CN104005725B - Expansion tube twin-stage expansion gear - Google Patents
Expansion tube twin-stage expansion gear Download PDFInfo
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- CN104005725B CN104005725B CN201310060171.9A CN201310060171A CN104005725B CN 104005725 B CN104005725 B CN 104005725B CN 201310060171 A CN201310060171 A CN 201310060171A CN 104005725 B CN104005725 B CN 104005725B
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Abstract
A kind of expansion tube twin-stage expansion gear.Cone sheet is strutted in order to overcome existing reducing expansion-head to rely on lifting to expand addendum cone, the deficiency of anticipated size it cannot be guaranteed that reducing expansion-head swells, the expansion tube of the present invention is made up of the expansion tube body on top and the bay of bottom, and bay internal diameter is more than expansion tube body internal diameter；Reducing expansion-head, sizing expansion-head are positioned at bay, reducing expansion-head is positioned at the lower section of sizing expansion-head, the maximum outside diameter of sizing expansion-head is identical with the internal diameter of bay, being coaxially installed with central canal in expansion tube, the annular space between central canal and expansion tube is from top to bottom sequentially installed with grafting assembly, hydraulic cylinder assembly, sizing expansion-head assembly, controlling organization, reducing expansion-head assembly.It provides the benefit that, rational in infrastructure, and beneficially expansion gear passes through sleeve pipe or the well of reduced size, subsidizes the sleeve pipe that bottom latus rectum is bigger, and the expansion tube internal diameter rounding rule after expansion provides good wellbore conditions for follow-up construction operation.
Description
Technical field
The present invention relates to the expansion operation kit of a kind of oil and gas development expansion tube, especially relate to a kind of expansion tube
Twin-stage expansion gear.
Background technology
During the tapping the potential and upgrade technologically of old filed, in order to obtain bigger latus rectum, sometimes use expansion tube completion.And along with oil
The exploitation in field, is affected by factors, and the leakage of Casing Failure, deformation, dislocation etc. damage more and more, have had a strong impact on oil
The normal production in field, carries out the damaged part of sleeve pipe repairing the service life that can extend sleeve pipe tubing string.The construction of expansion tube
It is to utilize oil pipe or drilling rod that expansion instrument and expansion tube are lowered into precalculated position, by pumping liquid in tubing string and build the pressure,
Fluid pressure is relied on to promote expansion-head relative expansion pipe to move, expansion tube is big along radial direction support, complete the expansion of expansion tube
Process.
At present, expansion tube expansion-head outside dimension used by expansion process is fixing, and is pre-installed in expansion
In pipe bay, therefore the external diameter of bay is bigger than other entity part external diameter, the external diameter of expansion tube entity and transmitting after expansion
Outdoor footpath is identical or bigger.Therefore, sleeve pipe that bottom latus rectum big little for top latus rectum or pit shaft, it is impossible under enter suitable size
Expansion tube bottom big orifice sleeve pipe is subsidized or in the pit shaft of bottom, carries out expansion tube completion.On February 9th, 2011 is public
The Chinese utility model patent " a kind of sheath repairing tool " (publication number CN201738854U) opened, by the swollen head of rigidity and elasticity
Swollen head double expansion, when lifting tubing string and moving up, rigidity is swollen, and head first carries out primary expansion, and then elastic expansion head continues swollen
Swollen, reduce expansion resistance, make expansion tube tightly subsidize on internal surface of sleeve pipe, effectively prevent because expansive force is too high, expansion-head is by card
Extremely, cause the generation of the accidents such as subsidy inefficacy, but after subsidy tool assemble, elastic expansion head has been maximum outside diameter size
, it is impossible to realize expansion tube and pass through sleeve pipe or the pit shaft that top latus rectum is little, bottom latus rectum is big, bottom big orifice sleeve pipe is mended
Paste or in the pit shaft of bottom, carry out expansion tube completion.
