CN103790536A - Expansion cone - Google Patents
Expansion cone Download PDFInfo
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- CN103790536A CN103790536A CN201410003422.4A CN201410003422A CN103790536A CN 103790536 A CN103790536 A CN 103790536A CN 201410003422 A CN201410003422 A CN 201410003422A CN 103790536 A CN103790536 A CN 103790536A
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Abstract
The invention provides an expansion cone comprising a first cone section (1), a second cone section (2) and a third cone section (3). The first, second and third section cones (1, 2 and 3) are sequentially connected along the axis of the expansion cone. A through hole (4) penetrating along the axial direction is arranged inside the expansion cone, the outer diameter of the first cone section (1) is smaller than that of the third cone section (3), and part of the surface, adjacent to the first cone section (1), of the second cone section (2) is part of the surface of an elliptical ball. Friction resistance of the expansion cone during the expansion process can be beneficially lowered, strength of the expansion cone can be enhanced, elasticity of the expansion cone can be guaranteed, and occurrences of unexpected accidents like cracking and too much abrasion caused by long-distance expansion construction can be avoided.
Description
Technical field
The present invention relates to oil exploration equipment field, concrete is a kind of expansion cone using in expansion tube.
Background technology
Bulged tube technology is the new technology being surging forward in recent years, and it can be applicable to the operation process such as drilling well, completion and oil recovery, well workover.Expandable casing patching technology is very ripe at present, expansion tube completion becomes more popular completion program recently, expansion tube length as completion casing is longer, its expansion task difficulty is large, performance requirement to expansion cone is higher, as wear-resistant, high strength, anti-impact force, reliability etc., should have enough elasticity to guarantee the reliability of the impact resistance of swollen cone, there are again enough rigidity and anti-wear performance, guarantee completing of long distance expansion action.The work plane of existing expansion cone instrument is generally conical surface, when work, easily produce built-up edge phenomenon, and be homogenous material entity, the performance raising of expansion cone mainly completes by preferred material and raising Technology for Heating Processing, and the form of the shape of existing expansion cone and structure and homogenous material entity is difficult to reach requirement.
Summary of the invention
Easily produce the technical problem of built-up edge phenomenon in order to solve expansion cone of the prior art.The invention provides a kind of expansion cone, this expansion cone contributes to reduce the resistance of expansion process mill, the intensity that both can strengthen swollen cone guarantees the elasticity of swollen cone simultaneously, can avoid again causing because of the construction of expanding of long distance that expansion cone is broken, the too much generation of the fortuitous event such as wearing and tearing.
The present invention is that the technical scheme that solves its technical problem employing is: a kind of expansion cone, comprise the first paragraph cone cylinder, second segment cone cylinder and the 3rd section of cone cylinder that connect successively along the axis of this expansion cone, in this expansion cone, be provided with the through hole connecting vertically, the external diameter of first paragraph cone cylinder is less than the external diameter of the 3rd section of cone cylinder, the part surface that the part surface that second segment cone cylinder is adjacent with first paragraph cone cylinder is oval-shaped ball.
In a preferred embodiment, this expansion cone is located in expansion tube, and the angle theta between the tangent line that the part surface of its oval-shaped ball contacts with expansion tube and expansion tube axis is 13～15 degree.
In a preferred embodiment, second segment cone cylinder is cylindrical shape with a 3rd section of cone adjacent part.
In a preferred embodiment, the external diameter of this cylinder is less than the external diameter of the 3rd section of cone cylinder.
In a preferred embodiment, second segment cone cylinder is provided with multiple alloy blocks.
In a preferred embodiment, the bottom of alloy block is arranged in second segment cone cylinder, and the top of alloy block is arranged on outside second segment cone cylinder.
In a preferred embodiment, second segment cone cylinder is cylindrical shape with a 3rd section of cone adjacent part, the external diameter of this cylinder is less than the external diameter of the 3rd section of cone cylinder, and the length that alloy block exposes the part of second segment cone cylinder equals the difference between the external diameter of this cylinder and the external diameter of the 3rd section of cone cylinder.
In a preferred embodiment, alloy block is cylindrical, and the axis of this cylinder is perpendicular to the axis of this expansion cone.
In a preferred embodiment, the compressive strength of this alloy block is greater than the compressive strength of second segment cone cylinder.
