CN102108844A - Packer fixing ring and oil/water self-expandable packer with same - Google Patents
Packer fixing ring and oil/water self-expandable packer with same Download PDFInfo
- Publication number
- CN102108844A CN102108844A CN2009102431129A CN200910243112A CN102108844A CN 102108844 A CN102108844 A CN 102108844A CN 2009102431129 A CN2009102431129 A CN 2009102431129A CN 200910243112 A CN200910243112 A CN 200910243112A CN 102108844 A CN102108844 A CN 102108844A
- Authority
- CN
- China
- Prior art keywords
- packer
- retainer ring
- oil
- main part
- self
- 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
Images
Abstract
The invention relates to a packer fixing ring and a self-expandable packer with the same. The fixing ring is used for fixing the self-expandable packer sleeved on a base tube, and the packer is self-expandable in oil or water so as to seal a space to be sealed; the packer fixing ring comprises a main body part and a fixing part, wherein the main body part is used for being sleeved on the base tube; the fixing part is at least arranged at one end of the main body part and is used for being sleeved at the end part of the packer so as to fix the end part; and the length of the fixing part along an axial direction is equal to the length of the end part of the packer, that is to say, the length of the fixing part along the axial direction is larger than or equal to 1/2 of the maximum radial dimension between the outer wall of the packer and the space to be sealed. The packer comprises a main body part, a tapered section arranged at one end of the main body part, and a linear section arranged at a free end of the tapered section. By means of the packer fixing ring and the self-expandable packer with the same, provided by the invention, liquid leakage caused by a hollow phenomenon between the packer and the base tube and the influence of the packer fixing ring on the radial expansion of the packer when the packer fixing ring is used for fixing the end part of the packer in the prior art are eliminated.
Description
Technical field
The present invention relates to a kind of packer retainer ring and have this retainer ring chance oil, meet water self-expanding packer.
Background technology
When crude oil extraction, well can be by interval, crack or the slit oil impregnate or the infiltration of different permeabilities; At this situation in oil impregnate different intervals, that do not expect or infiltration, it is a kind of better way method of finishing oil well that the sand sieve pipe of setting up defences on the well upper berth is usually closed reservoir.But a bite oil well can pass the rock stratum usually and change industry characteristics, although in fact sand control screen forms sealing in inside, flows into reservoir but still have through the outside well liquid of not expecting.Therefore, need to control or close the reservoir that those do not produce required well liquid.This just needs the outside annular region of sealing.
Can adopt chance oil, chance water self-expansion type packer to realize above-mentioned sealing now.The expansion flexible member of meeting oil, chance water self-expansion type packer can produce the induction volume expansion in specific liquid, if these expansion flexible members had just touched the borehole wall of outer wall such as open hole or the inwall of sleeve pipe before volume expansion reaches maximum multiplying power, then produce contact pressure.When this contact pressure be enough to well in the pressure reduction that had during fluid seepage when contending with, promptly formed actual sealing effectiveness, thus airtight annular space around the packer.
Disclose a kind of Wel packing in Chinese patent 01815341.0, this packer comprises an inflatable element of mainly being made by elastomeric material, and this expansion element mainly expands by the hydrocarbon that the absorption rock stratum produces.This expansion element directly is enclosed within on the oil pipe, though it meets expand annular space between salable borehole wall and the oil pipe of oil, and when it expands, in case and produce the gap between the oil pipe, then liquid can be from this gap seepage, thus the sealing of losing.
Produce the seepage that the gap causes liquid when preventing packer inflation and between the oil pipe, Chinese patent application 200680015217.3 discloses a kind of annular packer device, this packer is provided with seal 14 between sleeve 2 that expanding material 4 is centered on and oil pipe 8, sealing part 14 can prevent that liquid from flowing between sleeve 2 and oil pipe 8.But in fact, seal 14 can prevent liquid flowing between oil pipe and sleeve, but in the volume expansion of expanding material 4 to a certain degree the time, expanding material 4 still can and sleeve 2 between produce the gap and cause liquid crack seepage during this time.
For preventing the generation of above-mentioned situation, with reference to Fig. 1, can consider usually to establish anti-extrusion rings at the two ends of packer, yet after expanding material expand into to a certain degree, then expanding material and anti-extrusion between produce the slit, thereby the parent tube seepage that causes the liquid runs down expanding material to be centered on.
