CN209761389U - Soluble rubber plug and seat sleeve - Google Patents
Soluble rubber plug and seat sleeve Download PDFInfo
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- CN209761389U CN209761389U CN201920492470.2U CN201920492470U CN209761389U CN 209761389 U CN209761389 U CN 209761389U CN 201920492470 U CN201920492470 U CN 201920492470U CN 209761389 U CN209761389 U CN 209761389U
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- seat
- cover
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Abstract
The utility model belongs to the technical field of well cementation device, concretely relates to soluble plug and seat cover, wherein, the plug includes the stopper body, the surface of stopper body is provided with the rubber plug cover, the rubber plug cover is made by soluble rubber. The seat sleeve comprises a sleeve body, wherein a ball seat used for abutting against a gravity opening plug is arranged on the sleeve body, the ball seat is of an inwards-concave hemispherical structure, and the seat sleeve is made of soluble metal. This plug and seat cover are in second grade cement filling completion back, and the staff can pour into the solution that can dissolve plug and seat cover to the sleeve pipe, and this solution reacts with plug and seat cover, makes plug and seat cover dissolve to realize sheathed tube latus rectum, in order to satisfy the demand of later stage borehole operation, the effectual condition of avoiding secondary well drilling to influence the quality of well cementation takes place.
Description
Technical Field
The utility model belongs to the technical field of well cementation device, concretely relates to soluble plug and seat cover.
Background
When cementing an oil field, a casing needs to be put in according to the well diameter condition of a well, and an opening sleeve for opening a cement injection hole and a closing sleeve for closing the cement injection hole are arranged in the casing; when workers need to fill second-stage cement into the sleeve, the workers need to put gravity into the sleeve to open the plug, the plug is opened through the gravity to drive the opening sleeve to move, and the cement injection hole is opened, so that the second-stage cement can be smoothly filled;
after the second-stage cement is injected into the sleeve, a worker can put a rubber plug into the sleeve, the rubber plug is clamped on the closing sleeve and pressurizes the sleeve, and the rubber plug can drive the closing sleeve to close the cement injection hole under the action of pressure;
after the sleeve is closed and the cement injection hole is closed, a worker must additionally use a small-diameter drill rod, so that the working procedure and the operation time are increased, the equipment investment is increased, the production period of an oil well is prolonged, the oil field production is not facilitated, and meanwhile, the second-stage well cementation section cement solidification can be damaged due to the vibration generated in the drilling and removing process, so that the well cementation quality is influenced. Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a rubber plug and a seat sleeve which can complete well cementation without secondary drilling.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems existing in the prior art, the utility model provides a soluble rubber plug to the cover of closing that exists among the solution prior art need just can dredge sheathed tube technical problem through the mode of secondary well drilling after closing the cement injection hole.
The utility model discloses a following technical scheme specifically realizes:
The soluble rubber plug comprises a plug body, wherein a rubber plug sleeve is arranged on the outer surface of the plug body, and the rubber plug sleeve is made of soluble rubber.
in order to better realize the utility model discloses, do further optimization in above-mentioned structure, the stopper body is the cylinder, just be provided with a plurality of draw-in groove on the circumference lateral wall of stopper body, the plug sheathe in be provided with the convex part that the draw-in groove matches, the plug cover passes through the convex part with the cooperation card of draw-in groove is established on the stopper body.
In order to better realize the utility model, the structure is further optimized, and the rubber plug sleeve is provided with a plurality of rubber plug wings for cleaning the pipe wall.
In order to achieve the above object, the present invention provides a plug for a refrigerator, wherein the plug body has a semi-spherical supporting portion protruding outward at one end thereof.
To better realise the invention, in a further refinement of the above-described construction, the plug body is made of a soluble metal.
In order to better realize the utility model, the structure is further optimized, and the plug body is made of aluminum magnesium alloy
To sum up, the utility model provides a pair of soluble plug has following technological effect:
When the soluble rubber plug is used, a worker can throw the rubber plug into a well and pressurize the well, so that the rubber plug can drive the closing sleeve to close the cement injection hole, and after the well cementation operation is finished, the soluble rubber plug can be automatically dissolved, so that the work of drilling the rubber plug by the worker in a secondary well drilling mode is omitted, the well cementation work is easier, and the quality of well cementation can be effectively prevented from being influenced by secondary well drilling.
Furthermore, the utility model provides a pair of soluble plug's optimization scheme still has following technological effect:
(1) The utility model discloses an optimization scheme is established on the stopper body for the cooperation card that the plug cover passes through convex part and draw-in groove, and the cooperation of this convex part and draw-in groove can make the plug cover inseparabler with the cooperation of stopper body, during this plug drops into the sleeve pipe as the staff to when to the intraductal pressurization of cover, the plug cover can not break away from with the stopper body, thereby the drive that makes this soluble plug can be smooth closes the cover action.
(2) The utility model discloses an optimization scheme is provided with the plug wing on for the plug sheathe in, and this plug wing can scratch the intraductal wall of sleeve to remaining debris on the effectual clearance intraductal wall of sleeve avoids the remaining debris of intraductal wall of sleeve too much and leads to the sleeve pipe to be blockked up the condition emergence.
(3) The utility model discloses an optimization scheme is provided with for the one end of stopper body and supports the portion of establishing, should support the portion of establishing and can support to establish and put in closing, when the staff when the intraductal pressurization of cover, this soluble plug can drive and close the cover motion to make and close that the cover can be smooth and close the cement injection hole, in order to accomplish well cementation work.