In a preferred embodiment, the 3rd section of cone cylinder is provided with at least one for placing the annular groove of sealing ring.
Feature and the advantage of expansion cone of the present invention are:
1, expansion cone of the present invention, the part surface adjacent with first paragraph cone cylinder by its second segment cone cylinder is set to after the part surface of oval-shaped ball, expansion cone will become mitigation to the expansion process of expansion tube, the part surface of oval-shaped ball and gauge section rounding off, expansion process is prolonged sphere reach, effectively relax whole expansion process, thereby can avoid expansion process to produce built-up edge phenomenon.This expansion cone effectively avoids conical surface stress to concentrate, and relaxes expansion process, and evenly expansion cone stress, prevents that swollen cone from breaking.
2, expansion cone of the present invention, former swollen cone homogenous material entity structure is become to the structure of embedding hard alloy blocks, adopt the stronger matrix of elastoplasticity, inlay the alloy block that hardness is very high, by the two material property combination, reach wear-resistant, shock resistance, high-intensity effect, obtain more excellent expansion cone performance.
3, expansion cone of the present invention, the netted establishment of alloy block is arranged in expansion cone, reaches the effect of the full conical surface expansion of the swollen cone of entity, reduces expansion contact area simultaneously, reduces expansion frictional force.
4, expansion cone of the present invention, alloy block gap is full of lubricating grease, effectively improves the lubricating condition of the swollen cone conical surface, reduces frictional force, reduces the bulbs of pressure.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, expansion cone of the present invention is described in further detail.
Fig. 1 is the front view of the expansion cone in the first embodiment.
Fig. 2 is the part surface of the corresponding oval-shaped ball of second segment cone cylinder of the expansion cone in the first embodiment.
Fig. 3 is the front view of the expansion cone in the second embodiment.
Fig. 4 is the sectional view along A-A direction in Fig. 3.
Fig. 5 is the stereogram of the expansion cone in the second embodiment.
Wherein 1. first paragraph cone cylinders, 2. second segment cone cylinder, 3. the 3rd section of cone cylinder, 4. through hole, 5. alloy block, 6. annular groove.
The specific embodiment
Below in conjunction with accompanying drawing, expansion cone of the present invention is described in further detail.A kind of expansion cone, expansion cone is cylindrical shape, comprise the first paragraph cone cylinder 1 connecting successively along the axis of this expansion cone, second segment cone cylinder 2 and the 3rd section of cone cylinder 3, in this expansion cone, be provided with the through hole 4 connecting vertically, the external diameter of first paragraph cone cylinder 1 is less than the external diameter of the 3rd section of cone cylinder 3, the part surface that the part surface that second segment cone cylinder 2 is adjacent with first paragraph cone cylinder 1 is oval-shaped ball, as shown in Figure 1, the surface configuration that is right section of A of second segment cone cylinder 2 is a part for oval ball surface, the right section of A representing with solid line in Fig. 2 as right section of A in Fig. 1 is to corresponding, dotted line in Fig. 2 represents the oval-shaped ball at this right section of A place.
In prior art, the work plane of expansion cone is taper, and the conical surface and gauge section are by round-corner transition, and knuckle still exists shear action to expansion tube, easily occurs built-up edge.It is unfavorable that the generation of built-up edge is expanded to long distance.Secondly, former swollen wimble structure can form stress in rounded transition in expansion process and concentrate, and the stress that conical surface front end bears is less; Swollen cone stress distribution inequality.The all or part of part that can be arranged to oval-shaped ball for second segment cone cylinder 2, the part surface that second segment cone cylinder 2 is adjacent with first paragraph cone cylinder 1 is set to after a part for oval-shaped ball, expansion cone will become mitigation to the expansion process of expansion tube, the part surface of oval-shaped ball and gauge section rounding off, expansion process is prolonged sphere reach, effectively relax whole expansion process, thereby can avoid expansion process to produce built-up edge phenomenon.
