CN103835674B - Oil field fast and safely solid expansion pipe bracing means - Google Patents
Oil field fast and safely solid expansion pipe bracing means Download PDFInfo
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- CN103835674B CN103835674B CN201410075348.7A CN201410075348A CN103835674B CN 103835674 B CN103835674 B CN 103835674B CN 201410075348 A CN201410075348 A CN 201410075348A CN 103835674 B CN103835674 B CN 103835674B
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Abstract
Oil field of the present invention relates to casing repairing device with fast and safely solid expansion pipe bracing means, in the expansion patching tube that damaged oil well casing internal clearance coordinates, insert expander; This expander comprises: it is suitable for reading that the lower end of hydraulic tube connects quick inserted link, quick inserted link lower end embeds in expansion cone, the columnar part of expansion cone and the inwall of expanding chamber closely cooperate, lifting rod from top to bottom matched in clearance to be stifledly fastened and connected through hydraulic tube, fast inserted link, expansion cone, its lower end and the combination end, and the combination end is stifled is embedded after axially having run through piston body, bi-directional slip by mandrel in guide cone holder and be fixedly connected by pin.This device, greatly improves casing repairing operating efficiency, shortens the time between overhauls(TBO), can create significant economic benefit.Its core technology is: after the end of job suppressed by expansion tube, expansion cone goes upward to expansion tube upper port, drives lifting rod to move upward, and lifting rod drives the combination end to block row, the stifled localization part in the combination end can auto-necking and remove spacing, proposes from expansion tube upper end.
Description
Technical field
The present invention relates to casing repairing device, especially oil field fast and safely solid expansion pipe bracing means.
Background technology
Solid expandable Manifold technology is exactly by the bottom of tubing string lower going-into-well, makes tubing permanent deformation by expansion cone with the method for pressure or mechanical force, thus reaches the object increasing well internal diameter.This technology can be used for the operation process such as drilling well, completion and well workover, is considered to one of core technology of 21 century petroleum drilling and mining industry.And in the middle and later periods of oil field development, the damage of sleeve pipe is more and more serious.Casing failure makes oil, well normally produce, and brings have a strong impact on to the overall economic efficiency of whole oil field development.At present, domestic because cover damage shut-in well sum is more than 20000 mouthfuls, overstock shaft building funds 1,000 hundred million yuan, have 5% production capacity to proceed to shut-in well ranks every year, and repair well less than 1/3rd, visible petroleum industry is to the demand pressing degree of expansion tube high-tech product.And the conventional cannula patching tube adopted at present is due to its unreasonable structure, although to some extent solve the diameter after subsidy, repair casing damaged well segment length, subsidize the requirement that the aspects such as reinforcement process cannot meet oil field, and need in work progress first to descend patching tube, the lower tubular column mill logical end, is blocked up and just can complete subsidy sleeve technology again, there is the problems such as well workover complicated construction technique, operation is many, the rear well latus rectum of reparation changes greatly.China Patent Publication No. is the public technology of CN201443325U, to some extent solves the problems referred to above, reaches good effect.But due to design defect, existing problems are, one: due to expansion tube by external force affect resilience excessive time, latus rectum is less than the end and blocks up diameter, the end and stifled can not carry out; Two: there is expansion cone and damage or oil pipe cutting-off, the end is blocked up and carries.Because of the problems referred to above, easily cause to reinforce and subsidize unsuccessfully, large well workover is scrapped, and causes huge economic loss.
Summary of the invention
For the various problems that the conventional cannula subsidy technology adopted at present exists, the invention provides a kind of oil field fast and safely solid expansion pipe bracing means, overcome the deficiency that casing patching technology in the past exists, can sealed-for-life be produced after there is construction technology simple and fast, casing repairing and the borehole size change feature such as little.
Oil field of the present invention fast and safely solid expansion pipe bracing means, is be made up of stifled at the bottom of expansion patching tube, hydraulic tube, expansion cone, lifting rod and combination, in the expansion patching tube that damaged oil well casing internal clearance coordinates, inserts expander; This expander comprises: it is suitable for reading that the lower end of hydraulic tube connects quick inserted link, quick inserted link lower end embeds in expansion cone, the columnar part of expansion cone and the inwall of expanding chamber closely cooperate, cylinder ring week has the top of joint ring, cylinder to be frustum, lifting rod from top to bottom matched in clearance to be stifledly fastened and connected through hydraulic tube, fast inserted link, expansion cone, its lower end and the combination end, and ring week is blocked up by the inwall phase tight fit of joint ring with expanding chamber in the combination end; The combination end is stifled is embedded after axially having run through piston body, bi-directional slip by mandrel in guide cone holder and be fixedly connected by pin, the mandrel of bi-directional slip inside has been set with slip cap, and radial direction was fixed wtih slips positioning key, its end of slips positioning key is connected on the inwall of expansion patching tube described bi-directional slip ring week.
