CN214498990U - Packer convenient to maintain - Google Patents
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- CN214498990U CN214498990U CN202023283710.XU CN202023283710U CN214498990U CN 214498990 U CN214498990 U CN 214498990U CN 202023283710 U CN202023283710 U CN 202023283710U CN 214498990 U CN214498990 U CN 214498990U
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- 238000012856 packing Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 25
- 238000012423 maintenance Methods 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a packer convenient to maintain, including top connection, go up the cartridge holder, the packing element, lower cartridge holder, lower clutch and center tube, all be provided with the external screw thread structure on the upper end outer wall of top connection and on the lower extreme outer wall of lower clutch, the top connection includes upper thread pipe portion and upper bushing portion, the inside of upper thread pipe portion and upper bushing portion is linked together, upper bushing portion cover is located the upper end of center tube, be provided with three at least upper connecting through-holes on the outer wall of upper bushing portion, be provided with a plurality of upper screw holes on the upper end outer wall of center tube along its circumferencial direction, and upper screw hole and upper connecting through-hole one-to-one set up, upper bushing portion links to each other through a plurality of upper fixing bolt with the center tube, upper fixing bolt one-to-one installs in upper screw hole; the structure of the lower joint is the same as that of the upper joint; the utility model discloses when the top connection and lower hair take place to damage, can conveniently change, whole change process just can accomplish in a few minutes, can not influence the normal use of whole packer.
Description
Technical Field
The utility model relates to a packer field specifically is a packer of convenient maintenance.
Background
A packer refers to a downhole tool having an elastomeric sealing element whereby the annulus between the string of tubing and the wellbore and between the strings of tubing of various sizes is sealed off and the producing zone isolated to control production and protect the casing. The common rubber sleeve expansion type packer seals oil and a casing annular space through outward expansion of a rubber sleeve, and comprises an upper joint, an upper rubber sleeve seat, the rubber sleeve, a lower rubber sleeve seat, a lower joint and a central tube, wherein the upper joint and the lower joint are respectively arranged at the upper end and the lower end of the central tube, the upper rubber sleeve seat, the rubber sleeve and the lower rubber sleeve seat are all in a cylindrical structure and are all sleeved outside the central tube, and the upper end and the lower end of the rubber sleeve are respectively fixed on the outer wall of the central tube through a vulcanization core by the upper rubber sleeve seat and the lower rubber sleeve seat.
The upper joint and the lower joint are connected with the upper oil pipe and the lower oil pipe as required, so that the upper joint and the lower joint are usually provided with thread structures, and for the upper joint and the lower joint which are provided with the external thread structures, the external thread structures not only can cause damage due to installation faults in the using process, but also are very easy to damage due to collision of foreign objects, and when the thread structures are damaged, the maintenance is very troublesome, and the normal use of the whole packer is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a packer of convenient maintenance can improve current packing element expanding packer because of the maintenance external screw thread structure on top connection and the lower clutch is very troublesome, leads to influencing the problem of whole packer normal use.
The utility model discloses a realize like this: a packer convenient to maintain comprises an upper joint, an upper rubber sleeve seat, a rubber sleeve, a lower rubber sleeve seat, a lower joint and a central tube, wherein external thread structures are arranged on the outer wall of the upper end of the upper joint and the outer wall of the lower end of the lower joint respectively; the structure of the lower joint is the same as that of the upper joint, the lower joint comprises a lower threaded pipe part and a lower sleeve part, the interiors of the lower threaded pipe part and the lower sleeve part are communicated, the inner diameter of the lower sleeve part is the same as the outer diameter of the central pipe, the lower sleeve part is sleeved at the lower end of the central pipe, at least three lower connecting through holes are formed in the outer wall of the lower sleeve part, a plurality of lower threaded holes are formed in the outer wall of the lower end of the central pipe along the circumferential direction of the outer wall, the lower threaded holes and the lower connecting through holes are arranged in a one-to-one correspondence mode, the lower sleeve part and the central pipe are connected through a plurality of lower fixing bolts, and the lower fixing bolts are arranged in the lower threaded holes in a one-to-one correspondence mode; an upper positioning structure which is matched with each other is arranged between the upper end of the central pipe and the upper sleeve part, and the upper threaded holes and the upper connecting through holes are in one-to-one correspondence under the action of the upper positioning structure; and lower positioning structures which are matched with each other are arranged between the lower end of the central tube and the lower sleeve part, and the lower threaded holes are in one-to-one correspondence with the lower connecting through holes under the action of the lower positioning structures.
