CN103867154A - Mechanical expansion tool - Google Patents
Mechanical expansion tool Download PDFInfo
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- CN103867154A CN103867154A CN201210552009.4A CN201210552009A CN103867154A CN 103867154 A CN103867154 A CN 103867154A CN 201210552009 A CN201210552009 A CN 201210552009A CN 103867154 A CN103867154 A CN 103867154A
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Abstract
The invention provides a mechanical expansion tool which comprises a body and an axial flow passage formed in the body. The body comprises a roughly arc functional section, a constant-diameter gauge protection section and a connecting section for being connected with a drilling tool, wherein the functional section comprises a plurality of angular slots formed in the outer surface; and ring parts are respectively arranged in all the angular slots.
Description
Technical field
The invention belongs to field of oil drilling, be specifically related to a kind of mechanical type bloat tool for the Bellows Technology that expands.
Background technology
Expansion Bellows Technology is a kind of new technology being applied in drilling well, completion or well workover work progress.In this technology, bellows tubing string is lowered in well, make tubing string permanent deformation as pipe in the mode of fluid power and mechanical force, thereby realize packing bad ground and repair and damaged sleeve pipe, still keep former borehole size simultaneously thereafter.Wherein, expansion bellows, after hydraulic expansion, need to be lowered to mechanical expanding device bellows is carried out to mechanical swelling and reparation.
But in the time running into complex situations, expansion bellows possibly cannot reach the size of expectation in hydraulic expansion process.At this moment the mode that, need to utilize mechanical swelling by expansion bellows expansion to designing requirement.Because expansion ripple pipe string exists the undersized parts such as box cupling, transit joint, and expansion ripple pipe string may have the part of breaking, and this just requires tube expander to possess the function of mechanical swelling and the function of reparation simultaneously.But existing bloat tool generally only has the simple function of mechanical swelling or milling, run into damaged section or junction is difficult to pass through in expansion process, and the wearing and tearing to damaged body are not larger in milling process.
CN101555775A discloses a kind of repairing casing instrument and method thereof.This patent documentation has especially disclosed a kind of pilot milling cone, and its front end adopts conical structure, but does not wherein lay milling material.The rear end of pilot milling cone adopts righting cylinder, to play centralizing function in construction.Although this instrument possesses milling function, in the time carrying out mechanical swelling, can cause larger wearing and tearing to the body of expansion tube.
Summary of the invention
The object of this invention is to provide a kind of mechanical type bloat tool, the in the situation that of expansion bellows being carried out to mechanical swelling in down-hole, in the time running into joint or damaged part, this mechanical swelling instrument can pass through in milling, and in the time running into intact expansion ripple tube body, can carry out mechanical swelling, and do not damage as much as possible the body of expansion.
According to the invention provides a kind of mechanical type bloat tool, comprise body and be arranged on intrinsic axial flow channel.Body comprises the functional section of circular arc roughly, the gauge section of constant diameter, and linkage section for being connected with drilling tool.Wherein, functional section comprises some circumferential slots that are arranged in external surface, and ring is all installed in each circumferential slot.
In one embodiment, by sintered cemented carbide particle, integral type is made in circumferential slot ring.Preferably, the external surface of ring and the external surface of functional section flush haply.
In one embodiment, on the external surface of gauge section, be provided with some strip projections of extending vertically.Strip projection can partly be embedded in gauge section, partly protrudes from the external surface of gauge section.Preferably, strip projection starts from the end adjacent with functional section of gauge section, but does not extend to the end adjacent with linkage section of gauge section.
In one embodiment, on the external surface of body, be provided with the outer flow passage extending vertically.For example, outer flow passage can comprise the perforation runner that penetrates functional section and gauge section, and penetrates gauge section but end at the non-penetrating runner in functional section.In a specific embodiment, non-penetrating runner extends to and is no more than the most free-ended ring of close body.In another specific embodiment, the width that connects runner is greater than the width of non-penetrating runner.
Mechanical type bloat tool according to the present invention has the function of milling and mechanical swelling simultaneously, can carry out milling and reparation, the damage to expansion ripple tube body as far as possible can reduce mechanical swelling again time to damaged section.
In addition, because the alloy rings of conical section and body are in same arc surface, and the size of the front end of ring is little, thereby in the body that is conducive to guide bloat tool to enter bellows.Arc surface has reduced the contact area between bloat tool and expansion bellows, has reduced rotation torque, prevents from occurring between bloat tool and expansion bellows the situation of locking.
Simple in structure according to mechanical type bloat tool of the present invention, abrasion resistance is strong, and easily operation, has higher intensity.
Accompanying drawing explanation
Below with reference to accompanying drawing, the present invention is further detailed.
Fig. 1 has shown according to mechanical type bloat tool of the present invention.