As a further improvement on the present invention, the piston body in blocking up at the bottom of described combination is that ring week is by the inwall phase tight fit of hard joint ring with expanding chamber by least the vertical gap of two panels cambered surface tile fragment is to piecing together into.
As a further improvement on the present invention, described bi-directional slip is by the lonely vertical gap of tile fragment, face of 2-4 block to piecing together into, is provided with the contractile ring of more than a group its ring week.
As a further improvement on the present invention, there is pressure cap to be pressed on the upper edge of each piston body to spelling on mandrel top.
As a further improvement on the present invention, the core bore phase screw socket tight fit of the top limited location nut of described lifting rod, lower end and mandrel.
As a further improvement on the present invention, described expansion cone internal ring wall radial direction is provided with wedge-shaped slot, in inserted link lower end, correspondence position is provided with draw-in groove and is built in jump ring at groove.
Oil field of the present invention fast and safely solid expansion pipe bracing means, reasonable in design, greatly improves casing repairing operating efficiency, shortens the time between overhauls(TBO), can create significant economic benefit.Its core technology is: after the end of job suppressed by expansion tube, and expansion cone goes upward to expansion tube upper port, drives lifting rod to move upward, lifting rod drives the combination end to block row, the stifled localization part in the combination end can auto-necking and remove spacing, proposes, move upward in process if stifled at the combination end from expansion tube upper end, because certain reason is obstructed, when exceeding certain force, safety pin cuts off, the stifled decomposition in the combination end, at the bottom of back drop, still can ensure the success of expansion reinforcing technology.So this device one is quick, be embodied in automatic inserted link connection speed fast, the end is blocked up has linkage pull rod to drive the up proposition of expansion cone, need not transfer tubing string for the second time and salvage or milling; Two is safety, because be combination end bridging structure, no matter any situation, all there will not be the end to block up fault in stuck middle expansion tube, guarantees to reinforce and subsidize successfully.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is that the present invention combines the enlarged drawing blocked up at the end.
Detailed description of the invention
Below in conjunction with accompanying drawing 1, accompanying drawing 2 to oil field of the present invention fast and safely solid expansion pipe bracing means, elaborate:
Embodiment 1
Oil field of the present invention fast and safely solid expansion pipe bracing means, is be made up of expansion patching tube 1, hydraulic tube 2, expansion cone 3, lifting rod 4 and the combination end stifled 5, in the expansion patching tube 1 that damaged oil well casing 6 internal clearance coordinates, inserts expander; This expander comprises: it is suitable for reading that the lower end of hydraulic tube 2 connects quick inserted link 21, quick inserted link 21 lower end embeds in expansion cone 3, cylinder 7 part of expansion cone 3 and the inwall of expanding chamber 15 closely cooperate, there is joint ring 8 in cylinder 7 ring week, the top of cylinder 7 is frustum, lifting rod 4 from top to bottom matched in clearance is fastened and connected with the combination end stifled 5 through hydraulic tube 2, fast inserted link 21, expansion cone 3, its lower end, and 5 ring weeks were blocked up for by the inwall phase tight fit of joint ring 9 with expanding chamber 15 in the combination end; The combination end stifled 5, has embedded after axially having run through piston body 11, bi-directional slip 12 from top to bottom by mandrel 10 in guide cone holder 13 and has been fixedly connected by pin 14, and the mandrel 10 of bi-directional slip 12 inside has been set with slip cap 16.Radial direction was fixed wtih slips positioning key 17, its end of slips positioning key 17 is connected on the inwall of expansion patching tube 1 described bi-directional slip 12 ring week.
Embodiment 2
Oil field of the present invention fast and safely solid expansion pipe bracing means, is be made up of expansion patching tube 1, hydraulic tube 2, expansion cone 3, lifting rod 4 and the combination end stifled 5, in the expansion patching tube 1 that damaged oil well casing 6 internal clearance coordinates, inserts expander; This expander comprises: it is suitable for reading that the lower end of hydraulic tube 2 connects quick inserted link 21, quick inserted link 21 lower end embeds in expansion cone 3, cylinder 7 part of expansion cone 3 and the inwall of expanding chamber 15 closely cooperate, there is joint ring 8 in cylinder 7 ring week, the top of cylinder 7 is frustum, matched in clearance is through hydraulic tube 2, fast inserted link 21, expansion cone 3 from top to bottom for lifting rod 4, and the lower end of lifting rod 4 was fastened and connected with the combination end stifled 5.Be provided with wedge-shaped slot in the internal ring wall radial direction of expansion cone 3, correspondence position is provided with draw-in groove and is built in jump ring at groove in inserted link 21 lower end.