In addition; usually also consider to block respectively and establish an O shape endless loop at the expanding material two ends; the expanding material external diameter of its internal diameter and packer is identical; though this structure has overcome liquid flowing between expanding material and parent tube; no matter but the width of this O shape endless loop how, expanding material is difficult to expand.
Chinese patent application 200680016020.1 discloses a kind of packer-anchoring device, and this fastening devices is between ring seal packer 1 and body 2, and wherein at least one end of ring seal packer 1 is provided with expandable end collar 14.This expandable end collar 14 is as packer-anchoring device, the cross section of this end ring 14 is the shape of horn, first shank of described horn forms to projecting inward plate-like portion 16, second shank of described horn forms sleeve part 18, described sleeve part 18 with around mode extend in the end of described ring seal packer 1.Though this end ring can prevent liquid and flow that because packer 1 can fully freely not expanded by the part of buckle, then can't be expanded by the part of buckle, then final result is that expanding material is torn fragmentation between ring seal packer 1 and body 2.
Summary of the invention
In order to overcome the fluid seepage that hollow phenomenon caused between packer of the prior art and the parent tube, and the packer retainer ring fixedly during the packer end to the influence of the expanded radially of packer; The object of the present invention is to provide a kind of packer retainer ring, it is used for fixing chance oil, the chance water self-expansion type packer that is set on the parent tube, and this packer is used at chance oil, enclosure space is treated in the self-expanding sealing when meeting water.
According to above-mentioned conception, packer retainer ring of the present invention is used for fixing the chance oil, the chance water self-expansion type packer that are set on the parent tube, and this packer is used at chance oil, enclosure space is treated in the self-expanding sealing when meeting water; Wherein this packer retainer ring comprises: main part, and it is used to be set in parent tube; Fixed part, it is arranged at an end of this main part at least, and is used to be set in the end of this packer to fix this end; This fixed part length vertically equals the length of the end of this packer, promptly more than or equal to the outer wall of this packer and treat between the enclosure space maximum radial dimension 1/2.
According to further conception of the present invention, the outside wall surface of this fixed part is the inclined-plane towards the parent tube direction vertically, is 5-25 ° of angle between the outside wall surface of this fixed part outside wall surface and main part.
According to further conception of the present invention, the free-ended interior outer end wall place of this fixed part is provided with the fillet of R4-R6 respectively.
According to further conception of the present invention, the other end of this main part also is provided with vertically towards the inclined-plane of parent tube, is 10-45 ° of angle between the outside wall surface of this inclined-plane and main part.
According to further conception of the present invention, the free end outer wall place of the outside wall surface of this main part also is provided with the fillet of R2-R4.
According to further conception of the present invention, the two ends of this main part are equipped with fixed part.
According to further conception of the present invention, the outer wall maximum radial dimension of this main part equals the maximum radial dimension of the outer wall of this packer.
A further object of the present invention is to provide a kind of chance oil, chance water self-expansion type packer of tool retainer ring, the present invention can avoid the fluid seepage that hollow phenomenon caused between packer and the parent tube, and the packer retainer ring fixedly during the packer end to the influence of the expanded radially of packer.
According to a further object of the present invention, the invention provides a kind of chance oil, chance water self-expansion type packer with retainer ring, this packer is used at chance oil, enclosure space is treated in the self-expanding sealing when meeting water; Wherein the end of this packer is provided with the packer retainer ring.
According to further conception of the present invention, this packer comprises body, is provided with conical section at body one end, is provided with straightway at the free end of conical section, and this straightway is the end of packer; The length of this straightway more than or equal to the outer wall of this packer and treat between the enclosure space maximum radial dimension 1/2.
According to further conception of the present invention, the angle between the outside wall surface of the conical section of this packer and the outside wall surface of straightway is the obtuse angle greater than 90 °.
The present invention has following advantage compared to existing technology:
1, retainer ring of the present invention along the axial length more than or equal to the outer wall of this packer and treat between the enclosure space maximum radial dimension 1/2, no matter thereby packer expand into much multiplying powers, hollow phenomenon can not appear, can between parent tube and packer the space not appear promptly, and leak, strengthened the sealing of packer.
2, retainer ring of the present invention can be located at the two ends of packer, thereby the axial expansion of packer is restricted, but the structure of retainer ring of the present invention can make that its expanded radially is unaffected, and the stress that produces that expands can obtain certain dispersion; Thereby the present invention can make the swelliong power of packer concentrate on radially performance, and its expansion time is long, and the expanded radially multiplying power is big.
