CN202249921U - Expanding type packer capable of unpacking stepwise - Google Patents
Expanding type packer capable of unpacking stepwise Download PDFInfo
- Publication number
- CN202249921U CN202249921U CN2011203861447U CN201120386144U CN202249921U CN 202249921 U CN202249921 U CN 202249921U CN 2011203861447 U CN2011203861447 U CN 2011203861447U CN 201120386144 U CN201120386144 U CN 201120386144U CN 202249921 U CN202249921 U CN 202249921U
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- deblocking
- center tube
- tube
- unpacking
- upper center
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Abstract
The utility model relates to an expanding type packer capable of unpacking stepwise, comprising an upper connector (1), a main base unpacking body (2), a central pipe (3), an upper rubber barrel base (4), a rubber barrel (5), a lower rubber barrel base (6) and a lower connector (7), wherein the central pipe (3) is composed of an upper central pipe (31) and a lower central pipe (32), a central pipe connector (8) is arranged at the connecting part of the upper central pipe (31) and the lower central pipe (32), a plurality of clamping blocks (9) are arranged at the wall part of the central pipe connector (8), the bottom end of the main base unpacking body (2) is sleeved on the upper rubber barrel base (4) in a sliding way and is axially connected with the upper rubber barrel base (4) by an unpacking pin (10). The expanding type packer has the advantages of single-layer unpacking stepwise, light unpacking force and simpliness in unpacking operation, and can unpack by adopting a backwashing unpacking way and an lifting unpacking way, when backwashing unpacking is not thorough, the packer can be unpacked stepwise by a single-layer way when a pipe column is lifted.
Description
Technical field
The utility model relates to petroleum tool, is specifically related to a kind of oil field and uses the water injection well packer.
Background technology
Subdivision injection is the effective ways that stable high yield is realized in the oil field.The subdivision injection water injection string needs multiple-string packer with injection well downhole flow regulator the oil reservoir of different permeabilities to be separated the realization seperated layer water injection; The inflatable packer that uses at present generally adopt backwash deblocking mode or on put forward the deblocking mode; For the packer of backwash deblocking mode, if progression is too much, then because the shunting of stratum shunting and each layer injection well downhole flow regulator water nozzle and can not deblocking thorough; The many more deblockings of progression are unreliable more; And because packer is in the process of down-hole, the corrosion of the greasy dirt in shaft bottom, foreign material, instrument all possibly make the deblocking passage of deblocking valve block, and decapsulation functions lost efficacy.And on carry the packer of deblocking mode, all by on carry and cut off the pin deblocking packer, and the deblocking pin is being born the withstand voltage of packer, in order to guarantee the pressure-bearing of packer, the deblocking pin designs to cut off load bigger, also be difficult for deblocking when progression is too much.Like this, during the lift pipe string operation because interval is too much, if the packer deblocking is not thorough, on to carry the integral tube column load excessive, can cause overhaul accidents such as card tubing string.。
Summary of the invention
[0003] purpose of the utility model provide a kind of can the individual layer gradually deblocking, little, the unsealing operation of needed deblocking power is easy to the expanding gradually deblocking packer.
The technical solution of the utility model is: it comprises top connection, an envelope valve is installed, seat deblocking main body, the central tube of high pressure deblocking valve and low pressure deblocking valve, go up glue tube base, packing element, lower rubber cylinder seat and lower contact; Central tube is made up of for two sections upper center tube and lower center tube; The upper end of upper center tube links to each other through screw thread with seat deblocking main body; The lower end of lower center tube links to each other through screw thread with lower contact; Last glue tube base, packing element and lower rubber cylinder seat are connected in order from the top down and are sleeved on the lower center tube; The position that upper center tube and lower center tube connect is provided with the lower end through the central tube joint of thread set on lower center tube; The upper end of central tube joint is provided with slip cap and is contained in the interior ring platform on the upper center tube; The outer shroud platform that the outer wall of upper center tube lower end is provided with the clamping that matches with the interior ring platform of central tube joint, is slidingly matched with the central tube inner nosepiece wall; The below of the interior ring of the central tube joint platform central tube joint wall portion of a segment distance separately is provided with several fixture block holes that are positioned at upper center tube outer shroud platform top, and the lower end slip cap of seat deblocking main body is contained in the deblocking pin that also passes through on the glue tube base radially to install on the present deblocking main body and axially links to each other with last glue tube base.
