CN202360057U - Leather cup packer - Google Patents
Leather cup packer Download PDFInfo
- Publication number
- CN202360057U CN202360057U CN 201120397041 CN201120397041U CN202360057U CN 202360057 U CN202360057 U CN 202360057U CN 201120397041 CN201120397041 CN 201120397041 CN 201120397041 U CN201120397041 U CN 201120397041U CN 202360057 U CN202360057 U CN 202360057U
- Authority
- CN
- China
- Prior art keywords
- leather cup
- assembly
- cup
- wall
- sleeve
- 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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- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The utility model discloses a leather cup packer, including a central pipe assembly, a leather cup assembly covering over an outer wall of the central pipe assembly and a setting assembly located under the leather cup. The setting assembly comprises a fixedly sleeved lower cylinder sleeve, a circular groove with an opening towards the upper side disposed round between the lower cylinder sleeve and the outer wall of the central pipe assembly, a setting piston sealed and slidably disposed in the circular groove, a sliding sleeve pressedly disposed on an upper end of the setting piston, wherein an upper end of the sliding sleeve pressedly matches with the leather cup by a taper sleeve slidably disposed outside the central pipe assembly, a circular conical surface gradually reduced towards the upper side of an axial direction and able to be inserted into the leather cup and disposed on the upper end of the taper sleeve, a pressure-transmitting hole disposed in a sidewall of the central pipe assembly corresponding to the pressure face of the lower end of the setting piston and through the inner and outer surfaces of the wall, a return spring top-mounted between the sliding sleeve and the central pipe assembly. The leather cup packer in the utility model having a simple structure can effectively prevent the damage of the leather cup through friction and overcome the defect of prior art, and setting and releasing are flexible and use is convenient and reliable.
Description
Technical field
The utility model belongs to the oilfield exploitation technical field, and definite saying so relates to a kind of cup packer that is used for process pipe strings such as full well pressure break, acidifying, polymer injection.
Background technology
In process pipe strings such as full well pressure break, acidifying, polymer injection, all need be connected in series packer, each interval is separated.At present each oil field packer commonly used mainly contains Y221 packer, Y341 packer and self-sealing cup packer etc., but adopts the tubing string of Y221 packer can't anti-flushing well, defective such as adopts the tubing string of Y341 packer to occur easily closing not Shang perhaps to be not closed completely; And the self-styled leather cup employing of installing on the self-sealing cup packer is the taper leather cup; It is self-styled by the hydraulic control realization to both sides about the leather cup, but this self-sealing cup packer is in the process of going into the well, because the outward flange of self-styled leather cup is close to internal surface of sleeve pipe; When running into the internal surface of sleeve pipe burr; Be prone to damage self-styled leather cup, thereby influence sealing, and this self-sealing cup packer opens because of leather cup; Thereby cause premature setting easily, influence underground work.
The utility model content
The purpose of the utility model is: a kind of cup packer is provided, to solve the problem that the leather cup on the packer damages easily that has now in the process of going into the well.
The technical scheme of the utility model is: a kind of cup packer; Comprise the central tube assembly and be sleeved on the leather cup assembly on the central tube assembly outer wall; Described leather cup assembly comprises leather cup seat and leather cup, and the top of leather cup is inlaid in the leather cup seat, sets assembly being positioned at also to be arranged with on the central tube assembly outer wall of leather cup bottom; The described assembly that sets comprises the fixedly following cylinder sleeve of suit; Be arranged with opening annular groove up between cylinder sleeve and the central tube assembly outer wall down, the sealing slip is equipped with one and sets piston in the annular groove, and the upper end roof pressure that sets piston is equipped with a sliding sleeve; The upper end of sliding sleeve cooperates with the leather cup roof pressure through the tapered sleeve of slidable fit outside the central tube assembly; Annular conical surface is upwards dwindled in corresponding being provided with axially gradually between tapered sleeve upper end and leather cup lower end, on the central tube assembly sidewall corresponding with setting piston lower end pressure-bearing surface, offers the pressure transmission hole that runs through the internal and external walls face, between sliding sleeve and central tube assembly, also is top-loaded with back-moving spring.
Be adhesively fixed between the upper end of described leather cup and the leather cup seat.
Described central tube assembly comprises top connection, upper center tube, lower center tube and the lower contact that connects successively, and the lower center tube upper end is assemblied in the upper center tube through the external screw thread sealing, and described back-moving spring top is contained between the inwall of upper center tube lower end and sliding sleeve.
Also rotation has the adjustable ring of joining with leather cup seat top on the outer wall of said top connection lower end.
