阅读说明：本技术 一种快速回缩的扩张封隔器胶筒 (A kind of amplificate packer packing element of snapback ) 是由 李德忠 钱钦 张雷 任从坤 张剑 车传睿 田俊 刘艳霞 张福涛 丛娟 于 2018-05-18 设计创作，主要内容包括：本发明公开了一种快速回缩的扩张封隔器胶筒,包括胶筒,还包括支架总成、支架回位驱动机构,所述胶筒的上端连接硫化上接头,下端连接硫化下接头,所述支架回位驱动机构包括上支架回位驱动机构、下支架回位驱动机构,所述支架总成包括至少三个均角度设置在胶筒内部的支架,所述支架包括骨架板、基杆、斜杆,所述骨架板硫化镶嵌在胶筒中,所述斜杆位于胶筒内腔中,斜杆包括相对称的上斜段和下斜段,所述斜杆中部通过基杆连接骨架板。胶筒在自身恢复力下反弹恢复,同时密闭腔内活塞在腔内压力和弹簧作用下推动活塞,辅助并加速胶筒的回缩,是封隔器解封能力提升,保护胶筒,提高胶筒再利用可靠性。(The invention discloses a kind of amplificate packer packing elements of snapback, including packing element, it further include bracket assembly, bracket return driving mechanism, the upper end connection vulcanization top connection of the packing element, lower end connection vulcanization lower contact, the bracket return driving mechanism includes upper bracket return driving mechanism, lower bracket return driving mechanism, the bracket assembly includes the bracket that at least three equal angles are arranged in inside packing element, the bracket includes frame board, base shaft, brace, the frame board vulcanization is embedded in packing element, the brace is located in packing element inner cavity, brace includes symmetrical upsloping segment and oblique section, pass through base shaft connecting framework plate in the middle part of the brace.Packing element rebounds recovery under self-recovery power, while closed chamber inner piston pushes piston under cavity pressure and spring effect, assists and accelerates the retraction of packing element, be removing seal for packer capability improving, protects packing element, improves packing element and recycles reliability.)

1. a kind of amplificate packer packing element of snapback, including packing element, which is characterized in that further include bracket assembly, bracket time Position driving mechanism, the upper end connection vulcanization top connection of the packing element, lower end connection vulcanization lower contact, the bracket return driving machine Structure includes upper bracket return driving mechanism, lower bracket return driving mechanism, and the bracket assembly includes that at least three equal angles are set The bracket inside packing element is set, the bracket includes frame board, base shaft, brace, and the frame board vulcanization is embedded in packing element, institute It states brace to be located in packing element inner cavity, brace includes symmetrical upsloping segment and oblique section, passes through base shaft connection in the middle part of the brace Frame board is provided with the upper bracket return driving mechanism inwardly moved for crowded brace upsloping segment diameter in the vulcanization top connection, The lower bracket return driving mechanism inwardly moved for oblique section of diameter of crowded brace is provided in the vulcanization lower contact.

2. a kind of amplificate packer packing element of snapback according to claim 1, which is characterized in that the brace is platform Rank brace or straight brace, step brace include the oblique section of top bar and get out of a predicament or an embarrassing situation oblique section, and straight brace includes upper straight tiltedly section and lower straight Oblique section.

3. a kind of amplificate packer packing element of snapback according to claim 1 or 2, which is characterized in that the skeleton The vulcanization hole of plate setting rectangle.

4. a kind of amplificate packer packing element of snapback according to claim 1 or 2, which is characterized in that the upper branch Frame return driving mechanism includes that upper piston, upper spring, upper piston are got out of a predicament or an embarrassing situation cylinder, and the vulcanization top connection opens up upper piston chamber, Upper piston and upper spring, the upper piston and upper piston chamber are installed to seal by sealing ring in upper piston chamber, the upper piston chamber Only one lower port, the lower port are up connected to upper piston lower end surface, down connection packing element inner cavity, on the upper piston End with upper spring under end in contact, upper piston lower end connection upper piston gets out of a predicament or an embarrassing situation cylinder, is axially moved by upper piston cylinder of getting out of a predicament or an embarrassing situation Dynamic, the upper piston crowded brace upsloping segment diameter of cylinder inner wall of getting out of a predicament or an embarrassing situation inwardly moves, and brace upsloping segment is quick with frame board and packing element Radial retraction.

5. a kind of amplificate packer packing element of snapback according to claim 1 or 2, which is characterized in that the lower branch Frame return driving mechanism includes lower piston, lower spring, lower piston top bar cylinder, and the vulcanization lower contact opens up lower piston chamber, Lower piston and lower spring, the lower piston and lower piston chamber are installed to seal by sealing ring in lower piston chamber, the lower piston chamber Only one upper port, the upper port are connected to lower piston upper surface down, up connection packing element inner cavity, under the lower piston End is contacted with lower spring upper end, and lower piston upper end connects lower piston top bar cylinder, is axially moved by lower piston top bar cylinder Dynamic, oblique section of diameter of the crowded brace of lower piston top bar cylinder inner wall inwardly moves, and oblique section of brace quick with frame board and packing element Radial retraction.