The technique effect of the utility model is: it has can the individual layer gradually deblocking, needed deblocking power is little, unsealing operation is easy to advantage.It can adopt backwash and on carry bilingual envelope mode deblocking, when the backwash deblocking not thorough, can the individual layer gradually deblocking packer during upper lifting pipe post; The deblocking power of higher level's packer does not receive the interference of lower packer deblocking power when being the upper lifting pipe post, and the deblocking power that needs is little; Thereby make each layer packer carry out gradually deblocking from top to bottom; Reduce the difficulty of construction effectively, accelerated the progress of construction, also avoided overhaul accident potential.In addition, it has independently seat envelope system and deblocking system, can solve the contradiction of existing packer pressure-bearing and deblocking, has solved the above technical barrier of subdivision of reservoir water filling Pyatyi packer effectively.
Description of drawings
Fig. 1 is the utility model embodiment segmentation sectional view;
Fig. 2 is the utility model embodiment seat deblocking main body high pressure deblocking valve portion sectional view;
Fig. 3 is the utility model embodiment seat deblocking main body low pressure deblocking valve portion sectional view.
The specific embodiment
Like Fig. 1, Fig. 2, shown in Figure 3; It comprises top connection 1, an envelope valve 21 is installed, seat deblocking main body 2, the central tube 3 of high pressure deblocking valve 22 and low pressure deblocking valve 23, go up glue tube base 4, packing element 5, lower rubber cylinder seat 6 and lower contact 7; Central tube 3 is made up of for 32 two sections upper center tube 31 and lower center tube; The upper end of upper center tube 31 and seat deblocking main body 2 link to each other through screw thread; The lower end of lower center tube 32 and lower contact 7 link to each other through screw thread; Last glue tube base 4, packing element 5 is connected with lower rubber cylinder seat 6 from the top down in order and be sleeved on the lower center tube 32; Upper center tube 31 is provided with the lower end through the central tube joint 8 of thread set on lower center tube 32 with the position that lower center tube 32 connects; The upper end of central tube joint 8 is provided with slip cap and is contained in the interior ring platform 81 on the upper center tube 31; The outer shroud platform 33 that the outer wall of upper center tube 31 lower ends is provided with the clamping that matches with the interior ring platform 81 of central tube joint 8, is slidingly matched with central tube joint 8 inwalls; In the central tube joint 8 below of ring platforms 81 separately the central tube joint 8 wall portions of a segment distance be provided with several fixture block holes 82 that are positioned at upper center tube outer shroud platform 33 tops, be separately installed with several fixture blocks 9 with the axial clamping mutually in upper surface of the outer shroud platform 33 of upper center tube 31 in each fixture block hole 82, the lower end slip cap of seat deblocking main body 2 is contained on the glue tube base 4 and pins and 10 axially link to each other with last glue tube base 4 through deblocking on the present deblocking main body 2 radially is installed.
Seat envelope valve 21 is made up of seat envelope valve body 24, needle-valve 25, spring 26 and seat envelope valve plug 27; Spring 26 is sleeved on the needle-valve 25, the upper end of spring 26 makes progress roof pressure is on needle-valve 25; Needle-valve 25 is positioned at the valve pocket that seat seals valve body 24 with spring 26; The upper end of needle-valve 25 makes progress, and roof pressure is present to be sealed on the valve body 24, and seat envelope valve plug 27 is sleeved on the lower end of needle-valve 25, on the present envelope of the lower end roof pressure of the spring 26 valve plug 27.The conical surface that the outer shroud platform 33 contacted lower surfaces of the outer shroud platform 33 of upper center tube 31 and fixture block 9 contacted upper surfaces and fixture block 9 and upper center tube 31 are respectively and cooperatively interact, can fixture block radially outward be pushed away.