Patent " expansion tube umbrella type variable footpath expands the instrument " (publication number of December in 2010 announcement on the 8th
CN101906947A), it is that the umbrella type variable footpath of a kind of expansion tube expands instrument, bores two parts including fixed cone and reducing.Gu
Fixed cone is up-narrow and down-wide cone through-hole structure, and the opening of reducing cone is dependent on lifting and expands addendum cone and strut cone sheet, it is impossible to ensure
Reducing expansion cone swells anticipated size, and reducing expansion cone swell after be discontinuous with expansion tube contacting circumferentially
, the internal diameter after therefore expansion tube expands is not regular circle, is unfavorable for subsequent construction operation.
Summary of the invention
Cone sheet is strutted, it is impossible to ensure that reducing expansion-head swells in order to overcome existing reducing expansion-head to rely on lifting to expand addendum cone
To anticipated size, and reducing expansion-head swell after be discontinuous deficiency with expansion tube contacting circumferentially, the present invention carries
For a kind of expansion tube twin-stage expansion gear.
The technical solution adopted for the present invention to solve the technical problems is: expansion tube twin-stage expansion gear include expansion tube,
Sizing expansion-head, reducing expansion-head, hydraulic cylinder, expansion tube is made up of the expansion tube body on top and the bay of bottom, launches
Inclined-plane and arc surface transition are passed through more than the internal diameter of expansion tube body, expansion tube body and bay in indoor footpath；Reducing expansion-head,
Sizing expansion-head is positioned at bay, and sizing expansion-head is positioned at the top of reducing expansion-head, the maximum outside diameter of sizing expansion-head with
The internal diameter of bay is identical, is coaxially installed with central canal in expansion tube, and the annular space between central canal and expansion tube from top to bottom depends on
Secondary grafting assembly, hydraulic cylinder, sizing expansion-head, controlling organization, reducing expansion-head are installed.
The epivalve body of reducing expansion-head, hypovalve body, lobe housing are installed the most successively；The outer lug boss peace of epivalve body upper end
It is contained in the groove of adapter sleeve lower end endoporus；The outer lug boss of hypovalve body lower end is arranged in the groove of lobe housing upper end endoporus.
Radial direction through hole is had below the hydraulic cylinder piston of central canal；Footpath between sizing expansion-head and the reducing expansion-head of central canal
To being provided with limited block, one end of limited block protrudes from the endoporus of central canal.
The epivalve body of reducing expansion-head, the lobe number of hypovalve body are respectively more than 2, and quantity is equal；Epivalve body and hypovalve
Body circumferentially interleaved is arranged, and the cross section of composition is annular.
The original state of expansion tube twin-stage expansion gear assembling, epivalve body and hypovalve body axial distance are more than reducing expansion-head
Axial distance during epivalve body, hypovalve body combination net shape.
After the combination of the epivalve body of reducing expansion-head, hypovalve body, the reducing expansion-head upper end of net shape is up-small and down-big circle
Stage body, lower end are up big and down small Rotary-table；The big end of two Rotary-tables is equivalently-sized, by arc surface transition.Epivalve body, hypovalve
After body combination, the reducing expansion-head endoporus top of net shape is up-small and down-big round platform hole, and bottom is up big and down small round platform
Hole.The cross section of epivalve body from top to bottom becomes narrow gradually, and the cross section of hypovalve body the most gradually broadens；End form after combination
The epivalve body of shape reducing expansion-head and the contact surface curve of hypovalve body on periphery in continuous echelon formation, epivalve body and hypovalve
Body radial dimension on same cross section is equal.
The original state of expansion tube twin-stage expansion gear assembling, inclines to central canal respectively in epivalve body lower end and hypovalve body upper end
Tiltedly, the outside dimension of reducing expansion-head is less than the internal diameter size of bay.