Between said adjustable ring and top connection, radially be equipped with the anti-rotation pin.
Described liner packing spinning down is on the lower contact outer wall.
The internal thread spinning is passed through on the outer wall of tapered sleeve in described sliding sleeve upper end.
Leather cup is close on the outer wall of central tube assembly in the process of going into the well all the time in the utility model; Avoid and the internal surface of sleeve pipe friction; Thereby guaranteed the integrality of leather cup, it has only after packer arrives the precalculated position suppresses through oil pipe again, and hydraulic pressure promotes to set piston stroking upward through pressure transmission hole; Set piston and wedge in the leather cup through the annular conical surface of corresponding settings between tapered sleeve and the leather cup, be close to the internal surface of sleeve pipe realization and set thereby leather cup swollen through sliding sleeve and tapered sleeve; And after the oil jacket pressure balance, in the elastic force of back-moving spring and leather cup, receive under the elastic force acting in conjunction, forcing tapered sleeve, sliding sleeve and set descent of piston, leather cup breaks away from casing wall and has realized reliable recovery.The utility model simple in structure, effectively prevented leather cup with through frictionally damage, set with deblocking flexibly, easy to use and reliable, overcome the defective of prior art.
Description of drawings
Fig. 1 is the structural representation of the utility model cup packer specific embodiment.
The specific embodiment
The specific embodiment of the cup packer of utility model is as shown in Figure 1; It comprises the central tube assembly and is sleeved on the leather cup assembly on the central tube assembly outer wall and sets assembly; Wherein, the central tube assembly mainly is made up of top connection 1, upper center tube 7, lower center tube 12 and lower contact 16, and top connection is installed on the upper center tube 7 through internal thread; Upper center tube 7 lower ends are installed on the lower center tube 12 through internal thread, and lower contact 16 is installed in lower center tube 12 lower ends through internal thread.The leather cup assembly is made up of leather cup seat 5 and leather cup 6, in the taper type annular groove on the upper end of leather cup 6 is inlaid in leather cup seat 5 lower ends, and is adhesively fixed with leather cup seat 5 through sulfuration process and is connected.Set assembly mainly by tapered sleeve 9, sliding sleeve 11, back-moving spring 13, cylinder sleeve 14 and set piston 15 and form down; The internal thread spinning is passed through outside upper center tube 7 in top connection 1 lower end; O RunddichtringO 4 sealings that leather cup seat 5 is established through ring on the inner wall surface thereof are slidedly assemblied on upper center tube 7 outer walls; Be positioned at the junction of upper center tube 7 at top connection 1 lower end outer wall and through external thread rotary adjustable ring 2 be housed, these adjustable ring 2 lower ends cooperate with leather cup seat 5 roof pressures.Tapered sleeve 9 slidable fit are outside upper center tube 7; The upper end of tapered sleeve 9 is provided with the diminishing annular conical surface that axially makes progress; The corresponding inner conical surface that is provided with tapered sleeve 9 corresponding matching in leather cup 6 lower ends; It is inboard and cooperate with leather cup 6 roof pressures that the annular conical surface of tapered sleeve 9 upper ends through the correspondence setting is inserted into leather cup 6 lower ends; The upper end of sliding sleeve 11 on the outer wall of tapered sleeve 9 bottoms, surrounds toroidal cavity through the internal thread spinning between the lower surface of the outer wall of sliding sleeve 11 inwalls and last lower center tube 7,12 and tapered sleeve 9, be positioned in the cavity on lower center tube 12 outer walls to be set with back-moving spring 13; Pad 10 roof pressures that the upper end of back-moving spring 13 is passed through to be provided with are in the lower end of upper center tube 7 and tapered sleeve 9, and join on the inwall of the lower end of back-moving spring 13 and sliding sleeve 11 top.Following cylinder sleeve 14 seals spinning on lower contact 16 outer walls through internal thread; Between the outer wall of following cylinder sleeve 14 and lower center tube 12, surround opening annular groove up; Set piston 15 and be slidedly assemblied in this annular groove through O RunddichtringO sealing corresponding sheathed on the inwall outside wall surface, this upper end roof pressure that sets piston 15 is connected the lower end of sliding sleeve 11.Excavation is provided with pressure-bearing surface on the contact surface that sets piston 15 lower ends and lower center tube 12 outer walls, to offering the pressure transmission hole that runs through the internal and external walls face on lower center tube 12 sidewalls at pressure-bearing surface place.
