CN104005725A - Expansion pipe two-stage expansion device - Google Patents
Expansion pipe two-stage expansion device Download PDFInfo
- Publication number
- CN104005725A CN104005725A CN201310060171.9A CN201310060171A CN104005725A CN 104005725 A CN104005725 A CN 104005725A CN 201310060171 A CN201310060171 A CN 201310060171A CN 104005725 A CN104005725 A CN 104005725A
- Authority
- CN
- China
- Prior art keywords
- expansion
- head
- tube
- reducing
- central tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
Provided is an expansion pipe two-stage expansion device. For overcoming the shortcoming that an existing reducing expansion head props a conical piece open by lifting and pulling an expansion tip cone and accordingly expansion according to expected size of the reducing expansion head cannot be ensured, the expansion pipe two-stage expansion device consists of an expansion pipe body at the upper portion and an emission chamber at the power portion, wherein the inner diameter of the emission chamber is larger than that of the expansion pipe body. The reducing expansion head and a fixed-diameter expansion head are located in the emission chamber, the reducing expansion head is located under the fixed-diameter expansion head, the maximum outer diameter of the fixed-diameter expansion head is identical to the inner diameter of the emission chamber, a central pipe is coaxially installed in the expansion pipe, and a plug-in assembly, a hydraulic cylinder assembly, a fixed-diameter expansion head assembly, a control mechanism and a reducing expansion head assembly are sequentially installed in an annular cavity between the central pipe and the expansion pipe from top to bottom. The expansion pipe two-stage expansion device has the advantages of being reasonable in structure, facilitating compensation on a casing pipe with large drift diameter at the lower portion through a small sized casing pipe or a well, enabling the inner diameter of the expanded expansion pipe to be round and regular and providing good shaft conditions for following-up construction operation.
Description
Technical field
The expansion operation kit that the present invention relates to a kind of oil and gas development expansion tube, especially relates to a kind of expansion tube twin-stage expansion gear.
Background technology
Tapping the potential and upgrade technologically in process of old filed, in order to obtain larger latus rectum, sometimes use expansion tube completion.And along with the exploitation in oil field, being subject to many factors, it is more and more that the leakage of Casing Failure, distortion, dislocation etc. damage, and had a strong impact on the normal production in oil field, and the damaged part of sleeve pipe is repaired the application life that can extend sleeve pipe tubing string.The construction of expansion tube is to utilize oil pipe or drilling rod that bloat tool and expansion tube are lowered into precalculated position, by pumping liquid in tubing string and build the pressure, rely on fluid pressure to promote expansion-head relative expansion pipe and move, by expansion tube along radial direction support greatly, complete the expansion process of expansion tube.
At present, expansion tube expansion-head outside dimension used in expansion process is fixed, and be arranged in advance in expansion tube bay, therefore the external diameter of bay is larger than other entity part external diameter, after expanding, the external diameter of expansion tube entity is identical with bay external diameter or bigger.Therefore, little for top latus rectum, bottom latus rectum is large sleeve pipe or pit shaft, the expansion tube that cannot be lowered to suitable size is subsidized the large diameter through sleeve in bottom or in the pit shaft of bottom, is carried out expansion tube completion.Disclosed Chinese utility model patent on February 9th, 2011 " a kind of sheath repairing tool " (publication number CN201738854U), by the swollen head of rigidity and elastic expansion head double expansion, in the time lifting tubing string and move up, rigidity is swollen, and head first carries out elementary expansion, then elastic expansion head continues to expand, reduce expansion resistance, expansion tube is tightly subsidized on internal surface of sleeve pipe, effectively prevent because of expansion force too high, expansion-head is stuck, cause the generation of the accidents such as subsidy inefficacy, but after subsidy tool assemble, elastic expansion head has been just maximum outside diameter size, can not realize expansion tube little by top latus rectum, the sleeve pipe that bottom latus rectum is large or pit shaft, the large diameter through sleeve in bottom is subsidized or in the pit shaft of bottom, carried out expansion tube completion.
The patent " umbrella type variable gauge inflate tool for expansion tube " (publication number CN101906947A) that on December 8th, 2010 announces, is the umbrella type variable footpath bloat tool that a kind of expansion tube is used, and comprises fixed cone and reducing cone two parts.Fixed cone is up-narrow and down-wide cone through-hole structure, opening of reducing cone is to rely on to lift expansion addendum cone and strut cone sheet, can not ensure reducing expansion cone swell to estimate size, and after reducing expansion cone swells, contacting on circumference is discontinuous with expansion tube, therefore the internal diameter after expansion tube expansion is not regular circle, is unfavorable for follow-up construction operation.