At the bottom of described combination, stifled 5 is embedded after axially having run through piston body 11, bi-directional slip 12 from top to bottom by mandrel 10 in guide cone holder 13 and be fixedly connected by pin 14, and the mandrel 10 of bi-directional slip 12 inside has been set with slip cap 16.Mandrel 10 top has pressure cap 19 to be pressed on the upper edge of each piston body 11 to spelling.The combination end, is blocked up, and because possessing bidirectional-movement function, reinforcing process only once need be thrown in tubing string and can be completed.And pin 14, in expansion process, when because of various being obstructed, after pin is cut-off, can by expansion cone and the end stifled smoothly on to carry or change after decomposing shaft bottom.
Described piston body 11 is that ring week is by the inwall phase tight fit of hard joint ring 9 with expanding chamber 15 by least the vertical gap of two panels cambered surface tile fragment is to piecing together into.
Described bi-directional slip 12 is to piecing together into by the lonely vertical gap of tile fragment, face of 2-4 block, be provided with the contractile ring 18 of more than a group its ring week, radial direction was fixed wtih slips positioning key 17, its end of slips positioning key 17 is connected on the inwall of expansion patching tube 1 the two end ring weeks up and down of bi-directional slip 12.
The core bore phase screw socket tight fit of the top limited location nut 20 of lifting rod 4, lower end and mandrel 10.
When oil well casing 6 certain is damaged, this device is transferred in sleeve pipe, make expansion cone is moved patching tube expanded to closely cooperate inputting highly pressurised liquid in hydraulic tube with sleeve pipe, when the stop nut of upper port and lifting rod that expansion cone rises to expansion tube contacts, drive lifting rod is up, make stifled both having blocked up at the bottom of combination of the present invention in the end be separated to upper port with expansion tube, and complete the reinforcing subsidy of damaged sleeve pipe.
Use this device, realize single and completed lower tubular column subsidy technology, changing needs secondary to rise at the bottom of lower tubular column milling stifledly just to complete casing reinforcement subsidy technology, raising casing repairing operating efficiency one times at present.
Claims (6)
1. oil field fast and safely solid expansion pipe bracing means, be block up (5) by expansion patching tube (1), hydraulic tube (2), expansion cone (3), lifting rod (4) and the combination end to form, it is characterized in that inserting expander in the expansion patching tube (1) coordinated at damaged oil well casing (6) internal clearance, this expander comprises: it is suitable for reading that the lower end of hydraulic tube (2) connects quick inserted link (21), quick inserted link (21) lower end embeds in expansion cone (3), cylinder (7) part of expansion cone (3) closely cooperates with the inwall of expanding chamber (15), there is joint ring (8) in cylinder (7) ring week, the top of cylinder (7) is frustum, lifting rod (4) from top to bottom matched in clearance passes hydraulic tube (2), quick inserted link (21), expansion cone (3), its lower end is fastened and connected with the combination end stifled (5), the combination end in stifled (5) ring week is by the inwall phase tight fit of joint ring (9) with expanding chamber (15), the combination end stifled (5), has axially run through piston body (11), bi-directional slip (12) by mandrel (10) to embed afterwards in guide cone holder (13) and to be fixedly connected by pin (14), the mandrel (10) of bi-directional slip (12) inside has been set with slip cap (16), and radial direction was fixed wtih slips positioning key (17), slips positioning key (17) its end is connected on the inwall of expansion patching tube (1) described bi-directional slip (12) ring week.
2. oil field as claimed in claim 1 fast and safely solid expansion pipe bracing means, it is characterized in that the piston body (11) combined is that ring week is by the inwall phase tight fit of hard joint ring (9) with expanding chamber (15) by least the vertical gap of two panels cambered surface tile fragment is to piecing together at the end stifled (5).
3. oil field as claimed in claim 1 fast and safely solid expansion pipe bracing means, is characterized in that bi-directional slip (12) is by the lonely vertical gap of tile fragment, face of 2-4 block to piecing together into, being provided with the contractile ring (18) of more than a group its ring week.