Fig. 2 is the sectional view of the bloat tool of mechanical type shown in Fig. 1.
Parts identical in all figure are represented by identical Reference numeral.Accompanying drawing not drawn on scale.
The specific embodiment
Fig. 1 and 2 has shown according to mechanical type bloat tool 20 of the present invention, the internal fluid channels 9 that it comprises body 1 and runs through body 1.Body 1 for example can be made up of drill rod materials.In certain embodiments, body can be made up of E75, X95, G105 steel.
As shown in Figure 2, body 1 comprises three parts, i.e. the gauge section 7 of functional section 6, constant diameter and linkage section 8.Linkage section 8 for example can be with internal thread, for being connected with drilling tool (not shown).But easily understand, linkage section 8 also can be connected with drilling tool by other conventional mode.
The functional section 6 of body 1 is also referred to as arc section, and it is the parts of circular arc roughly, has along the direction of the free end 11 towards body 1 diameter reducing gradually.As shown in Figure 1, on the functional section 6 of body 1, be provided with several isolated circumferential slots 2.At the interior ring (not shown) that is all furnished with of each circumferential slot 2.Described ring for example can be made in circumferential slot 2 by the mode integral type of sintered cemented carbide particle.The external surface of ring is arranged to flush with the outer peripheral face of functional section 6, between the two, forms smooth transition.Like this, each ring self is also the parts of circular arc roughly, and has along the direction of the free end 11 towards body 1 diameter reducing gradually.The ring of carbide alloy can be during operation for realizing milling function.
Due to the arc-shaped structure of functional section 6, be therefore arranged on the ring minimum in first circumferential slot of free end 11 of the most close body 1, and along increasing gradually to the direction of gauge section 7.Like this, near free-ended ring size minimum, each ring self also has the diameter reducing gradually towards free end 11 simultaneously, thereby is conducive to guide bloat tool 20 to enter into body.In addition, the arc-shaped structure of functional section 6 reduces the contact area between mechanical type bloat tool 20 and expansion bellows, thereby causes rotation torque to reduce, and has prevented from thus occurring between bloat tool and expansion bellows the situation of locking.
According to one embodiment of present invention, the axial spacing between each circumferential slot 2 can be uniform.In further embodiments, the axial spacing between each circumferential slot 2 also can change.For example, when the some parts in the functional section 6 of main body 1 mainly take the function that realizes milling when main, so just the axial spacing between the circumferential slot in this region 2 can be arranged to less than the axial spacing between the circumferential slot 2 in other region.Thus, the distance between hard alloy collar members is also less, thereby has improved the function of milling.
The quantity of strip projection 5 can need to select as the case may be.The setting of strip projection 5 can guarantee that the body after expansion there will not be rebound phenomenon.
According to the present invention, on the external surface of the body 1 of mechanical type bloat tool 20, be also provided with the outer flow passage extending vertically.Preferably, outer flow passage comprises and connects runner 3, connects the gauge section 7 of whole body 1 and the runner of functional section 6, and comprises non-penetrating runner 4, starts to extend but ends at the runner of the inside of functional section 6 from gauge section 7.Connect runner 3 and non-penetrating runner 4 and arrange being upwards spaced apart from each other in week, be preferably upwards evenly spaced apart each other in week.As required, can alternately arrange multiple perforation runners 3 and multiple non-penetrating runner 4.By perforation runner 3 and the non-penetrating runner 4 alternately arranged, can strengthen the bulk strength of mechanical type bloat tool 20, guarantee good mobility simultaneously.Especially, non-penetrating runner 4 starts to extend but ends at the inside of functional section 6 from gauge section 7, be in the upper part of non-penetrating runner 4 functional section 6 that do not extend to the little and wall thickness of external diameter, make the intensity of whole functional section 6 can be not weakened, advantageously guaranteed carrying out smoothly of expansion and milling operation.
In addition, in certain embodiments, connect runner 3 and be designed to have than the larger width of non-penetrating runner 4.This upper part for functional section 6 also needs to contact with body and expands with the situation of milling operation is very favourable.
Below introduce according to the using method of mechanical type bloat tool 20 of the present invention.Before being lowered to bloat tool, first determine the section configuration of expansion bellows in down-hole by the mode of test drilling or printing.According to section configuration, can determine the size of the bloat tool of required selection, and according to the size of space between actual conditions reasonable layout hard alloy collar members and the quantity of hard alloy collar members.
Afterwards, will be connected with top drilling tool by linkage section according to mechanical type bloat tool of the present invention, be lowered into precalculated position.In low the pressure of the drill and slow-revving situation, make the front end of bloat tool enter into the body of expansion bellows.When the body of bloat tool enters after the body of expansion bellows completely, improve rotating speed, expansion ripple tube body is carried out to mechanical swelling.When moment of torsion increases, occur suppressing, when bouncing of drilling tool, illustrate that hard alloy collar members carries out milling reparation to the damaged portion of expansion bellows.