3, the outside wall surface of the outside wall surface of the fixed part of packer of the present invention and main part all is the inclined-plane towards the direction of parent tube vertically, and this inclined-plane makes retainer ring and packer integral body all not have the step of sudden change, thereby has avoided scraping with the extension of well or tube wall when mounted.
4, the free-ended interior outer end wall place of the fixed part of retainer ring of the present invention is equipped with fillet, can avoid hurting or tearing when packer is met oil, water-swellable packer.
5, the maximum radial dimension of the outer wall of the main part of retainer ring of the present invention equals the maximum radial dimension of the outer wall of packer, thereby when mounted, can prevent scratch; And when laying packing, level can play certain anti-pressure support effect.
6, the length of the straightway of packer of the present invention equal retainer ring fixed part length and more than or equal to the outer wall of this packer and treat between the enclosure space maximum radial dimension 1/2; No matter thereby packer expand into much multiplying powers, its straightway all some length is retained in the retainer ring and can cause occurring between packer and the parent tube hollow phenomenon, promptly can between parent tube and packer, the space not occur, and leak, strengthen the sealing of packer.
7, the end of packer of the present invention is a straightway, and has only be fixed ring institute of this straightway fix, thereby has only the axial expansion of packer to be restricted, and its expanded radially is also unaffected, and the stress of expansion generation can obtain certain dispersion; Thereby the present invention can make the swelliong power of packer concentrate on radially performance, and its expansion time is long, and the expanded radially multiplying power is big.
8, also be provided with conical section on the packer of the present invention, be obtuse angle between this conical section and the straightway, thereby can avoid when packer is met oil, water-swellable, being hurt or tearing greater than 90 °.
Description of drawings
Fig. 1 is packer-anchoring device of the prior art and packer view in use
Fig. 2 is the structural representation of first embodiment of packer retainer ring of the present invention
Fig. 3 is the structural representation of second embodiment of packer retainer ring of the present invention
Fig. 4 is the structural representation of packer of the present invention
Fig. 5 is the first assembling embodiment schematic diagram of packer retainer ring among the present invention and packer
Fig. 6 is the second assembling embodiment schematic diagram of packer retainer ring among the present invention and packer
Wherein description of reference numerals is as follows:
1 packer retainer ring
11 main parts, 111 main part outside wall surface, 112 main part inclined-planes
12 fixed parts, 121 fixed part outside wall surface, 122 fixed part free ends
123 inner end wall, 124 outer end wall
2 packers
21 bodies, 22 conical sections, 23 straightways, 24 annular grooves
3 parent tubes
The specific embodiment
In order further to understand feature of the present invention and technology contents, see also following about detailed description of the present invention and accompanying drawing, yet accompanying drawing only for reference with the explanation usefulness, be not to be used for the present invention is limited.
See also Fig. 2, be the first exemplary construction schematic diagram of packer retainer ring 1 of the present invention.This packer retainer ring is used for fixing chance oil, the chance water self-expansion type packer that is set on the parent tube, and this packer is used at chance oil, enclosure space is treated in the self-expanding sealing when meeting water; Wherein this packer retainer ring 1 comprises: main part 11, and it is used to be set in parent tube; End at this main part 11 is provided with fixed part 12; This fixed part 12 is used to be set in the end of this packer to fix this end.
See also Fig. 2 again, this fixed part 12 length vertically equals the length of the end of this packer, promptly more than or equal to the outer wall of this packer and treat between the enclosure space maximum radial dimension 1/2; And the outside wall surface 121 of this fixed part 12 is the inclined-plane towards the parent tube direction vertically, is 10 ° of angles between the outside wall surface 111 of this fixed part outside wall surface 121 and main part 11.Other is provided with the fillet of R4-R6 respectively at interior outer end wall 123,124 places of the free end 122 of this fixed part 12, be preferably the fillet of R5.
See also Fig. 2 again, the other end of this main part 11 also is provided with vertically towards the inclined-plane 112 of parent tube 3, is 30 ° of angles between the outside wall surface 111 of this inclined-plane 112 and main part 11.The free end outer wall place on this inclined-plane 112 also is provided with the fillet of R2-R4, is preferably the fillet of R3.
The outer wall maximum radial dimension of this main part 11 equals the maximum radial dimension of the outer wall of this packer 2.
