CN103628834A - Locking type expansion liner hanger - Google Patents
Locking type expansion liner hanger Download PDFInfo
- Publication number
- CN103628834A CN103628834A CN201210301905.3A CN201210301905A CN103628834A CN 103628834 A CN103628834 A CN 103628834A CN 201210301905 A CN201210301905 A CN 201210301905A CN 103628834 A CN103628834 A CN 103628834A
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- China
- Prior art keywords
- locking
- liner hanger
- expansion
- expandable liner
- pipe
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 125000006850 spacer group Chemical group 0.000 claims abstract description 11
- 229920001971 elastomer Polymers 0.000 claims abstract description 10
- 239000005060 rubber Substances 0.000 claims abstract description 10
- 239000004576 sand Substances 0.000 claims abstract description 7
- 230000008878 coupling Effects 0.000 claims description 19
- 238000010168 coupling process Methods 0.000 claims description 19
- 238000005859 coupling reaction Methods 0.000 claims description 19
- 241000282472 Canis lupus familiaris Species 0.000 claims description 12
- 239000000725 suspension Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000005987 sulfurization reaction Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 9
- 238000005553 drilling Methods 0.000 abstract description 6
- 230000002265 prevention Effects 0.000 abstract 2
- 230000010354 integration Effects 0.000 abstract 1
- 239000010985 leather Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 210000000664 rectum Anatomy 0.000 description 2
- 208000034656 Contusions Diseases 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The invention relates to a locking type expansion tail pipe hanger which comprises an upper joint, a central pipe, a sand prevention cap, an expansion pipe, an expansion cone, a spacer ring, a sealing leather cup and the like, wherein the upper joint is in threaded connection with the central pipe, the central pipe is in threaded connection with a connecting sleeve, the upper end of the lower joint is sleeved on the outer surface of the lower end of the connecting sleeve, the upper end of a tail pipe rubber plug is arranged in an inner hole in the lower end of the connecting sleeve, the connecting sleeve is fixedly connected with the tail pipe rubber plug, the lower joint is in threaded connection with the expansion pipe, the sand prevention cap is arranged at the bell mouth of the expansion pipe, the connecting sleeve is locked with the lower joint, the lower joint is in threaded connection with the lower connecting pipe, the expansion cone, the spacer ring and the. The locking type expansion liner hanger is applied to the liner hanging process of lateral drilling of an old well, can realize the integration of seating, hanging and sealing, has large drift diameter of a hanging liner, and can ensure the smoothness of in-pipe operation in other later periods.
Description
Technical field
The present invention relates to a kind of extension hanger for sidetracked hole liner completion, particularly a kind of locking-type expandable liner hanger.
Background technology
At present, it is overlapping that tail tube hanging technology can reduce well cementing casing pipe, saves sleeve pipe, reduces cemented pressure, simplifies well depth structure, solves deep-well, a well cementation difficult problem for Holes of Complicated Wells.
New packer liner-hanger Suspension Technique has two kinds of mechanical type and fluid pressure types, substantially all adopts slips mode to hang, and generally do not possess sealing function, and internal diameter is less, has become the weak link in liner completion tubing string.Especially for sidetracked hole completion, be subject to the restriction of borehole size, more restricted the use of new packer liner-hanger hanger, while being on the increase along with exceptional wells such as deep-well, ultradeep well, horizontal wells, hole condition is more complicated, under this severe hole condition, sitting extension, setting the situations such as inefficacy appears in new packer liner-hanger hanger often, has a strong impact on final completion cost and efficiency.
Chinese utility model patent prospectus CN2159452 discloses a kind of with the automatic tail pipe hanging device in position, is that a kind of typical slip-type is hung extension hanger with position automatic trip, and it adopts slips and internal surface of sleeve pipe to hang.After this extension hanger is sat and hung, the latus rectum of tail pipe inside is little, is unfavorable for subsequent job, and tail pipe can not rotate in being lowered to extension hanger and cemented process, 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 and sleeve pipe hang.US7225880B2 and CN200710178299.X are two kinds of buckling type tail pipe hangers, and the former adopts from up to down distending expansion tube mode, complex structure.Though the bottom-up distending expansion tube of the latter, inner tubing string is to rely on to be threaded with tail pipe, need to rotate tubing string and just can propose central tube, complex process, operating difficulties.
Summary 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 pipe hanger distending expansion tube mode from the top down; Overcome buckling type tail pipe hanger and tail pipe and adopt thread connecting mode and expansion tube upper end and drilling tool to adopt thread connecting mode, after operation completes, need to rotate twice tubing string and could propose tubing string, the deficiency of complex process.
