CN104153720B - The segment protect device that contacts to earth of oil transportation standpipe - Google Patents
The segment protect device that contacts to earth of oil transportation standpipe Download PDFInfo
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- CN104153720B CN104153720B CN201410207215.0A CN201410207215A CN104153720B CN 104153720 B CN104153720 B CN 104153720B CN 201410207215 A CN201410207215 A CN 201410207215A CN 104153720 B CN104153720 B CN 104153720B
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- standpipe
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- contacting
- sleeve pipe
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 19
- 238000009826 distribution Methods 0.000 claims abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 8
- 230000002411 adverse Effects 0.000 abstract description 4
- 238000005406 washing Methods 0.000 abstract description 4
- 239000002689 soil Substances 0.000 description 12
- 206010016256 fatigue Diseases 0.000 description 7
- 230000006378 damage Effects 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000004224 protection Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000000386 athletic effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The invention discloses a kind of segment protect device that contacts to earth of oil transportation standpipe, described in contact to earth segment protect device 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 outside and axial support spring be positioned on sleeve pipe inner peripheral surface of the section of contacting to earth standpipe; The radial spring group of several distributions of length direction along the section of contacting to earth standpipe is provided with between sleeve pipe and the section of contacting to earth standpipe, each radial spring group comprises several radial springs pair, radial spring lays respectively at the section of contacting to earth standpipe both sides to comprising two and is positioned at two radial springs on same axial line, and radial spring two ends are connected with sleeve pipe with the section of contacting to earth standpipe respectively.The present invention has the application life that improve the section of contacting to earth standpipe and whole oil transportation standpipe; Effectively inhibit the formation of its vicinity vortex, decrease ocean current to washing away at the bottom of pipe, and minimizing washes away the groove of formation to the feature of the adverse effect of touchdown point.
Description
Technical field
The present invention 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 device that contacts 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 connecting offshore boring island and subsea wellheads, riser systems plays 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, the contact of standpipe and submarine soil becomes the region with certain length from point, is called " section of contacting to earth standpipe ".
The fatigue failure of standpipe is the principal mode that standpipe is destroyed, and the touchdown point of standpipe is subject to the effect of Platform movement and environmental load simultaneously, is the position being 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 usually, lacks enough protections, and particularly for the seabed that rigidity is larger, the fatigue damage of touchdown point is very serious.
Chinese patent mandate publication number: CN00219373.6; authorize publication date on February 3rd, 2000; disclose a kind of outer steel inner plastic petroleum pipe protective outer ring; be made up of plastic whorl bladder layer and steel plate jacket layer; plastic whorl bladder layer outside wall surface is equipped with fixing inserted block; in steel plate jacket layer, corresponding position is equipped with fixed jack, is fixed between plastic whorl bladder layer and steel plate jacket layer by inserted block and jack.The weak point of this utility model is, function singleness, can not be used for protecting the section of the contacting to earth standpipe of oil transportation standpipe.
Summary of the invention
Goal of the invention of the present invention 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 device that contacts 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 present invention is by the following technical solutions:
The segment protect device that contacts to earth of oil transportation standpipe, described oil transportation standpipe comprises pendency section standpipe that the horizontal segment standpipe that is connected with the oil-out of sub-sea drilled wells is connected with offshore boring island and at horizontal segment standpipe and the section of the contacting to earth standpipe that dangles between section standpipe; The described segment protect device that contacts to earth 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 outside and axial support spring be positioned on sleeve pipe inner peripheral surface of the section of contacting to earth standpipe; The radial spring group of several distributions of length direction along the section of contacting to earth standpipe is provided with between sleeve pipe and the section of contacting to earth standpipe, each radial spring group comprises several radial springs pair, radial spring lays respectively at the section of contacting to earth standpipe both sides to comprising two and is positioned at two radial springs on same axial line, and radial spring two ends are connected with sleeve pipe with the section of contacting to earth standpipe respectively.
Sleeve pipe of the present invention is for the protection of the section of contacting to earth standpipe; the section of contacting to earth standpipe is avoided 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 body of water and submarine soil, form the space of the protection section of a contacting to earth standpipe.
Support spring provides certain pretension for the section of contacting to earth standpipe, and the rigidity of the section of contacting to earth standpipe is increased, and reaches the effect reducing 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, tension uniform can be passed to the section of contacting to earth standpipe by axially extended support spring, reduce the excessive stresses of moment to the destruction of the section of contacting to earth standpipe.
The radial spring group of arranging along riser length direction, reduce the motion amplitude of standpipe in radial direction on the one hand, prevent the impact wreckage of the section of contacting to earth standpipe and sleeve pipe, formed on the other hand " three-dimensional sea bed " that one has certain rigidity, the section of contacting to earth standpipe no longer directly contacts with seabed soil, radial spring defines one " flexible sea bed ", and the fatigue injury of sea bed to " touchdown point " of the section of contacting to earth standpipe will reduce greatly.
