CN103628834B - Locking-type expandable liner hanger - Google Patents
Locking-type expandable liner hanger Download PDFInfo
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- CN103628834B CN103628834B CN201210301905.3A CN201210301905A CN103628834B CN 103628834 B CN103628834 B CN 103628834B CN 201210301905 A CN201210301905 A CN 201210301905A CN 103628834 B CN103628834 B CN 103628834B
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- locking
- coupling sleeve
- expansion
- tube
- liner hanger
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Abstract
The present invention relates to a kind of locking-type expandable liner hanger, by top connection, central tube, sand control cap, expansion tube, expansion cone, spacer ring and sealing cup etc. are constituted, wherein, top connection is threadedly coupled with central tube, central tube is threadedly coupled with coupling sleeve, lower contact upper end is enclosed within coupling sleeve lower end outer surface, tail pipe plug upper end is placed in the endoporus of coupling sleeve lower end, coupling sleeve is fixedly connected with tail pipe plug, lower contact is threadedly coupled with expansion tube, there is sand control cap at expansion tube horn mouth, coupling sleeve is locked with lower contact, lower contact is connected with lower link pipe screw thread, center tube outer surface is cased with expansion cone, spacer ring and sealing cup, expansion pipe outer wall has suspension rubber and annular protrusion.Locking-type expandable liner hanger of the present invention is applied in old street district well tail tube hanging technique, be capable of achieving sit hang, sealing one, tail pipe latus rectum is big after suspension, it is ensured that other later stage intraductal operations it is unobstructed.
Description
Technical field
The present invention relates to a kind of extension hanger for sidetracked hole liner completion, particularly a kind of locking-type expansion tail pipe
Hanger.
Background technology
At present, tail tube hanging technology can reduce well cementing casing pipe overlap, save sleeve pipe, reduce cemented pressure, simplify well
Deep structure, solves deep-well, the well cementation problem of Holes of Complicated Wells.
New packer liner-hanger Suspension Technique has mechanical and two kinds of fluid pressure type, is substantially all and is hung using slips mode, and one
As do not possess sealing function, and internal diameter is smaller, it has also become the weak link in liner completion tubing string.It is complete especially for sidetracked hole
Well, is limited by borehole size, more constrains the use of new packer liner-hanger hanger, while with deep-well, ultradeep well, level
The exceptional wells such as well are on the increase, and hole condition is more complicated, and under this severe hole condition, sitting occurs often in new packer liner-hanger hanger
Situations such as hanging, set failure, has a strong impact on final completion cost and efficiency.
Chinese utility model patent prospectus CN2159452 discloses one kind with the automatic tail pipe hanging device in position, is
A kind of typical slip-type takes off automatically with position hangs extension hanger, and it uses slips to be hung with internal surface of sleeve pipe.The tail pipe hangs
Hanging device is sat after hanging, and the latus rectum inside tail pipe is small, is unfavorable for subsequent job, and enters extension hanger and cemented process under
Middle tail pipe can not rotate, and cementing quality is bad.
Existing buckling type tail pipe hanger complex structure, it utilizes fluid pressure type distending expansion tube, is that expansion tube enters with sleeve pipe
Row suspension.US7225880B2 and CN200710178299.X are two kinds of buckling type tail pipe hangers, and the former is using from up to down swollen
Open expansion tube mode, complex structure.Though the bottom-up distending expansion tube of the latter, internal tubing string with tail pipe is connected by screw thread
Connect, it is necessary to rotating tubing string can just propose central tube, complex process, operating difficulties.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of locking-type expandable liner hanger, overcomes buckling type tail to hang
Hanging device distending expansion tube mode from the top down；Buckling type tail pipe hanger is overcome to use thread connecting mode and expansion tube with tail pipe
Upper end uses thread connecting mode with drilling tool, and rotation is needed after the completion of operation, and tubing string could propose tubing string twice, and complex process is not
Foot.