Summary of the invention
Rely on and lift expansion addendum cone and strut cone sheet in order to overcome existing reducing expansion-head, can not ensure reducing expansion-head swell to estimate size, and contacting on circumference is discontinuous deficiency with expansion tube after reducing expansion-head swells, the invention provides 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 comprises 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, bay internal diameter is greater than the internal diameter of expansion tube body, and expansion tube body and bay are by inclined-plane and arc surface transition; Reducing expansion-head, sizing expansion-head are positioned at bay, 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, in expansion tube, be coaxially installed with central tube, the annular space between central tube and expansion tube is provided with grafting assembly, hydraulic cylinder assembly, sizing expansion-head assembly, controlling organization, reducing expansion-head assembly from top to bottom successively.
The epivalve body of reducing expansion-head assembly, hypovalve body, lobe body seat are from top to bottom installed successively; The outer lug boss of epivalve body upper end is arranged in the groove of coupling sleeve lower end endoporus; The outer lug boss of hypovalve body lower end is arranged in the groove of lobe body seat upper end endoporus.
There is radial direction through hole the hydraulic cylinder assembly piston below of central tube; Between the sizing expansion-head assembly of central tube and reducing expansion-head assembly, limited block is radially installed, one end of limited block protrudes from the endoporus of central tube.
The epivalve body of reducing expansion-head assembly, the lobe number of hypovalve body are respectively more than 2 or 2, and quantity equates; Epivalve body and hypovalve body are staggered along the circle spacing, and the cross section of composition is annular.
The original state of expansion tube twin-stage expansion gear assembling, axial distance when epivalve body and hypovalve body axial distance are greater than reducing expansion-head epivalve body, hypovalve body combination net shape.
The epivalve body of reducing expansion-head assembly, the reducing expansion-head upper end of the rear net shape of hypovalve body combination are that up-small and down-big Rotary-table, lower end is up big and down small Rotary-table; The large end of two Rotary-tables is measure-alike, by arc surface transition.After epivalve body, the combination of hypovalve body, 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 narrows gradually, and the cross section of hypovalve body from top to bottom broadens gradually; After combination, the epivalve body of net shape reducing expansion-head and the contact surface curve of hypovalve body are continuous trapezoidal arrangement on periphery, and epivalve body equates with the radial dimension of hypovalve body on same cross section.
The original state of expansion tube twin-stage expansion gear assembling, epivalve body lower end and hypovalve body upper end tilt to central tube respectively, and 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 fixedly connected with central tube upper end; In the annular groove of top connection upper end endoporus, lock ring is installed, connection-peg bottom is inserted in top connection and is matched and be fixedly connected with lock ring.
The inner hole of cylinder of hydraulic cylinder assembly is up big and down small shoulder hole, and cylinder barrel small diameter bore is slidably mounted on central tube; The annular space middle part of cylinder barrel large diameter hole and central tube is provided with piston; The lock dog of installing in the radially lock dog groove of piston inserts the interior fixed piston of cannelure of central tube relevant position; Radial direction through hole on the central tube of piston below communicates with the annular space of cylinder barrel.The quantity of hydraulic cylinder assembly is more than 2 or 2.
The lining of sizing expansion-head assembly is slidably mounted on central tube, and lining is up big and down small multidiameter, and sizing expansion-head, black box are from top to bottom arranged on the pilot pin of lining successively; Lining lower end is installed with adapter sleeve.The endoporus of adapter sleeve is the shoulder hole that middle part is little, two ends are large, and small diameter inner hole and upper end larger diameter internal bore intermediate zone are annular groove, and the limited block of controlling organization is positioned at the below of annular groove; In the cannelure of adapter sleeve middle part small diameter inner hole, retaining ring is installed.
Lock ring is split ring, and lock ring endoporus is pawl gingival cyst of mucous gland in the newborn structure, has the pawl gingival cyst of mucous gland in the newborn structure matching with lock ring endoporus pawl gingival cyst of mucous gland in the newborn on connection-peg excircle.Retaining ring is split ring, and retaining ring endoporus is pawl gingival cyst of mucous gland in the newborn structure.
