CN212479154U - Inner back ring for oil well completion - Google Patents
Inner back ring for oil well completion Download PDFInfo
- Publication number
- CN212479154U CN212479154U CN202021143450.3U CN202021143450U CN212479154U CN 212479154 U CN212479154 U CN 212479154U CN 202021143450 U CN202021143450 U CN 202021143450U CN 212479154 U CN212479154 U CN 212479154U
- Authority
- CN
- China
- Prior art keywords
- wall
- oil well
- well completion
- cockscomb structure
- center tube
- 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
Links
- 239000003129 oil well Substances 0.000 title claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 241000561734 Celosia cristata Species 0.000 abstract description 15
- 210000001520 comb Anatomy 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
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- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The utility model belongs to the technical field of oil well completion accessory technique and specifically relates to an interior back of body circle for oil well completion, including the top connection, the fixed toper cover that is provided with in top connection bottom is provided with the cockscomb structure annular on the toper cover inner wall, is provided with array sealing ring on the top connection inner wall. The utility model discloses in, through setting up the sealing ring on the inner wall of upper joint, increase the leakproofness of back of the body circle and center tube, through set up the cockscomb structure annular on toper cover inner wall, this cockscomb structure annular is connected with the cockscomb structure interlock on center tube surface, strengthens the firm degree of back of the body circle on the center tube, suitable using widely.
Description
Technical Field
The utility model relates to an oil well completion accessory technical field specifically is an interior back of body circle for oil well completion.
Background
When the oil and gas well is in the later operation of well cementing and completion, a liner hanger is usually needed to be used for liner suspension or interlayer packing, the conventional liner hanger inner back ring is mostly fixed on a central pipe only by fixing pieces such as fixing rivets, and the fixation is not firm enough, so that the inner back ring for oil completion is provided aiming at the problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an inner back ring for oil well completion through setting up the sealing ring on the inner wall of upper joint, increases the leakproofness of inner back ring and center tube, through set up the cockscomb structure annular on toper cover inner wall, and this cockscomb structure annular is connected with the cockscomb structure interlock on center tube surface, strengthens the firm degree of inner back ring on the center tube to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides an interior back of body circle for oil well completion, includes the top connection, the fixed toper cover that is provided with in top connection bottom, be provided with the cockscomb structure annular on the toper cover inner wall, be provided with several groups sealing ring on the top connection inner wall.
Preferably, the sealing ring is fixedly arranged in a sealing ring groove in the upper joint.
Preferably, the included angle between the upper side of the sawtooth-shaped ring groove and the inner wall of the conical sleeve is 90 degrees.
Preferably, the included angle between the lower side of the serrated ring groove and the inner wall of the conical sleeve is 35-45 degrees.
Compared with the prior art, the beneficial effects of the utility model are that: through set up the sealing ring on the inner wall of upper joint, increase the leakproofness of interior back of the body circle and center tube, through set up the cockscomb structure annular on toper cover inner wall, this cockscomb structure annular is connected with the cockscomb structure interlock on center tube surface, strengthens the firm degree of interior back of the body circle on the center tube.
Drawings
FIG. 1 is a schematic view of the overall structure of an inner back ring for oil completion of the present invention;
fig. 2 is the utility model relates to an interior back of body circle cross-sectional structure schematic diagram is used in oil well completion.
In the figure: 1. an upper joint; 2. a conical sleeve; 3. a serrated ring groove; 4. and (4) a sealing ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
Referring to fig. 1-2, the present invention provides a technical solution:
the utility model provides an inner back ring for oil well completion, includes top connection 1, and 1 bottom of top connection is fixed and is provided with toper cover 2, is provided with cockscomb structure annular 3 on 2 inner walls of toper cover, is provided with several groups sealing ring 4 on 1 inner wall of top connection.
Wherein, the sealing ring 4 is fixedly arranged in a sealing ring groove inside the upper joint 1.
Wherein, the included angle between the upper side of the serrated ring groove 3 and the inner wall of the conical sleeve 2 is 90 degrees.
Wherein, the included angle between the lower side of the serrated ring groove 3 and the inner wall of the conical sleeve 2 is 35-45 degrees.
The working principle is as follows: through set up the sealing ring on the inner wall of upper joint, increase the leakproofness of interior back of the body circle and center tube, through set up the cockscomb structure annular on toper cover inner wall, this cockscomb structure annular is connected with the cockscomb structure interlock on center tube surface, strengthens the firm degree of interior back of the body circle on the center tube.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. An inner back ring for oil well completion, which comprises an upper joint (1) and is characterized in that: the sealing device is characterized in that a conical sleeve (2) is fixedly arranged at the bottom of the upper joint (1), a serrated annular groove (3) is formed in the inner wall of the conical sleeve (2), and a plurality of groups of sealing rings (4) are arranged on the inner wall of the upper joint (1).
2. The inner back ring for oil well completion according to claim 1, wherein: and the sealing ring (4) is fixedly arranged in a sealing ring groove in the upper joint (1).
3. The inner back ring for oil well completion according to claim 1, wherein: the included angle between the upper side of the serrated ring groove (3) and the inner wall of the conical sleeve (2) is 90 degrees.
4. The inner back ring for oil well completion according to claim 1, wherein: the included angle between the lower side of the serrated ring groove (3) and the inner wall of the conical sleeve (2) is 35-45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021143450.3U CN212479154U (en) | 2020-06-19 | 2020-06-19 | Inner back ring for oil well completion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021143450.3U CN212479154U (en) | 2020-06-19 | 2020-06-19 | Inner back ring for oil well completion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212479154U true CN212479154U (en) | 2021-02-05 |
Family
ID=74413060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021143450.3U Expired - Fee Related CN212479154U (en) | 2020-06-19 | 2020-06-19 | Inner back ring for oil well completion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212479154U (en) |
-
2020
- 2020-06-19 CN CN202021143450.3U patent/CN212479154U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20210205 |