CN103835674A - Fast safe solid expandable tube reinforcement device for oilfields - Google Patents

Fast safe solid expandable tube reinforcement device for oilfields Download PDF

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Publication number
CN103835674A
CN103835674A CN201410075348.7A CN201410075348A CN103835674A CN 103835674 A CN103835674 A CN 103835674A CN 201410075348 A CN201410075348 A CN 201410075348A CN 103835674 A CN103835674 A CN 103835674A
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China
Prior art keywords
fast
tube
ring
expansion
expandable
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CN201410075348.7A
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Chinese (zh)
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CN103835674B (en
Inventor
岳维建
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岳维建
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Publication of CN103835674B publication Critical patent/CN103835674B/en

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Abstract

Disclosed is a fast safe solid expandable tube reinforcement device for oilfields. An expander is placed in an expandable patch tube in clearance fit in a broken well casing. The expander comprises a hydraulic tube and a fast inserting rod; the lower end of the hydraulic tube is connected to the upper port of the fast inserting rod, the lower end of the fast inserting rod is embedded in an expandable cone, and the cylindrical portion of the expandable cone tightly matches with the inner wall of an expandable chamber; a lifting rod penetrates the hydraulic tube, the fast inserting rod, the expandable cone in clearance fit from bottom to top, and the lower end of the lifting rod is tightly connected to a combined bottom plug; the combined bottom plug comprises a mandrel, and the mandrel penetrates a piston body, a two-way slip, is embedded in a guide cone holder and is fixedly connected with a pin. The device has the advantages that casing patching operation efficiency is improved greatly, the patching period is shortened, and significant economic benefits can be created. The device is characterized in that after pressing operation of the expandable tube is finished, the expandable cone moves upwardly till the upper port of the expandable tube and drives the lifting rod to move upwardly, the lifting rod drives the combined bottom plug to move upwardly, and the positioning part of the combined bottom plug can reduce automatically to relieve the limit and can be lifted out from the upper end of the expandable tube.

