CN103089184A - Folding type diameter-variable expansion tool for expansion tube - Google Patents
Folding type diameter-variable expansion tool for expansion tube Download PDFInfo
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- CN103089184A CN103089184A CN2011103357303A CN201110335730A CN103089184A CN 103089184 A CN103089184 A CN 103089184A CN 2011103357303 A CN2011103357303 A CN 2011103357303A CN 201110335730 A CN201110335730 A CN 201110335730A CN 103089184 A CN103089184 A CN 103089184A
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Abstract
The invention discloses a folding type diameter-variable expansion tool for an expansion tube. The folding type diameter-variable expansion tool comprises a fixed cone and a reducing cone. The fixed cone is a conical through hole structure with narrow end up. The reducing cone is mainly formed by base reducing conical sheets and unscrewed reducing conical sheets and composed of a conical surface and a cylindrical surface, and transition between the conical surface and the cylindrical surface is realized via a fillet. Since the plurality of base expansion conical sheets are combined and fixed on the fixed cone, during expansion under external force, the expansion conical sheets radially expand along a top conical surface of a expansion top cone, so that the purpose for diameter variation of the expansion tool is realized, and the unscrewed reducing conical sheets are unscrewed outwards to form an entire expansion cone with the base reducing conical sheets. The folding type diameter-variable expansion tool for the expansion tube has the advantage that diameter-variable expansion can be realized under action of external force, expansion amount of the expansion tool is greatly increased, and utilization rate of a well diameter is improved. In addition, the folding type diameter-variable expansion tool for the expansion tube is simple in structure, easy to process manually, small in expansion force, and applicable to utilization in various sleeves and open holes of wells with regular well walls.
Description
Technical field
The present invention relates to the folding type diameter-variable expansion tool that a kind of expansion tube in underground operation tool field is used, be applicable to oil drilling completion field, make expansion tube realize that reducing expands.
Background technology
Along with the exploitation of the continuous progressive deep-well oil reservoir of drilling technology is more and more, traditional well bore exists a large period that drives a well long and produce the very little practical problem of section well after finishing drilling always, and not only drilling cost is high, and is unfavorable for producing and the later stage operation; If the stratum is unstable, borehole collapse, undergauge as saline bed and some loose sand oil reservoirs, just are difficult to continue to creep into.
Permanent plastic deformation radially can occur in the body of expandable tubular, to reach the purpose of remarkable reduction drilling completion cost, Optimize Casing Program and raising oil drilling, completion and workover treatment level.Patent CN200420053900.4 discloses a kind of petroleum works with the bloat tool of expandable tubular, for a kind of up-narrow and down-wide cone through-hole structure, realizes hose expansion by hydraulic pressure.Patent 200620130884.3 has been announced a kind of drilling pressure driven type bloat tool.These two kinds of bloat tools all can be realized the expansion of expansion tube body, but its swell increment is limited and can not realize the purpose that reducing expands, and inconvenience is used in the large scale expansion tube, has restricted large scale bulged tube technology and the development that waits the hole diameter drilling technology.
Summary of the invention
The problem that purpose of the present invention exists for prior art, provide a kind of and can obtain larger swell increment, thereby obtain the large scale expansion tube and solve complicated drilling problem at the open hole well intraocular, or the folding type diameter-variable expansion tool for expansion tube of the hole diameter drilling technology such as realization.
This folding type diameter-variable expansion tool for expansion tube comprises fixed cone and reducing cone two parts, and wherein: fixed cone is positioned at reducing and bores top, and fixed cone is up-narrow and down-wide cone through-hole structure, and Surface Machining has tapering; The reducing wimble fraction is comprised of back-out reducing cone sheet two parts of several benchmark reducing cone sheets and equivalent amount, the activity of benchmark reducing cone sheet is combined on fixed cone, screwing out reducing cone sheet is connected on benchmark reducing cone sheet with the connection pin, making the front back-out reducing cone sheet that expands be placed in several benchmark reducings cone sheets forms in circle, can screw out around benchmark reducing cone sheet inner side edge under external force, form complete cone after expanding with benchmark reducing cone sheet.
The activity combination of benchmark reducing cone sheet and fixed cone is to make up by T-shaped plush copper and T-shaped groove mode; Benchmark reducing cone sheet and back-out reducing conical shape and external diameter are consistent, and its appearance conical degree of conical surface is 9～15 °.
Benchmark reducing cone sheet and back-out reducing cone sheet quantity are 3-6.
The invention has the advantages that: the present invention can realize the reducing of bloat tool, and the uniformity that can keep expansion tube to expand, realize that by fixed cone and reducing cone twin-stage expands, and increases the hose expansion amount greatly, for expansion tube provides maximum boss ratio, improve the hole diameter utilization rate; For caving ground, borehole collapse, undergauge, and some loose sand oil reservoirs continue to creep into after can reinforcing well bore; The present invention is simple in structure, is easy to processing and manufacturing, and expansion force is little, can be adapted at using in the bore hole well of various cased hole completion wells and borehole wall rule.
Description of drawings
Structural representation before 1 one kinds of embodiment reducings of accompanying drawing expand;
Accompanying drawing 2 is upward views of Fig. 1;
Accompanying drawing 3 is upward views after expanding embodiment illustrated in fig. 1;
In figure, 1 fixed cone, 2 T-shaped plush coppers and the combination of T-shaped groove, 3 connect pin, 4 benchmark reducing cone sheets, 5 screw out reducing cone sheet.
The specific embodiment
Now the invention will be further described in conjunction with Figure of description.
As Fig. 1 ~ shown in Figure 3, folding type diameter-variable expansion tool for expansion tube comprises fixed cone 1 and reducing cone two parts.Fixed cone 1 is positioned at reducing and bores top, and fixed cone 1 is up-narrow and down-wide cone through-hole structure, and Surface Machining has tapering, coordinates for being sealed and matched with expansion tube.The through-hole structure that the reducing cone mainly is made of reducing cone sheet, reducing cone sheet are bored sheet 4 by the benchmark reducing and are screwed out reducing cone sheet 5 two parts and form.Have some benchmark reducing cone sheets 4 that can reducing, all be combined in the T-shaped groove of fixed cone 1 by T-shaped plush copper 2, benchmark reducing cone sheet 4 under external force can be movable in proper range along T-shaped groove.Screwing out reducing cone sheet 5 use connecting pin 3 nails is connected on benchmark reducing cone sheet 4, the front back-out reducing cone sheet 5 that expands is placed in several (the present embodiment is elected 3 as) benchmark reducings cone sheets 4 and forms in circle, can screw out around benchmark reducing cone sheet 4 inner side edges under external force, form complete cone (as the cylinder of Fig. 3 complete) after expanding with benchmark reducing cone sheet 4, make the external diameter of bloat tool reach maximum value.
As shown in Figure 1 and Figure 2, the benchmark reducing cone sheet 4 of reducing cone and back-out reducing cone sheet 5 shapes and external diameter are consistent, and its expansion conical degree of conical surface a is 9～15 °, adopts this tapering, can obtain optimum friction factor and expansion force.
The present invention is mainly used in realizing that the reducing of expansion tube expands, and before described bloat tool closure, the reducing cone is received on less external diameter, in order to can put it in the expansion tube transmitter, screws out reducing cone sheet 5 and is placed in the circumference that benchmark reducing cone sheet 4 forms.During the bloat tool construction, under external force, the back-out reducing is bored sheet 5 and is outwards screwed out, and benchmark reducing cone sheet 4 expands outwardly simultaneously, and final and back-out reducing cone sheet 5 forms a complete collapsible expansion cone, realize the reducing of bloat tool, and the uniformity that can keep expansion tube to expand, thereby realize that by fixed cone 1 and reducing cone twin-stage expands, and increases the hose expansion amount greatly, for expansion tube provides maximum boss ratio, improve the hole diameter utilization rate; For caving ground, borehole collapse, undergauge, and some loose sand oil reservoirs continue to creep into after can reinforcing well bore, can be adapted at using in the bore hole well of various cased hole completion wells and borehole wall rule.
Claims (3)
1. folding type diameter-variable expansion tool for expansion tube, comprise fixed cone and reducing cone two parts, and it is characterized in that: fixed cone is positioned at reducing and bores top, and fixed cone is up-narrow and down-wide cone through-hole structure, and Surface Machining has tapering; The reducing wimble fraction is comprised of back-out reducing cone sheet two parts of several benchmark reducing cone sheets and equivalent amount, the activity of benchmark reducing cone sheet is combined on fixed cone, screwing out reducing cone sheet is connected on benchmark reducing cone sheet with the connection pin, making the front back-out reducing cone sheet that expands be placed in several benchmark reducings cone sheets forms in circle, can screw out around benchmark reducing cone sheet inner side edge under external force, form complete cone after expanding with benchmark reducing cone sheet.
2. folding type diameter-variable expansion tool for expansion tube as claimed in claim 1 is characterized in that: it is to make up by T-shaped plush copper and T-shaped groove mode that benchmark reducing cone sheet makes up with the activity of fixed cone; Benchmark reducing cone sheet and back-out reducing conical shape and external diameter are consistent, and its appearance conical degree of conical surface is 9～15 °.
3. folding type diameter-variable expansion tool for expansion tube as claimed in claim 1 or 2 is characterized in that: benchmark reducing cone sheet and to screw out reducing cone sheet quantity be 3-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110335730.3A CN103089184B (en) | 2011-10-31 | 2011-10-31 | Folding type diameter-variable expansion tool for expansion tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110335730.3A CN103089184B (en) | 2011-10-31 | 2011-10-31 | Folding type diameter-variable expansion tool for expansion tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103089184A true CN103089184A (en) | 2013-05-08 |
| CN103089184B CN103089184B (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110335730.3A Active CN103089184B (en) | 2011-10-31 | 2011-10-31 | Folding type diameter-variable expansion tool for expansion tube |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2268986C1 (en) * | 2004-06-17 | 2006-01-27 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Device for tube expansion inside well |
| CN201141289Y (en) * | 2008-01-10 | 2008-10-29 | 西南石油大学 | Novel radius-variable expansion tool |
| CN201753592U (en) * | 2009-06-04 | 2011-03-02 | 中国石化集团胜利石油管理局钻井工艺研究院 | Umbrella type reducing expansion tool used for expansion pipes |
| CN202300344U (en) * | 2011-10-31 | 2012-07-04 | 中国石油化工股份有限公司 | Folding type diameter-variable expansion tool for expansion tube |
-
2011
- 2011-10-31 CN CN201110335730.3A patent/CN103089184B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2268986C1 (en) * | 2004-06-17 | 2006-01-27 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Device for tube expansion inside well |
| CN201141289Y (en) * | 2008-01-10 | 2008-10-29 | 西南石油大学 | Novel radius-variable expansion tool |
| CN201753592U (en) * | 2009-06-04 | 2011-03-02 | 中国石化集团胜利石油管理局钻井工艺研究院 | Umbrella type reducing expansion tool used for expansion pipes |
| CN202300344U (en) * | 2011-10-31 | 2012-07-04 | 中国石油化工股份有限公司 | Folding type diameter-variable expansion tool for expansion tube |
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| CN103089184B (en) | 2015-06-17 |
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