Therefore, the present invention has and avoids oil transportation standpipe and contact with the direct of seabed soil, improves the application life of the section of contacting to earth standpipe and whole oil transportation standpipe; Structure is simple, is 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; Be provided with tube wall spring and ball in container cavity, tube wall outer spring end contacts with ball; Ball one end is exposed outside sleeve pipe outer peripheral face.
The setting of container cavity, tube wall spring and ball makes the frictional movement of sleeve pipe on sea bed become movement of rolling, and reduce further the stress be 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 are arranged.
Spiral strake has the effect upsetting the current acted on sleeve pipe, its vicinity is made to be difficult to form whirlpool, reduce the vortex-induced vibration of sleeve pipe, suppress the formation of whirlpool to reduce simultaneously and touch washing away of base area, thus minimizing washes away the groove of formation to the adverse effect of standpipe touchdown point, improves the application life of the section of contacting to earth standpipe and whole oil transportation standpipe.
As preferably, radial spring group is connected with the section of contacting to earth standpipe by the standpipe collar be located on the section of contacting to earth standpipe outer peripheral face, is connected with sleeve pipe by the sleeve pipe collar be located on sleeve pipe inner peripheral surface.
As preferably, described sleeve pipe comprises the flaring pipe being located at sleeve pipe two ends, and flaring pipe is connected with the section of contacting to earth standpipe by flange.
As preferably, radial spring is to being 2 to 4, and the circumferencial direction of each radial spring to the cross section along the section of contacting to earth standpipe is uniformly distributed.
Therefore, the present invention has following beneficial effect: avoid oil transportation standpipe and contact with the direct of seabed soil, improves the application life of the section of contacting to earth standpipe and whole oil transportation standpipe; Effectively inhibit the formation of its vicinity vortex, decrease ocean current to washing away at the bottom of pipe, and minimizing washes away the groove of formation to the adverse effect of touchdown point; Structure is simple, is easy to transformation, with low cost.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation that oil transportation standpipe of the present invention is in using state;
Fig. 2 is a kind of structural representation of the segment protect device that contacts to earth of the present invention;
Fig. 3 is the another kind of structural representation of the segment protect device that contacts to earth of the present invention;
Fig. 4 is a kind of structural representation of the tube wall of sleeve pipe of the present invention, container cavity, tube wall spring and ball.
In figure: horizontal segment standpipe 1, pendency section 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, radial spring are to 19.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Embodiment is as shown in Figure 1 a kind of segment protect device that contacts to earth of oil transportation standpipe, and described oil transportation standpipe comprises pendency section standpipe 2 that the horizontal segment standpipe 1 that is connected with the oil-out of sub-sea drilled wells is connected with offshore boring island 16 and at horizontal segment standpipe and the section of the contacting to earth standpipe 3 that dangles between section standpipe; Offshore boring island is positioned on sea 14, and horizontal segment standpipe is positioned on sea bed 15;
As shown in Figure 2, the segment protect device that contacts to earth 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 outside and axial support spring 6 be positioned on sleeve pipe inner peripheral surface of the section of contacting to earth standpipe; The radial spring group 7 of the length direction distribution along the section of contacting to earth standpipe is provided with between sleeve pipe and the section of contacting to earth standpipe, each radial spring group comprises 2 radial springs to 19, radial spring lays respectively at the section of contacting to earth standpipe both sides to comprising two and is positioned at two radial springs 8 on same axial line, 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 of 3 block gaps settings.
Sleeve pipe comprises the flaring pipe 12 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 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; Be provided with tube wall spring 10 and ball 11 in container cavity, tube wall outer spring end contacts with ball; Ball one end is exposed outside sleeve pipe outer peripheral face.
As shown in Figure 3, radial spring is to being 2, and the circumferencial direction of each radial spring to the cross section along the section of contacting to earth standpipe is uniformly distributed.
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 be located on the section of contacting to earth standpipe outer peripheral face, is connected with sleeve pipe by the sleeve pipe collar 18 be located on sleeve pipe inner peripheral surface.
The setting of sleeve pipe avoids the section of contacting to earth standpipe and directly contacts with submarine soil, and provides space for support spring and radial spring group, and is separated with outside body of water and submarine soil by the section of contacting to earth standpipe, forms the space of the protection section of a contacting to earth standpipe.
Support spring provides certain pretension for the section of contacting to earth standpipe, and the rigidity of the section of contacting to earth standpipe is increased, and reaches the effect reducing 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, tension uniform can be passed to the section of contacting to earth standpipe by axially extended support spring, reduce the excessive stresses of moment to the destruction of the section of contacting to earth standpipe.
The radial spring group of arranging along riser length direction, reduce the motion amplitude of standpipe in radial direction on the one hand, prevent the impact wreckage of the section of contacting to earth standpipe and sleeve pipe, formed on the other hand " three-dimensional sea bed " that one has certain rigidity, the section of contacting to earth standpipe no longer directly contacts with seabed soil, radial spring defines one " flexible sea bed ", and the fatigue injury of sea bed to " touchdown point " of the section of contacting to earth standpipe will reduce greatly.