The top connection lower end of grafting assembly is fixing with central canal upper end to be connected；In the annular groove of top connection upper end endoporus
Being provided with lock ring, matches fixing connection with lock ring in inserting top connection in connection-peg bottom.The inner hole of cylinder of hydraulic cylinder is upper
Shoulder hole little under great, cylinder barrel small diameter bore is slidably mounted on central canal；In the middle part of the annular space of cylinder barrel large diameter hole and central canal
Piston is installed；Fixed piston in the cannelure of the lock dog insertion central canal relevant position installed in the radial direction lock dog groove of piston；
Radial direction through hole on piston lower central pipe communicates with the annular space of cylinder barrel.The quantity of hydraulic cylinder is more than 2.
The casing slip of sizing expansion-head is arranged on central canal, and lining is up big and down small multidiameter, sizing expansion-head,
Black box is from top to bottom sequentially arranged on the pilot pin of lining；Lining lower end is installed with adapter sleeve.Adapter sleeve interior
Hole is the shoulder hole that middle part is little, two ends are big, and small diameter inner hole and upper end larger diameter internal bore intermediate zone are annular groove, controls machine
The limited block of structure is positioned at the lower section of annular groove；Retaining ring is installed in the cannelure of small diameter inner hole in the middle part of adapter sleeve.
Lock ring is split ring, and lock ring endoporus is pawl gingival cyst of mucous gland in the newborn structure, connection-peg excircle has and lock ring endoporus pawl horse
The pawl gingival cyst of mucous gland in the newborn structure that tooth matches.Retaining ring is split ring, and retaining ring endoporus is pawl gingival cyst of mucous gland in the newborn structure.
By putting into plug in central canal, plug is sitting on limited block, injects liquid and builds the pressure, in pressure in central canal
The cylinder barrel slide downward of hydraulic cylinder under power effect, sizing expansion-head, adapter sleeve drive the epivalve body of reducing expansion-head along central canal
Slide downward；In the limited block on central canal enters the annular groove of adapter sleeve, the retaining ring being arranged on adapter sleeve is with right
The central canal excircle upper inverted tooth gingival cyst of mucous gland in the newborn answering position is meshed pinning, and epivalve body and the hypovalve body of reducing expansion-head are combined as finally
The reducing expansion-head of shape, the geomery of reducing expansion-head is fixed.
The invention has the beneficial effects as follows, rational in infrastructure, sizing expansion-head and reducing expansion-head are combined and is arranged on expansion tube
In bay, the external diameter of reducing expansion-head is less than the external diameter of sizing expansion-head, and when expanding construction, the external diameter of reducing expansion-head is first
Become bigger than sizing expansion-head, and outer surface rounding, make the external diameter of bay become much larger, beneficially expansion gear is by less
The sleeve pipe of size or well, subsidize the sleeve pipe that bottom latus rectum is bigger, or carries out expansion tube in the well that latus rectum is bigger
Completion, after expansion, expansion tube internal diameter rounding rule, provide good wellbore conditions for follow-up construction operation.
Accompanying drawing explanation
Fig. 1 is expansion tube twin-stage expansion gear structural representation of the present invention.
Fig. 2 is that expansion tube twin-stage expansion gear of the present invention puts into schematic diagram after plug.
Fig. 3 is that present invention structural representation when reducing expansion-head size determines is intended to.
Fig. 4 is the plug schematic diagram of expansion tube twin-stage expansion gear of the present invention.
In figure: 1. connection-peg, 2. lock ring, 3. top connection, 4. central canal, 5. cylinder barrel, 6. piston, 7. lock dog, 8. expansion tube
Body, 9. lining, 10. sizing expansion-head, 11. black boies, 12. adapter sleeves, 13. limited blocks, 14. retaining rings, 15. epivalves
Body, 16. hypovalve bodies, 17. lobe housings, 18. bays, 19. plugs, 20. radial direction through hole, 21. annular grooves.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings.But, those skilled in the art should know
, the invention is not restricted to listed detailed description of the invention, as long as meeting the spirit of the present invention, all should be included in the present invention
Protection domain in.
