeve pipe of the present utility model is for the protection of the section of contacting to earth standpipe; avoid the section of contacting to earth standpipe directly to contact with submarine soil; and for support spring and radial spring group provide space, and the section of contacting to earth standpipe is separated with outside water body and submarine soil, form the space of the protection section of a contacting to earth standpipe.
Support spring, for the section of contacting to earth standpipe provides certain pretension, increases the rigidity of the section of contacting to earth standpipe, reaches the effect that reduces fatigue failure; Simultaneously, the athletic meeting of offshore boring island structure forms vertical pulling force to touchdown point, make the flexural stress of touchdown point reach peak value, can be by tension uniform by axially extended support spring pass to the section of contacting to earth standpipe, the destruction of the excessive stresses that reduces moment to the section of contacting to earth standpipe.
The radial spring group of arranging along standpipe length direction, reduce on the one hand standpipe at motion amplitude radially, prevent the impact wreckage of the section of contacting to earth standpipe and sleeve pipe, form on the other hand " a three-dimensional sea bed " with certain rigidity, the section of contacting to earth standpipe no longer directly contacts with seabed soil, radial spring has formed one " flexible sea bed ", and the fatigue injury of " touchdown point " of sea bed to the section of contacting to earth standpipe will reduce greatly.
Therefore, the utlity model has and avoided oil transportation standpipe to contact with the direct of seabed soil, improved the application life of the section of contacting to earth standpipe and whole oil transportation standpipe; Simple in structure, be easy to improvement and installation, feature with low cost.
As preferably, the tube wall of described sleeve pipe is provided with several staggered container cavities, and container cavity is perpendicular to sleeve pipe outer peripheral face; In container cavity, be provided with tube wall spring and ball, tube wall spring outer end contacts with ball; Expose outside sleeve pipe outer peripheral face ball one end.
It is mobile that the setting of container cavity, tube wall spring and ball makes the frictional movement of sleeve pipe on sea bed become rolling, further reduced the stress being applied on the section of contacting to earth standpipe.
As preferably, the outer peripheral face of described sleeve pipe is provided with the spiral strake that some block gaps arrange.
Spiral strake has the effect that acts on the current on sleeve pipe of upsetting, make sleeve pipe be difficult to form whirlpool around, reduce the vortex-induced vibration of sleeve pipe, suppress the formation of whirlpool simultaneously, reduce and touch washing away of base area, and reduce the adverse effect of the groove that washes away formation to standpipe touchdown point, the application life of improving the section of contacting to earth standpipe and whole oil transportation standpipe.
As preferably, the quantity of the radial spring in described radial spring group is 4 to 8, and radial spring is uniformly distributed along the circumferencial direction of the cross section of the section of contacting to earth standpipe.
As preferably, described sleeve pipe comprises the flaring pipe of being located at sleeve pipe two ends, and flaring pipe is connected with the section of contacting to earth standpipe by flange.
As preferably, each radial spring group is connected with the section of contacting to earth standpipe by the standpipe collar of being located on the section of contacting to earth standpipe outer peripheral face, is connected with sleeve pipe by the sleeve pipe collar of being located on sleeve pipe inner peripheral surface.
Therefore, the utlity model has following beneficial effect: avoided oil transportation standpipe to contact with the direct of seabed soil, improved the application life of the section of contacting to earth standpipe and whole oil transportation standpipe; Effectively suppress the sleeve pipe formation of vortex around, reduced ocean current to managing washing away of the end, and reduced and wash away the groove of formation to the adverse effect of touchdown point; Simple in structure, be easy to transformation, with low cost.
Brief description of the drawings
Fig. 1 is that oil transportation standpipe of the present utility model is in using a kind of structural representation of state;
Fig. 2 is a kind of structural representation of the segment protect structure of contacting to earth of the present utility model;
Fig. 3 is the another kind of structural representation of the segment protect structure of contacting to earth of the present utility model;
Fig. 4 is a kind of structural representation of tube wall, container cavity, tube wall spring and the ball of sleeve pipe of the present utility model.
