CN205532458U - Packer is adopted to long -term separating of oil field - Google Patents

Abstract

The utility model provides a packer is adopted to long -term separating of oil field, by the top connection, the intubate, salvage the cover, the packing element, the spacer ring, the center tube, keep off and press the cover, go up the cone, the locking pin, the slips, a spring, the slips cover, lower cone, middle connector, start the shear pin, sit and seal the steel ball, the seat sealing ball seat, the shear pin of giving up, the leather cup, the connector, the sliding sleeve urceolus, the locking steel ball, the sliding sleeve, well core housing, reset spring, part such as lower clutch and end cap connects to form, it is with the packer, the intubate, prevent flowing backward the device and carried out integrated design, it accomplishes the seat and seals to have realized a tubular column, give up, production, construction process has greatly been simplified. The utility model discloses a recover the oil and the special packer of design to the broken well water proof of oil field cover, it does not influence normal oil recovery and integrated and has designed the supporting device of preventing flowing backward to seal during separating, have during examining the pump and prevent flowing backward the function, and it can to adopt specialized tool to salvage when needing the pit shaft operation.

Description

A kind of oil field is long-acting every adopting packer

Technical field

This utility model belongs to oil extraction in oil field process unit technical field, causes particularly to casing failure, corrosion failure The oil well of oil reservoir and water layer UNICOM every the process unit adopted.Be one be applicable to cased hole completion and reservoir upper sleeve run-down go out The reverse-filling of water is every adopting completion system, and specifically a kind of oil field is long-acting every adopting packer.

Background technology

Along with the continuity of oil field development time, down-hole casing occurs successively that because of reasons such as corrosion set is broken, causes stratum and oil Layer UNICOM, have impact on oil field and normally develops even pollution water source, stratum welding, surpasses 20,000 muzzles to middle oil is accumulative Broken well.The more common technique of well is broken for set and has casing patching, chemical plugging, secondary well cementation, packer every adopting, wherein insulate Device is simple every excavating technology, convenient construction, low cost account for overlapping brokenly more than 80% that well is administered.It is currently used for every the packer master adopted Having two kinds, one is that traditional Y111, Y211, Y341 etc. is conventional every adopting packer, and this type of packer is many is directly connected on oil recovery Tubing string lower end (uses screw thread to be rigidly connected), and in oil recovery process, flow string bends or string creep in production process in well Easily causing packer to lose efficacy, simultaneously the most once any one down-hole adnexa such as oil well pump goes wrong and must trip out pipe by deblocking packer Post, therefore overall effect duration is short, also finds that the many septums secundum of packer of the type are adopted at the scene and frequently can lead to packer in application The section of setting crimp, corrosion-damaged serious, operating mode are deteriorated to cause gradually to shorten every the cycle of adopting and even lost efficacy.Its two be Y141, The long-lives such as Y453, Y445, this type of packer entered to set, so under needing supporting special setting tool in advance every adopting packer Enter under Hou flow string cornice intubate dock after normally produce, when needing to trip out use specific purpose tool carry out bore mill, construct work Skill is complicated, cost is high.

Utility model content

The purpose of this utility model is to overcome above-mentioned problems of the prior art, for the broken well top water exclusion of oil field set And designing a kind of Special packer, this packer is combined with oil field rod-type pumping unit DP technology, it is achieved one-trip string completes to sit Seal, give up, produce, do not affect normal oil recovery and backward flowing preventing device that Integrated design is supporting during packing, have during inspection pump There is reverse-filling function, need to use specific purpose tool to carry out salvaging during wellbore operations.