See accompanying drawing 1～4.The expansion tube of expansion tube twin-stage expansion gear of the present invention by top expansion tube body 8 and under
The bay 18 in portion forms, and bay 18 internal diameter is more than expansion tube body 8 internal diameter, expansion tube body 8 and bay 18 by tiltedly
Face and arc surface transition.Being coaxially installed with central canal 4 in expansion tube, the annular space between central canal 4 and expansion tube from top to bottom depends on
Secondary grafting assembly, hydraulic cylinder, sizing expansion-head, controlling organization, reducing expansion-head are installed.Central canal 4 upper end by screw thread and
Oil pipe or drilling rod connect.
Reducing expansion-head, sizing expansion-head 10 are positioned at bay 18, and sizing expansion-head 10 is positioned at the upper of reducing expansion-head
Side, sizing expansion-head 10 can be spherical, it is also possible to be the combination of two round platforms, i.e. top be up-small and down-big round platform, bottom
For up big and down small round platform, arc transition is passed through in centre；The maximum outside diameter of sizing expansion-head 10 is identical with bay 18 internal diameter.
Reducing expansion-head is formed by epivalve body 15, hypovalve body 16, lobe housing 17, and is installed the most successively.Epivalve body
The outer lug boss of 15 upper ends is arranged in the groove of adapter sleeve 12 lower end endoporus；The outer lug boss of hypovalve body 16 lower end is arranged on lobe housing
In the groove of 17 upper end endoporus.The epivalve body 15 of reducing expansion-head, the lobe number of hypovalve body 16 are respectively more than 2, and quantity phase
Deng.The epivalve body 15 of reducing expansion-head, hypovalve body 16 circumferentially interleaved are arranged, and after they combinations, the reducing of net shape is swollen
Swollen head upper end be up-small and down-big Rotary-table, lower end be up big and down small Rotary-table；The big end of two Rotary-tables is equivalently-sized, logical
Cross arc surface transition.After the combination of epivalve body 15, hypovalve body 16, the reducing expansion-head endoporus top of net shape is up-small and down-big
Round platform hole, bottom is up big and down small round platform hole.The reducing expansion-head cross section of net shape is annular.
The cross section of epivalve body 15 from top to bottom becomes narrow gradually, and the cross section of hypovalve body 16 the most gradually broadens；Group
After conjunction the epivalve body 15 of net shape reducing expansion-head and the contact surface curve of hypovalve body 16 on periphery in continuous trapezoidal row
Row, epivalve body 15 is equal with the radial dimension of hypovalve body 16 contact surface.
When expansion tube twin-stage expansion gear is the original state of assembling, there is gap between epivalve body 15 and hypovalve body 16, i.e.
Axial distance when axial distance is more than reducing expansion-head epivalve body 15, hypovalve body 16 combines net shape；Epivalve body 15 lower end
Tilting to central canal 4 respectively with hypovalve body 16 upper end, now the outside dimension of reducing expansion-head is less than the internal diameter chi of bay 18
Very little.
Grafting assembly includes connection-peg 1 and top connection 3, and the bottom of connection-peg 1 is inserted in top connection 3 endoporus, top connection 3
Lower end is fixing with central canal 4 upper end to be connected.Being provided with lock ring 2 in the annular groove of top connection 3 upper end endoporus, lock ring 2 is for opening
Choma, its endoporus is pawl gingival cyst of mucous gland in the newborn structure.Connection-peg 1 bottom is inserted in top connection 3, and its cylindrical is equipped with lock ring 2 corresponding positions
The pawl gingival cyst of mucous gland in the newborn being meshed with lock ring 2, is connected connection-peg 1 with top connection 3 axial restraint.
