CN2457331Y - Hanging back-off packer - Google Patents
Hanging back-off packer Download PDFInfo
- Publication number
- CN2457331Y CN2457331Y CN 00215982 CN00215982U CN2457331Y CN 2457331 Y CN2457331 Y CN 2457331Y CN 00215982 CN00215982 CN 00215982 CN 00215982 U CN00215982 U CN 00215982U CN 2457331 Y CN2457331 Y CN 2457331Y
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- CN
- China
- Prior art keywords
- central tube
- packer
- ring
- seat
- bushing 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.)
- Expired - Fee Related
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- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The utility model discloses a hanging back-off packer, which comprises a hydraulic cylinder device, a sealing device, a locking device, a hanging device and a back-off device, and is also provided with an anti-midway seat sealing device, a post-treatment safety device and a pressure division device. The utility model solves the problems that the packer is easy to occur the midway seat sealing in the process of downholing, the back-off operation is not occurred after the decompression, the packer can not bear the bidirectional pressure and the post-treatment is difficult, etc. The utility model is used mainly for the anti-sand operation process of the oil, the gas and the water in oil extraction, and can also be used for special operation processes, such as other water blocking operations of an oil field, etc.
Description
The utility model relates to packer, particularly a kind of suspension back-off packer.
At present, the structure of on-the-spot this type packer that uses generally comprises fluid cylinder device, packing rubber sleeve, slips suspension arrangement, locking device, releasing device reconciliation seal apparatus, and these device aggregate erections are integral.Its objective is engineer operations such as the sand control that carries out oil gas water well, water blockoff.Yet it exists following deficiency and shortcoming: 1, in the process of going into the well, because the friction and the collision of instrument and casing wall usually cause seat envelope midway, cause the operation failure.In inclined shaft used, this kind phenomenon was more outstanding especially; 2, structurally, pressure release and releasing device are unrelated, and the situation of the failure of giving up also takes place repeatedly; 3, Fu Jia safety joint is also often unsafe, and tubing string also has generation from the disconnected phenomenon of taking off of safety joint; 4, it is relatively poor etc. to bear the ability of bidirection press.
The utility model purpose provides a kind of suspension back-off packer, and it can avoid and overcome the shortcoming and defect part of above-mentioned prior art effectively, and can bear bidirectional pressure difference well, prevents seat envelope midway.Give up, pressure release one each other, judge clearly, play lower tubular column, work progress is all easy to operate, safe and reliable, convenient post-treatment.
The purpose of this utility model reaches like this:
The suspension type back-off packer comprises fluid cylinder device, sealing device, locking device, suspension arrangement and releasing device, has also designed the anti-seal apparatus of seat midway, post processing safety device and bleeder mechanism, and it is interconnected becomes integral body.
The anti-seal apparatus of seat midway comprises the anti-envelope of seat midway bundle pawl, piston, shear pin, bushing pipe, central tube, upper cone, slips tube, slips, spring, lower cone and adjusting nut.It interconnects, and is installed in the top connection and central tube that is connected with suspended tubes.
The post processing safety device comprises lower cone, hangs pin, separates seal ring, deblocking pin, lower contact and the bundle pawl of giving up, be installed on the central tube by separating seal ring reconciliation offset nail, bundle pawl one end of giving up is connected with suspended tubes, the other end is for hanging the claw type structure, its head is a screw thread, screw thread links to each other with the lower contact internal thread, and inner surface is supported by the support ring on the ball seat.
Bleeder mechanism comprises potential dividing ring, anti-sliding packing element and packing element pressure-bearing cover, is installed on the bushing pipe, and packing element pressure-bearing cover is connected with upper cone.
The purpose of this utility model can also reach by following measure:
The anti-envelope of seat midway bundle pawl is a tubulose claw type structure, is installed on the central tube.The one end links to each other with bushing pipe, and the other end is a claw type, and there is boss the end, is stuck in the groove of central tube.
Bushing pipe one end inside and outside all has step, and the pressure-bearing cover hangs on its outer step, and retaining ring is an open elastic ring, in have the spiral gingival cyst of mucous gland in the newborn to buckle, be installed in the bushing pipe on the step, buckle corresponding the cooperation with the spiral gingival cyst of mucous gland in the newborn on the central tube.Upper cone is the bullet structure with inside and outside step, and step seat is hung the slips tube on its outer step in it on the outer step of central tube.Lower cone also is the bullet structure with inside and outside step, is installed on the central tube, on the step adjustable ring is arranged in it, is the adjusting nut on the outer step.Potential dividing ring is a laminated structure, and several pieces are stacked together, and is installed on the bushing pipe, leans on mutually with the anti-sliding packing element, and the branch indent is arranged on one of them side.Be useful on vertical mortise of dividing potential drop on the external diameter surface of anti-sliding packing element.The screw thread of lower contact inner chamber is connected under the support of support ring with the screw thread of the bundle pawl of giving up, and the deblocking pin was twisted lower contact and is stuck in the groove of separating seal ring, and the suspension pin was twisted lower cone and is stuck in the groove of lower contact.