By drop into plug in central tube, plug is sitting on limited block, to filling liquid in central tube and build the pressure, the cylinder barrel down sliding of hydraulic cylinder assembly under pressure, sizing expansion-head assembly, adapter sleeve drive the epivalve body of reducing expansion-head assembly along central tube down sliding; In the limited block on central tube enters the annular groove of adapter sleeve, be arranged on the pinning that is meshed with the central tube excircle upper inverted tooth gingival cyst of mucous gland in the newborn of correspondence position of retaining ring on adapter sleeve, the epivalve body of reducing expansion-head assembly and hypovalve body are combined as the reducing expansion-head of net shape, and the geomery of reducing expansion-head is fixed.
The invention has the beneficial effects as follows, rational in infrastructure, sizing expansion-head and the combination of reducing expansion-head are arranged in expansion tube bay, the external diameter of reducing expansion-head is less than the external diameter of sizing expansion-head, while expanding construction, first the external diameter of reducing expansion-head becomes larger than sizing expansion-head, and external surface rounding, make the external diameter of bay become larger, be conducive to expansion gear by sleeve pipe or the well of reduced size, the sleeve pipe that bottom latus rectum is larger is subsidized, or carry out expansion tube completion in the larger well of latus rectum, after expansion, expansion tube internal diameter rounding rule, for follow-up construction operation provides good wellbore conditions.
Brief description of the drawings
Fig. 1 is expansion tube twin-stage expansion gear structural representation of the present invention.
Fig. 2 is schematic diagram after expansion tube twin-stage expansion gear input plug of the present invention.
Fig. 3 is the present invention's structural representation intention when working as reducing expansion-head size and determining.
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 tube, 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. epivalve bodies, 16. hypovalve bodies, 17. lobe body seats, 18. bays, 19. plugs, 20. radial direction through hole, 21. annular grooves.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.But those skilled in the art should know, the invention is not restricted to listed detailed description of the invention, as long as spirit according to the invention all should be included in protection scope of the present invention.
Referring to accompanying drawing 1～4.The expansion tube of expansion tube twin-stage expansion gear of the present invention is made up of the expansion tube body 8 on top and the bay 18 of bottom, and bay 18 internal diameters are greater than expansion tube body 8 internal diameters, and expansion tube body 8 and bay 18 are by inclined-plane and arc surface transition.In expansion tube, be coaxially installed with central tube 4, the annular space between central tube 4 and expansion tube is provided with grafting assembly, hydraulic cylinder assembly, sizing expansion-head assembly, controlling organization, reducing expansion-head assembly from top to bottom successively.Central tube 4 upper ends are connected with oil pipe or drilling rod by screw thread.
Reducing expansion-head, sizing expansion-head 10 are positioned at bay 18, sizing expansion-head 10 is positioned at the top of reducing expansion-head, sizing expansion-head 10 can be spherical, also can be the combination of two round platforms, be that top is up-small and down-big round platform, bottom is up big and down small round platform, and arc transition is passed through in centre; The maximum outside diameter of sizing expansion-head 10 is identical with bay 18 internal diameters.
Reducing expansion-head assembly is made up of epivalve body 15, hypovalve body 16, lobe body seat 17, and from top to bottom installs successively.The outer lug boss of epivalve body 15 upper ends is arranged in the groove of coupling sleeve 12 lower end endoporus; The outer lug boss of hypovalve body 16 lower ends is arranged in the groove of lobe body seat 17 upper end endoporus.The epivalve body 15 of reducing expansion-head assembly, the lobe number of hypovalve body 16 are respectively more than 2 or 2, and quantity equates.Epivalve body 15, the hypovalve body 16 of reducing expansion-head assembly are staggered along the circle spacing, and after their combinations, the reducing expansion-head upper end of net shape is that up-small and down-big Rotary-table, lower end is up big and down small Rotary-table; The large end of two Rotary-tables is measure-alike, by arc surface transition.After epivalve body 15,16 combinations of hypovalve body, 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 reducing expansion-head cross section of net shape is annular.
The cross section of epivalve body 15 from top to bottom narrows gradually, and the cross section of hypovalve body 16 from top to bottom broadens gradually; After combination, the epivalve body 15 of net shape reducing expansion-head and the contact surface curve of hypovalve body 16 are continuous trapezoidal arrangement on periphery, and epivalve body 15 equates with the radial dimension of hypovalve body 16 contact surfaces.