In order to solve the above technical problems, locking-type expandable liner hanger of the present invention, by top connection 1, central tube 2, sand control
Cap 3, expansion tube 4, expansion cone 5, spacer ring 6, sealing cup 7, coupling sleeve 8, closing piece 9, shear pin 10, tail pipe plug 11, lower contact 12,
Second line of a couplet adapter 13, suspension rubber 14 and annular protrusion 15 are constituted, wherein, the lower end of above-mentioned top connection 1 connects with the threaded upper ends of central tube 2
Connect, the lower end of central tube 2 is connected with the upper end left hand thread of coupling sleeve 8, the upper end of lower contact 12 is enclosed within the lower end outer surface of coupling sleeve 8, tail
The upper end of pipe plug 11 is placed in the endoporus of the lower end of coupling sleeve 8, and coupling sleeve 8 and tail pipe plug 11 are fixed with shear pin 10, in lower contact 12
End is threadedly coupled with the lower end of expansion tube 4, and sand control cap 3 is provided with the upper end horn mouth of expansion tube 4, and coupling sleeve 8 is used with lower contact 12
Closing piece 9 is locked, and the lower end of lower contact 12 is connected with the threaded upper ends of second line of a couplet adapter 13, and the outer surface of central tube 2 is cased with expansion cone 5, spacer ring 6
With sealing cup 7, the outer wall of expansion tube 4 vulcanizes has suspension rubber 14 and equipped with annular protrusion 15.
The surface of above-mentioned lower contact 12, the inside and outside wall of coupling sleeve 8 and the upper end outer wall of tail pipe plug 11 are respectively provided with O-ring seal.
The longitudinal section of above-mentioned annular protrusion 15 is trapezoidal.Above-mentioned annular protrusion 15 is steel.
Above-mentioned expansion cone 5, sealing cup 7 respectively with the inwall interference fit seal of expansion tube 4.
Above-mentioned expansion cone 5, spacer ring 6, sealing cup 7 coordinate with the dynamic sealing of central tube 2.
Above-mentioned shear pin 10 is circumferential uniform four.Above-mentioned closing piece 9 is circumferential uniform four.
The upper end of above-mentioned top connection 1 sets internal thread.The above-mentioned lower end of second line of a couplet adapter 13 sets external screw thread.
Compared with present technical scheme, locking-type expandable liner hanger of the present invention, using hydraulic pressure distending expansion tube and set
Inside pipe wall is in close contact and carries out suspension tail pipe, and central tube is connected with pipe lower tail by the lock function of closing piece；Using brill
Bar plug promotion tail pipe plug makes closing piece drop, and hydraulic pressure is acted directly in expansion cone by closing piece hole, under promoting expansion cone certainly
Upward distending expansion tube；When enter process under tubing string and occur meeting card and can not on put put when, by a left side for central tube and coupling sleeve
Rotation screw connection structure, just can fall open proposition by tubing string；This hanger simple structure, technique are easy, easy to operate, suspension success rate
High, good seal performance；After suspension, latus rectum in larger tubing string can be obtained, be easy to the production measure operation in later stage.
Brief description of the drawings
Specific embodiment of the invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of locking-type expandable liner hanger of the present invention；
Fig. 2 is the partial structural diagram of Fig. 1.
Specific embodiment
As depicted in figs. 1 and 2, locking-type expandable liner hanger of the present invention, the upper end of top connection 1 connects equipped with drill rod thread
Head, can connect drill string；The internal diameter of central tube 2 is identical with top rod internal diameter；The external diameter surface of expansion tube 4 has three groups of Hes of suspension rubber 14
Four groups of annular protrusions 15, the external diameter of suspension rubber 14 is more than the external diameter of annular protrusion 15, and expansion cone 5 is designed using conical banda arc surface,
It is 16.5MPa that shear pin cuts pressure；The lower contact 12 of coupling sleeve 8 is locked using closing piece 9, lower contact 12 and the screw thread of second line of a couplet adapter 13
Connection, the union tail of second line of a couplet adapter 13, tail pipe is serially connected with and connects plug basket, and it act as stopping that tail pipe plug 11 is descending, makes tail pipe glue
Plug 11 is stopped and plays sealing function.