Suspension back-off packer of the present utility model is connected on the tubing string, in use behind the precalculated position, down-hole, the pitching sealed ball seat is suppressed from tubing string then, and fluid cylinder produces thrust under certain pressure, cut off pin, push the anti-envelope of seat midway self-locking device open, compression packing rubber sleeve, packing oil jacket annular space, promote to go up lower cone simultaneously, strut slips, be suspended on the casing wall, the retaining ring automatic locking.Following pressuring oil pipe confirms that seat is honored as a queen, and increases pressure from oil pipe, destroys ball seat and support ring, the bundle pawl of giving up is lost support the back to shrink automatically, thereby realizing giving up and pressure release simultaneously, and this moment, packer just was stuck on the borehole wall securely, and packing oil jacket annular space.Lost efficacy need trip out packer the time as sand control after several years, on carry central tube, cut off deblocking pin deblocking, the tubing string that proposes packer and carry.Blocked as the tubing string below the packer, can be carried in the reinforcing, cut off the suspension pin, just packer is tripped out safely.
The drawing of accompanying drawing is described as follows:
Accompanying drawing is that example of the present utility model partly cuts open figure.
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in drawings, on top connection 1 wall liquid opening 3 is arranged, hydraulic coupling is delivered on the piston 4 by this hole.Screw thread and step are arranged on the outer wall of top connection 1, the internal thread of fluid cylinder cover 2 and in step match with it, piston 4 is installed in top connection 1 and fluid cylinder and overlaps in the ring-like chamber between 2.The inwall of piston 4 one ends has boss, and outer wall has annular mortise, and shear pin 6 was twisted fluid cylinder cover 2 and is stuck in this cannelure.Suspended tubes 5 one ends are connected on the internal thread of top connection 1 one ends, connect the bundle pawl 19 of giving up on the other end external screw thread, and inwall is being fixed ball seat 31 by the shear pin 24 of giving up, and there is side opening 22 at its outer wall undergauge place.Ball 20 is arranged on the inner conical surface of ball seat 31, connecting support ring 32 on its lower end external screw thread, the supported ring 32 of bundle pawl of the bundle pawl 19 of giving up is supporting.Giving up to restraint on the pawl pawl head has the ladder shell line, and it is connected with the internal thread of lower contact 30 1 ends.Central tube 7 is connected with the seal ring 28 of separating that is connected by deblocking pin 29 in the lower contact 30, and the central tube external surface has boss, annular groove and spiral gingival cyst of mucous gland in the newborn to buckle.The anti-envelope of seat midway bundle pawl 8 is connected with bushing pipe 14 on being enclosed within central tube 7, and head of its bundle pawl is the boss shape, and it simultaneously is stuck in the annular groove of central tube 7, is simultaneously clamped by the inner convex platform of piston 4.Bushing pipe 14 is enclosed within on the central tube 7, and step is all arranged inside and outside the one end, and pressure-bearing cover 12 hangs on its outer step, retaining ring 13 be enclosed within on the central tube 7 and seat on the interior step of bushing pipe 14, retaining ring 13 is open elastic rings, in have the spiral gingival cyst of mucous gland in the newborn to buckle, buckle corresponding the cooperation with the spiral gingival cyst of mucous gland in the newborn on the central tube.Upper cone 15 is a pyramidal structure, and step is all arranged inside and outside it, and its end is connected with pressure-bearing cover 12, and the step seat is hung slips tube 16 on its outer step in the cone of the other end on the outer step of central tube 7.Lower cone 26 is the bullet structure, and step is all arranged inside and outside it, and it is installed on the central tube 7, on the interior step keyway is arranged, and the nut 25 of adjusting is arranged on the outer step, regulates nut 25 and is connected with slips tube 16.Hang in the screwed hole that pin 27 is spun on lower cone and be stuck in the cannelure of lower contact 30, deblocking pin 29 is spun in the screwed hole of lower cone 30 and is stuck in the cannelure of separating seal ring 28.Packing rubber sleeve 9, potential dividing ring 10 and anti-sliding packing element 11 are enclosed within on the bushing pipe 14, and seat is between anti-envelope bundle pawl 8 of seat midway and bearing ring 12.Potential dividing ring 10 is a laminated structure, and two be close together (being expressed as two among the figure) wherein has colored groove on the side plane of a slice, leans on mutually with the anti-sliding packing element, and the external surface of anti-sliding packing element 11 is useful on the cannelure of dividing potential drop.Slips 17 and spring 18 are contained between the upper cone 15 and lower cone 26 on the central tube 7, are fixed in the window of slip sleeve 16, and slips is pressed on the central tube by spring.
The utility model has the following advantages compared with prior art:
1, owing to designed anti-setting device midway, makes packer soever collision in the process of going into the well, can not take place Setting phenomenon midway;
2, the each other one of pressure release of giving up, but the problem that can not give up after the pressure release has been avoided in just pressure release when only giving up fully;
3, designed the post processing safety device, the instrument safety of going into the well, convenient post-treatment;
4, design potential dividing ring and anti-sliding device, effectively prevented sliding problem on the packer, improved the two of packer To ability to bear.