4. oil field as claimed in claim 1 fast and safely solid expansion pipe bracing means, is characterized in that mandrel (10) top has pressure cap (19) to be pressed on the upper edge of each piston body (11) to spelling.
5. oil field as claimed in claim 1 fast and safely solid expansion pipe bracing means, is characterized in that the core bore phase screw socket tight fit of top limited location nut (20) of lifting rod (4), lower end and mandrel (10).
6. oil field as claimed in claim 1 fast and safely solid expansion pipe bracing means, is characterized in that the internal ring wall radial direction of expansion cone (3) is provided with wedge-shaped slot, correspondence position is provided with draw-in groove and is built in jump ring at groove in inserted link (21) lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410075348.7A CN103835674B (en) | 2014-03-04 | 2014-03-04 | Oil field fast and safely solid expansion pipe bracing means |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410075348.7A CN103835674B (en) | 2014-03-04 | 2014-03-04 | Oil field fast and safely solid expansion pipe bracing means |
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| CN103835674A CN103835674A (en) | 2014-06-04 |
| CN103835674B true CN103835674B (en) | 2016-03-02 |
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| CN201410075348.7A Active CN103835674B (en) | 2014-03-04 | 2014-03-04 | Oil field fast and safely solid expansion pipe bracing means |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503701A (en) * | 2017-08-31 | 2017-12-22 | 中国石油大学(华东) | A kind of casing damaged well light-wall pipe patch device |
| CN111485845B (en) * | 2019-01-29 | 2022-05-10 | 中国石油天然气股份有限公司 | Casing patching device |
| CN110242238A (en) * | 2019-07-24 | 2019-09-17 | 屈波 | Liner set composite for pipeline |
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| CN1594631A (en) * | 2004-07-01 | 2005-03-16 | 陈玉如 | Expanding metal material and bulged tube device for petroleum oil well |
| CN2883657Y (en) * | 2005-09-30 | 2007-03-28 | 余金陵 | Mending tool for broken steel tubes of oil/gas/water well |
| CN200943458Y (en) * | 2006-08-29 | 2007-09-05 | 甘肃兰金民用爆炸高新技术公司 | Deep hole shaft explosion reshaping device |
| CN101210485A (en) * | 2006-12-25 | 2008-07-02 | 长庆石油勘探局 | Design method of expansion sleeve for oil field |
| CN201137476Y (en) * | 2008-01-03 | 2008-10-22 | 西安集益石油技术有限公司 | Casing tube shaping device |
| CN201778671U (en) * | 2010-07-22 | 2011-03-30 | 中国石油天然气股份有限公司 | Locking mechanism of expansion cone |
| CN203702051U (en) * | 2014-03-04 | 2014-07-09 | 岳维建 | Rapid and safe solid expansion pipe reinforcing device for oil field |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2001269810B2 (en) * | 1998-11-16 | 2005-04-07 | Shell Oil Company | Radial expansion of tubular members |
| WO2004083593A2 (en) * | 2003-03-14 | 2004-09-30 | Enventure Global Technology | Radial expansion and milling of expandable tubulars |
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2014
- 2014-03-04 CN CN201410075348.7A patent/CN103835674B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1745873A1 (en) * | 1986-01-06 | 1992-07-07 | Всесоюзный научно-исследовательский институт по креплению скважин и буровым растворам | Hydraulic and mechanical mandrel for expanding corrugated patch in casing |
| CN1594631A (en) * | 2004-07-01 | 2005-03-16 | 陈玉如 | Expanding metal material and bulged tube device for petroleum oil well |
| CN2883657Y (en) * | 2005-09-30 | 2007-03-28 | 余金陵 | Mending tool for broken steel tubes of oil/gas/water well |
| CN200943458Y (en) * | 2006-08-29 | 2007-09-05 | 甘肃兰金民用爆炸高新技术公司 | Deep hole shaft explosion reshaping device |
| CN101210485A (en) * | 2006-12-25 | 2008-07-02 | 长庆石油勘探局 | Design method of expansion sleeve for oil field |
| CN201137476Y (en) * | 2008-01-03 | 2008-10-22 | 西安集益石油技术有限公司 | Casing tube shaping device |
| CN201778671U (en) * | 2010-07-22 | 2011-03-30 | 中国石油天然气股份有限公司 | Locking mechanism of expansion cone |
| CN203702051U (en) * | 2014-03-04 | 2014-07-09 | 岳维建 | Rapid and safe solid expansion pipe reinforcing device for oil field |
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| CN103835674A (en) | 2014-06-04 |
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