6. a kind of amplificate packer packing element of snapback according to claim 1 or 2, which is characterized in that the vulcanization Top connection outer wall, vulcanization lower contact outer wall open up vulcanization annular groove, vulcanize annular groove and packing element sulfides.

Technical field

The present invention relates to oil mining field, the amplificate packer packing element of specifically a kind of snapback.

Background technique

With the demand of oil reservoir fine development, higher want is proposed to oil-water well underground Inter-zonal packing and operation technique It asks, at present since well-flushing, the maintenance of underground corollary equipment etc. need, sets deblocking operation 3 to 4 times or more, and because well every year The presence of lower oil jacket pressure difference and interlayer pressure difference leads to amplificate packer packing element deblocking failure or packing element retraction slowly, or deblocking is not It thoroughly scrapes packing element outer wall and casing, destroys a possibility that packing element is reused.

Application number: 201610287713.X, publication date 2016-07-20 disclose a kind of packing element, and in particular to one Spiral packing element of the kind with steel skeleton.The packing element includes packing element ontology, and the packing element ontology is tubular, packing element ontology On be provided with spiral lamination, be enclosed with helical spring in the spiral lamination of packing element ontology.The packing element structure is simple, and practicability is good, passes through The helical spring wrapped up in packing element ontology can under pressure uniformly transfer axial compressive force on packing element ontology, and spiral The axial deflection of spring is consistent with packing element ontology, makes packing element ontology uniform force, and the intermediate position of packing element ontology is avoided to occur Bending deformation increases sealing area and stability to increase the contact length of packing element ontology and the borehole wall；Reduce " shoulder It is prominent " phenomenon.Helical spring accumulation of energy in compression simultaneously, when packing element unseals, helical spring, which releases energy, can make the fast quick-recovery of packing element Original state.

Patent disclosed above is a compression packer packing element, and during field conduct, compression-type packing element seal process is Oil jacket annulus sealing is completed by packing element axial shortening and the compound deformation of radial outward dilations, but the helical spring in the patent is obvious Do not have the function of radial deformation, packing element ontology is easy to produce when implementing at the scene and helical spring is removed, destroying packing element causes The case where sealing failure, there is apparent field application technological deficiency.

Summary of the invention

The purpose of the present invention is to provide a kind of amplificate packer packing elements of snapback, innovatively devise a pair of of compression Spring, compressed spring when setting store energy in closed chamber, while getting out of the way setting position, make packing element under action of hydraulic force Expansion is set；After discharging hydraulic coupling, packing element rebound recovery under self-recovery power, at the same closed chamber inner piston cavity pressure with Spring effect is lower to push piston, assists and accelerates the retraction of packing element, be removing seal for packer capability improving, protect packing element, improves glue Cylinder recycles reliability.

In order to achieve the above objectives, present invention employs following technical solution, a kind of amplificate packer glue of snapback Cylinder, including packing element further include bracket assembly, bracket return driving mechanism, the upper end connection vulcanization top connection of the packing element, lower end Connection vulcanization lower contact, the bracket return driving mechanism includes upper bracket return driving mechanism, lower bracket return driving mechanism, The bracket assembly includes the bracket that at least three equal angles are arranged in inside packing element, and the bracket includes frame board, base shaft, tiltedly Bar, frame board vulcanization are embedded in packing element, and the brace is located in packing element inner cavity, brace include symmetrical upsloping segment with Oblique section, the brace middle part passes through base shaft connecting framework plate, is provided on crowded brace in the vulcanization top connection tiltedly The upper bracket return driving mechanism inwardly moved of section diameter is provided in the vulcanization lower contact inside for oblique section of diameter of crowded brace The lower bracket return driving mechanism of shifting.

The brace is step brace or straight brace, and step brace includes the oblique section of top bar and gets out of a predicament or an embarrassing situation oblique section, it is straight tiltedly Bar includes upper straight tiltedly section and lower straight oblique section.

The vulcanization hole of the frame board setting rectangle.

The upper bracket return driving mechanism includes that upper piston, upper spring, upper piston are got out of a predicament or an embarrassing situation cylinder, is connect in the vulcanization Head opens up upper piston chamber, and upper piston and upper spring are installed in upper piston chamber, and the upper piston and upper piston chamber are close by sealing ring Envelope, described only one lower port of upper piston chamber, the lower port are up connected to upper piston lower end surface, are connected in packing element down Chamber, end in contact under the upper piston upper end and upper spring, upper piston lower end connection upper piston are got out of a predicament or an embarrassing situation cylinder, by under upper piston The axial movement of step cylinder, the upper piston crowded brace upsloping segment diameter of cylinder inner wall of getting out of a predicament or an embarrassing situation inwardly move, and brace upsloping segment is with bone Frame plate and packing element rapidly radially bounce back.