When expansion tube twin-stage expansion gear is the original state of assembling, gapped between epivalve body 15 and hypovalve body 16, axial distance when axial distance is greater than reducing expansion-head epivalve body 15, hypovalve body 16 and combines net shape; Epivalve body 15 lower ends and hypovalve body 16 upper ends tilt to central tube 4 respectively, and now the outside dimension of reducing expansion-head is less than the internal diameter size of bay 18.
Grafting assembly comprises connection-peg 1 and top connection 3, and insert in top connection 3 endoporus the bottom of connection-peg 1, and top connection 3 lower ends are fixedly connected with central tube 4 upper ends.In the annular groove of top connection 3 upper end endoporus, lock ring 2 is installed, lock ring 2 is split ring, and its endoporus is pawl gingival cyst of mucous gland in the newborn structure.Insert in top connection 3 connection-peg 1 bottom, 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, and connection-peg 1 is connected with top connection 3 axial restraints.
Hydraulic cylinder assembly comprises cylinder barrel 5, piston 6 and lock dog 7.Cylinder barrel 5 endoporus are up big and down small shoulder hole, and the small-diameter circular borehole jack of cylinder barrel 5, on central tube 4, can slide up and down along central tube 4.The annular space middle part of the major diameter round hole of cylinder barrel 5 and central tube 4 is provided with piston 6, in the radially lock dog groove of piston 6, lock dog 7 is installed, and insert in the cannelure of central tube 4 relevant positions, by piston 6 axial restraints one end of lock dog 7.There is radial direction through hole 20 below of the hydraulic cylinder assembly piston 6 of central tube 4, and radial direction through hole 20 is communicated with central tube endoporus with the annular space of cylinder barrel 5.The quantity of hydraulic cylinder assembly is definite according to indexs such as the intensity of expansion tube, is generally more than 2 or 2, and structure is identical.
Sizing expansion-head assembly comprises lining 9, sizing expansion-head 10, black box 11, and lining 9 is slidably mounted on central tube 4.Lining 9 is up big and down small multidiameter, sizing expansion-head 10, black box 11 are from top to bottom arranged on the pilot pin of lining 9 successively, black box 11 is made up of several rubber rings and spacer ring conventionally, annular space between seal cartridge 9 and expansion tube bay 18, is provided with radial direction seal ring between lining 9 and central tube 4.Lining 9 lower ends are installed with adapter sleeve 12.
The endoporus of adapter sleeve 12 is the shoulder hole that middle part is little, two ends are large, and small diameter inner hole and upper end larger diameter internal bore intermediate zone are annular groove 21.The limited block 13 that controlling organization is installed on the central tube 4 of annular groove 21 belows, the end nipple of limited block 13 is for the endoporus of central tube 4.In the cannelure of adapter sleeve 12 middle part small diameter inner holes, retaining ring 14 is installed, retaining ring 14 is split ring, and endoporus is pawl gingival cyst of mucous gland in the newborn structure.On central tube 4 cylindricals of limited block 13 belows, there is pawl gingival cyst of mucous gland in the newborn, can engage with the pawl gingival cyst of mucous gland in the newborn on retaining ring 14 endoporus.
Referring to Fig. 2.By to the interior input plug 19 of central tube 4, plug 19 is sitting on limited block 13; To filling liquid in central tube and build the pressure, promote cylinder barrel 5 down slidings of hydraulic cylinder assembly, sizing expansion-head assembly, adapter sleeve 12 drive the epivalve body 15 of reducing expansion-head assembly along central tube 4 down slidings.In the limited block 13 on central tube 4 enters the annular groove 21 of adapter sleeve 12, be arranged on the pinning that is meshed of pawl gingival cyst of mucous gland in the newborn on central tube 4 excircles of retaining ring 14 on adapter sleeve 12 and correspondence position, the epivalve body 15 of reducing expansion-head assembly and hypovalve body 16 are combined as the reducing expansion-head of net shape, and the geomery of reducing expansion-head is fixed.