In figure: horizontal segment standpipe 1, the section of dangling standpipe 2, the section of contacting to earth standpipe 3, sleeve pipe 4, cavity 5, support spring 6, radial spring group 7, radial spring 8, container cavity 9, tube wall spring 10, ball 11, flaring pipe 12, the standpipe collar 13, sea 14, sea bed 15, offshore boring island 16, flange 17, the sleeve pipe collar 18.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Embodiment is as shown in Figure 1 a kind of segment protect structure of contacting to earth of oil transportation standpipe, and described oil transportation standpipe comprises the horizontal segment standpipe 1 being connected with the oil-out of sub-sea drilled wells, the section of the dangling standpipe 2 being connected with offshore boring island 16 and the section of the contacting to earth standpipe 3 between horizontal segment standpipe and the section of dangling standpipe; Offshore boring island is positioned on sea 14, and horizontal segment standpipe is positioned on sea bed 15;
As shown in Figure 2, contact to earth segment protect structure comprise be located at the section of contacting to earth standpipe outside sleeve pipe 4, be located at the ringwise cavity 5 of cross section between sleeve pipe and the section of contacting to earth standpipe and be positioned at the axial support spring 6 that the section of contacting to earth standpipe is outside and contact with internal surface of casing; Between sleeve pipe and the section of contacting to earth standpipe, be provided with along the radial spring group 7 of the axial distribution of the section of contacting to earth standpipe, each radial spring group comprises 4 radial springs 8 that distribute radially, and radial spring two ends are connected with sleeve pipe with the section of contacting to earth standpipe respectively.The outer peripheral face of sleeve pipe is provided with the spiral strake that 3 block gaps arrange.
As shown in Figure 4, the tube wall of sleeve pipe is provided with staggered container cavity 9, and container cavity is perpendicular to sleeve pipe outer peripheral face; In container cavity, be provided with tube wall spring 10 and ball 11, tube wall spring outer end contacts with ball; Expose outside sleeve pipe outer peripheral face ball one end.
As shown in Figure 3, the quantity of the radial spring in radial spring group is 4, and radial spring is uniformly distributed along the circumferencial direction of the cross section of the section of contacting to earth standpipe.Sleeve pipe comprises the flaring pipe 12 of being located at sleeve pipe two ends, and flaring pipe is connected with the section of contacting to earth standpipe by flange 17.
As shown in Figure 2 and Figure 3, radial spring group is connected with the section of contacting to earth standpipe by the standpipe collar 13 of being located on the section of contacting to earth standpipe outer peripheral face, is connected with sleeve pipe by the sleeve pipe collar 18 of being located on sleeve pipe inner peripheral surface.
The setting of sleeve pipe has avoided the section of contacting to earth standpipe directly to contact with submarine soil, and for support spring and radial spring group provide space, and the section of contacting to earth standpipe is separated with outside water body and submarine soil, form the space of the protection section of a contacting to earth standpipe.
Support spring, for the section of contacting to earth standpipe provides certain pretension, increases the rigidity of the section of contacting to earth standpipe, reaches the effect that reduces fatigue failure; Simultaneously, the athletic meeting of offshore boring island structure forms vertical pulling force to touchdown point, make the flexural stress of touchdown point reach peak value, can be by tension uniform by axially extended support spring pass to the section of contacting to earth standpipe, the destruction of the excessive stresses that reduces moment to the section of contacting to earth standpipe.
The radial spring group of arranging along standpipe length direction, reduce on the one hand standpipe at motion amplitude radially, prevent the impact wreckage of the section of contacting to earth standpipe and sleeve pipe, form on the other hand " a three-dimensional sea bed " with certain rigidity, the section of contacting to earth standpipe no longer directly contacts with seabed soil, radial spring has formed one " flexible sea bed ", and the fatigue injury of " touchdown point " of sea bed to the section of contacting to earth standpipe will reduce greatly.
Therefore, the utlity model has following beneficial effect: avoided oil transportation standpipe to contact with the direct of seabed soil, improved the application life of the section of contacting to earth standpipe and whole oil transportation standpipe; Effectively suppress the sleeve pipe formation of vortex around, reduced ocean current to managing washing away of the end, and reduced and wash away the groove of formation to the adverse effect of touchdown point; Simple in structure, be easy to transformation, with low cost.