During use; This cup packer is serially connected in the tubing string, and in the process of going into the well, leather cup 6 is close on the outer wall of upper center tube 7; Avoid and the internal surface of sleeve pipe friction; When under the packer behind the precalculated position, through suppressing in the oil pipe, hydraulic pressure acts on through pressure transmission hole and promotes on the pressure-bearing surface that sets piston 15 lower ends to set piston about in the of 15; Set piston 15 and promote tapered sleeve 9 up annular conical surface wedging leather cup 6 inboards, thereby cooperate realization to set with internal surface of sleeve pipe leather cup 6 distendings through cooperating with leather cup 6 through the elastic force that sliding sleeve 11 overcomes back-moving spring 13.After the oil jacket pressure balance, it is descending that back-moving spring 13 promotes sliding sleeve 11, and sliding sleeve 11 drives tapered sleeve 9 and promotes to set 15 times horizontal resets of piston; Simultaneously; It is descending that leather cup 6 also promotes tapered sleeve 9 through self elastic force through annular conical surface, and leather cup 6 withdrawals break away from internal surface of sleeve pipe, realize deblocking.
Claims (7)
1. cup packer; Comprise the central tube assembly and be sleeved on the leather cup assembly on the central tube assembly outer wall, described leather cup assembly comprises leather cup seat and leather cup, and the top of leather cup is inlaid in the leather cup seat; It is characterized in that; Set assembly being positioned at also to be arranged with on the central tube assembly outer wall of leather cup bottom, the described assembly that sets comprises the fixedly following cylinder sleeve of suit, is being arranged with opening annular groove up between cylinder sleeve and the central tube assembly outer wall down; The sealing slip is equipped with one and sets piston in the annular groove; The upper end roof pressure that sets piston is equipped with a sliding sleeve, and the upper end of sliding sleeve cooperates with the leather cup roof pressure through the tapered sleeve of slidable fit outside the central tube assembly, is provided with in the tapered sleeve upper end axially upwards to dwindle gradually to be inserted into the inboard annular conical surface of leather cup; On the central tube assembly sidewall corresponding, offer the pressure transmission hole that runs through the internal and external walls face, between sliding sleeve and central tube assembly, also be top-loaded with back-moving spring with setting piston lower end pressure-bearing surface.
2. cup packer according to claim 1 is characterized in that, is adhesively fixed between the upper end of described leather cup and the leather cup seat.
3. cup packer according to claim 1; It is characterized in that; Described central tube assembly comprises top connection, upper center tube, lower center tube and the lower contact that connects successively; The lower center tube upper end is assemblied in the upper center tube through the external screw thread sealing, and described back-moving spring top is contained between the inwall of upper center tube lower end and sliding sleeve.
4. cup packer according to claim 3 is characterized in that, also rotation has the adjustable ring of joining with leather cup seat top on the outer wall of said top connection lower end.
5. cup packer according to claim 4 is characterized in that, between said adjustable ring and top connection, radially is equipped with the anti-rotation pin.
6. cup packer according to claim 3 is characterized in that, described liner packing spinning down is on the lower contact outer wall.
7. cup packer according to claim 1 is characterized in that, the internal thread spinning is passed through on the outer wall of tapered sleeve in described sliding sleeve upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120397041 CN202360057U (en) | 2011-10-18 | 2011-10-18 | Leather cup packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120397041 CN202360057U (en) | 2011-10-18 | 2011-10-18 | Leather cup packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202360057U true CN202360057U (en) | 2012-08-01 |
Family
ID=46571249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120397041 Expired - Fee Related CN202360057U (en) | 2011-10-18 | 2011-10-18 | Leather cup packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202360057U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105625980A (en) * | 2015-05-16 | 2016-06-01 | 盐城市畅海精密机械有限公司 | Non-throttling Y344 type fracturing set packer |
| CN110552654A (en) * | 2018-06-01 | 2019-12-10 | 中国石油化工股份有限公司 | Hydraulic control deblocking type leather cup packer |
-
2011
- 2011-10-18 CN CN 201120397041 patent/CN202360057U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105625980A (en) * | 2015-05-16 | 2016-06-01 | 盐城市畅海精密机械有限公司 | Non-throttling Y344 type fracturing set packer |
| CN110552654A (en) * | 2018-06-01 | 2019-12-10 | 中国石油化工股份有限公司 | Hydraulic control deblocking type leather cup packer |
| CN110552654B (en) * | 2018-06-01 | 2021-07-27 | 中国石油化工股份有限公司 | Hydraulic control deblocking type leather cup 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20171018 |