CN202117601U - Synchronous limit anchor for packer - Google Patents
Synchronous limit anchor for packer Download PDFInfo
- Publication number
- CN202117601U CN202117601U CN2011202055778U CN201120205577U CN202117601U CN 202117601 U CN202117601 U CN 202117601U CN 2011202055778 U CN2011202055778 U CN 2011202055778U CN 201120205577 U CN201120205577 U CN 201120205577U CN 202117601 U CN202117601 U CN 202117601U
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- Prior art keywords
- cone
- slips
- wall
- slip
- slip sleeve
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- 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 - Lifetime
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Abstract
The utility model relates to a synchronous limit anchor for a packer. The synchronous limit anchor is used for carrying out underground layered anchoring on the packer or a bridge plug. A cylindrical upper cone and a cylindrical lower cone are sleeved on the outer wall of a center pipe; two slip sleeves are sleeved on the outer wall of the upper cone and the outer wall of the lower cone; both ends of the slip sleeves are provided with ring-shaped bosses which are convex inwards; slip holes are uniformly distributed on the slip sleeves; a rectangular slip is arranged in each group of slip holes; the middle part of the surface of each slip is provided with a groove; an open hooping ring is arranged in each slip groove; both the ends of each slip sleeve are respectively provided with axial rectangular guide holes; a fixed pin is arranged in each guide hole; and the fixed pins are respectively fixed on the outer wall of the upper cone or the lower cone. The synchronous limit anchor for the packer has the effects that under the action of limit of the open hooping rings, a plurality of slips can only be synchronously opened for anchoring and retracted for fastener-unlatching in the radial direction; and after being mounted, the upper cone and the lower cone are hung through steps at the bottoms of cone surfaces and steps inside the end parts of the slip sleeves, and the cones can only move in the slip sleeves and cannot fall off.
Description
Technical field
The utility model relates to petroleum machinery oil recovery technique field, and particularly the anchor mechanism of laminated distributor under well instrument is the synchronous spacing anchor of a kind of packer or bridging plug.
Background technology
Along with continually developing of oil field, complicated owing to reservoir geology, bury reason such as dark, formation temperature height, the laminated distributor under well instrument is had higher requirement.At present, use capping tools packer slip anchor mechanism in the oil-water well water blockoff, it is firm to have a grappling, and tubing string is difficult for the characteristics of sliding.But still have some problems, mainly show the following aspects: 1, upper cone promotes slips and opens when being anchored on the sleeve pipe during packer setting, exists several pieces slips effectively not open simultaneously, and it is unreliable to cause sitting the card grappling; 2, during upper lifting pipe post packer deblocking, slips is reclaimed, have the slips card tubing string that comes off to cause the overhaul phenomenon.
The utility model content
The purpose of the utility model is: provide a kind of packer synchronous spacing anchor, can be in the down-hole anchoring packer or bridging plug, slips opens simultaneously, it is reliable to sit the card grappling; During deblocking, realize opening synchronously the grappling unfreezing.
The technical scheme that the utility model adopts is: the synchronous spacing anchor of packer, mainly form by upper cone, slip sleeve, slips, opening garter spring, central tube, lower cone and fixing pin, and at the two ends of central tube screw thread is arranged; Can be connected on the tubing string; It is characterized in that: on the outer wall of central tube, be with upper cone cylindraceous and lower cone, there is external screw thread described upper cone upper end, and there is taper seat the lower end of upper cone; On the outer wall of upper cone lower end, ring-shaped step is arranged; There is external screw thread described lower cone lower end, and there is taper seat the upper end of lower cone, on the outer wall of lower cone upper end, annular table is arranged; On upper cone outer wall and lower cone outer wall, be with an annular slip sleeve; There is inwardly protruded annular table at the slip sleeve two ends; The annular table at slip sleeve two ends cooperates with the ring-shaped step of upper cone and the annular table of lower cone respectively, and slip sleeve defines the ultimate range between upper cone and the lower cone.On slip sleeve, be evenly distributed with 3～6 groups of slips holes, there are two relative slots in every group of slips hole; A rectangle slips is arranged in every group of slips hole; There is a rectangular groove at described slips external surface middle part; An opening garter spring is arranged in the groove of 3～6 slips; The opening garter spring is fixed on slips on the outer wall of central tube, and the connector between every group of slips hole on the slip sleeve is in the groove at slips external surface middle part; At the two ends of slip sleeve axial rectangle pilot hole is arranged respectively, at each pilot hole and pass pilot hole a fixing pin is arranged, fixing pin is separately fixed on the outer wall of upper cone and lower cone; When upper cone or lower cone inwardly slided, fixing pin can slide in pilot hole; Described rectangle slips inwall two ends have taper seat respectively, and the gradient of the slips circular conical surface of inner wall tapering with the taper seat of upper cone and lower cone respectively is identical.