In one embodiment, as shown in Figure 4, this expansion cone is located in expansion tube 7, angle theta between the tangent line that the part surface of its oval-shaped ball contacts with expansion tube 7 and expansion tube 7 axis is 13～15 degree, also be, in expansion cone is located in expansion tube 7 and while starting expansion tube 7 to expand operation, the point that first part surface of the oval-shaped ball of this expansion cone contacts with expansion tube 7 inner tubal walls is point of contact, and the angle theta between the tangent line at this point of contact place and the axis of expansion tube 7 is 13～15 degree.Second segment cone cylinder 2 comprises two sections of cone cylinders, and as shown in Figure 1, second segment cone cylinder 2 is divided into right section of A and left section of B by dotted line, and second segment cone cylinder 2 and a 3rd section of cone 3 adjacent part are cylindrical shape, and left section of B is cylindrical shape.The external diameter of this cylinder is slightly less than the external diameter of the 3rd section of cone cylinder 3.
In one embodiment, second segment cone cylinder 2 is provided with multiple alloy blocks 5.The bottom of alloy block 5 is arranged in second segment cone cylinder 2, and the top of alloy block 5 is arranged on outside second segment cone cylinder 2, as shown in Fig. 3, Fig. 4 and Fig. 5.Former swollen cone homogenous material entity structure is become to the structure of embedding hard alloy blocks 5, adopt elastoplasticity stronger matrix, inlay the alloy block 5 that hardness is very high, by the two material property combination, reach wear-resistant, shock resistance, high-intensity effect.Finally, alloy block is to bore the surface of cylinder 2 with the mode proper alignment of similar close-packed hexagonal lattice at second segment, forms in the axial direction full-scale circle configurations, can reach the effect of the full conical surface expansion of the swollen cone of entity.
In addition, second segment cone cylinder 2 and a 3rd section of cone 3 adjacent part are cylindrical shape, the external diameter of this cylinder is less than the external diameter of the 3rd section of cone cylinder 3, the external diameter that is left section of B in Fig. 1 is less than the 3rd section of external diameter of boring cylinder 3, the length that alloy block 5 exposes the part of second segment cone cylinder 2 equals the difference between the external diameter of this cylinder and the external diameter of the 3rd section of cone cylinder 3, the external diameter that the length that alloy block 5 exposes the part of second segment cone cylinder 2 equals left section of B and the 3rd section of difference of boring between an external diameter of tins 3.
Preferred alloy piece 5 is cylindrical, and the axis of this cylinder is perpendicular to the axis of this expansion cone.The compressive strength of this alloy block 5 is greater than the compressive strength of second segment cone cylinder 2.In addition, in expansion process, alloy block gap is full of lubricating grease, effectively improves the lubricating condition of the swollen cone conical surface, reduces frictional force, reduces the bulbs of pressure.The 3rd section of cone cylinder 3 is also provided with at least one for placing the annular groove 6 of sealing ring.
The above, be only specific embodiments of the invention, can not limit the scope that invention is implemented with it, thus the displacement of its equivalent assemblies, or equivalent variations and the modification done according to scope of patent protection of the present invention, all should still belong to the category that this patent is contained.Between technical scheme and technical scheme, all can use by independent assortment in addition, between the technical characterictic and technical characterictic in the present invention, between technical characterictic and technical scheme.
Claims (10)
1. an expansion cone, it is characterized in that, comprise the first paragraph cone cylinder (1), second segment cone cylinder (2) and the 3rd section of cone cylinder (3) that connect successively along the axis of this expansion cone, in this expansion cone, be provided with the through hole (4) connecting vertically, the external diameter of first paragraph cone cylinder (1) is less than the external diameter of the 3rd section of cone cylinder (3), the part surface that the part surface that second segment cone cylinder (2) is adjacent with first paragraph cone cylinder (1) is oval-shaped ball.
2. expansion cone according to claim 1, is characterized in that: this expansion cone is located in expansion tube, and the angle theta between the tangent line that the part surface of its oval-shaped ball contacts with expansion tube and expansion tube axis is 13～15 degree.
3. expansion cone according to claim 1, is characterized in that: the part that second segment cone cylinder (2) is adjacent with the 3rd section of cone cylinder (3) is cylindrical shape.
4. expansion cone according to claim 3, is characterized in that: the external diameter of this cylinder is less than the external diameter of the 3rd section of cone cylinder (3).
5. expansion cone according to claim 1, is characterized in that: second segment cone cylinder (2) is provided with multiple alloy blocks (5).
6. expansion cone according to claim 5, is characterized in that: the bottom of alloy block (5) is arranged in second segment cone cylinder (2), and the top of alloy block (5) is arranged on outside second segment cone cylinder (2).