The technical solution of the utility model is: a kind of oil field is long-acting every adopting packer, including top connection, intubate, fishing sleeve, Packing element, spacer ring, central canal, gear gland, upper cone, locking pin, slips, spring, slip sleeve, lower cone, center tap, startup are cut Follow closely, set steel ball, setting ball seat, shear pin of giving up, leather cup, union joint, sliding sleeve urceolus, locking steel ball, sliding sleeve, center, reset Spring, lower contact, plug；Described top connection is connected with intubating upper end, intubates first half outer sheath and is connected to central canal；It is positioned at and connects On the lower position of head, fishing sleeve, packing element, spacer ring and gear gland are socketed on central canal the most successively, described salvaging Set is connected with the upper end of central canal；Gear gland in cylindrical hole the most spacing with the external cylindrical surface of upper cone, the lower end of upper cone and Slip sleeve clamping, slip sleeve is provided with groove built with slips, the outer wall of described slips, and groove is built with spring, the interior cylinder of slip sleeve Face is the most spacing with lower cone external cylindrical surface；It is connected between upper cone with central canal and has locking pin, the cone of described upper cone Relative with the cone of lower cone；Described lower cone is socketed on the inner side of center tap upper end, connects between lower cone and center tap simultaneously Being connected to start shear pin, the lower end of central canal is connected with center tap, and center tap is connected with intubating, and intubating on inwall at center tap is logical Crossing shear pin of giving up and be fixed with setting ball seat, center tap extenal fixation has leather cup；Outside described center tap lower end is by union joint and sliding sleeve Cylinder connects, and is socketed with sliding sleeve in sliding sleeve urceolus, and sliding sleeve is provided with sliding sleeving hole, and sliding sleeving hole is built with locking steel ball；Outside described sliding sleeve Cylinder lower end be connected with the upper end of center, the lower end of center is connected with lower contact, be positioned at inside center sliding sleeve lower end with And the sliding sleeve intracavity above lower contact is provided with back-moving spring, described in the lower end that intubates be connected with plug；Intubate interior setting ball Seat is provided with and sets steel ball.

The inner side of above-mentioned packing element, spacer ring and gear gland is provided with the packing element overcoat being socketed on central canal.

The upper end of above-mentioned upper cone is connected between lower end and the gear gland of packing element overcoat.

It is provided with sealing gasket between above-mentioned central canal and packing element overcoat.

It is provided with sealing ring between above-mentioned lower cone and center tap；Between described central canal 9 and lower cone 16, center tap 17 And it is equipped with sealing ring between central canal 9；Described setting ball seat and be provided with sealing ring between intubating；Described sliding sleeve urceolus and sliding sleeve Between be provided with sealing ring.

Fixed by the first attachment screw between above-mentioned fishing sleeve and central canal；Described center tap and between intubating by the Two attachment screws are fixed.

The above-mentioned lower end intubated is threadeded with plug；Threaded between described center tap lower end and union joint；Institute State and threaded between the lower end of central canal and center tap；Threaded with the lower end of union joint in the described upper end of sliding sleeve urceolus, The described lower end of sliding sleeve urceolus is connected with the threaded upper ends of center；Threaded with lower contact in the lower end of described center.

Above-mentioned leather cup is fixed on outside center tap by leather cup skeleton；Threaded between leather cup skeleton and center tap；Institute State the leather cup sulfuration outer wall at leather cup skeleton.

It is connected between above-mentioned center tap with leather cup skeleton and has anti-loosing screw.

Above-mentioned leather cup skeleton outside screw connects sheath.

The beneficial effects of the utility model: the first, the packer involved by this utility model is integral type, will insulate Device, intubate, backward flowing preventing device has carried out Integrated design, it is achieved that one-trip string completes to set, gives up, produces, and greatly simplifies Construction technology.

The second, this packer uses and starts the shear pin stepped design with shear pin bearing strength of giving up to control packer Start and set (7 MPa～10MPa) and give up (18MPa～20MPa), use and intubate mechanical type control backward flowing preventing device keying, Achieve packer setting and lower floor exploitation substep to carry out, improve and be constructed into power.

3rd, this packer devises leather cup in slips bottom first, between packing element (after setting) and leather cup Forming sealing space makes slips isolate with well liquid within the cartridge, therefore significantly improves the working environment of slips, causes permanent worker Remain to easy slide after work and reduce packer chance card probability.