Furthermore, the upper positioning structure comprises an upper groove formed in the side wall of the upper end of the central tube and an upper convex strip portion formed on the inner wall of the upper sleeve portion, the length direction of the upper groove is along the axial direction of the central tube, the length direction of the upper convex strip portion is along the axial direction of the upper sleeve portion, and when the upper convex strip portion is inserted into the upper groove, the upper threaded holes correspond to the upper connecting through holes one to one.
Furthermore, an upper circular groove is formed in the upper end face of the central pipe, an upper sealing ring is arranged in the upper circular groove, and the upper sealing ring forms sealing between the upper end of the central pipe and the top wall of the inner hole of the upper sleeve part.
Further, the lower positioning structure comprises a lower groove formed in the side wall of the lower end of the center pipe and a lower convex portion arranged on the inner wall of the lower sleeve portion, the length direction of the lower groove is along the axial direction of the center pipe, the length direction of the lower convex portion is along the axial direction of the lower sleeve portion, and when the lower convex portion is inserted into the lower groove, the lower threaded holes correspond to the lower connecting through holes one to one.
Further, be provided with down the ring form groove on the lower terminal surface of center tube, be provided with lower sealing washer down in the ring form groove, lower sealing washer forms sealedly between the lower extreme of center tube and the diapire of lower sleeve pipe portion hole.
Furthermore, the upper connecting through hole is a two-stage stepped cylindrical through hole, the section of the upper connecting through hole is T-shaped, and the head of the upper fixing bolt is completely positioned in the large-diameter hole of the upper connecting through hole; the lower connecting through hole is a two-stage stepped cylindrical through hole, the cross section of the lower connecting through hole is T-shaped, and the head of the lower fixing bolt is completely positioned in a large-diameter hole of the lower connecting through hole.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses when the top connection and lower hair take place to damage, can conveniently change, whole change process just can accomplish in a few minutes, can not influence the normal use of whole packer.
2. An upper annular groove is formed in the upper end face of the central pipe, an upper sealing ring is arranged in the upper annular groove, and the upper sealing ring forms sealing between the upper end of the central pipe and the top wall of the inner hole of the upper sleeve part. Similarly, a lower annular groove is formed in the lower end face of the central pipe, a lower sealing ring is arranged in the lower annular groove, and the lower sealing ring forms sealing between the lower end of the central pipe and the bottom wall of the inner hole of the lower sleeve pipe portion. The problem of oil leakage between the central pipe and the upper joint and between the central pipe and the lower joint cannot occur under the action of the upper sealing ring and the lower sealing ring.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic perspective view of a packer of the present invention for easy maintenance;
FIG. 2 is a schematic perspective view of an upper joint of the packer of the present invention for easy maintenance;
FIG. 3 is a front view of the upper sub of a packer of the present invention for ease of servicing;
fig. 4 is a top view of the center tube of a packer of the present invention for ease of maintenance.
In the figure: 1. an upper joint; 101. an upper threaded tubular portion; 102. an upper sleeve portion; 103. an upper connecting through hole; 104. an upper convex portion; 2. an upper rubber cylinder seat; 3. a rubber cylinder; 4. a lower rubber cylinder seat; 5. a lower joint; 6. a central tube; 601. an upper groove; 602. an upper annular groove; 7. an upper fixing bolt; 8. and a lower fixing bolt.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the terms in the present invention can be understood according to the specific situation by those skilled in the art.
Referring to fig. 1, 2, 3 and 4, a packer convenient to maintain comprises an upper joint 1, an upper rubber cylinder seat 2, a rubber cylinder 3, a lower rubber cylinder seat 4, a lower joint 5 and a central pipe 6, wherein outer thread structures are arranged on the outer wall of the upper end of the upper joint 1 and the outer wall of the lower end of the lower joint 5.
The upper joint 1 comprises an upper threaded pipe part 101 and an upper sleeve part 102, the inner parts of the upper threaded pipe part 101 and the upper sleeve part 102 are communicated, the inner diameter of the upper sleeve part 102 is the same as the outer diameter of the central pipe 6, the upper sleeve part 102 is sleeved on the upper end of the central pipe 6, six upper connecting through holes 103 are formed in the outer wall of the upper sleeve part 102, six upper threaded holes are formed in the outer wall of the upper end of the central pipe 6 along the circumferential direction of the upper threaded holes, the upper threaded holes and the upper connecting through holes 103 are arranged in a one-to-one correspondence mode, the upper sleeve part 102 is connected with the central pipe 6 through a plurality of upper fixing bolts 7, and the upper fixing bolts 7 are arranged in the upper threaded holes in a one-to-one correspondence mode. An upper positioning structure which is matched with each other is arranged between the upper end of the central tube 6 and the upper sleeve part 102, the upper positioning structure comprises an upper groove 601 which is arranged on the side wall of the upper end of the central tube 6 and an upper convex strip 104 which is arranged on the inner wall of the upper sleeve part 102, the length direction of the upper groove 601 is along the axial direction of the central tube 6, the length direction of the upper convex strip 104 is along the axial direction of the upper sleeve part 102, and when the upper convex strip 104 is inserted into the upper groove 601, the upper threaded holes are in one-to-one correspondence with the upper connecting through holes 103.