For solving the problems of the technologies described above, 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, lock dog 9, shear pin 10, tail pipe plug 11, lower contact 12, the second line of a couplet takes over 13, suspension rubber 14 and annular protrusion 15 form, wherein, above-mentioned top connection 1 lower end is threaded with central tube 2 upper ends, central tube 2 lower ends are connected with coupling sleeve 8 upper end left hand threads, lower contact 12 upper ends are enclosed within coupling sleeve 8 lower end external surfaces, tail pipe plug 11 upper ends are placed in the endoporus of coupling sleeve 8 lower ends, coupling sleeve 8 and tail pipe plug 11 use shear pins 10 are fixing, lower contact 12 upper ends are threaded with expansion tube 4 lower ends, expansion tube 4 horn mouth places, upper end are provided with sand control cap 3, coupling sleeve 8 and lower contact 12 use lock dog 9 lockings, lower contact 12 lower ends are taken over 13 upper ends with the second line of a couplet and are threaded, and central tube 2 appearance surface covers have expansion cone 5, spacer ring 6 and sealing cup 7, expansion tube 4 outer wall sulfurations have suspension rubber 14 and annular protrusion 15 are housed.
Above-mentioned lower contact 12 surfaces, coupling sleeve 8 inside and outside walls and tail pipe plug 11 upper end outer walls all arrange O-ring seal.
Above-mentioned annular protrusion 15 longitudinal sections are trapezoidal.Above-mentioned annular protrusion 15 is steel.
Above-mentioned expansion cone 5, sealing cup 7 respectively with expansion tube 4 inwall interference fit seal.
Above-mentioned expansion cone 5, spacer ring 6, sealing cup 7 coordinate with central tube 2 movable sealings.
Circumferentially uniform four of above-mentioned shear pins 10.Circumferentially uniform four of above-mentioned lock dogs 9.
Above-mentioned top connection 1 upper end arranges internal thread.The above-mentioned second line of a couplet is taken over 13 lower ends external screw thread is set.
Compare with present technical scheme, locking-type expandable liner hanger of the present invention, utilizes hydraulic pressure distending expansion tube and internal surface of sleeve pipe close contact to hang tail pipe, and the lock function by lock dog is connected central tube and pipe lower tail; Utilize drilling rod plug to promote tail pipe plug lock dog is dropped, hydraulic pressure acts directly in expansion cone by lock dog hole, promotes the bottom-up distending expansion tube of expansion cone; When tubing string be lowered to that process occur to be met card and can not on put while putting, by the left hand thread syndeton of central tube and coupling sleeve, just tubing string can be opened to proposition; This hanger is simple in structure, simple process, easy to operate, hang that success rate is high, good seal performance; After suspension, can obtain latus rectum in larger tubing string, be convenient to the production measure operation in later stage.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is the structural representation of locking-type expandable liner hanger of the present invention;
Fig. 2 is the partial structurtes schematic diagram of Fig. 1.
The specific embodiment
As depicted in figs. 1 and 2, locking-type expandable liner hanger of the present invention, drill rod threaded nipple is equipped with in top connection 1 upper end, can connect drill string; Central tube 2 internal diameters are identical with top rod internal diameter; Expansion tube 4 external diameter surfaces have three groups of suspension rubbers 14 and four groups of annular protrusions 15, and suspension rubber 14 external diameters are greater than annular protrusion 15 external diameters, and expansion cone 5 adopts the design of taper band arc surface, and it is 16.5MPa that shear pin is cut off pressure; Utilize lock dog 9 by coupling sleeve 8 lower contact 12 lockings, lower contact 12 is taken over 13 with the second line of a couplet and is threaded, and the second line of a couplet is taken over 13 union tails, and tail pipe is serially connected with and connects plug basket, and it act as and stops that tail pipe plug 11 is descending, makes tail pipe plug 11 stop and play sealing function.
First the cement designing is injected after bore hole by design, the present invention's tail pipe string of ining succession is lowered into precalculated position, drop into drilling rod plug and pump into completion fluid, completion fluid promotes drilling rod plug and comes downwards to the 11 top bruisings of tail pipe plug along central tube 2 inwalls, tail pipe plug 11 is cut off shear pin 10 under the effect of pressure, and the Compounded rubber plug that drilling rod plug and tail pipe plug 11 form is taken over 13 inwalls along the second line of a couplet and continued descending under the effect of completion fluid pressure.Come downwards to and connect plug during basket position, tail pipe plug 11 heads with connect plug basket internal taper hole interference fit, form sealing; Continuing to pump into completion fluid raises pressure, completion fluid acts directly on sealing cup 7 from lock dog hole, pressure is delivered to spacer ring 6 from sealing cup 7 and is delivered to expansion cone 5 again, the common upward sliding of three, distending expansion tube 4, expansion tube 4 suspension rubber 14 is above squeezed on internal surface of sleeve pipe with annular protrusion 15, forms firm and sealing reliably, realize tail pipe and sit extension; When expanding, expansion cone 5, spacer ring 6, sealing cup 7 are contained on central tube 2 and when expanding and play sealing function, and this sealing function is formed by expansion tube 4 body generation plastic strain.After expansion completes, upper lifting pipe post, lock dog 9 comes off, remove the locking of coupling sleeve 8 and lower contact 13, central tube 2 is inconjunction with in the process that coupling sleeve 8 is suggested,, expansion cone 5, spacer ring 6, sealing cup 7 and sand control cap 3 are also suggested in the lump, can not stay any annex in shaft bottom, can directly carry out later stage measure operation.