4th, this packer indoor design fishing sleeve, all stays well after packer completes to give up below fishing sleeve In tin, use when needing to salvage conventional reversible box cupling to drag for lance salvaging and fishing sleeve can be caught smoothly to realize the later stage of packer Salvage.

5th, the self-locking dependence lower cone of this packer, the self-locking angle between slips and upper cone with slips have coordinated Become, therefore simplify self-locking technique, greatly reduce tool design cost and self-locking mechanism failure probability.

Below with reference to accompanying drawing, this utility model is described in further details.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Description of reference numerals: 1, top connection；2, intubate；3, fishing sleeve；4, packing element overcoat；5, the first attachment screw；6, close Packing；7, packing element；8, spacer ring；9, central canal；10, gear gland；11, upper cone；12, locking pin；13, slips；14, spring； 15, slip sleeve；16, lower cone；17, center tap；18, shear pin is started；19, steel ball is set；20, setting ball seat；21, give up and cut Nail；22, the second attachment screw；23, leather cup；24, sheath；25, anti-loosing screw；26, leather cup skeleton；27, union joint；28, sliding sleeve Urceolus；29, locking steel ball；30, sliding sleeve；31, center；32, back-moving spring；33, lower contact；34, plug.

Detailed description of the invention

Embodiment 1:

As it is shown in figure 1, this utility model to provide a kind of oil field long-acting every adopting packer, including top connection 1, intubate 2, beat Drag for set 3, packing element 7, spacer ring 8, central canal 9, gear gland 10, upper cone 11, locking pin 12, slips 13, spring 14, slip sleeve 15, lower cone 16, center tap 17, start shear pin 18, set steel ball 19, setting ball seat 20, shear pin 21 of giving up, leather cup 23, connect 27, the parts such as sliding sleeve urceolus 28, locking steel ball 29, sliding sleeve 30, center 31, back-moving spring 32, lower contact 33, plug 34； Described top connection 1 is connected with intubating 2 upper ends, intubates 2 first half outer sheath and is connected to central canal 9；It is positioned at the lower position of top connection 1 On, fishing sleeve 3, packing element 7, spacer ring 8 and gear gland 10 are socketed on central canal 9 the most successively, described fishing sleeve 3 with in The upper end of heart pipe 9 connects；In gear gland 10, cylindrical hole is the most spacing with the external cylindrical surface of upper cone 11；Gear gland 10 and upper cone The upper end clamping of 11, the lower end of upper cone 11 and slip sleeve 15 clamping, slip sleeve 15 is built with slips 13, outside described slips 13 Wall is provided with groove, and groove is built with spring 14, and the inner cylinder face of slip sleeve 15 is the most spacing with lower cone 16 external cylindrical surface；Slip sleeve 15 Lower end be connected with lower cone 16；It is connected between upper cone 11 with central canal 9 and has locking pin 12, the cone of described upper cone 11 Relative with the cone of lower cone 16；The present embodiment is capable of auto-lock function, i.e. relies on lower cone 16, slips 13 and upper cone 11 Coordinate with the self-locking angle between slips 13, simplified self-locking technique, greatly reduce tool design cost and from lock machine Structure failure probability.Described lower cone 16 is socketed on the inner side of center tap 17 upper end, connects between lower cone 16 and center tap 17 simultaneously Being connected to start shear pin 18, the lower end of central canal 9 is connected with center tap 17, and center tap 17 is connected with intubating 2, inserting at center tap 17 Being fixed with setting ball seat 20 by shear pin 21 of giving up on pipe 2 inwall, center tap 17 extenal fixation has leather cup 23, and this packer exists first Slips 13 bottom devises leather cup 23, after packing element 7(sets) and leather cup 23 between formed seal space make slips 13 Isolate with well liquid within the cartridge, therefore significantly improve the working environment of slips 13, after causing long-term work, remain to easy slide Reduce packer and meet card probability.Described center tap 17 lower end is connected with sliding sleeve urceolus 28 by union joint 27, sliding sleeve urceolus 28 Inside being socketed with sliding sleeve 30, sliding sleeve 30 is provided with sliding sleeving hole, and sliding sleeving hole is built with locking steel ball 29；The lower end of described sliding sleeve urceolus 28 Being connected with the upper end of center 31, the lower end of center 31 is connected with lower contact 33, is positioned at sliding sleeve 30 lower end inside center 31 And the sliding sleeve intracavity above lower contact 33 is provided with back-moving spring 32, described in intubate the lower end of 2 and be connected with plug 34；In intubating 2 Setting ball seat 20 be provided with and set steel ball 19.