The structure of lower clutch 5 is the same with top connection 1, lower clutch 5 includes lower thread tube portion and lower sleeve portion, the inside of lower thread tube portion and lower sleeve portion is linked together, the internal diameter of lower sleeve portion is the same with the external diameter of center tube 6, the lower extreme of center tube is located to lower sleeve portion cover, be provided with six down connect the via hole on the outer wall of lower sleeve portion, be provided with six down screw holes along its circumferencial direction on the lower extreme outer wall of center tube 6, and screw hole and lower connect the via hole one-to-one setting down, lower sleeve portion links to each other through a plurality of fixing bolt 8 down with center tube 6, the installation of lower fixing bolt 8 one-to-one is in the screw hole down. The lower locating structure comprises a lower groove formed in the side wall of the lower end of the central pipe 6 and a lower convex portion arranged on the inner wall of the lower sleeve portion, the length direction of the lower groove is along the axial direction of the central pipe 6, the length direction of the lower convex portion is along the axial direction of the lower sleeve portion, and when the lower convex portion is inserted into the lower groove, the lower threaded holes are in one-to-one correspondence with the lower connecting through holes.
The utility model discloses a theory of operation: when the external thread structure on the top connection 1 damaged, unscrewed each fixing bolt 7, can pull down the top connection 1 that damages by the upper end of center tube 6, install new top connection 1 in the upper end of center tube 6 and can accomplish the change of top connection 1. Similarly, the lower joint 5 is replaced. The whole replacement process can be completed within a few minutes, and the normal use of the whole packer can not be influenced.
The upper joint 1 and the lower joint 5 which are replaced can be taken to a maintenance workshop for maintenance, and the single upper joint 1 and the single lower joint 5 are more convenient to repair welding and thread turning maintenance.
Referring to fig. 4, an upper annular groove 602 is formed on the upper end surface of the central tube 6, an upper sealing ring is disposed in the upper annular groove 602, and the upper sealing ring forms a seal between the upper end of the central tube 6 and the top wall of the inner hole of the upper sleeve portion 102. Similarly, a lower annular groove is formed in the lower end face of the central tube 6, a lower sealing ring is arranged in the lower annular groove, and the lower sealing ring forms sealing between the lower end of the central tube 6 and the bottom wall of the inner hole of the lower sleeve part. The problem of oil leakage between the central pipe 6 and the upper joint 1 and the lower joint 5 can not occur under the action of the upper sealing ring and the lower sealing ring.
Referring to fig. 1 and 2, the upper connecting through hole 103 is a two-step cylindrical through hole, the cross section of which is T-shaped, the upper fixing bolt 7 is a hexagon socket head cap bolt, and the head of the upper fixing bolt 7 is completely located in the large-diameter hole of the upper connecting through hole 103. The lower connecting through hole is a two-stage stepped cylindrical through hole, the section of the lower connecting through hole is T-shaped, the lower fixing bolt 8 also uses an inner hexagon bolt, and the head of the lower fixing bolt 8 is completely positioned in a large-diameter hole of the lower connecting through hole. So set up for go up fixing bolt 7 and lower fixing bolt 8 can not influence the use of going into the well of packer.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a packer of convenient maintenance, includes top connection (1), goes up packing element seat (2), packing element (3), lower packing element seat (4), lower clutch (5) and center tube (6), all be provided with external screw thread structure on the upper end outer wall of top connection (1) and on the lower extreme outer wall of lower clutch (5), its characterized in that, top connection (1) includes upper thread pipe portion (101) and upper sleeve portion (102), the inside of upper thread pipe portion (101) and upper sleeve portion (102) is linked together, the internal diameter of upper sleeve portion (102) is the same with the external diameter of center tube (6), the upper end of center tube (6) is located to upper sleeve portion (102) cover, be provided with on the outer wall of upper sleeve portion (102) connect through-hole (103) on at least three, be provided with a plurality of screw holes on the upper end outer wall of center tube (6) along its circumferencial direction, the upper threaded holes and the upper connecting through holes (103) are arranged in a one-to-one correspondence manner, the upper sleeve part (102) is connected with the central pipe (6) through a plurality of upper fixing bolts (7), and the upper fixing bolts (7) are arranged in the upper threaded holes in a one-to-one correspondence manner; the structure of the lower joint (5) is the same as that of the upper joint (1), the lower joint (5) comprises a lower threaded pipe part and a lower sleeve part, the interiors of the lower threaded pipe part and the lower sleeve part are communicated, the inner diameter of the lower sleeve part is the same as the outer diameter of the central pipe (6), the lower sleeve part is sleeved at the lower end of the central pipe, at least three lower connecting through holes are formed in the outer wall of the lower sleeve part, a plurality of lower threaded holes are formed in the outer wall of the lower end of the central pipe (6) along the circumferential direction of the central pipe, the lower threaded holes and the lower connecting through holes are arranged in a one-to-one correspondence mode, the lower sleeve part is connected with the central pipe (6) through a plurality of lower fixing bolts (8), and the lower fixing bolts (8) are arranged in the lower threaded holes in a one-to-one correspondence mode; an upper positioning structure which is matched with each other is arranged between the upper end of the central pipe (6) and the upper sleeve part (102), and under the action of the upper positioning structure, the upper threaded holes are in one-to-one correspondence with the upper connecting through holes (103); and a lower positioning structure matched with each other is arranged between the lower end of the central pipe (6) and the lower sleeve part, and the lower threaded holes and the lower connecting through holes are in one-to-one correspondence under the action of the lower positioning structure.
2. A service-friendly packer as claimed in claim 1, wherein the upper positioning structure comprises an upper groove (601) provided on the side wall of the upper end of the central pipe (6) and an upper raised strip (104) provided on the inner wall of the upper sleeve part (102), the length direction of the upper groove (601) is along the axial direction of the central pipe (6), the length direction of the upper raised strip (104) is along the axial direction of the upper sleeve part (102), and when the upper raised strip (104) is inserted into the upper groove (601), the upper threaded holes correspond to the upper connecting through holes (103) one by one.
3. A packer convenient to maintain according to claim 2, characterized in that the upper end surface of the central pipe (6) is provided with an upper annular groove (602), the upper annular groove (602) is provided with an upper sealing ring, and the upper sealing ring forms a seal between the upper end of the central pipe (6) and the top wall of the inner hole of the upper sleeve part (102).
4. A service-friendly packer as claimed in claim 1, wherein the lower locating structure comprises a lower groove provided on the side wall of the lower end of the center pipe (6) and a lower raised strip provided on the inner wall of the lower casing part, the length direction of the lower groove is along the axial direction of the center pipe (6), the length direction of the lower raised strip is along the axial direction of the lower casing part, and when the lower raised strip is inserted into the lower groove, the lower threaded holes correspond to the lower connecting through holes one by one.
5. A packer convenient to maintain as claimed in claim 4, characterized in that a lower annular groove is arranged on the lower end face of the central tube (6), a lower sealing ring is arranged in the lower annular groove, and the lower sealing ring forms a seal between the lower end of the central tube (6) and the bottom wall of the inner hole of the lower sleeve part.
6. A packer convenient to maintain as claimed in any one of claims 1 to 5, wherein the upper connecting through hole (103) is a two-step cylindrical through hole with a T-shaped cross section, and the head of the upper fixing bolt (7) is completely positioned in a large-diameter hole of the upper connecting through hole (103); the lower connecting through hole is a two-stage stepped cylindrical through hole, the cross section of the lower connecting through hole is T-shaped, and the head of the lower fixing bolt (8) is completely positioned in a large-diameter hole of the lower connecting through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023283710.XU CN214498990U (en) | 2020-12-30 | 2020-12-30 | Packer convenient to maintain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023283710.XU CN214498990U (en) | 2020-12-30 | 2020-12-30 | Packer convenient to maintain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214498990U true CN214498990U (en) | 2021-10-26 |
Family
ID=78213114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023283710.XU Active CN214498990U (en) | 2020-12-30 | 2020-12-30 | Packer convenient to maintain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214498990U (en) |
-
2020
- 2020-12-30 CN CN202023283710.XU patent/CN214498990U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211216 Address after: 163000 north of Xingsheng Road, East trunk line, Honggang District, Daqing City, Heilongjiang Province Patentee after: Daqing xinguangyao Petroleum Machinery Manufacturing Co.,Ltd. Address before: Harbin Petroleum Institute, no.297, Songpu Road, Songbei District, Harbin City, Heilongjiang Province, 150028 Patentee before: Tang Ruiming |