The lower end of top connection 1 links to each other with the upper end of seat deblocking main body 2, through external screw thread the cap 11 fully on the present deblocking main body 2 of lower end roof pressure is installed through internal thread.Seat deblocking main body 2 is provided with on the inwall of radial direction through hole position tubular screen pack 12 is installed.Last glue tube base 4 is provided with the two seals circle with the outer wall that seat deblocking main body 2 is slidingly matched.Upper center tube 31 is provided with the two seals circle with outer shroud platform 33 outer walls that central tube joint 8 is slidingly matched.Link to each other with the central tube joint 8 screw threads outer wall of position top and lower center tube 32 sealing suits of lower center tube 32 is provided with the two seals circle.Upper center tube 31 is respectively equipped with several draw-in grooves 34 and trips 35 that match that prevent rotation each other with the end that lower center tube 32 connects up and down.The lower end of last glue tube base 4 through be positioned at glue tube base 4, be threaded on the glue tube base 4, connecting cylinder 41 links to each other with the upper end of packing element 5 on the packing element of the circumferential bulge loop in some roads that outer wall is provided with to be connected with packing element 5 and groove.The upper end of lower rubber cylinder seat 6 through be positioned at lower rubber cylinder seat 6, be threaded on the lower rubber cylinder seat 6, the lower ends of connecting cylinder 61 and packing element 5 under the packing element of the circumferential bulge loop in some roads that outer wall is provided with to be connected with packing element 5 and groove.Lower rubber cylinder seat 6 is provided with the two seals circle with the inwall that lower center tube 32 is slidingly matched.The position of the lower end of lower rubber cylinder seat 6 and lower contact 7 slip suits is an outer shroud platform 62, and the upper end of lower contact 7 radially is equipped with the top that is positioned at lower rubber cylinder seat outer shroud platform 62, the shear pin 71 that can prevent lower contact 7 downward slippages.Lower rubber cylinder seat outer shroud platform 62 is provided with the two seals circle with the outer wall that lower contact 7 is slidingly matched.
The course of work of the utility model may further comprise the steps:
The scheme of the utility model: it comprises a sealing mechanism reconciliation sealing mechanism.The seat sealing mechanism comprises: top connection 1, be equipped with cap 11, seat deblocking main body 2, seat envelope valve 21, needle-valve 25, spring 26, seat envelope valve plug 27, screen pack 12.Separating sealing mechanism comprises: top connection 1, be equipped with cap 11, seat deblocking main body 2, high pressure deblocking valve 22, low pressure deblocking valve 23, upper center tube 31, central tube joint 8, fixture block 9, lower center tube 32, go up glue tube base 4, packing element 5, lower rubber cylinder seat 6.
1. seat seals: this packer is lowered to desired depth; In oil pipe, add highly pressurised liquid, liquid gets into a seat envelope valve body 2 through the endoporus of screen pack 12 slits on the packer seat deblocking main body 2 on seat deblocking main body 2, is equipped with cap 11 and seat is sealed valve 21 compresses and make it can not be up; Behind seat envelope valve body 2 needle-valves 25 pressurizeds; Needle-valve 25 descending liquids get into packing element 5 inner chambers by the passage on the seat envelope valve 21, and packing element 5 is expanded, and seat is encapsulated in internal surface of sleeve pipe; The seat envelope is accomplished in ring-like space between closed casing and the oil pipe;
2. deblocking: stop water filling; Stop water filling during deblocking, upper lifting pipe post upper center tube 31 drives seat deblocking main body 2 and breaks the deblocking pin 10 between a deblocking main body 2 and the last glue tube base 4, because the frictional force between packing element 5 and the sleeve pipe; It is descending that glue tube base 4 is gone up in packing element 5 drives; Last glue tube base 4 inwalls and fixture block 9 are thrown off fixture block 9 releases, the elongation of central tube 3 ascenders, and the gap releases of liquid between upper center tube 31 and lower center tube 32 pass back into central tube 3 in the packing element 5; Packing element 5 retractions, the individual layer deblocking is accomplished.Continue the upper lifting pipe post, lower contact 7 drives the action of next stage packer, can accomplish the next stage deblocking, accomplishes until the whole deblockings of each layer packer.The utility model both can more than carry gradually deblocking, also can sleeve pipe the pressurization gradually deblocking, inject liquid in the sleeve pipe and open high pressure deblocking valve 22 and low pressure deblocking valve 23, make liquid release backflow deblockings in the packing element 5.