The present embodiment provide packer be integral type, will packer, intubate, backward flowing preventing device has carried out integrated setting Meter, it is achieved that one-trip string completes to set, gives up, produces, and greatly simplifies construction technology.Only this packer need to be connected In oil extraction in oil field tubing string, its tubing string may be designed as (from well head to down-hole): oil pipe+oil well pump+the design is long-acting every adopting envelope Every device+tail pipe+the most stifled, its Central Plains pump standing valve needs to be replaced by special valve (can cross stream, overvoltage).Oil pipe is suppressed, when pressure to 7 During MPa～10MPa, packer starts and sets, and when pressure to 18MPa～20MPa, packer is given up then pressure release, now uses Intubating 2 control backward flowing preventing devices to open and close, can realize normally recovering the oil, this packer achieves packer setting and exploits with lower floor Substep is carried out, and improves and is constructed into power.This packer indoor design fishing sleeve 3, from salvaging after packer completes to give up Set less than 3 is all stayed in pit shaft, uses when needs are salvaged conventional reversible box cupling to drag for lance salvaging and can catch fishing sleeve 3 smoothly The later stage realizing packer salvages.

Embodiment 2:

On the basis of embodiment 1, the inner side of described packing element 7, spacer ring 8 and gear gland 10 is provided with and is socketed on central canal 9 Packing element overcoat 4.The upper end of described upper cone 11 is connected between lower end and the gear gland 10 of packing element overcoat 4.Described center It is provided with sealing gasket 6 between pipe 9 and packing element 7, lower cone 16 and center tap 17；Between described lower cone 16 and center tap 17, Between described central canal 9 and lower cone 16, between center tap 17 and central canal 9, it is equipped with sealing ring；Setting ball seat 20 with intubate 2 Between, be equipped with sealing ring between sliding sleeve urceolus 28 and sliding sleeve 30.It is connected by first between described fishing sleeve 3 and central canal 9 Screw 5 is fixed；Described center tap 17 and intubating is fixed by the second attachment screw 22 between 2.Described intubate the lower end of 2 with stifled Between 34, between center tap 17 lower end and union joint 27, between the lower end of central canal 9 and center tap 17, sliding sleeve urceolus 28 Between the lower end of upper end and union joint 27, between the lower end of sliding sleeve urceolus 28 and the upper end of center 31 and center 31 times All it is attached by screw thread between end and lower contact 33.Described leather cup 23 is fixed on outside center tap 17 by leather cup skeleton 26 Side；Threaded between leather cup skeleton 26 with center tap 17；Described leather cup 23 vulcanizes the outer wall at leather cup skeleton 26.Connect in described Between 17 and leather cup skeleton 26, it is also associated with anti-loosing screw 25.The most threaded outside leather cup skeleton 26 have sheath 24.

Assembling process of the present utility model: first spring 14 is put into the outer wall trench of slips 13 then from slip sleeve 15 pressure measurement Entering (generally 3) in slip sleeve 15 hole, the most again upper cone 11(be generally 2～3) to put into slip sleeve 15 another in one end One end is hung on packing element overcoat 4 outer wall, is finally inserted by the central canal 9 installing sealing gasket 6；First load onto close at lower cone 16 inside and outside wall Seal is inserted into center tap 17(sealing ring and installs) in again screw in start shear pin 18, then central canal 9 is inserted lower cone 16 and threaded with center tap 17, screw in locking pin 12, then from packing element after now adjusting the position of upper cone 11 Overlapping 4 tops and penetrate gear gland 10, packing element 7, spacer ring 8, fishing sleeve 3 successively, the position then adjusting fishing sleeve 3 screws in the first connection Screw 5, now completes upper part and installs.