Claims (9)
1, a kind of suspension back-off packer, comprise fluid cylinder device, sealing device, locking device, device far apart and releasing device, it is characterized in that also having designed the anti-seal apparatus of seat midway that comprises the anti-envelope of seat midway bundle pawl (8), piston (4), shear pin (6), bushing pipe (14), central tube (7), upper cone (15), slips tube (16), slips (17), spring (18), lower cone (26) and regulate nut (25), be installed in the top connection (1) and central tube (7) that is connected with suspended tubes (5); One comprises lower cone (26), hangs pin (27), separates seal ring (28), deblocking pin (29), lower contact (30) and the post processing safety device of the bundle pawl (19) of giving up, and seal ring (28) is conciliate offset nail (29) and central tube (7) links together by separating; A bleeder mechanism that comprises potential dividing ring (10), anti-sliding packing element (11) and packing element pressure-bearing cover (12) is installed in bushing pipe (14) and upward is connected with upper cone (15).
2, suspension back-off packer according to claim 1 is characterized in that anti-seat envelope bundle pawl (8) midway is installed on the central tube (7) for tubulose claw type structure.
3, suspension back-off packer according to claim 2 is characterized in that the anti-envelope of seat midway car pawl (8) one ends link to each other with bushing pipe (14), and the other end is a claw type, and there is boss the end, is stuck in the groove of central tube (7), is pushed down by the inner convex platform of fluid cylinder (4).
4, according to claim 1 or 2 or 3 described suspension back-off packers, it is characterized in that inside and outside bushing pipe (14) one ends step being arranged all, pressure-bearing cover (12) hangs on its outer step, retaining ring (13) is a split ring, inside spin gingival cyst of mucous gland in the newborn button is arranged, the corresponding cooperation of outer gingival cyst of mucous gland in the newborn button on the gingival cyst of mucous gland in the newborn button of retaining ring (13) and the central tube (7) is installed within it on the step.
5, suspension back-off packer according to claim 1 is characterized in that upper cone (15) for having the pyramidal structure of inside and outside step, and step seat is hung slips tube (16) in it on its outer step on the outer step of central tube (7).
6, suspension back-off packer according to claim 1, it is characterized in that lower cone (26) for to have the pyramidal structure of inside and outside step, is installed on the central tube (7), on the step keyway is arranged in it, be stuck on the key 23 on the central tube, be adjusting nut (25) on the outer step.
7, suspension back-off packer according to claim 1 is characterized in that potential dividing ring (10) is a laminated structure, several pieces folded being close together, and wherein one side plane has spline, and they are installed on the bushing pipe (14).
8, according to claim 1 or 7 described suspension back-off packers, the potential dividing ring (10) that it is characterized in that being installed on the bushing pipe (14) leans on mutually with anti-sliding packing element (11), on the anti-sliding packing element periphery vertical minute indent is arranged.
9, suspension back-off packer according to claim 1, the screw thread that it is characterized in that lower contact (30) inner chamber is connected under the support of support ring (32) with the screw thread of the bundle pawl (19) of giving up, deblocking pin (29) was twisted lower contact (30) and was stuck in the groove of separating seal ring (28), and suspension pin (27) was twisted lower cone (26) and is stuck in the groove of lower contact (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00215982 CN2457331Y (en) | 2000-08-22 | 2000-08-22 | Hanging back-off packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00215982 CN2457331Y (en) | 2000-08-22 | 2000-08-22 | Hanging back-off packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2457331Y true CN2457331Y (en) | 2001-10-31 |
Family
ID=33581798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00215982 Expired - Fee Related CN2457331Y (en) | 2000-08-22 | 2000-08-22 | Hanging back-off packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2457331Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116138A (en) * | 2010-12-31 | 2011-07-06 | 中国石油天然气集团公司 | Tapered release type tubing plug |
| CN101382053B (en) * | 2008-10-21 | 2011-12-14 | 张永祥 | Oil well packer |
| CN101382052B (en) * | 2008-10-21 | 2011-12-14 | 张永祥 | Back-off packer |
| CN114482891A (en) * | 2020-10-23 | 2022-05-13 | 中国石油化工股份有限公司 | Friction setting sand prevention pipe column, friction setting packer and method |
-
2000
- 2000-08-22 CN CN 00215982 patent/CN2457331Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101382053B (en) * | 2008-10-21 | 2011-12-14 | 张永祥 | Oil well packer |
| CN101382052B (en) * | 2008-10-21 | 2011-12-14 | 张永祥 | Back-off packer |
| CN102116138A (en) * | 2010-12-31 | 2011-07-06 | 中国石油天然气集团公司 | Tapered release type tubing plug |
| CN102116138B (en) * | 2010-12-31 | 2014-01-01 | 中国石油天然气集团公司 | Tapered release type tubing plug |
| CN114482891A (en) * | 2020-10-23 | 2022-05-13 | 中国石油化工股份有限公司 | Friction setting sand prevention pipe column, friction setting packer and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |