CN202300344U - Folding type diameter-variable expansion tool for expansion tube - Google Patents
Folding type diameter-variable expansion tool for expansion tube Download PDFInfo
- Publication number
- CN202300344U CN202300344U CN2011204210640U CN201120421064U CN202300344U CN 202300344 U CN202300344 U CN 202300344U CN 2011204210640 U CN2011204210640 U CN 2011204210640U CN 201120421064 U CN201120421064 U CN 201120421064U CN 202300344 U CN202300344 U CN 202300344U
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- Prior art keywords
- expansion
- cone
- reducing
- diameter
- variable
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Abstract
The utility model discloses a folding type diameter-variable expansion tool for an expansion tube. The expansion tool comprises two parts, namely a fixed cone and a diameter-variable cone, wherein the fixed cone is of a cone through hole structure with a narrow upper part and a wide lower part; and the diameter-variable cone mainly comprises reference diameter-variable cone sheets and back-out diameter-variable cone sheets, and the structure and the appearance of the diameter-variable cone are consistent, and the conical degree of the expansion conical surface is 9-15 degrees. The expansion tool is provided with a plurality of reference expansion cone sheets which are combined on the fixed cone; when in expansion, under the action of external force, the expansion cone sheets radially expand along the tip conical surface of the expansion tip cone, thus the expansion tool achieves the diameter varying aim; and the back-out diameter-variable cone sheets are backed out outward and form an expansion cone with a complete circumference together with the reference diameter-variable cone sheets. The folding type diameter-variable expansion tool for the expansion tube has the advantages that the folding type diameter-variable expansion tool for the expansion tube can realize diameter-variable expansion under the action of the external force, the expansion quantity of a tube body is increased greatly, and the well diameter utilization ratio is improved; and moreover, the folding type diameter-variable expansion tool for the expansion tube has simple structure and small expansion force, is easy to machine, and can be applied to various sleeve tubes and a barefoot well hole with a regular well wall.
Description
Technical field
But the utility model relates to the collapsible reducing bloat tool that a kind of expansion tube of underground work field of tool is used, and is applicable to oil drilling completion field, but makes expansion tube realize that reducing expands.
Background technology
Along with the continuous progressive deep-well reservoir development 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 the 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 like saline bed and some loose sand oil reservoirs, just are difficult to continue to creep into.
Permanent plastic deformation radially can take place in the body of expandable tubular, to reach the purpose of remarkable reduction drilling completion cost, optimization casing programme and raising oil drilling, completion and workover treatment level.Patent CN200420053900.4 discloses the bloat tool of a kind of petroleum works with expandable tubular, is a kind of up-narrow and down-wide cone through-hole structure, realizes hose expansion through hydraulic pressure.Patent 200620130884.3 has been announced a kind of the pressure of the drill drive-type bloat tool.These two kinds of bloat tools all can be realized the expansion of expansion tube body, but but its swell increment is limited and can not realize the purpose that reducing expands, inconveniently in the large scale expansion tube, uses, restricted large scale bulged tube technology and the development that waits the hole diameter drilling technology.
The utility model content
The problem that the purpose of the utility model exists to prior art; Provide a kind of and can obtain bigger swell increment; Thereby obtain the large scale expansion tube and solve complicated drilling problem at the open hole well intraocular, but or the expansion tube of hole diameter drilling technology such as realization with collapsible reducing bloat tool.
But this expansion tube comprises fixed cone and reducing awl two parts with collapsible reducing bloat tool, and wherein: fixed cone is positioned at reducing awl top, and fixed cone is up-narrow and down-wide cone through-hole structure, and Surface Machining has tapering; The reducing wimble fraction is made up of back-out reducing awl sheet two parts of several benchmark reducing awl sheets and equivalent amount; Benchmark reducing awl sheet active groups is combined on the fixed cone; Screwing out reducing awl sheet is connected on the benchmark reducing awl sheet with connecting pin; Make the preceding back-out reducing awl sheet that expands place several benchmark reducings to bore sheets and form in the circle, can bore the back-out of sheet inner side edge around the benchmark reducing under external force, with the complete cone of benchmark reducing awl sheet expansion back composition.
The activity combination of benchmark reducing awl sheet and fixed cone is to make up through T type plush copper and T type groove mode; Benchmark reducing awl sheet is consistent with back-out reducing conical shape and external diameter, and its appearance conical surface tapering is 9～15 °.
Benchmark reducing awl sheet is 3-6 with screwing out reducing awl sheet quantity.
The advantage of the utility model is: the utility model can be realized the reducing of bloat tool; And the uniformity that can keep expansion tube to expand, realize that through fixed cone and reducing awl 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 can be reinforced continued to well bore and creep into; The utility model is simple in structure, is easy to processing and manufacturing, and expansion force is little, can be adapted at using in the regular bore hole well of the various cased hole completion wells and the borehole wall.
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;
Among the figure, 1 fixed cone, 2 T type plush coppers and the combination of T type groove, 3 connect pin, 4 benchmark reducings awl sheet, 5 screw out reducing awl sheet.
The specific embodiment
Combine Figure of description that the utility model is done further to describe at present.
Like Fig. 1 ~ shown in Figure 3, but expansion tube comprises fixed cone 1 and reducing awl two parts with collapsible reducing bloat tool.Fixed cone 1 is positioned at reducing awl top, and fixed cone 1 is up-narrow and down-wide cone through-hole structure, and Surface Machining has tapering, cooperates for being sealed and matched with expansion tube.The main through-hole structure that is made up of reducing awl sheet of reducing awl, reducing awl sheet is made up of benchmark reducing awl sheet 4 and back-out reducing awl sheet 5 two parts.Have some benchmark reducing awl sheets 4 that can reducing, all be combined in the T type groove of fixed cone 1 through T type plush copper 2, benchmark reducing awl sheet 4 under external force can be movable in proper range along T type groove.Screwing out reducing awl sheet 5 usefulness connecting pins 3 nails is connected on the benchmark reducing awl sheet 4; Screwing out reducing awl sheet 5 before expanding places several (present embodiment is elected 3 as) benchmark reducing awl sheets 4 to form in the circle; Can screw out around benchmark reducing awl sheet 4 inner side edges under external force; Form complete cone (constituting complete cylinder) with benchmark reducing awl sheet 4 expansion backs, make the external diameter of bloat tool reach maximum value like Fig. 3.
Like Fig. 1, shown in Figure 2, benchmark reducing awl sheet 4 and back-out reducing awl sheet 5 shapes and external diameter of reducing awl are consistent, and its expansion cone face cone degree a is 9～15 °, adopts this tapering, can obtain optimum friction factor and expansion force.
But the utility model is mainly used in the reducing of realizing expansion tube to expand; Before the described bloat tool closure; Reducing awl is received on the less external diameter, so that can put it in the expansion tube transmitter, screws out reducing awl sheet 5 and places in the circumference that benchmark reducing awl sheet 4 formed.During the bloat tool construction, under external force, screw out reducing awl sheet 5 and outwards screw out; Benchmark reducing awl sheet 4 expands outwardly simultaneously, and final and back-out reducing awl sheet 5 is formed a complete collapsible expansion cone, realizes the reducing of bloat tool; And the uniformity that can keep expansion tube to expand, thereby realize that through fixed cone 1 and reducing awl 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 can be reinforced continued to well bore and creep into, and can be adapted at using in the regular bore hole well of the various cased hole completion wells and the borehole wall.
Claims (3)
1. but expansion tube comprises fixed cone and reducing awl two parts with collapsible reducing bloat tool, it is characterized in that: fixed cone is positioned at reducing awl top, and fixed cone is up-narrow and down-wide cone through-hole structure, and Surface Machining has tapering; The reducing wimble fraction is made up of back-out reducing awl sheet two parts of several benchmark reducing awl sheets and equivalent amount; Benchmark reducing awl sheet active groups is combined on the fixed cone; Screwing out reducing awl sheet is connected on the benchmark reducing awl sheet with connecting pin; Make the preceding back-out reducing awl sheet that expands place several benchmark reducings to bore sheets and form in the circle, can bore the back-out of sheet inner side edge around the benchmark reducing under external force, with the complete cone of benchmark reducing awl sheet expansion back composition.
2. but expansion tube as claimed in claim 1 is characterized in that with collapsible reducing bloat tool: the activity combination of benchmark reducing awl sheet and fixed cone is to make up through T type plush copper and T type groove mode; Benchmark reducing awl sheet is consistent with back-out reducing conical shape and external diameter, and its appearance conical surface tapering is 9～15 °.
3. but according to claim 1 or claim 2 expansion tube is characterized in that with collapsible reducing bloat tool: benchmark reducing awl sheet is 3-6 with screwing out reducing awl sheet quantity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204210640U CN202300344U (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 |
|---|---|---|---|
| CN2011204210640U CN202300344U (en) | 2011-10-31 | 2011-10-31 | Folding type diameter-variable expansion tool for expansion tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202300344U true CN202300344U (en) | 2012-07-04 |
Family
ID=46369266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204210640U Withdrawn - After Issue CN202300344U (en) | 2011-10-31 | 2011-10-31 | Folding type diameter-variable expansion tool for expansion tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202300344U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089184A (en) * | 2011-10-31 | 2013-05-08 | 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 CN2011204210640U patent/CN202300344U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089184A (en) * | 2011-10-31 | 2013-05-08 | 中国石油化工股份有限公司 | Folding type diameter-variable expansion tool for expansion tube |
| CN103089184B (en) * | 2011-10-31 | 2015-06-17 | 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120704 Effective date of abandoning: 20150617 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120704 Effective date of abandoning: 20150617 |
|
| RGAV | Abandon patent right to avoid regrant |