Slips can only radially open grappling synchronously and reclaim unfreezing, and can not axially produce relative displacement; After slips extended radially out a segment distance, its both sides step was blocked by slip sleeve and can not continue outer moving, and guaranteed that slips can only move in slip sleeve, avoided slips to come off; Just can not produce relative rotary motion between upper cone, the lower cone slip sleeve, can only produce relative motion in the axial direction and can not come off.
The beneficial effect of the utility model: the synchronous spacing anchor of the utility model packer, multi-disc slips can only radially open grappling synchronously and reclaim unfreezing under the restriction of opening garter spring, and can not axially produce relative displacement; Through step suspension in conical surface bottom stage and the slip sleeve end, cone can only be moved in slip sleeve and can not be come off after installation for upper cone and lower cone.Solved slips and come off and cause overhaul and the multi-disc slips to open and reclaim the asynchronous phenomenon of sitting card, grappling failure that causes, safe and reliable, success rate is high.
Description of drawings
Fig. 1 is the synchronous spacing anchor structural profile sketch map of the utility model packer.
Among the figure, 1-upper cone, 2-slip sleeve, 3-slips, 4-opening garter spring, 5-central tube, 6-lower cone, 7-fixing pin, 8-pilot hole.
The specific embodiment
Embodiment 1: with a synchronous spacing anchor of packer is example, and the utility model is done further explain.
Consult Fig. 1.The synchronous spacing anchor of the utility model packer mainly is made up of a upper cone 1, slip sleeve 2, four slips 3, opening garter spring 4, central tube 5, a lower cone 6 and four fixing pins 7.At the two ends of central tube 5 API standard oil tube external thread is arranged respectively.On the outer wall of central tube 5, be with upper cone 1 cylindraceous and lower cone 6; There is external screw thread described upper cone 1 upper end; There is taper seat the lower end of upper cone 1, on upper cone 1 lower end outer wall, ring-shaped step is arranged, and there is external screw thread described lower cone 6 lower ends; There is taper seat the upper end of lower cone 6, on lower cone 6 upper end outer walls, annular table is arranged.
On upper cone 1 outer wall and lower cone 6 outer walls, be with an annular slip sleeve 2; There is inwardly protruded annular table at slip sleeve 2 two ends; The annular table at slip sleeve 2 two ends cooperates with the ring-shaped step of upper cone 1 and the annular table of lower cone 6 respectively, and slip sleeve 2 defines the ultimate range between upper cone 1 and the lower cone 6.
On slip sleeve 2, be evenly distributed with four groups of slips holes, there are two relative slots in every group of slips hole; A rectangle slips 3 is arranged in every group of slips hole.There is a rectangular groove at described slips 3 external surfaces middle part; The opening garter spring 4 that an annular inclined open is arranged in the groove of four slips 3; Opening garter spring 4 is fixed on slips on the outer wall of (hoop exists) central tube 5, and the connector between every group of slips hole on the slip sleeve 2 is in the groove at slips 3 external surfaces middle part; At the two ends of slip sleeve 2 axial rectangle pilot hole 8 is arranged respectively, pilot hole 8 has two groups, and two groups of pilot holes 8 are symmetrically distributed.At each pilot hole 8 and pass pilot hole 8 fixing pin 7 is arranged, fixing pin 7 the inners are separately fixed on the outer wall of upper cone 1 or lower cone 6.Fixing pin 7 can slide in pilot hole 8.Described rectangle slips 3 inwall two ends have taper seat respectively, and the tapering of the taper seat of the gradient of slips 3 two ends circular conical surface of inner wall and upper cone 1 and lower cone 6 is 30 degree.