When mechanical type bloat tool is during down to the lower end cap of expansion bellows, trip out bloat tool, be lowered to junk mill milling lower end cap, then be lowered to the bloat tools such as ball tube expander by expansion bellows expansion to design size.
Simple in structure according to mechanical type bloat tool of the present invention, abrasion resistance is strong, and has higher intensity.Particularly, in the indefinite situation of damaged part, can complete once milling and expansion operation according to mechanical type bloat tool of the present invention.
Although with reference to some embodiment, invention has been described, but be appreciated that without departing from the scope of the invention, can carry out various improvement or replacement to it.Especially, only otherwise have structural conflict, the feature in each embodiment all can mutually combine, and the combined type feature forming is still within the scope of the present invention.The present invention is not limited to disclosed specific embodiment in literary composition, but comprises all technical schemes in the scope that falls into claim.
Claims (11)
1. a mechanical type bloat tool, comprise body and be arranged on intrinsic axial flow channel, wherein, described body comprises the functional section of circular arc roughly, the gauge section of constant diameter, and linkage section for being connected with drilling tool, described functional section comprises some circumferential slots that are arranged in external surface, and ring is all installed in each circumferential slot.
2. mechanical type bloat tool according to claim 1, is characterized in that, by sintered cemented carbide particle, integral type is made in circumferential slot described ring.
3. mechanical type bloat tool according to claim 1 and 2, is characterized in that, the external surface of described ring flushes with the external surface of described functional section.
4. according to the mechanical type bloat tool described in any one in the claims, it is characterized in that, on the external surface of described gauge section, be provided with some strip projections of extending vertically.
5. mechanical type bloat tool according to claim 4, is characterized in that, described strip projection is partly embedded in gauge section, partly protrudes from the external surface of gauge section.
6. mechanical type bloat tool according to claim 5, is characterized in that, described strip projection starts from the end adjacent with functional section of described gauge section, but does not extend to the end adjacent with linkage section of gauge section.
7. according to the mechanical type bloat tool described in any one in the claims, it is characterized in that, on the external surface of described body, be provided with the outer flow passage extending vertically.
8. mechanical type bloat tool according to claim 7, is characterized in that, described outer flow passage comprises the perforation runner that penetrates described functional section and gauge section.
9. mechanical type bloat tool according to claim 8, is characterized in that, described outer flow passage also comprises non-penetrating runner, and it penetrates described gauge section but ends in described functional section.
10. mechanical type bloat tool according to claim 9, is characterized in that, described non-penetrating runner extends to and is no more than the most free-ended ring of close body.
11. according to the mechanical type bloat tool described in claim 9 or 10, it is characterized in that, the width of described perforation runner is greater than the width of described non-penetrating runner.
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CN201210552009.4A CN103867154B (en) | 2012-12-18 | 2012-12-18 | A kind of mechanical type expands instrument |
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CN201210552009.4A CN103867154B (en) | 2012-12-18 | 2012-12-18 | A kind of mechanical type expands instrument |
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CN103867154A true CN103867154A (en) | 2014-06-18 |
CN103867154B CN103867154B (en) | 2016-08-24 |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201047263Y (en) * | 2007-06-21 | 2008-04-16 | 新疆石油管理局井下作业公司 | Ball expansion awl |
WO2011083066A1 (en) * | 2010-01-07 | 2011-07-14 | Saltel Industries | Method for repairing a liner hanger, device and blank for implementation thereof |
CN202348194U (en) * | 2011-12-19 | 2012-07-25 | 东北石油大学 | Impact type casing damage pipe shaper |
CN202544787U (en) * | 2012-04-18 | 2012-11-21 | 田清东 | Novel oil well casing shaper |
CN202560138U (en) * | 2012-02-24 | 2012-11-28 | 中国石油化工股份有限公司 | Variable-diameter mechanical tube expander |
-
2012
- 2012-12-18 CN CN201210552009.4A patent/CN103867154B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201047263Y (en) * | 2007-06-21 | 2008-04-16 | 新疆石油管理局井下作业公司 | Ball expansion awl |
WO2011083066A1 (en) * | 2010-01-07 | 2011-07-14 | Saltel Industries | Method for repairing a liner hanger, device and blank for implementation thereof |
CN202348194U (en) * | 2011-12-19 | 2012-07-25 | 东北石油大学 | Impact type casing damage pipe shaper |
CN202560138U (en) * | 2012-02-24 | 2012-11-28 | 中国石油化工股份有限公司 | Variable-diameter mechanical tube expander |
CN202544787U (en) * | 2012-04-18 | 2012-11-21 | 田清东 | Novel oil well casing shaper |
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CN103867154B (en) | 2016-08-24 |
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