First in the outer wall trench of setting ball seat 20, install sealing ring to be then placed in intubating inside 2, use specific purpose tool to push Screwed hole to setting ball seat 20 aligns with the screwed hole intubating 2, is then threaded into shear pin 21 of giving up；By top connection 1 with intubate 2 spiral shells Stricture of vagina connects, and now completes mid portion and installs.

First loading onto sealing ring inside sliding sleeve urceolus 28, then bottom and center 31 are threadeded in top with union joint 27 Threaded, in the hole of sliding sleeve 30 load locking steel ball 29(be generally 2～3) be then placed in back-moving spring 32 after wear successively Enter center 31, sliding sleeve urceolus 28, union joint 27 inwall, finally lower contact 33 is threadeded with center 31, now complete Lower part is installed.

Finally mid portion is inserted inside upper part, after the screwed hole intubating 2 aligns with center tap 17 screwed hole again Screw-in is given up shear pin 21；First leather cup skeleton 26(leather cup 23 is vulcanized at leather cup skeleton 26 outer wall) after center tap 17 bottom is inserted in Threaded with center tap 17, then screw in anti-loosing screw 25, finally sheath 24 is threadeded with leather cup skeleton 26；Again connection 27 threaded with center tap 17；The last steel ball 19 that will set from top is put into and is intubated 2 and i.e. complete all installation processes.

Working mechanism of the present utility model is following (with 5¹/₂As a example by the set of oil pipe completion breaks well construction):

1, normal lower brill

This packer is mainly used in the broken well top water exclusion of oil field set, and its completion tubular column may be designed as (from well head to down-hole): Oil pipe+oil well pump+the design is long-acting every adopting packer+tail pipe+the most stifled, and its Central Plains pump standing valve needs to be replaced by special valve (can Cross stream, overvoltage), normal under be drilled into design attitude connected pipes and hang.

2, set packer

Suppressing in oil pipe, when pressurization reaches 7MPa～10MPa, startup shear pin 18, locking pin 12 are cut off successively, pressure Continuing to rise, pressure promotes lower cone 16 and promotes slips 13, slip sleeve 15, upper cone 11, gear gland 10 up, with this successively Packing element 7 is compressed simultaneously, and after slips 13 supporting sleeve is firm, packing element 7 continues to be compressed to form top seal, and leather cup 23 is formed Bottom self sealss, in therefore slips is in sealing space.Continue to suppress shear pin 21 of giving up when pressure is more than 18MPa～20MPa Cutting off, set steel ball 19 and fall into plug 34 top with setting ball seat 20, now ball seat pressure release shows that instrument sets completely and gives up.

3, normal oil recovery and inspection pump

Lower oil well pump, sucker rod also touch pump, and the most special valve is seated on ball seat (being equivalent to conventional standing valve), and installation is adopted Can start after oil well mouth and oil pumper normally to recover the oil, now the eyelet alignment of sliding sleeve urceolus 28 and sliding sleeve 30, bottom oil layer warp Feed pathway, normal oil recovery completely separated with packer top is formed between this hole and oil well pump.

When needing to examine pump, lay down oil pumper and production wellhead, trip out sucker rod, then trip out flow string (due to packing Device has been set therefore remainder and has been fixed on sleeve pipe by slips 13, and therefore the second attachment screw 22 is cut off, and above connects 1, intubate 2 be separately from other sections, tripping out tubing string is: oil pipe+oil well pump+top connection 1+ intubates 2), now locking steel ball 29 Losing the inner support intubating 2, promote sliding sleeve 30 up under the effect of back-moving spring 32, feed pathway is closed, even if at height Will not connect under pressure reduction, can trip out flow string and carry out pump detection and workover, packer does not the most connect and has in the process yet Reverse-filling function.