See also Fig. 3, be the second exemplary construction schematic diagram of packer retainer ring 1 of the present invention.The difference of this packer retainer ring 1 and first embodiment is: the other end at the main part 11 of retainer ring 1 also is provided with another fixed part 12, and fixed part 12 structures at these main part 11 two ends are all identical.
See also Fig. 4, be the structural representation of packer of the present invention.Wherein, this packer 2 is used at chance oil, enclosure space is treated in the self-expanding sealing when meeting water; This packer 2 comprises body 21, is provided with conical section 22 at body one end, is provided with straightway 23 at the free end of conical section 22, and this straightway 23 is the end of packer, to be arranged with retainer ring 1 thereon; The length of this straightway 23 is identical with the length of the fixed part 12 of this retainer ring 1, and more than or equal to the outer wall of this packer 1 and treat between the enclosure space maximum radial dimension 1/2.Angle between the outside wall surface of the outside wall surface of the conical section 22 of this packer 2 and straightway 23 is 130 ° angle in addition.
See also Fig. 5, be the first assembling embodiment schematic diagram of the packer retainer ring among the present invention 1 with packer 2.In Fig. 5, packer 2 comprises the oily expanded rubber packer of a plurality of chances or a plurality of hydro-expansive rubber packer, and packer is set in or vulcanizes on parent tube 3; Be provided with the packer retainer ring of the first embodiment of the present invention at the two ends of packer 2, main part 11 1 ends of this retainer ring 1 are provided with fixed part 12.The main part 11 of this retainer ring 1 is set on the parent tube 3, and its fixed part 12 then is set on the straightway 23 of packer 2.Also be provided with a plurality of annular grooves 24 in addition on this packer 2, it is long-pending with the contact surface of liquid on unit length that this annular groove 24 can increase packer, accelerates packer inflation speed, improved expansion multiplying power, makes it reach better plugging effect.
See also Fig. 6, be the second assembling embodiment schematic diagram of packer retainer ring among the present invention and packer.In Fig. 6, packer 2 comprises the oily expanded rubber packer of a plurality of chances and a plurality of hydro-expansive rubber packer, and the oily swell packers of a plurality of chance and a plurality of water-swellable packer are set in with being spaced or vulcanize on parent tube 3; Be provided with the packer retainer ring of the first embodiment of the present invention at the two ends of packer 2, main part 11 1 ends of this retainer ring 1 are provided with fixed part 12.The main part 11 of this retainer ring 1 is set on the parent tube 3, and its fixed part 12 then is set on the straightway 23 of packer 2; Meeting second embodiment that then is provided with packer retainer ring of the present invention between oily swell packers and the water-swellable packer.This retainer ring 1 is to be equipped with fixed part 12 at the two ends of its main part 11; And this main part 11 also is set on the parent tube 3, and its two fixed part 12 then is set in respectively on the straightway 23 of the straightway 23 of meeting oily expanded rubber packer and hydro-expansive rubber packer.
Effect comparison result of the present invention is as follows:
1, use the hydro-expansive rubber packer, external diameter 85mm, high 105mm, wall thickness 24mm soak in room temperature, pure water, do not add any fastening devices, allow its free wxpansion, and external diameter expand into 177.5mm in the 12nd day; Expand into 177.6mm on the 20th day.
2, use and above-mentioned the 1st identical hydro-expansive rubber packer, other test condition is constant, buckle an O shape endless loop respectively at the packer two ends, the external diameter of its internal diameter and packer is identical and the packer two ends are blocked, and the intermediate portion only expand into 97mm in the 12nd day.
3, test condition is made two O shape endless loops with above-mentioned the 1st, and its external diameter is less than the external diameter of the packer internal diameter greater than packer, be about to the two ends that O shape endless loop is embedded in packer, the 10th day packer cracking then, external diameter expands to 118.5mm, and is final broken fully.
4, test condition is with above-mentioned the 1st, structure grinding of the present invention is pressed at the packer two ends, the thickness that makes its straightway 23 is 16mm, length 10mm is provided with the packer retainer ring by of the present invention first mode of assembling embodiment at the two ends of packer, and external diameter was expanded to 174.3mm in the 12nd day, packer is cydariform and expands, continue in the middle of it to expand, and closely fasten between its inner radius and the parent tube 3, seamless.