The lower bracket return driving mechanism includes lower piston, lower spring, lower piston top bar cylinder, is connect under the vulcanization Head opens up lower piston chamber, and lower piston and lower spring are installed in lower piston chamber, and the lower piston and lower piston chamber are close by sealing ring Envelope, described only one upper port of lower piston chamber, the upper port are connected to lower piston upper surface down, are up connected in packing element Chamber, the lower piston lower end are contacted with lower spring upper end, and lower piston upper end connects lower piston top bar cylinder, by lower piston The axial movement of step cylinder, oblique section of diameter of the crowded brace of lower piston top bar cylinder inner wall inwardly move, and oblique section of brace with bone Frame plate and packing element rapidly radially bounce back.

The vulcanization top connection outer wall, vulcanization lower contact outer wall open up vulcanization annular groove, vulcanize annular groove and packing element vulcanization exists Together.

Compared with the prior art, the invention has the following beneficial effects:

(1) compressed spring and confined space auxiliary packing element retraction；

(2) vulcanize bracket in packing element, pressure bearing and seal ability is strong；

(3) design forms and sets latch mechanism, avoids setting certainly because of oil jacket pressure difference.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of the amplificate packer packing element of snapback of the invention；

Fig. 2 is the main view of the first bracket of the invention；

Fig. 3 is the left view of Fig. 2；

Fig. 4 is the main view of second of bracket of the invention；

Fig. 5 is circle distribution schematic diagram of the bracket in packing element；

Fig. 6 is packing element of the present invention in hydraulic control packer implementation diagram；

Fig. 7 is packing element of the present invention in hydraulic packer implementation diagram.

In figure: 1- vulcanizes top connection, 2- upper spring, 3- packing element, 4- upper piston, 5- bracket, 6- lower piston, spring under 7-, 8- vulcanizes lower contact；

101, upper piston chamber；102, sealing ring；301, vulcanize annular groove；401, sealing ring；402, upper piston is got out of a predicament or an embarrassing situation cylinder； 501, frame board；502, base shaft；503, step brace；504 vulcanization holes；505, straight brace.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

Fig. 1 to Fig. 5 is please referred to, the present invention provides a kind of technical solution: a kind of amplificate packer packing element of snapback, packet Packing element 3 is included, further includes bracket assembly, bracket return driving mechanism, the upper end connection vulcanization top connection 1 of the packing element, lower end connects Vulcanization lower contact 8 is connect, the bracket return driving mechanism includes upper bracket return driving mechanism, lower bracket return driving mechanism, The bracket assembly includes the bracket 5 that at least three equal angles are arranged in inside packing element, and the bracket includes frame board 501, base Bar 502, brace, the frame board vulcanization are embedded in packing element, and the brace is located in packing element inner cavity, and brace includes symmetrical Upsloping segment and oblique section are provided in the vulcanization top connection for crowded by base shaft connecting framework plate in the middle part of the brace The upper bracket return driving mechanism that brace upsloping segment diameter inwardly moves is provided in the vulcanization lower contact oblique for crowded brace The lower bracket return driving mechanism that section diameter inwardly moves.The brace is step brace 503 or straight brace 505, step brace packet Include the oblique section of top bar and oblique section of getting out of a predicament or an embarrassing situation, straight brace includes upper straight tiltedly section and lower straight oblique section.The sulphur of the frame board setting rectangle Change hole 504.The vulcanization top connection outer wall, vulcanization lower contact outer wall open up vulcanization annular groove, vulcanize annular groove and packing element vulcanization exists Together.

The upper bracket return driving mechanism includes that upper piston 4, upper spring 2, upper piston are got out of a predicament or an embarrassing situation cylinder 402, the sulphur Change top connection and open up upper piston chamber, upper piston 4 is installed in upper piston chamber and upper spring 2, the upper piston and upper piston chamber pass through Sealing ring sealing, described only one lower port of upper piston chamber, the lower port are up connected to upper piston lower end surface, connect down End in contact under logical packing element inner cavity, the upper piston upper end and upper spring, upper piston lower end connection upper piston are got out of a predicament or an embarrassing situation cylinder 402, It is got out of a predicament or an embarrassing situation cylinder axial movement by upper piston, the upper piston crowded brace upsloping segment diameter of cylinder inner wall of getting out of a predicament or an embarrassing situation inwardly moves, brace Upsloping segment rapidly radially bounces back with frame board and packing element.

The lower bracket return driving mechanism includes lower piston 6, lower spring 7, lower piston top bar cylinder, under the vulcanization Connector opens up lower piston chamber, installs lower piston in lower piston chamber and lower spring, the lower piston and lower piston chamber pass through sealing ring Sealing, described only one upper port of lower piston chamber, the upper port are connected to lower piston upper surface down, are up connected to packing element Inner cavity, the lower piston lower end are contacted with lower spring upper end, and lower piston upper end connects lower piston top bar cylinder, pass through lower piston The axial movement of top bar cylinder, oblique section of diameter of the crowded brace of lower piston top bar cylinder inner wall inwardly move, oblique section of brace with Frame board and packing element rapidly radially bounce back.