Inspection pump is lower flow string (oil pipe+oil well pump+top connection 1+ intubates 2) after terminating, and intubates 2 by pushing away locking steel ball 29 Make sliding sleeve 30 descending until the eyelet alignment of sliding sleeve urceolus 28 and sliding sleeve 30 forms feed pathway again, can start again to adopt Oil.

4, packer is salvaged

When packer salvaged by needs, first according to inspection pump program, sucker rod, flow string are tripped out, then use F73mm Instrument oil pipe+F73mm box cupling drags for lance and salvages under (reversible), fishing spear catch fishing sleeve 3 after on carry and drive outside packing element successively Set 4, upper cone 11, slip sleeve 15 are up, and slips 13, lower cone 16 have bounced back deblocking simultaneously, and upper lifting pipe post can complete this Packer is salvaged.

To sum up, this utility model is the Special packer designed for the oil field broken well top water exclusion of set, this packer with Oil field rod-type pumping unit DP technology combines, it is possible to achieve one-trip string completes to set, gives up, produces, and does not affects during packing Normal recover the oil and the supporting backward flowing preventing device of Integrated design, during inspection pump, there is reverse-filling function, need wellbore operations Shi Caiyong specific purpose tool carries out salvaging.Concrete advantage includes the following:

The first, the packer involved by this utility model is integral type, will packer, intubate, backward flowing preventing device is carried out Integrated design, it is achieved that one-trip string completes to set, gives up, produces, and greatly simplifies construction technology；

The second, this packer uses and starts the shear pin stepped design with shear pin bearing strength of giving up to control packer Start and set (7 MPa～10MPa) and give up (18MPa～20MPa), use and intubate mechanical type control backward flowing preventing device keying, Achieve packer setting and lower floor exploitation substep to carry out, improve and be constructed into power；

3rd, this packer devises leather cup in slips bottom first, between packing element (after setting) and leather cup Forming sealing space makes slips isolate with well liquid within the cartridge, therefore significantly improves the working environment of slips, causes permanent worker Remain to easy slide after work and reduce packer chance card probability；

4th, this packer indoor design fishing sleeve, all stays well after packer completes to give up below fishing sleeve In tin, use when needing to salvage conventional reversible box cupling to drag for lance salvaging and fishing sleeve can be caught smoothly to realize the later stage of packer Salvage；

5th, the self-locking dependence lower cone of this packer, the self-locking angle between slips and upper cone with slips have coordinated Become, therefore simplify self-locking technique, greatly reduce tool design cost and self-locking mechanism failure probability.

In present embodiment, the part of not narration in detail belongs to the known conventional means of the industry, chats the most one by one State.Exemplified as above is only to illustration of the present utility model, is not intended that the restriction to protection domain of the present utility model, Within the every and same or analogous design of this utility model belongs to protection domain of the present utility model.

Claims (10)