5, test condition is with above-mentioned the 1st, structure grinding of the present invention is pressed at the packer two ends, the thickness that makes its straightway 23 is 10mm, length 10mm is provided with 1, the 12 day external diameter of packer retainer ring by of the present invention first mode of assembling embodiment and is expanded to 175.5mm at the two ends of packer, packer is cydariform and expands, continue in the middle of it to expand, and closely fasten between its inner radius and the parent tube 3, seamless.The maximum outside diameter that cydariform expands in the time of the 20th day reaches 179.6mm.
The above only is a preferable possible embodiments of the present invention, and is non-so promptly limit to claim of the present invention, so the equivalent structure that uses manual of the present invention and accompanying drawing content to do such as changes, all in like manner all is contained in the scope of the present invention, closes and gives Chen Ming.
Claims (10)
1. packer retainer ring, it is used for fixing the chance oil that is set on the parent tube, meets water self-expansion type packer, this packer be used for meet oil, enclosure space is treated in the self-expanding sealing when meeting water; It is characterized in that this packer retainer ring (1) comprising:
Main part (11), it is used to be set in parent tube;
Fixed part (12), it is arranged at an end of this main part (11) at least, and is used to be set in the end of this packer to fix this end; This fixed part (12) length vertically equals the length of the end of this packer, promptly more than or equal to the outer wall of this packer and treat between the enclosure space maximum radial dimension 1/2.
2. packer retainer ring as claimed in claim 1, it is characterized in that, the outside wall surface (121) of this fixed part (12) is the inclined-plane towards the parent tube direction vertically, is 5-25 ° of angle between the outside wall surface (111) of this fixed part outside wall surface (121) and main part (11).
3. packer retainer ring as claimed in claim 1 is characterized in that, the fillet that R4-R6 is located to be provided with respectively in the interior outer end wall (123) of the free end (122) of this fixed part (12), (124).
4. packer retainer ring as claimed in claim 1 is characterized in that, the other end of this main part (11) also is provided with vertically towards the inclined-plane (112) of parent tube, is 10-45 ° of angle between the outside wall surface (111) of this inclined-plane (121) and main part (11).
5. packer retainer ring as claimed in claim 4 is characterized in that, the free end outer wall place of the outside wall surface (111) of this main part (11) also is provided with the fillet of R2-R4.
6. packer retainer ring as claimed in claim 1 is characterized in that, the two ends of this main part (11) are equipped with fixed part (12).
Chance oil with retainer ring, meet water self-expansion type packer, this packer be used for meet oil, enclosure space is treated in the self-expanding sealing when meeting water; The end that it is characterized in that this packer (2) is provided with the described packer retainer ring 1 of claim 1-6.
8. chance oil, the chance water self-expansion type packer with retainer ring as claimed in claim 7, it is characterized in that this packer (2) comprises body (21), be provided with conical section (22) at body one end, free end at conical section (22) is provided with straightway (23), and this straightway (23) is the end of packer; The length of this straightway (23) more than or equal to the outer wall of this packer and treat between the enclosure space maximum radial dimension 1/2.
9. chance oil, the chance water self-expansion type packer with retainer ring as claimed in claim 8 is characterized in that also being provided with annular groove (24) on the body (21) of packer (2).