Applying the process that expansion tube twin-stage expansion gear of the present invention carries out expansion tube construction operation is:
First, by complete other component assemblings that do not comprise connection-peg 1, plug 19, and send into pit shaft, the now axial distance maximum between epivalve body 15 and hypovalve body 16, gapped between epivalve body 15 and hypovalve body 16; The lower end that again connection-peg 1 upper end is fixedly connected on to oil pipe/drilling rod, is lowered in expansion tube; Suitably pressurization, makes the pawl gingival cyst of mucous gland in the newborn on connection-peg 1 engage with the pawl gingival cyst of mucous gland in the newborn of lock ring 2, completes quick connection, expansion tube is transported to precalculated position (referring to Fig. 1) with oil pipe/drilling rod.
Then, in oil pipe/drilling rod, drop into plug 19(referring to accompanying drawing 4), pumping liquid promotes plug 19 and moves downward, until plug 19 sits on (referring to Fig. 2) on limited block 13, forms a closed chamber in the oil pipe/drilling rod on plug 19 tops; While continuing pumping liquid, along with the rising of oil pipe or drilling rod internal pressure, fluid pressure imports hydraulic cylinder into by the radial direction through hole 20 on central tube 4, promote cylinder barrel 5 and move downward, and then promote lining 9, expansion-head 10, black box 11, adapter sleeve 12, the relative central tube 4 of epivalve body 15 by cylinder barrel 5 and move down; Epivalve body 15 and hypovalve body 16 are pegged graft mutually, and their outer profile sizes on radial direction progressively increase, and the expansion tube that swells.In the time being plugged into certain position, their maximum outside diameter reaches the size of expectation, the complete circumference of track formation rule contacting with expansion tube; Now the pawl gingival cyst of mucous gland in the newborn of retaining ring 14 engages locking with the pawl gingival cyst of mucous gland in the newborn of central tube 4 relevant positions, and epivalve body 15 no longer relatively moves with hypovalve body 16, and the shape and size of reducing expansion-head remain unchanged; Limited block 13 is positioned at annular groove 21 places of adapter sleeve 12.
Continue, to filling liquid in oil pipe/drilling rod, radially outwards to move at the promotion lower position block 13 of plug 19, enter in the annular groove 21 of adapter sleeve 12, limited block 13 is removed the constraint to plug 19; Plug 19 continues to move down, unimpeded in oil pipe/drilling rod, inside and outside be communicated with (referring to the Fig. 3) of central tube 4.Subsequently, fluid pressure passes to the annular space between central tube 4 and expansion tube, acts on black box 11, give sizing expansion-head 10 thrust upwards, add that well head hook upwards lifts oil pipe/drilling rod tubing string, twin-stage expansion gear is moved upward, realize the double expansion to expansion tube.
Expansion tube twin-stage expansion gear of the present invention is by sizing expansion-head and the combination of reducing expansion-head, in the time that the maximum outside diameter of its expansion tube is identical with the expansion tube maximum outside diameter of the single sizing expansion-head of use, expansion tube can obtain larger expansion rate, realize expansion tube by less sleeve pipe or the well of top latus rectum, the sleeve pipe of the larger latus rectum in bottom is subsidized or in the well of larger latus rectum, carried out expansion tube completion, and the expansion tube internal diameter rounding rule after expanding, guarantee reaches predetermined diameter dimension, for follow-up construction operation provides good wellbore conditions.
It should be noted that above-described embodiment is example and unrestricted the present invention, those skilled in the art can design a lot of alternate embodiments and not depart from the claim scope of this patent.
Claims (6)
1. an expansion tube twin-stage expansion gear, comprise 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, bay internal diameter is greater than the internal diameter of expansion tube body, and expansion tube body and bay are 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, and the maximum outside diameter of sizing expansion-head is identical with the internal diameter of bay, it is characterized in that:
In described expansion tube, be coaxially installed with central tube (4), the annular space between central tube (4) and expansion tube is provided with grafting assembly, hydraulic cylinder assembly, sizing expansion-head assembly, controlling organization, reducing expansion-head assembly from top to bottom successively;
The epivalve body (15) of reducing expansion-head assembly, hypovalve body (16), lobe body seat (17) are from top to bottom installed successively; The outer lug boss of epivalve body (15) upper end is arranged in the groove of coupling sleeve (12) lower end endoporus; The outer lug boss of hypovalve body (16) lower end is arranged in the groove of lobe body seat (17) upper end endoporus;
There is radial direction through hole (20) hydraulic cylinder assembly piston (6) below of described central tube (4); Between the sizing expansion-head assembly of central tube (4) and reducing expansion-head assembly, limited block (13) is radially installed, one end of limited block (13) protrudes from the endoporus of central tube (4).