1. oil field is long-acting every adopting a packer, including top connection (1), intubate (2), fishing sleeve (3), packing element (7), spacer ring (8), Central canal (9), gear gland (10), upper cone (11), locking pin (12), slips (13), spring (14), slip sleeve (15), under Cone (16), center tap (17), start shear pin (18), set steel ball (19), setting ball seat (20), shear pin of giving up (21), leather cup (23), union joint (27), sliding sleeve urceolus (28), locking steel ball (29), sliding sleeve (30), center (31), back-moving spring (32), under Joint (33), plug (34)；It is characterized in that: described top connection (1) is connected with intubating (2) upper end, intubate outside (2) first half It is socketed with central canal (9)；It is positioned on the lower position of top connection (1), fishing sleeve (3), packing element (7), spacer ring (8) and gear gland (10) being socketed on the most successively on central canal (9), described fishing sleeve (3) is connected with the upper end of central canal (9)；Gear gland (10) interior cylindrical hole is the most spacing with the external cylindrical surface of upper cone (11), the lower end of upper cone (11) and slip sleeve (15) clamping, Slip sleeve (15) is provided with groove built with slips (13), the outer wall of described slips (13), and groove is built with spring (14), slip sleeve (15) Inner cylinder face the most spacing with lower cone (16) external cylindrical surface；It is connected between upper cone (11) with central canal (9) and has lock pin Nail (12), the cone of described upper cone (11) is relative with the cone of lower cone (16)；Described lower cone (16) is socketed on center tap (17) inner side of upper end, is connected between lower cone (16) with center tap (17) simultaneously and has startup shear pin (18), under central canal (9) End is connected with center tap (17), and center tap (17) is connected with intubating (2), and center tap (17) place intubates on (2) inwall by losing Hand shears nail (21) is fixed with setting ball seat (20), and center tap (17) extenal fixation has leather cup (23)；Described center tap (17) lower end leads to Crossing union joint (27) to be connected with sliding sleeve urceolus (28), be socketed with sliding sleeve (30) in sliding sleeve urceolus (28), sliding sleeve (30) is provided with cunning Trepanning, sliding sleeving hole is built with locking steel ball (29)；The lower end of described sliding sleeve urceolus (28) is connected with the upper end of center (31), in The lower end of heart set (31) is connected with lower contact (33), and center (31) inner side is positioned in sliding sleeve (30) lower end and lower contact (33) The sliding sleeve intracavity of side is provided with back-moving spring (32), described in intubate the lower end of (2) and be connected with plug (34)；Intubate setting in (2) Ball seat (20) is provided with and sets steel ball (19).

2. a kind of oil field as claimed in claim 1 is long-acting every adopting packer, it is characterised in that described packing element (7), spacer ring (8) It is provided with the packing element overcoat (4) being socketed on central canal (9) with the inner side of gear gland (10).

3. a kind of oil field as claimed in claim 2 is long-acting every adopting packer, it is characterised in that the upper end of described upper cone (11) It is connected between lower end and gear gland (10) of packing element overcoat (4).

4. a kind of oil field as claimed in claim 2 is long-acting every adopting packer, it is characterised in that described central canal (9) and packing element Sealing gasket (6) it is provided with between overcoat (4).

5. oil field as claimed in claim 1 a kind of is long-acting every adopting packer, it is characterised in that described lower cone (16) with in Joint is provided with sealing ring between (17)；

Between described central canal (9) and lower cone (16), between center tap (17) and central canal (9), it is equipped with sealing ring；

Described setting ball seat (20) and intubate and be provided with sealing ring between (2)；

It is provided with sealing ring between described sliding sleeve urceolus (28) and sliding sleeve (30).

6. a kind of oil field as claimed in claim 1 is long-acting every adopting packer, it is characterised in that described fishing sleeve (3) and center Fixed by the first attachment screw (5) between pipe (9)；Described center tap (17) and intubating between (2) by the second attachment screw (22) fixing.

7. oil field as claimed in claim 1 a kind of is long-acting every adopting packer, it is characterised in that described in intubate the lower end of (2) Threaded with plug (34)；

Threaded between described center tap (17) lower end with union joint (27)；The lower end of described central canal (9) and center tap (17) between threaded；

Threaded with the lower end of union joint (27) in the upper end of described sliding sleeve urceolus (28), the lower end of described sliding sleeve urceolus (28) with The threaded upper ends of center (31) connects；

Threaded with lower contact (33) in the lower end of described center (31).

8. a kind of oil field as claimed in claim 1 is long-acting every adopting packer, it is characterised in that described leather cup (23) passes through leather cup Skeleton (26) is fixed on center tap (17) outside；Threaded between leather cup skeleton (26) with center tap (17)；Described leather cup (23) sulfuration outer wall in leather cup skeleton (26).

9. a kind of oil field as claimed in claim 8 is long-acting every adopting packer, it is characterised in that described center tap (17) and leather cup Connect between skeleton (26) and have anti-loosing screw (25).

10. a kind of oil field as claimed in claim 8 is long-acting every adopting packer, it is characterised in that described leather cup skeleton (26) is outward Side is threaded sheath (24).