If tail pipe be lowered to process be hampered card and can not on put while putting, utilize the left hand thread syndeton design of central tube 2 and coupling sleeve 8, be rotated counterclockwise tubing string, open screw thread, just can propose tubing string, carry out lower step remedial measure.
Claims (10)
1. a 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), lock dog (9), shear pin (10), tail pipe plug (11), lower contact (12), the second line of a couplet is taken over (13), suspension rubber (14) and annular protrusion (15) form, it is characterized in that: described top connection (1) lower end is threaded with central tube (2) upper end, central tube (2) lower end is connected with coupling sleeve (8) upper end left hand thread, lower contact (12) upper end is enclosed within coupling sleeve (8) lower end external surface, tail pipe plug (11) upper end is placed in the endoporus of coupling sleeve (8) lower end, coupling sleeve (8) and tail pipe plug (11) are fixing with shear pin (10), lower contact (12) upper end is threaded with expansion tube (4) lower end, horn mouth place, expansion tube (4) upper end is provided with sand control cap (3), coupling sleeve (8) and lock dog (9) locking for lower contact (12), lower contact (12) lower end is taken over (13) upper end with the second line of a couplet and is threaded, central tube (2) appearance surface cover has expansion cone (5), spacer ring (6) and sealing cup (7), the sulfuration of expansion tube (4) outer wall has suspension rubber (14) and annular protrusion (15) is housed.
2. locking-type expandable liner hanger according to claim 1, is characterized in that: described lower contact (12) surface, coupling sleeve (8) inside and outside wall and tail pipe plug (11) upper end outer wall all arrange O-ring seal.
3. locking-type expandable liner hanger according to claim 1, is characterized in that: described annular protrusion (15) longitudinal section is trapezoidal.
4. according to the locking-type expandable liner hanger described in claim 1 or 3, it is characterized in that: described annular protrusion (15) is steel.
5. locking-type expandable liner hanger according to claim 1, is characterized in that: described 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, is characterized in that: described expansion cone (5), spacer ring (6), sealing cup (7) coordinate with central tube (2) movable sealing.
7. locking-type expandable liner hanger according to claim 1, is characterized in that: circumferentially uniform four of described shear pins (10).
8. locking-type expandable liner hanger according to claim 1, is characterized in that: circumferentially uniform four of described lock dogs (9).
9. locking-type expandable liner hanger according to claim 1, is characterized in that: described top connection (1) upper end arranges internal thread.
10. locking-type expandable liner hanger according to claim 1, is characterized in that: the described second line of a couplet is taken 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 expansion 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 expansion liner hanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103628834A true CN103628834A (en) | 2014-03-12 |
| CN103628834B 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 expansion liner hanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103628834B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131103A (en) * | 2017-11-15 | 2018-06-08 | 中国石油天然气股份有限公司 | Butt joint tool and lifting expansion 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 |
| CN111133169A (en) * | 2017-09-26 | 2020-05-08 | 通用电气(Ge)贝克休斯有限责任公司 | Internal and external downhole architecture with downlink activation |
| CN111140208A (en) * | 2020-01-25 | 2020-05-12 | 大庆长垣能源科技有限公司 | Metal sealing type tail pipe 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 |
| CN111577180A (en) * | 2019-02-18 | 2020-08-25 | 中国石油天然气集团有限公司 | Disposable type tail pipe hanger |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090107686A1 (en) * | 2007-10-24 | 2009-04-30 | Watson Brock W | Setting tool for expandable liner hanger and associated methods |
| 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 | Compound pressure-building rotational flow tail pipe 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 | Expansion pipe type tail pipe 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 liner hanger |
-
2012
- 2012-08-23 CN CN201210301905.3A patent/CN103628834B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090107686A1 (en) * | 2007-10-24 | 2009-04-30 | Watson Brock W | Setting tool for expandable liner hanger and associated methods |
| CN201280909Y (en) * | 2008-05-09 | 2009-07-29 | 中国石油集团川庆钻探工程有限公司 | Compound pressure-building rotational flow tail pipe 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 | Expansion pipe type tail pipe 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 liner hanger |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111133169A (en) * | 2017-09-26 | 2020-05-08 | 通用电气(Ge)贝克休斯有限责任公司 | Internal and external downhole architecture with downlink activation |
| CN108131103A (en) * | 2017-11-15 | 2018-06-08 | 中国石油天然气股份有限公司 | Butt joint tool and lifting expansion method |
| CN108131103B (en) * | 2017-11-15 | 2019-11-08 | 中国石油天然气股份有限公司 | Butt joint tool applied to lifting expansion method |
| CN111577180A (en) * | 2019-02-18 | 2020-08-25 | 中国石油天然气集团有限公司 | Disposable type tail pipe hanger |
| 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 |
| CN111140208A (en) * | 2020-01-25 | 2020-05-12 | 大庆长垣能源科技有限公司 | Metal sealing type tail pipe 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103628834B (en) | 2017-06-06 |
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