Hydraulic cylinder includes cylinder barrel 5, piston 6 and lock dog 7.Cylinder barrel 5 endoporus is up big and down small shoulder hole, cylinder barrel 5 little directly
Footpath circle hole sleeve, on central canal 4, can slide up and down along central canal 4.In the annular space of the major diameter round hole of cylinder barrel 5 and central canal 4
Portion is provided with piston 6, is provided with lock dog 7 in the radial direction lock dog groove of piston 6, and central canal 4 relevant position is inserted in one end of lock dog 7
In cannelure, by piston 6 axial restraint.There is radial direction through hole 20 lower section of the hydraulic cylinder piston 6 of central canal 4, and radial direction through hole 20 will
Central canal endoporus connects with the annular space of cylinder barrel 5.The quantity of hydraulic cylinder determines according to indexs such as the intensity of expansion tube, usually 2
Above, structure is identical.
Sizing expansion-head includes lining 9, sizing expansion-head 10, black box 11, and lining 9 is slidably mounted on central canal 4.
Lining 9 is up big and down small multidiameter, and sizing expansion-head 10, black box 11 are from top to bottom sequentially arranged at the little axle of lining 9
On neck, black box 11 is generally made up of several rubber rings and spacer ring, the ring between seal cartridge 9 and expansion tube bay 18
Sky, is provided with radial direction seal ring between lining 9 and central canal 4.Lining 9 lower end is installed with adapter sleeve 12.
The endoporus of adapter sleeve 12 is the shoulder hole that middle part is little, two ends are big, small diameter inner hole and upper end larger diameter internal bore mistake
Crossing band is annular groove 21.The limited block 13 of controlling organization is installed on the central canal 4 below annular groove 21, limited block 13
End protrudes from the endoporus of central canal 4.Retaining ring 14, retaining ring are installed in the cannelure of small diameter inner hole in the middle part of adapter sleeve 12
14 is split ring, and endoporus is pawl gingival cyst of mucous gland in the newborn structure.Pawl gingival cyst of mucous gland in the newborn is had on central canal 4 cylindrical below limited block 13, can be with retaining
Pawl gingival cyst of mucous gland in the newborn engagement on ring 14 endoporus.
See Fig. 2.By putting into plug 19 in central canal 4, plug 19 is sitting on limited block 13；Inject in central canal
Liquid also builds the pressure, and promotes cylinder barrel 5 slide downward of hydraulic cylinder, and sizing expansion-head, adapter sleeve 12 drive the epivalve of reducing expansion-head
Body 15 is along central canal 4 slide downward.In the limited block 13 on central canal 4 enters the annular groove 21 of adapter sleeve 12, it is arranged on
Retaining ring 14 on adapter sleeve 12 is meshed with the pawl gingival cyst of mucous gland in the newborn on central canal 4 excircle of correspondence position pinning, and reducing expands
The epivalve body 15 of head and hypovalve body 16 are combined as the reducing expansion-head of net shape, and the geomery of reducing expansion-head is fixed.
The process applying expansion tube twin-stage expansion gear of the present invention to carry out expansion tube construction operation is:
First, by not including connection-peg 1, other parts of plug 19 assemble complete, and send into pit shaft, now epivalve body
Axial distance between 15 and hypovalve body 16 is maximum, i.e. has gap between epivalve body 15 and hypovalve body 16；Again by connection-peg 1 upper end
Be fixedly connected on the lower end of oil pipe/drilling rod, under enter in expansion tube；Suitably pressurization, makes the pawl gingival cyst of mucous gland in the newborn on connection-peg 1 and lock ring 2
The engagement of pawl gingival cyst of mucous gland in the newborn, complete quickly to connect, with oil pipe/drilling rod, expansion tube be transported to precalculated position (seeing Fig. 1).