10. the chance oil with retainer ring as claimed in claim 8, meet water self-expansion type packer, it is characterized in that angle between the outside wall surface of the outside wall surface of conical section (22) of this packer (2) and straightway (23) is the obtuse angle greater than 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910243112.9A CN102108844B (en) | 2009-12-28 | 2009-12-28 | Packer fixing ring and oil/water self-expandable packer with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910243112.9A CN102108844B (en) | 2009-12-28 | 2009-12-28 | Packer fixing ring and oil/water self-expandable packer with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102108844A true CN102108844A (en) | 2011-06-29 |
| CN102108844B CN102108844B (en) | 2015-04-01 |
Family
ID=44173115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910243112.9A Active CN102108844B (en) | 2009-12-28 | 2009-12-28 | Packer fixing ring and oil/water self-expandable packer with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102108844B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225489B (en) * | 2012-01-31 | 2015-11-18 | 中国石油化工股份有限公司 | A kind of Self-expandable packer |
| CN107630670A (en) * | 2017-09-30 | 2018-01-26 | 锦州清华机械有限公司 | Automatic shut-in well integrated window-opening side-drilling tool |
| CN114320214A (en) * | 2021-12-29 | 2022-04-12 | 东营市兆鑫工贸有限责任公司 | Packer for producing and injecting steam |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1452686A (en) * | 2000-09-08 | 2003-10-29 | 鲁内·弗里尔 | Wel packing |
| CN201258720Y (en) * | 2008-10-02 | 2009-06-17 | 刘景斌 | Self-expansion bonding packer |
| US20090159265A1 (en) * | 2005-05-09 | 2009-06-25 | Rune Freyer | Packer-anchoring device |
| US20090277648A1 (en) * | 2006-11-21 | 2009-11-12 | Swelltec Limited | Downhole apparatus with a swellable support structure |
| CN201588575U (en) * | 2009-12-28 | 2010-09-22 | 思达斯易能源技术(集团)有限公司 | Packer fixing ring and self-expansion packer when encountering oil and water with same |
-
2009
- 2009-12-28 CN CN200910243112.9A patent/CN102108844B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1452686A (en) * | 2000-09-08 | 2003-10-29 | 鲁内·弗里尔 | Wel packing |
| US20090159265A1 (en) * | 2005-05-09 | 2009-06-25 | Rune Freyer | Packer-anchoring device |
| US20090277648A1 (en) * | 2006-11-21 | 2009-11-12 | Swelltec Limited | Downhole apparatus with a swellable support structure |
| CN201258720Y (en) * | 2008-10-02 | 2009-06-17 | 刘景斌 | Self-expansion bonding packer |
| CN201588575U (en) * | 2009-12-28 | 2010-09-22 | 思达斯易能源技术(集团)有限公司 | Packer fixing ring and self-expansion packer when encountering oil and water with same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225489B (en) * | 2012-01-31 | 2015-11-18 | 中国石油化工股份有限公司 | A kind of Self-expandable packer |
| CN107630670A (en) * | 2017-09-30 | 2018-01-26 | 锦州清华机械有限公司 | Automatic shut-in well integrated window-opening side-drilling tool |
| CN114320214A (en) * | 2021-12-29 | 2022-04-12 | 东营市兆鑫工贸有限责任公司 | Packer for producing and injecting steam |
| CN114320214B (en) * | 2021-12-29 | 2022-06-07 | 东营市兆鑫工贸有限责任公司 | Packer for producing and injecting steam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102108844B (en) | 2015-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2001280267B2 (en) | Well packing | |
| US6457533B1 (en) | Downhole tubing | |
| CN101080548B (en) | A method and a device for sealing a void incompletely filled with a cast material | |
| RU2697089C2 (en) | Downhole expandable metal pipe | |
| BR112013032433B1 (en) | annular barrier to be expanded in an annular space, well system below, comprising a tubular well structure and at least one annular barrier, and seal maintenance method | |
| US20150034316A1 (en) | Annular barrier having expansion tubes | |
| EP3039229B1 (en) | Tubular element with dynamic sealing and method for applying same against the wall of a wellbore | |
| WO2004027201A3 (en) | Annular isolators for expandable tubulars in wellbores | |
| CN101460699A (en) | A method and apparatus for patching a well by hydroforming a tubular metal patch, and a patch for this purpose | |
| NO346127B1 (en) | Packing element back-up system incorporating iris mechanism | |
| CN101680282A (en) | Cladding method and expansion tool | |
| US3044553A (en) | Well packer | |
| AU2017337283B2 (en) | System, method, and sleeve, for cladding an underground wellbore passage | |
| US20030075342A1 (en) | Packer, setting tool for a packer and method for setting a packer | |
| WO2009076334A4 (en) | Zonal isolation of telescoping perforation appartus with memory based material | |
| CN111963098A (en) | Compression packer | |
| CN103225489B (en) | A kind of Self-expandable packer | |
| CN102108844A (en) | Packer fixing ring and oil/water self-expandable packer with same | |
| RU2005119998A (en) | METHOD FOR INSTALLING A TUBE UNIT IN A WELL | |
| CN201588575U (en) | Packer fixing ring and self-expansion packer when encountering oil and water with same | |
| US20100163254A1 (en) | Device For Sealing Off A Well And A Pipe And A Fitting Method | |
| CN104563953A (en) | Double-layer steel pipe expansion type pipe external casing packer | |
| RU153332U1 (en) | SEALING PACKER ASSEMBLY | |
| CN109138940A (en) | Completion tubular column | |
| US9945205B2 (en) | Plugging device |
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 |