7. expansion cone according to claim 6, it is characterized in that: the part that second segment cone cylinder (2) is adjacent with the 3rd section of cone cylinder (3) is cylindrical shape, the external diameter of this cylinder is less than the external diameter of the 3rd section of cone cylinder (3), and the length that alloy block (5) exposes the part of second segment cone cylinder (2) equals the difference between the external diameter of this cylinder and the external diameter of the 3rd section of cone cylinder (3).
8. expansion cone according to claim 5, is characterized in that: alloy block (5) is for cylindrical, and the axis of this cylinder is perpendicular to the axis of this expansion cone.
9. expansion cone according to claim 5, is characterized in that: the compressive strength of this alloy block (5) is greater than the compressive strength of second segment cone cylinder (2).
10. expansion cone according to claim 1, is characterized in that: the 3rd section of cone cylinder (3) is provided with at least one for placing the annular groove (6) of sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410003422.4A CN103790536B (en) | 2014-01-03 | 2014-01-03 | Expansion cone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410003422.4A CN103790536B (en) | 2014-01-03 | 2014-01-03 | Expansion cone |
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| Publication Number | Publication Date |
|---|---|
| CN103790536A true CN103790536A (en) | 2014-05-14 |
| CN103790536B CN103790536B (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410003422.4A Active CN103790536B (en) | 2014-01-03 | 2014-01-03 | Expansion cone |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998000626A1 (en) * | 1996-07-01 | 1998-01-08 | Shell Internationale Research Maatschappij B.V. | Method for expanding a steel tubing and well with such a tubing |
| US20040055759A1 (en) * | 2001-10-24 | 2004-03-25 | Sivley Robert S. | Apparatus and method to expand casing |
| WO2004026073A2 (en) * | 2002-09-20 | 2004-04-01 | Enventure Global Technlogy | Rotating mandrel for expandable tubular casing |
| CN201047263Y (en) * | 2007-06-21 | 2008-04-16 | 新疆石油管理局井下作业公司 | Ball expansion awl |
| CN201474640U (en) * | 2009-07-14 | 2010-05-19 | 中国石油集团西部钻探工程有限公司克拉玛依钻井工艺研究院 | Novel spiral expansion cone |
| CA2734023A1 (en) * | 2010-03-15 | 2011-09-15 | Weatherford/Lamb, Inc. | Methods and apparatus relating to expansion tools for tubular strings |
| CN202300266U (en) * | 2011-10-31 | 2012-07-04 | 中国石油化工股份有限公司 | Operation device for expansion casing with equal borehole diameter |
| CN103089186A (en) * | 2011-11-03 | 2013-05-08 | 中国石油天然气股份有限公司 | Plug-in type expansion head |
| CN203729934U (en) * | 2014-01-03 | 2014-07-23 | 中国石油天然气股份有限公司 | Expansion cone |
-
2014
- 2014-01-03 CN CN201410003422.4A patent/CN103790536B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998000626A1 (en) * | 1996-07-01 | 1998-01-08 | Shell Internationale Research Maatschappij B.V. | Method for expanding a steel tubing and well with such a tubing |
| US20040055759A1 (en) * | 2001-10-24 | 2004-03-25 | Sivley Robert S. | Apparatus and method to expand casing |
| WO2004026073A2 (en) * | 2002-09-20 | 2004-04-01 | Enventure Global Technlogy | Rotating mandrel for expandable tubular casing |
| CN201047263Y (en) * | 2007-06-21 | 2008-04-16 | 新疆石油管理局井下作业公司 | Ball expansion awl |
| CN201474640U (en) * | 2009-07-14 | 2010-05-19 | 中国石油集团西部钻探工程有限公司克拉玛依钻井工艺研究院 | Novel spiral expansion cone |
| CA2734023A1 (en) * | 2010-03-15 | 2011-09-15 | Weatherford/Lamb, Inc. | Methods and apparatus relating to expansion tools for tubular strings |
| CN202300266U (en) * | 2011-10-31 | 2012-07-04 | 中国石油化工股份有限公司 | Operation device for expansion casing with equal borehole diameter |
| CN103089186A (en) * | 2011-11-03 | 2013-05-08 | 中国石油天然气股份有限公司 | Plug-in type expansion head |
| CN203729934U (en) * | 2014-01-03 | 2014-07-23 | 中国石油天然气股份有限公司 | Expansion cone |
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| CN103790536B (en) | 2017-05-10 |
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