Therefore, the present invention has following beneficial effect: avoid oil transportation standpipe and contact with the direct of seabed soil, improves the application life of the section of contacting to earth standpipe and whole oil transportation standpipe; Effectively inhibit the formation of its vicinity vortex, decrease ocean current to washing away at the bottom of pipe, and minimizing washes away the groove of formation to the adverse effect of touchdown point; Structure is simple, is easy to transformation, with low cost.
Should be understood that the present embodiment is only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Claims (5)
1. the segment protect device that contacts to earth of oil transportation standpipe, described oil transportation standpipe comprises the horizontal segment standpipe (1) be connected with the oil-out of sub-sea drilled wells, the pendency section standpipe (2) be connected with offshore boring island (16) and at horizontal segment standpipe and the section of the contacting to earth standpipe (3) that dangles between section standpipe; It is characterized in that, described in contact to earth segment protect device 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 outside and axial support spring (6) be positioned on sleeve pipe inner peripheral surface of the section of contacting to earth standpipe; The radial spring group (7) of several distributions of length direction along the section of contacting to earth standpipe is provided with between sleeve pipe and the section of contacting to earth standpipe, each radial spring group comprises several radial springs to (19), radial spring lays respectively at the section of contacting to earth standpipe both sides to comprising two and is positioned at two radial springs (8) on same axial line, and radial spring two ends are connected with sleeve pipe with the section of contacting to earth standpipe respectively; The outer peripheral face of described sleeve pipe is provided with the spiral strake of some block gaps setting.
2. the segment protect device that contacts 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; Be provided with tube wall spring (10) and ball (11) in container cavity, tube wall outer spring end contacts with ball; Ball one end is exposed outside sleeve pipe outer peripheral face.
3. the segment protect device that contacts to earth of oil transportation standpipe according to claim 1; it is characterized in that; radial spring group is connected with the section of contacting to earth standpipe by the standpipe collar (13) be located on the section of contacting to earth standpipe outer peripheral face, is connected with sleeve pipe by the sleeve pipe collar (18) be located on sleeve pipe inner peripheral surface.
4. the segment protect device that contacts to earth of oil transportation standpipe according to claim 1, is characterized in that, described sleeve pipe comprises the flaring pipe (12) being located at sleeve pipe two ends, and flaring pipe is connected with the section of contacting to earth standpipe by flange (17).
5. the segment protect device that contacts to earth of the oil transportation standpipe according to claim 1 or 2 or 3 or 4, is characterized in that, radial spring is to being 2 to 4, and the circumferencial direction of each radial spring to the cross section along the section of contacting to earth standpipe is uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410207215.0A CN104153720B (en) | 2014-05-15 | 2014-05-15 | The segment protect device that contacts to earth of oil transportation standpipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410207215.0A CN104153720B (en) | 2014-05-15 | 2014-05-15 | The segment protect device that contacts to earth of oil transportation standpipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104153720A CN104153720A (en) | 2014-11-19 |
| CN104153720B true CN104153720B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410207215.0A Active CN104153720B (en) | 2014-05-15 | 2014-05-15 | The segment protect device that contacts to earth of oil transportation standpipe |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU875243A1 (en) * | 1979-06-15 | 1981-10-23 | Научно-исследовательский и проектный институт "Гипроморнефтегаз" | Device for investigating bottom soil by probing |
| CN201129580Y (en) * | 2007-12-21 | 2008-10-08 | 柳林 | Double-layer oil delivery pipe |
| GB2457497A (en) * | 2008-02-15 | 2009-08-19 | Pilot Drilling Control Ltd | Flow stop valve controlled by pressure difference |
| CN202467699U (en) * | 2012-01-10 | 2012-10-03 | 李德全 | Telescopic type casing centralizer |
| CN202706943U (en) * | 2012-07-20 | 2013-01-30 | 中国石油集团测井有限公司生产测井中心 | Oil extraction tubular column tail end protective short joint |
| CN103573191A (en) * | 2012-07-25 | 2014-02-12 | 中国石油化工股份有限公司 | Sleeve |
-
2014
- 2014-05-15 CN CN201410207215.0A patent/CN104153720B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU875243A1 (en) * | 1979-06-15 | 1981-10-23 | Научно-исследовательский и проектный институт "Гипроморнефтегаз" | Device for investigating bottom soil by probing |
| CN201129580Y (en) * | 2007-12-21 | 2008-10-08 | 柳林 | Double-layer oil delivery pipe |
| GB2457497A (en) * | 2008-02-15 | 2009-08-19 | Pilot Drilling Control Ltd | Flow stop valve controlled by pressure difference |
| CN202467699U (en) * | 2012-01-10 | 2012-10-03 | 李德全 | Telescopic type casing centralizer |
| CN202706943U (en) * | 2012-07-20 | 2013-01-30 | 中国石油集团测井有限公司生产测井中心 | Oil extraction tubular column tail end protective short joint |
| CN103573191A (en) * | 2012-07-25 | 2014-02-12 | 中国石油化工股份有限公司 | Sleeve |
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| Publication number | Publication date |
|---|---|
| CN104153720A (en) | 2014-11-19 |
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