Should be understood that the present embodiment is only not used in restriction scope of the present utility model for the utility model is described.In addition should be understood that those skilled in the art can make various changes or modifications the utility model after having read the content of the utility model instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Claims (6)
1. the segment protect structure of contacting to earth of oil transportation standpipe, described oil transportation standpipe comprises the horizontal segment standpipe (1) being connected with the oil-out of sub-sea drilled wells, the section of the dangling standpipe (2) being connected with offshore boring island (16) and the section of the contacting to earth standpipe (3) between horizontal segment standpipe and the section of dangling standpipe; It is characterized in that, described in contact to earth segment protect structure comprise be located at the section of contacting to earth standpipe outside sleeve pipe (4), be located at the ringwise cavity of cross section (5) between sleeve pipe and the section of contacting to earth standpipe and be positioned at the axial support spring (6) that the section of contacting to earth standpipe is outside and contact with internal surface of casing; Between sleeve pipe and the section of contacting to earth standpipe, be provided with several radial spring groups (7) along the axial distribution of the section of contacting to earth standpipe, each radial spring group comprises several radial springs distributing radially (8), and radial spring two ends are connected with sleeve pipe with the section of contacting to earth standpipe respectively.
2. the segment protect structure of contacting to earth of oil transportation standpipe according to claim 1, is characterized in that, the tube wall of described sleeve pipe is provided with several staggered container cavities (9), and container cavity is perpendicular to sleeve pipe outer peripheral face; In container cavity, be provided with tube wall spring (10) and ball (11), tube wall spring outer end contacts with ball; Expose outside sleeve pipe outer peripheral face ball one end.
3. the segment protect structure of contacting to earth of oil transportation standpipe according to claim 1, is characterized in that, the outer peripheral face of described sleeve pipe is provided with the spiral strake that some block gaps arrange.
4. the segment protect structure of contacting to earth of oil transportation standpipe according to claim 1, is characterized in that, the quantity of the radial spring in described radial spring group is 4 to 8, and radial spring is uniformly distributed along the circumferencial direction of the cross section of the section of contacting to earth standpipe.
5. the segment protect structure of contacting to earth of oil transportation standpipe according to claim 1, is characterized in that, described sleeve pipe comprises the flaring pipe (12) of being located at sleeve pipe two ends, and flaring pipe is connected with the section of contacting to earth standpipe by flange (17).
6. according to the segment protect structure of contacting to earth of the oil transportation standpipe described in claim 1 or 2 or 3 or 4 or 5; it is characterized in that; each radial spring group is connected with the section of contacting to earth standpipe by the standpipe collar (13) of being located on the section of contacting to earth standpipe outer peripheral face, is connected with sleeve pipe by the sleeve pipe collar (18) of being located on sleeve pipe inner peripheral surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420251194.8U CN203925331U (en) | 2014-05-15 | 2014-05-15 | The segment protect structure of contacting to earth of oil transportation standpipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420251194.8U CN203925331U (en) | 2014-05-15 | 2014-05-15 | The segment protect structure of contacting to earth of oil transportation standpipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203925331U true CN203925331U (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420251194.8U Expired - Fee Related CN203925331U (en) | 2014-05-15 | 2014-05-15 | The segment protect structure of contacting to earth of oil transportation standpipe |
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| CN (1) | CN203925331U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110792398A (en) * | 2019-11-04 | 2020-02-14 | 河海大学 | Device for inhibiting vortex-induced vibration of marine riser |
-
2014
- 2014-05-15 CN CN201420251194.8U patent/CN203925331U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110792398A (en) * | 2019-11-04 | 2020-02-14 | 河海大学 | Device for inhibiting vortex-induced vibration of marine riser |
| CN110792398B (en) * | 2019-11-04 | 2021-09-28 | 河海大学 | Device for inhibiting vortex-induced vibration of marine riser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20150515 |
|
| EXPY | Termination of patent right or utility model |