Then, putting into plug 19 (seeing accompanying drawing 4) in oil pipe/drilling rod, pumping liquid promotes plug 19 to move downward, directly
Sit on to plug 19 and (see Fig. 2) on limited block 13, in the oil pipe/drilling rod on plug 19 top, form a closed chamber；Continue
During pumping liquid, along with oil pipe or the rising of inner pressure inside pipe, fluid pressure is by the incoming liquid of radial direction through hole 20 on central canal 4
Cylinder pressure, promotes cylinder barrel 5 to move downward, and then is promoted lining 9, expansion-head 10, black box 11, adapter sleeve 12, epivalve by cylinder barrel 5
The relative central canal 4 of body 15 moves down；Epivalve body 15 and hypovalve body 16 are mutually inserted, they outline chis in the radial direction
Very little incrementally increase, and the expansion tube that swells.When being plugged into certain position, their maximum outside diameter reaches anticipated size, with swollen
The complete circumference of track formation rule of tube expansion contact；The now pawl gingival cyst of mucous gland in the newborn of retaining ring 14 and central canal 4 relevant position
The engagement of pawl gingival cyst of mucous gland in the newborn is locked, and epivalve body 15 and hypovalve body 16 no longer occur relative movement, the shape and size dimension of reducing expansion-head
Hold constant；Limited block 13 is positioned at the annular groove 21 of adapter sleeve 12.
Continuing to inject liquid in oil pipe/drilling rod, the promotion lower position block 13 at plug 19 is moved radially outwards, and enters
In the annular groove 21 of adapter sleeve 12, limited block 13 releases the constraint to plug 19；Plug 19 continues to move down, oil pipe/brill
In bar unimpeded, the inside and outside connection (seeing Fig. 3) of central canal 4.Subsequently, fluid pressure passes to the annular space between central canal 4 and expansion tube,
Act on black box 11, to sizing expansion-head 10 thrust upwards, add that well head hook upwards lifts oil pipe/drill pipe
Post, makes twin-stage expansion gear move upward, it is achieved the double expansion to expansion tube.
Expansion tube twin-stage expansion gear of the present invention is combined by sizing expansion-head and reducing expansion-head, at its expansion tube
When big external diameter is identical with the expansion tube maximum outside diameter using single sizing expansion-head, expansion tube can obtain bigger expansion rate,
Achieve expansion tube and pass through the less sleeve pipe of top latus rectum or well, bottom is subsidized or bigger compared with the sleeve pipe of big orifice
The expansion tube internal diameter rounding rule after expansion tube completion, and expansion is carried out, it is ensured that reach predetermined diameter chi in the well of latus rectum
Very little, provide good wellbore conditions for follow-up construction operation.
It should be noted that above-described embodiment is exemplary rather than limiting the present invention, those skilled in the art can design very
Many alternate embodiments are without deviating from the right of this patent.
Claims (3)
1. an expansion tube twin-stage expansion gear, including expansion tube, sizing expansion-head, reducing expansion-head, hydraulic cylinder, expansion tube by
The expansion tube body on top and the bay composition of bottom, bay internal diameter is more than the internal diameter of expansion tube body, expansion tube body
With bay by inclined-plane and arc surface transition；Reducing expansion-head, sizing expansion-head are positioned at bay, and sizing expansion-head is positioned at
The top of reducing expansion-head, the maximum outside diameter of sizing expansion-head is identical with the internal diameter of bay, is co-axially mounted in described expansion tube
Central canal (4), the annular space between central canal (4) and expansion tube is had from top to bottom to be sequentially installed with grafting assembly, hydraulic cylinder, sizing
Expansion-head, controlling organization, reducing expansion-head；The epivalve body (15) of reducing expansion-head, hypovalve body (16), lobe housing (17) are by up to
Under install successively；The outer lug boss of epivalve body (15) upper end is arranged in the groove of adapter sleeve (12) lower end endoporus；Hypovalve body (16)
The outer lug boss of lower end is arranged in the groove of lobe housing (17) upper end endoporus；Hydraulic cylinder piston (6) lower section of described central canal (4)