2. expansion tube twin-stage expansion gear according to claim 1, is characterized in that:
The epivalve body (15) of described reducing expansion-head assembly, the lobe number of hypovalve body (16) are respectively more than 2 or 2, and quantity equates; Epivalve body (15) is staggered along the circle spacing with hypovalve body (16), and the cross section of composition is annular;
The original state of described expansion tube twin-stage expansion gear assembling, axial distance when epivalve body (15) is greater than reducing expansion-head epivalve body (15), hypovalve body (16) combination net shape with hypovalve body (16) axial distance;
The epivalve body (15) of described reducing expansion-head assembly, the reducing expansion-head upper end of the rear net shape of hypovalve body (16) combination are that up-small and down-big Rotary-table, lower end is up big and down small Rotary-table; The large end of 2 Rotary-tables is measure-alike, by arc surface transition; After described epivalve body (15), hypovalve body (16) 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 described epivalve body (15) from top to bottom narrows gradually, and the cross section of hypovalve body (16) from top to bottom broadens gradually; After combination, the epivalve body (15) of net shape reducing expansion-head and the contact surface curve of hypovalve body (16) are continuous trapezoidal arrangement on periphery, and epivalve body (15) equates with the radial dimension of hypovalve body (16) contact surface on same cross section;
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 tube (4) respectively, and the outside dimension of reducing expansion-head is less than the internal diameter size of bay (18).
3. expansion tube twin-stage expansion gear according to claim 2, is characterized in that:
Top connection (3) lower end of described grafting assembly is fixedly connected with central tube (4) upper end; In the annular groove of top connection (3) upper end endoporus, lock ring (2) is installed, connection-peg (1) bottom is inserted in top connection (3) and is matched and be fixedly connected with lock ring (2);
Cylinder barrel (5) endoporus of described hydraulic cylinder assembly is up big and down small shoulder hole, and cylinder barrel (5) small diameter bore is slidably mounted on central tube (4); The annular space middle part of cylinder barrel (5) large diameter hole and central tube (4) is provided with piston (6); The lock dog (7) of installing in the radially lock dog groove of piston (6) inserts the interior fixed piston (6) of cannelure of central tube (4) relevant position; Radial direction through hole (20) on piston (6) below central tube (4) communicates with the annular space of cylinder barrel (5);
It is upper that the lining (9) of described sizing expansion-head assembly is slidably mounted on central tube (4), and lining (9) is up big and down small multidiameter, and sizing expansion-head (10), black box (11) are from top to bottom arranged on the pilot pin of lining (9) successively; Lining (9) lower end is installed with adapter sleeve (12);
The endoporus of described adapter sleeve (12) is the shoulder hole that middle part is little, two ends are large, and small diameter inner hole and upper end larger diameter internal bore intermediate zone are annular groove (21), and the limited block (13) of described controlling organization is positioned at the below of annular groove (21); In the cannelure of adapter sleeve (12) middle part small diameter inner hole, retaining ring (14) is installed.
4. expansion tube twin-stage expansion gear according to claim 3, is characterized in that: the quantity of described hydraulic cylinder assembly is more than 2 or 2.
5. expansion tube twin-stage expansion gear according to claim 4, is characterized in that:
Described lock ring (2) is split ring, and lock ring (2) endoporus is pawl gingival cyst of mucous gland in the newborn structure, has the pawl gingival cyst of mucous gland in the newborn structure matching with lock ring (2) endoporus pawl gingival cyst of mucous gland in the newborn on connection-peg (1) excircle;
Described retaining ring (14) is split ring, and retaining ring (14) endoporus is pawl gingival cyst of mucous gland in the newborn structure.