Description

Fast and safely solid expansion pipe bracing means of oil field
Technical field
The present invention relates to casing repairing device, especially fast and safely solid expansion pipe bracing means of oil field.
Background technology
Solid expansion pipe 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, thereby reaches the object that increases 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 cannot normally be produced oil, well, brings and has a strong impact on to the overall economic efficiency of whole oil field development.At present, domestic because cover damage shut-in well sum exceedes 20000 mouthfuls, 1,000 hundred million yuan of overstocked shaft building funds, have 5% production capacity to proceed to shut-in well ranks every year, and repair well less than 1/3rd, the demand pressing degree of visible petroleum industry to expansion tube high-tech product.And the conventional cannula patching tube adopting is at present due to its unreasonable structure, although solved to a certain extent diameter after subsidy, repaired the aspect such as casing damaged well segment length, subsidy reinforcement process and cannot meet the requirement in oil field, and in work progress, need first to descend patching tube, the logical end of lower tubular column mill, stifledly just can complete subsidy sleeve technology again, exist well workover complicated construction technique, operation many, repair the problems such as rear well latus rectum changes greatly.China Patent Publication No. is the public technology of CN201443325U, has solved to a certain extent the problems referred to above, has reached good effect.But due to design defect, existing problems are, one: affect resilience when excessive because expansion tube is subject to external force, latus rectum is less than the stifled diameter in the end, stifled can not the carrying out in the end; Two: exist expansion cone to damage or oil pipe cutting-off, stifled the carrying to come up in the end.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
The variety of issue existing for the conventional cannula subsidy technology of current employing, the invention provides fast and safely solid expansion pipe bracing means of a kind of oil field, overcome the deficiency that casing patching technology in the past exists, had and can produce sealed-for-life after construction technology simple and fast, casing repairing and borehole size changes the features such as little.
Fast and safely solid expansion pipe bracing means of oil field of the present invention, is to 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 coordinating, inserts expander at damaged oil well casing internal clearance; This expander comprises: it is suitable for reading that the lower end of hydraulic tube connects quick inserted link, inserted link lower end embeds in expansion cone fast, the columnar part of expansion cone and the inwall of expanding chamber closely cooperate, the top that has joint ring, cylinder cylinder ring week is frustum, matched in clearance is through hydraulic tube, fast inserted link, expansion cone, its lower end and stifled being fastened and connected in the combination end from top to bottom for lifting rod, and the combination end in stifled ring week is the inwall phase tight fit with expanding chamber by joint ring; It is axially to have been run through after piston body, bi-directional slip and embedded in guide cone holder and by pin and be fixedly connected by mandrel that the combination end is stifled, the mandrel of bi-directional slip inside has been set with slip cap, described bi-directional slip ring week is radially fixed wtih slips positioning key, its end of slips positioning key is connected on the inwall of expansion patching tube.
As a further improvement on the present invention, the piston body in stifled at the bottom of described combination be by least two vertical gaps of cambered surface tile fragment to piecing together into, ring week is the inwall phase tight fit with expanding chamber by hard joint ring.
As a further improvement on the present invention, described bi-directional slip be by the vertical gap of the lonely face tile fragment of 2-4 piece to piecing together into, its ring week is provided with more than one group contractile ring.
As a further improvement on the present invention, there is pressure cap to be pressed on each upper edge to the piston body of spelling on mandrel top.
As a further improvement on the present invention, the core hole 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, the internal ring wall of described expansion cone is radially provided with wedge-shaped slot, is provided with draw-in groove and is built in jump ring at groove at inserted link lower end correspondence position.
Fast and safely solid expansion pipe bracing means of oil field of the present invention, reasonable in design, improves casing repairing operating efficiency greatly, has shortened the time between overhauls(TBO), can create significant economic benefit.Its core technology is: expansion tube is suppressed after the end of job, 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 spacingly, propose from expansion tube upper end, if at the combination end stifled moving upward in process, because certain reason is obstructed, when exceeding in the situation of certain force, safety pin cuts off, stifled decomposition of the combination end, at the bottom of back drop, still can guarantee the success of expansion reinforcing technology.So this device one is fast, is 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 for the second time tubing string and salvage or milling; The 2nd, safety, because be combination end bridging structure, no matter any situation, all there will not be the fault in the stifled stuck middle expansion tube in the end, guarantees to reinforce and subsidizes successfully.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is that the present invention combines the stifled enlarged drawing in the end.
The specific embodiment
, elaborate to fast and safely solid expansion pipe bracing means of oil field of the present invention below in conjunction with accompanying drawing 1, accompanying drawing 2:
Embodiment 1
Fast and safely solid expansion pipe bracing means of oil field of the present invention, is to 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 coordinating, inserts expander at damaged oil well casing 6 internal clearances; This expander comprises: it is suitable for reading that the lower end of hydraulic tube 2 connects quick inserted link 21, inserted link 21 lower ends embed in expansion cone 3 fast, cylinder 7 parts of expansion cone 3 and the inwall of expanding chamber 15 closely cooperate, it is frustum that there is the top of joint ring 8, cylinder 7 in 7 ring weeks of cylinder, matched in clearance is through hydraulic tube 2, fast inserted link 21, expansion cone 3, its lower end were fastened and connected with the combination end stifled 5 lifting rod 4 from top to bottom, and the combination end in stifled 5 ring weeks are the inwall phase tight fit with expanding chamber 15 by joint ring 9; The combination end stifled 5 is axially run through in piston body 11, the rear embedding guide cone of bi-directional slip 12 holder 13 from top to bottom and be fixedly connected by pin 14 by mandrel 10, and the mandrel 10 of bi-directional slip 12 inside has been set with slip cap 16.Described 12 ring weeks of bi-directional slip are radially fixed wtih slips positioning key 17, slips positioning key 17 its ends are connected on the inwall of expansion patching tube 1.
Embodiment 2
Fast and safely solid expansion pipe bracing means of oil field of the present invention, is to 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 coordinating, inserts expander at damaged oil well casing 6 internal clearances; This expander comprises: it is suitable for reading that the lower end of hydraulic tube 2 connects quick inserted link 21, inserted link 21 lower ends embed in expansion cone 3 fast, cylinder 7 parts of expansion cone 3 and the inwall of expanding chamber 15 closely cooperate, it is frustum that there is the top of joint ring 8, cylinder 7 in 7 ring weeks of cylinder, matched in clearance is through hydraulic tube 2, quick 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.Radially be provided with wedge-shaped slot, be provided with draw-in groove and be built in jump ring at groove at inserted link 21 lower end correspondence positions at the internal ring wall of expansion cone 3.
At the bottom of described combination, stifled 5 is axially run through in piston body 11, the rear embedding guide cone of bi-directional slip 12 holder 13 from top to bottom and be fixedly connected by pin 14 by mandrel 10, and the mandrel 10 of bi-directional slip 12 inside has been set with slip cap 16.Mandrel 10 tops have pressure cap 19 to be pressed on each upper edge to the piston body 11 of spelling.The combination end, is stifled, and because possessing bidirectional-movement function, reinforcing process only need once be thrown in tubing string and can be completed.And pin 14, in expansion process, in various situations of being obstructed, after pin is cut off, can by expansion cone and the end stifled carry on smoothly or decompose after the shaft bottom that changes.
Described piston body 11 be by least two vertical gaps of cambered surface tile fragment to piecing together into, ring week is the inwall phase tight fit with expanding chamber 15 by hard joint ring 9.
Described bi-directional slip 12 is to piecing together into by the vertical gap of the lonely face tile fragment of 2-4 piece, its ring week is provided with more than one group contractile ring 18, and the two end ring weeks up and down of bi-directional slip 12 are radially fixed wtih slips positioning key 17, slips positioning key 17 its ends are connected on the inwall of expansion patching tube 1.
The core hole phase screw socket tight fit of the top limited location nut 20 of lifting rod 4, lower end and mandrel 10.
In the time that oil well casing 6 certains are damaged, this device is transferred in sleeve pipe, make to move patching tube is expanded and closely cooperated with sleeve pipe in expansion cone by inputting highly pressurised liquid in hydraulic tube, in the time that expansion cone rises to the upper port of expansion tube and the stop nut of lifting rod and contacts, drive lifting rod is up, make stifledly at the bottom of the stifled both combinations of the present invention in the end to be separated to upper port with expansion tube, complete the reinforcing subsidy of damaged sleeve pipe.
Use this device, realize single and completed lower tubular column subsidy technology, changed and needed at present secondary to play the stifled casing reinforcement subsidy technology that just can complete at the bottom of lower tubular column milling, one times of raising casing repairing operating efficiency.