After the cement that will first design is by design injection bore hole, present invention tail pipe string of ining succession is lowered into precalculated position, thrown
Enter drilling rod plug and pump into completion fluid, completion fluid promotes drilling rod plug to come downwards to the top of tail pipe plug 11 along the inwall of central tube 2 and touches
Pressure, tail pipe plug 11 cuts shear pin 10 under the effect of the pressure, and the Compounded rubber plug that drilling rod plug and tail pipe plug 11 are constituted is complete
Continued traveling downwardly along the inwall of second line of a couplet adapter 13 in the presence of well liquid pressure.Come downwards to connect plug basket position when, the head of tail pipe plug 11 with
Plug basket internal taper hole interference fit is connect, sealing is formed；Continuing to pump into completion fluid makes pressure rise, and completion fluid is from closing piece hole direct effect
On sealing cup 7, pressure is delivered to spacer ring 6 and is delivered to again in expansion cone 5 from sealing cup 7, and the common upward sliding of three is swollen
Open expansion tube 4, suspension rubber 14 above expansion tube 4 is squeezed on internal surface of sleeve pipe with annular protrusion 15, formed it is firm and
Reliable sealing, realizes that tail pipe is sat and hangs；When being expanded, expansion cone 5, spacer ring 6, sealing cup 7 on the central tube 2 and
Sealing function is played during expansion, this sealing function is that plastic deformation is occurred by the body of expansion tube 4 and is formed.Expansion is completed
Afterwards, upper lifting pipe post, closing piece 9 comes off, and releases the locking of coupling sleeve 8 and lower contact 13, and central tube 2 is inconjunction with coupling sleeve 8 and is suggested
During, expansion cone 5, spacer ring 6, sealing cup 7 and sand control cap 3 are also suggested in the lump, are not left in any annex in shaft bottom,
Later stage measure operation can directly be carried out.
If enter under tail pipe process be hampered card and can not on put when putting, it is left-handed with coupling sleeve 8 using central tube 2
Screw connection structure is designed, and rotate counterclockwise tubing string opens screw thread, just it is proposed that tubing string, carries out lower step remedial measure.
Claims (10)
1. a kind of locking-type expandable liner hanger, by top connection (1), central tube (2), sand control cap (3), expansion tube (4), expansion
Cone (5), spacer ring (6), sealing cup (7), coupling sleeve (8), closing piece (9), shear pin (10), tail pipe plug (11), lower contact (12),
Second line of a couplet adapter (13), suspension rubber (14) and annular protrusion (15) composition, it is characterized in that：Top connection (1) lower end and center
Pipe (2) threaded upper ends connection, central tube (2) lower end is connected with coupling sleeve (8) upper end left hand thread, and lower contact (12) upper end is enclosed within
Coupling sleeve (8) lower end outer surface, tail pipe plug (11) upper end is placed in the endoporus of coupling sleeve (8) lower end, coupling sleeve (8) and tail pipe glue
Plug (11) is fixed with shear pin (10), and lower contact (12) upper end is threadedly coupled with expansion tube (4) lower end, expansion tube (4) upper end loudspeaker
Sand control cap (3), coupling sleeve (8) and lower contact (12) closing piece (9) locking, lower contact (12) lower end and lower link are installed at mouthful
Pipe (13) threaded upper ends connection, central tube (2) outer surface is cased with expansion cone (5), spacer ring (6) and sealing cup (7), expansion tube
(4) outer wall vulcanization has suspension rubber (14) and equipped with annular protrusion (15)；
Completion fluid promotes drilling rod plug to come downwards to tail pipe plug (11) top, the tail pipe along the central tube (2) inwall
Plug (11) cuts the shear pin (10) under pressure, and it is compound that the drilling rod plug and the tail pipe plug (11) are constituted
Plug is continued traveling downwardly in the presence of completion hydraulic coupling along second line of a couplet adapter (13) inwall；
Completion fluid is acted directly on the sealing cup (7), and pressure is delivered to the spacer ring (6) from the sealing cup (7)
It is delivered to again in the expansion cone (5), the sealing cup (7), the spacer ring (6) and the expansion cone (5) slide up jointly
It is dynamic, expansion tube described in distending (4)；
After the completion of expansion, upper lifting pipe post, the closing piece (9) comes off, and releases the lock of the coupling sleeve (8) and the lower contact (12)
Fixed, the central tube (2) is inconjunction with the coupling sleeve (8), the expansion cone (5), the spacer ring (6), the sealing cup (7)
Proposed together with the sand control cap (3)；
When enter under the tubing string process occur meet card and can not on put put when, it is left-handed with coupling sleeve (8) using central tube (2)
Screw connection structure, rotate counterclockwise tubing string opens screw thread and proposes tubing string, carries out lower step remedial measure.
2. locking-type expandable liner hanger according to claim 1, it is characterized in that：Lower contact (12) surface, connection
Female connector (8) inside and outside wall and tail pipe plug (11) upper end outer wall are respectively provided with O-ring seal.