There is radial direction through hole (20)；Radially limited block (13) is installed between sizing expansion-head and the reducing expansion-head of central canal (4), spacing
One end of block (13) protrudes from the endoporus of central canal (4)；
The epivalve body (15) of described reducing expansion-head, the lobe number of hypovalve body (16) are respectively more than 2, and quantity is equal；Epivalve
Body (15) is arranged with hypovalve body (16) circumferentially interleaved, and the cross section of composition is annular；Described expansion tube twin-stage expands
The original state of device assembling, epivalve body (15) and hypovalve body (16) axial distance more than reducing expansion-head epivalve body (15), under
Axial distance during lobe body (16) combination net shape；After the combination of the epivalve body (15) of described reducing expansion-head, hypovalve body (16)
The reducing expansion-head upper end of net shape be up-small and down-big Rotary-table, lower end be up big and down small Rotary-table；2 Rotary-tables big
Hold equivalently-sized, by arc surface transition；The reducing expansion-head of net shape after described epivalve body (15), hypovalve body (16) combination
Endoporus top is up-small and down-big round platform hole, and bottom is up big and down small round platform hole；The cross section of described epivalve body (15) is by upper
Becoming narrow gradually under to, the cross section of hypovalve body (16) the most gradually broadens；After combination, net shape reducing expansion-head is upper
The contact surface curve of lobe body (15) and hypovalve body (16) on periphery in continuous echelon formation, epivalve body (15) and hypovalve body
(16) contact surface radial dimension on same cross section is equal；The original state of described expansion tube twin-stage expansion gear assembling,
Epivalve body (15) lower end and hypovalve body (16) upper end tilt to central canal (4) respectively, and the outside dimension of reducing expansion-head is less than sending out
Penetrate the internal diameter size of room (18)；
It is characterized in that: top connection (3) lower end of described grafting assembly is fixing with central canal (4) upper end to be connected；Top connection (3) upper end
Being provided with lock ring (2) in the annular groove of portion's endoporus, matches with lock ring (2) in inserting top connection (3) in connection-peg (1) bottom
Fixing connection；Cylinder barrel (5) endoporus of described hydraulic cylinder is up big and down small shoulder hole, and cylinder barrel (5) small diameter bore is slidably mounted on
On central canal (4)；Cylinder barrel (5) large diameter hole is provided with piston (6) in the middle part of the annular space of central canal (4)；The radial direction lock of piston (6)
Fixed piston (6) in the cannelure of lock dog (7) insertion central canal (4) relevant position installed in block groove；Piston (6) lower central
Radial direction through hole (20) on pipe (4) communicates with the annular space of cylinder barrel (5)；During the lining (9) of described sizing expansion-head is slidably mounted on
On heart pipe (4), lining (9) is up big and down small multidiameter, and sizing expansion-head (10), black box (11) are pacified the most successively
It is contained on the pilot pin of lining (9)；Lining (9) lower end is installed with described adapter sleeve (12)；Described adapter sleeve (12) interior
Hole is the shoulder hole that middle part is little, two ends are big, and small diameter inner hole and upper end larger diameter internal bore intermediate zone are annular groove (21), institute
The limited block (13) stating controlling organization is positioned at the lower section of annular groove (21)；The ring of described adapter sleeve (12) middle part small diameter inner hole
Retaining ring (14) is installed in shape groove.
The most according to claim 1, expansion tube twin-stage expansion gear, is characterized in that: the quantity of described hydraulic cylinder is more than 2.
The most according to claim 2, expansion tube twin-stage expansion gear, is characterized in that: described lock ring (2) is split ring, lock ring
(2) endoporus is pawl gingival cyst of mucous gland in the newborn structure, and connection-peg (1) excircle has the pawl horse matched with lock ring (2) endoporus pawl gingival cyst of mucous gland in the newborn
Dental structure；Described retaining ring (14) is split ring, and retaining ring (14) endoporus is pawl gingival cyst of mucous gland in the newborn structure.
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| CN201310060171.9A CN104005725B (en) | 2013-02-26 | 2013-02-26 | Expansion tube twin-stage expansion gear |
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| CN104453764B (en) * | 2014-12-16 | 2019-06-18 | 毛国武 | Punching press harmomegathus pipe straightener device |
| CN108240205B (en) * | 2016-12-24 | 2023-09-12 | 中石化石油工程技术服务有限公司 | Underground casing two-stage cone expansion device and operation method thereof |
| CN109632497B (en) * | 2018-12-13 | 2022-03-22 | 大港油田集团有限责任公司 | Experimental device and experimental method for expansion of expansion pipe |
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| US6722427B2 (en) * | 2001-10-23 | 2004-04-20 | Halliburton Energy Services, Inc. | Wear-resistant, variable diameter expansion tool and expansion methods |
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| CN201184156Y (en) * | 2008-03-13 | 2009-01-21 | 大庆油田有限责任公司 | Variable radial expanding head for expansion reinforcing |
| CN201460784U (en) * | 2009-08-07 | 2010-05-12 | 中国石油天然气股份有限公司 | Hydraulic diameter-variable expansion tool |
| CN203175447U (en) * | 2013-02-26 | 2013-09-04 | 天津大港油田钻采技术开发公司 | Expansion pipe twin-stage expansion device |
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| CN104005725A (en) | 2014-08-27 |
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Address after: 300280 Hospital No. three, Dagang Oilfield, Tianjin Co-patentee after: DAGANG OILFIELD GROUP Co.,Ltd. Patentee after: TIANJIN DAGANG OILFIELD PETROLEUM ENGINEERING RESEARCH INSTITUTE DRILLING AND PRODUCTION TECHNOLOGY DEVELOPMENT CO. Address before: Three Dagang oil field, Tianjin, Grand Port, No. 300280 Co-patentee before: DAGANG OILFIELD GROUP Co.,Ltd. Patentee before: TIANJIN DAGANG OIL FIELD DRILLING TECHNOLOGY DEVELOPMENT CO. |
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Address after: 300280 Tianjin Binhai New Area Dagang Oilfield No. three hospital Co-patentee after: DAGANG OILFIELD GROUP Co.,Ltd. Patentee after: Tianjin Dagang Oilfield Petroleum Engineering Research Institute Drilling Technology Development Co.,Ltd. Address before: 300280 Tianjin Binhai New Area Dagang Oilfield No. three hospital Co-patentee before: DAGANG OILFIELD GROUP Co.,Ltd. Patentee before: TIANJIN DAGANG OILFIELD PETROLEUM ENGINEERING RESEARCH INSTITUTE DRILLING AND PRODUCTION TECHNOLOGY DEVELOPMENT CO. Address after: 300280 Tianjin Binhai New Area Dagang Oilfield No. three hospital Co-patentee after: DAGANG OILFIELD GROUP Co.,Ltd. Patentee after: TIANJIN DAGANG OILFIELD PETROLEUM ENGINEERING RESEARCH INSTITUTE DRILLING AND PRODUCTION TECHNOLOGY DEVELOPMENT CO. Address before: 300280 Tianjin Binhai New Area Dagang Oilfield No. three hospital Co-patentee before: DAGANG OILFIELD GROUP Co.,Ltd. Patentee before: TIANJIN DAGANG OIL FIELD DRILLING TECHNOLOGY DEVELOPMENT CO. |
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Effective date of registration: 20201120 Address after: 300000 No. three, Dagang Oilfield, Binhai New Area, Tianjin Patentee after: Tianjin Dagang Oilfield Petroleum Engineering Research Institute Drilling Technology Development Co.,Ltd. Patentee after: DAGANG OILFIELD GROUP Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Address before: 300280 No. three, Dagang Oilfield, Binhai New Area, Tianjin Patentee before: Tianjin Dagang Oilfield Petroleum Engineering Research Institute Drilling Technology Development Co.,Ltd. Patentee before: DAGANG OILFIELD GROUP Co.,Ltd. |