Claims (3)
1. expanding gradually deblocking packer; It comprises top connection (1), seat deblocking main body (2), the central tube (3) of an envelope valve (21), high pressure deblocking valve (22) and low pressure deblocking valve (23) are installed, go up glue tube base (4), packing element (5), lower rubber cylinder seat (6) and lower contact (7); It is characterized in that: central tube (3) is by upper center tube (31) and (32) two sections formations of lower center tube; The upper end of upper center tube (31) links to each other through screw thread with seat deblocking main body (2); The lower end of lower center tube (32) links to each other through screw thread with lower contact (7); Last glue tube base (4), packing element (5) and lower rubber cylinder seat (6) are connected in order from the top down and are sleeved on the lower center tube (32); The position that upper center tube (31) and lower center tube (32) connect is provided with the lower end through the central tube joint (8) of thread set on lower center tube (32); The upper end of central tube joint (8) is provided with slip cap and is contained in the interior ring platform (81) on the upper center tube (31); The outer shroud platform (33) that the outer wall of upper center tube (31) lower end is provided with the clamping that matches with the interior ring platform (81) of central tube joint (8), is slidingly matched with central tube joint (8) inwall; The below of central tube joint (8) interior ring platform (81) central tube joint (8) the wall portion of a segment distance separately is provided with several fixture block holes (82) that are positioned at upper center tube outer shroud platform (33) top; Be separately installed with several fixture blocks (9) with the axial clamping mutually in upper surface of the outer shroud platform (33) of upper center tube (31) in each fixture block hole (82), the lower end slip cap of seat deblocking main body (2) be contained in that glue tube base (4) is gone up and through radially install deblocking on the present deblocking main body (2) pin (10) axially link to each other with last glue tube base (4).
2. the conical surface that expanding gradually deblocking packer as claimed in claim 1, the contacted lower surface of outer shroud platform (33) of the outer shroud platform (33) that it is characterized in that said upper center tube (31) and the contacted upper surface of fixture block (9) and fixture block (9) and upper center tube (31) be respectively and cooperatively interact, can fixture block radially outward be pushed away.
3. expanding gradually deblocking packer as claimed in claim 1 is characterized in that the end that said upper center tube (31) and lower center tube (32) connect up and down is respectively equipped with several draw-in grooves (34) that match and the trip (35) that prevents rotation each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203861447U CN202249921U (en) | 2011-10-12 | 2011-10-12 | Expanding type packer capable of unpacking stepwise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203861447U CN202249921U (en) | 2011-10-12 | 2011-10-12 | Expanding type packer capable of unpacking stepwise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202249921U true CN202249921U (en) | 2012-05-30 |
Family
ID=46111180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203861447U Expired - Fee Related CN202249921U (en) | 2011-10-12 | 2011-10-12 | Expanding type packer capable of unpacking stepwise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202249921U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185655A (en) * | 2013-02-28 | 2013-07-03 | 中国石油集团川庆钻探工程有限公司 | Seal test method applicable to hydraulic jet sealing and separating tool |
| CN104499988A (en) * | 2014-12-31 | 2015-04-08 | 牡丹江博实石油机械科技有限公司 | Anchor detachable packer |
-
2011
- 2011-10-12 CN CN2011203861447U patent/CN202249921U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185655A (en) * | 2013-02-28 | 2013-07-03 | 中国石油集团川庆钻探工程有限公司 | Seal test method applicable to hydraulic jet sealing and separating tool |
| CN103185655B (en) * | 2013-02-28 | 2015-12-23 | 中国石油集团川庆钻探工程有限公司 | Be applicable to the tightness testing method of Water jet packing tool |
| CN104499988A (en) * | 2014-12-31 | 2015-04-08 | 牡丹江博实石油机械科技有限公司 | Anchor detachable packer |
| CN104499988B (en) * | 2014-12-31 | 2017-01-18 | 牡丹江博实石油机械科技有限公司 | Anchor detachable packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20141012 |
|
| EXPY | Termination of patent right or utility model |