3. locking-type expandable liner hanger according to claim 1, it is characterized in that：Annular protrusion (15) longitudinal section
For trapezoidal.
4. the locking-type expandable liner hanger according to claim 1 or 3, it is characterized in that：The annular protrusion (15) is
Steel.
5. locking-type expandable liner hanger according to claim 1, it is characterized in that：The expansion cone (5), sealing cup
(7) respectively with expansion tube (4) inwall interference fit seal.
6. locking-type expandable liner hanger according to claim 1, it is characterized in that：The expansion cone (5), spacer ring (6),
Sealing cup (7) coordinates with central tube (2) dynamic sealing.
7. locking-type expandable liner hanger according to claim 1, it is characterized in that：The shear pin (10) circumferential uniform four
It is individual.
8. locking-type expandable liner hanger according to claim 1, it is characterized in that：The closing piece (9) circumferential uniform four
It is individual.
9. locking-type expandable liner hanger according to claim 1, it is characterized in that：Top connection (1) upper end is set
Internal thread.
10. locking-type expandable liner hanger according to claim 1, it is characterized in that：The second line of a couplet takes over (13) lower end
External screw thread is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210301905.3A CN103628834B (en) | 2012-08-23 | 2012-08-23 | Locking-type expandable liner hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210301905.3A CN103628834B (en) | 2012-08-23 | 2012-08-23 | Locking-type expandable liner hanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103628834A CN103628834A (en) | 2014-03-12 |
| CN103628834B true CN103628834B (en) | 2017-06-06 |
Family
ID=50210251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210301905.3A Active CN103628834B (en) | 2012-08-23 | 2012-08-23 | Locking-type expandable liner hanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103628834B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10760382B2 (en) * | 2017-09-26 | 2020-09-01 | Baker Hughes, A Ge Company, Llc | Inner and outer downhole structures having downlink activation |
| CN108131103B (en) * | 2017-11-15 | 2019-11-08 | 中国石油天然气股份有限公司 | It is a kind of applied to the interlocking connector tool for above mentioning expanding method |
| CN110905428A (en) * | 2019-12-17 | 2020-03-24 | 淮安市井神钻采机具有限公司 | Composite super-expansion cementing liner hanger |
| CN111535770A (en) * | 2020-07-13 | 2020-08-14 | 海塔石油科技有限公司 | Expansion suspension casing repairing well completion device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201276995Y (en) * | 2008-10-22 | 2009-07-22 | 大港油田集团有限责任公司 | Tail pipe hanger with control lock |
| CN201280909Y (en) * | 2008-05-09 | 2009-07-29 | 中国石油集团川庆钻探工程有限公司 | Composite pressure suppression rotational flow tail tube suspension packer |
| CN101598006A (en) * | 2009-07-17 | 2009-12-09 | 中国石油集团渤海石油装备制造有限公司石油机械厂 | A kind of hydraulic buckling type tail pipe hanger |
| CN101614117A (en) * | 2009-07-30 | 2009-12-30 | 中国石油天然气股份有限公司 | A kind of expansion tube type liner hanger |
| CN202832323U (en) * | 2012-08-23 | 2013-03-27 | 中国石油天然气股份有限公司 | Locking type expansion drilling liner hanger |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8100188B2 (en) * | 2007-10-24 | 2012-01-24 | Halliburton Energy Services, Inc. | Setting tool for expandable liner hanger and associated methods |
-
2012
- 2012-08-23 CN CN201210301905.3A patent/CN103628834B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201280909Y (en) * | 2008-05-09 | 2009-07-29 | 中国石油集团川庆钻探工程有限公司 | Composite pressure suppression rotational flow tail tube suspension packer |
| CN201276995Y (en) * | 2008-10-22 | 2009-07-22 | 大港油田集团有限责任公司 | Tail pipe hanger with control lock |
| CN101598006A (en) * | 2009-07-17 | 2009-12-09 | 中国石油集团渤海石油装备制造有限公司石油机械厂 | A kind of hydraulic buckling type tail pipe hanger |
| CN101614117A (en) * | 2009-07-30 | 2009-12-30 | 中国石油天然气股份有限公司 | A kind of expansion tube type liner hanger |
| CN202832323U (en) * | 2012-08-23 | 2013-03-27 | 中国石油天然气股份有限公司 | Locking type expansion drilling liner hanger |
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| Publication number | Publication date |
|---|---|
| CN103628834A (en) | 2014-03-12 |
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