Claims (1)
1. synchronous spacing anchor of packer; Mainly form, screw thread is arranged, it is characterized in that: on the outer wall of central tube (5), be with upper cone cylindraceous (1) and lower cone (6) at the two ends of central tube (5) by upper cone (1), slip sleeve (2), slips (3), opening garter spring (4), central tube (5), lower cone (6) and fixing pin (7); There is external screw thread described upper cone (1) upper end; There is taper seat the lower end of upper cone (1), on the outer wall of upper cone (1) lower end, ring-shaped step is arranged, and there is external screw thread described lower cone (6) lower end; There is taper seat the upper end of lower cone (6), on the outer wall of lower cone (6) upper end, annular table is arranged; On upper cone (1) outer wall and lower cone (6) outer wall, be with an annular slip sleeve (2); There is inwardly protruded annular table at slip sleeve (2) two ends; The annular table at slip sleeve (2) two ends cooperates with the ring-shaped step of upper cone (1) and the annular table of lower cone (6) respectively, and slip sleeve (2) defines the ultimate range between upper cone (1) and the lower cone (6); On slip sleeve (2), be evenly distributed with 3～6 groups of slips holes, there are two relative slots in every group of slips hole; A rectangle slips (3) is arranged in every group of slips hole; There is a rectangular groove at described slips (3) external surface middle part; An opening garter spring (4) is arranged in the groove of 3～6 slips (3); Opening garter spring (4) is fixed on slips on the outer wall of central tube (5), and the connector between every group of slips hole on the slip sleeve (2) is in the groove at slips (3) external surface middle part; Axial rectangle pilot hole (8) is arranged respectively at the two ends of slip sleeve (2), and at each pilot hole (8) and pass pilot hole (8) fixing pin (7) is arranged, fixing pin (7) is separately fixed on the outer wall of upper cone (1) and lower cone (6); Fixing pin (7) can slide in pilot hole (8); Described rectangle slips (3) inwall two ends have taper seat respectively, and the gradient of slips (3) the circular conical surface of inner wall tapering with the taper seat of upper cone (1) and lower cone (6) respectively is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202055778U CN202117601U (en) | 2011-06-17 | 2011-06-17 | Synchronous limit anchor for packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202055778U CN202117601U (en) | 2011-06-17 | 2011-06-17 | Synchronous limit anchor for packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202117601U true CN202117601U (en) | 2012-01-18 |
Family
ID=45458674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202055778U Expired - Lifetime CN202117601U (en) | 2011-06-17 | 2011-06-17 | Synchronous limit anchor for packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202117601U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109138918A (en) * | 2018-09-26 | 2019-01-04 | 中国石油天然气股份有限公司 | A kind of anchoring type solvable pressure break ball seat and application method entirely |
| CN109915067A (en) * | 2019-04-25 | 2019-06-21 | 中国海洋石油集团有限公司 | A kind of anti-packer surprisingly unsealed |
-
2011
- 2011-06-17 CN CN2011202055778U patent/CN202117601U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109138918A (en) * | 2018-09-26 | 2019-01-04 | 中国石油天然气股份有限公司 | A kind of anchoring type solvable pressure break ball seat and application method entirely |
| CN109915067A (en) * | 2019-04-25 | 2019-06-21 | 中国海洋石油集团有限公司 | A kind of anti-packer surprisingly unsealed |
| WO2020215728A1 (en) * | 2019-04-25 | 2020-10-29 | 中国海洋石油集团有限公司 | Packer capable of preventing unexpected release |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120118 |