6. according to any described expansion tube twin-stage expansion gear of claim 2-5, it is characterized in that: by drop into plug (19) in central tube (4), plug (19) is sitting on limited block (13), to the interior filling liquid of central tube (4) and build the pressure, the cylinder barrel of hydraulic cylinder assembly (5) down sliding under pressure, sizing expansion-head assembly, adapter sleeve (12) drive the epivalve body (15) of reducing expansion-head assembly along central tube (4) down sliding;
In the limited block (13) on described central tube (4) enters the annular groove (21) of adapter sleeve (12), be arranged on the pinning that is meshed with central tube (4) the excircle upper inverted tooth gingival cyst of mucous gland in the newborn of correspondence position of retaining ring (14) on adapter sleeve (12), the epivalve body (15) of reducing expansion-head assembly and hypovalve body (16) are combined as the reducing expansion-head of net shape, and the geomery of reducing expansion-head is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310060171.9A CN104005725B (en) | 2013-02-26 | 2013-02-26 | Expansion tube twin-stage expansion gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310060171.9A CN104005725B (en) | 2013-02-26 | 2013-02-26 | Expansion tube twin-stage expansion gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104005725A true CN104005725A (en) | 2014-08-27 |
| CN104005725B CN104005725B (en) | 2016-12-28 |
Family
ID=51366600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310060171.9A Active CN104005725B (en) | 2013-02-26 | 2013-02-26 | Expansion tube twin-stage expansion gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104005725B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453764A (en) * | 2014-12-16 | 2015-03-25 | 毛国武 | Stamping expansion and contraction pipe straightener |
| CN108240205A (en) * | 2016-12-24 | 2018-07-03 | 中石化石油工程技术服务有限公司 | Down-hole casing twin-stage bores expansion device and its operational method |
| CN109632497A (en) * | 2018-12-13 | 2019-04-16 | 大港油田集团有限责任公司 | It is a kind of for expanding the experimental provision and experimental method of tube swelling |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030075339A1 (en) * | 2001-10-23 | 2003-04-24 | Gano John C. | Wear-resistant, variable diameter expansion tool and expansion methods |
| 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 reducing 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 |
-
2013
- 2013-02-26 CN CN201310060171.9A patent/CN104005725B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030075339A1 (en) * | 2001-10-23 | 2003-04-24 | Gano John C. | Wear-resistant, variable diameter expansion tool and expansion methods |
| 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 reducing 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453764A (en) * | 2014-12-16 | 2015-03-25 | 毛国武 | Stamping expansion and contraction pipe straightener |
| CN108240205A (en) * | 2016-12-24 | 2018-07-03 | 中石化石油工程技术服务有限公司 | Down-hole casing twin-stage bores expansion device and its operational method |
| 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 |
| CN109632497A (en) * | 2018-12-13 | 2019-04-16 | 大港油田集团有限责任公司 | It is a kind of for expanding the experimental provision and experimental method of tube swelling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104005725B (en) | 2016-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203175447U (en) | Expansion pipe twin-stage expansion device | |
| CN101942979B (en) | Anchoring ball type casing truing unit and truing method thereof | |
| CN202284453U (en) | Hydraulic expansion casing centralizing nipple | |
| CN102966327A (en) | Expansion pipe | |
| CN103670324B (en) | Pawl sleeve type hydraulic packer | |
| CN104005725A (en) | Expansion pipe two-stage expansion device | |
| CN202832369U (en) | Double-stage composite well cementation rubber plug | |
| CN201843555U (en) | Hydraulic expansion cone for sleeve repair | |
| CN203097775U (en) | Hydraulic anchor | |
| CN201661268U (en) | Compensation type pilot-operated water injection packer | |
| CN202914019U (en) | Packer seat sealing mechanism for coiled tubing | |
| CN103375141A (en) | Expansion device of expansion pipe | |
| CN103132944B (en) | Sand-prevention hydraulic small-diameter packer | |
| CN103670297B (en) | Hydraulic casing pipe centering device | |
| CN112302563A (en) | Ultrashort-clamping-distance water injection sand prevention packer and operation method thereof | |
| CN201778711U (en) | Anchoring ball type truing device for sleeve pipes | |
| CN203515413U (en) | Mechanical and hydraulic dual-action ground anchor assembly | |
| CN103670328A (en) | Two-stage composite well-cementing rubber plug | |
| CN202325408U (en) | Outer sliding sleeve reverse circulation short section | |
| CN103174398B (en) | A kind of drillable press-fracturing bridge plug | |
| CN212803151U (en) | Double-anchoring double-packing tie-back system for staged fracturing string | |
| CN203655202U (en) | Arc-shaped variable-diameter expansion device of expansion pipe | |
| CN114135244A (en) | Hydraulic variable-level expansion tool for plugging while drilling and process method | |
| CN212428730U (en) | Shaft float switch | |
| CN210859161U (en) | Hydraulic control blowout preventer for pump oil pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
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. |
|
| CP03 | Change of name, title or address | ||
| CP01 | Change in the name or title of a patent holder |
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. |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
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. |
|
| TR01 | Transfer of patent right |