Claims (6)

1. fast and safely solid expansion pipe bracing means of oil field, be by expansion patching tube (1), hydraulic tube (2), expansion cone (3), lifting rod (4) and the combination end stifled (5) formation, in the expansion patching tube (1) that it is characterized in that coordinating at damaged oil well casing (6) internal clearance, insert expander, this expander comprises: it is suitable for reading that the lower end of hydraulic tube (2) connects quick inserted link (21), inserted link (21) lower end embeds in expansion cone (3) fast, cylinder (7) part of expansion cone (3) closely cooperates with the inwall of expanding chamber (15), cylinder (7) ring has joint ring (8) week, the top of cylinder (7) is frustum, lifting rod (4) from top to bottom matched in clearance passes hydraulic tube (2), inserted link (21) fast, expansion cone (3), its lower end is fastened and connected with the combination end stifled (5), stifled (5) the ring week combination end is the inwall phase tight fit with expanding chamber (15) by joint ring (9), the combination end stifled (5) is embed in guide cone holder (13) and be fixedly connected by pin (14) after axially having run through piston body (11), bi-directional slip (12) by mandrel (10), the inner mandrel (10) of bi-directional slip (12) has been set with slip cap (16), and described bi-directional slip (12) ring is radially fixed wtih slips positioning key (17) week, its end of slips positioning key (17) is connected on the inwall of expansion patching tube (1).
2. fast and safely solid expansion pipe bracing means of oil field as claimed in claim 1, it is characterized in that combining piston body (11) at the end stifled (5) and be by least two vertical gaps of cambered surface tile fragment piecing together into, ring week is the inwall phase tight fit with expanding chamber (15) by hard joint ring (9).
3. solid expansion pipe bracing means fast and safely for oil field as claimed in claim 1, it is characterized in that bi-directional slip (12) be by the vertical gap of the lonely face tile fragment of 2-4 piece to piecing together into, its ring week is provided with more than one group contractile ring (18).
4. fast and safely solid expansion pipe bracing means of oil field as claimed in claim 1, is characterized in that mandrel (10) top has pressure cap (19) to be pressed on each upper edge to the piston body (11) of spelling.
5. solid expansion pipe bracing means fast and safely for oil field as claimed in claim 1, is characterized in that the core hole phase screw socket tight fit of top limited location nut (20), lower end with the mandrel (10) of lifting rod (4).
6. fast and safely solid expansion pipe bracing means of oil field as claimed in claim 1, is characterized in that the internal ring wall of expansion cone (3) is radially 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.
CN201410075348.7A 2014-03-04 2014-03-04 Oil field fast and safely solid expansion pipe bracing means CN103835674B (en)

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CN103835674B CN103835674B (en) 2016-03-02

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Cited By (2)

* Cited by examiner, † Cited by third party
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
WO2021012289A1 (en) * 2019-07-24 2021-01-28 屈波 Liner composite device for pipeline

Citations (10)

* Cited by examiner, † Cited by third party
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
WO2004083593A2 (en) * 2003-03-14 2004-09-30 Enventure Global Technology Radial expansion and milling of expandable tubulars
US20050045341A1 (en) * 1998-11-16 2005-03-03 Cook Robert Lance Radial expansion of tubular members
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

Patent Citations (10)

* Cited by examiner, † Cited by third party
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
US20050045341A1 (en) * 1998-11-16 2005-03-03 Cook Robert Lance Radial expansion of tubular members
WO2004083593A2 (en) * 2003-03-14 2004-09-30 Enventure Global Technology Radial expansion and milling of expandable tubulars
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

Cited By (2)

* Cited by examiner, † Cited by third party
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
WO2021012289A1 (en) * 2019-07-24 2021-01-28 屈波 Liner composite device for pipeline

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