The utility model also provides a seat cover, including the cover body, be provided with on the cover body and be used for supporting the ball seat of establishing gravity and opening the stopper, the ball seat is inside sunken semi spherical structure, just the seat cover is made for soluble metal.
In order to achieve the object, the present invention is further optimized in the above structure, and a through hole for installing the pin is provided on the side wall of the sleeve body.
In order to better realize the utility model discloses, do further optimization in above-mentioned structure, be provided with the bump that a plurality of is used for increasing frictional force on the lateral wall of cover body.
In order to realize the present invention, the above structure is further optimized, and the sleeve body is made of an aluminum magnesium alloy.
The utility model provides a pair of seat cover has following technological effect:
After the sleeve is driven to open the cement injection hole in the sleeve, a worker can add electrolyte solution into the sleeve, the sleeve can be automatically dissolved, the gravity opening plug can fall into the shaft bottom, and therefore the gravity opening plug is prevented from being plugged into the sleeve, the worker needs to drill out internal components through a drilling tool, difficulty workload of well cementation work is reduced, and secondary drilling is effectively prevented from affecting well cementation quality.
Drawings
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a soluble rubber plug provided by the present invention;
Fig. 2 is a schematic structural view of a seat cover provided by the present invention;
Fig. 3 is a schematic structural view of a self-bore cement injector according to a third embodiment.
Reference numerals:
1. a sleeve; 2. a plug body; 3. a rubber plug sleeve; 4. a rubber plug wing; 5. a support part; 6. a sleeve body; 7. A ball seat; 8. perforating; 9. a card slot; 10. a convex portion.
Detailed Description
in order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The first embodiment is as follows:
A soluble rubber plug is shown in figures 1 and 3 and comprises a plug body 2, wherein a rubber plug sleeve 3 is arranged on the outer surface of the plug body 2, and the rubber plug sleeve 3 is made of soluble rubber.
Through the soluble rubber plug of the structure, when the soluble rubber plug is used, a worker can throw the rubber plug into a well and pressurize the well, so that the rubber plug can drive the closing sleeve to close a cement injection hole, and after well cementation operation is finished, the soluble rubber plug can be automatically dissolved, so that the work of drilling the rubber plug by the worker in a secondary well drilling mode is omitted, the well cementation work is easier, and the quality of well cementation caused by secondary well drilling can be effectively avoided.
Preferably, the outer side wall of the plug body 2 is provided with a plurality of clamping grooves 9, the inner side wall of the rubber plug sleeve 3 is provided with a plurality of convex parts 10, and the convex parts 10 on the rubber plug sleeve 3 can be clamped in the clamping grooves 9 on the plug body 2, so that the rubber plug sleeve 3 and the plug body 2 are connected more stably through the matching of the clamping grooves 9 and the convex parts 10;
when using this soluble plug, the staff can drop into the pipe box with this soluble plug in, and pressurize in to the pipe box, make this soluble plug can remove to the bottom of sleeve pipe 1, and at the in-process that removes, plug sleeve 3 can contact with the lateral wall of pipe box, and the cooperation of convex part 10 and draw-in groove 9 can effectually avoid plug sleeve 3 and stopper body 2's separation, thereby avoid this soluble plug to lead to its unable drive to close the cover motion because of plug sleeve 3 and stopper body 2's separation, make and close the cover and can not take place the condition that the cement injection hole was closed.
optimized, stopper body 2 is cylindric structure, and draw-in groove 9 then sets up along the circumference lateral wall of stopper body 2, and convex part 10 on the plug cover 3 then with the shape phase-match of draw-in groove 9, make plug cover 3 inseparabler with the cooperation of stopper body 2 to further the condition of avoiding plug cover 3 and stopper body 2 separation takes place, makes the use convenience more of this soluble plug.
Preferably, the rubber plug sleeve 3 is provided with a rubber plug wing 4; when using this soluble plug, the staff puts into the sleeve pipe 1 with the plug to sleeve pipe 1 is inside to exert pressure, makes plug wing 4 can paste the pipe wall downstream of sleeve pipe 1, and the plug is at the in-process that removes, and plug wing 4 can be scraped the mud on the pipe wall of sleeve pipe 1, thereby the effectual debris of remaining on the sleeve pipe 1 inside wall of clearance, avoids leading to the condition emergence that sleeve pipe 1 is blockked up because of the debris in the sleeve pipe 1 is too much.
Optimally, the plug body 2 is provided with a propping part 5, and the shape of the cross section of the propping part is hemispherical; the abutting part 5 is matched with the closing sleeve, so that the soluble rubber plug can be better combined with the closing sleeve to drive the closing sleeve to act.
Preferably, the plug body 2 is made of a soluble metal.
More preferably, the soluble metal is an aluminum magnesium alloy.
Example two:
A sleeve comprises a sleeve body 6, a ball seat 7 for supporting a gravity opening plug is arranged on the sleeve body 6, the ball seat 7 is of an inwards concave hemispherical structure, and the sleeve is made of soluble metal.
After the sleeve is driven to open the cement injection hole in the sleeve, the sleeve can be automatically dissolved, so that the gravity opening plug can fall into the shaft bottom, the gravity opening plug is prevented from being plugged in the sleeve 1, workers need to drill and remove internal components through a drilling tool, the difficulty workload of the well cementation work is reduced, and the secondary drilling is effectively prevented from influencing the well cementation quality.
Preferably, the side wall of the sleeve body 6 is provided with a through hole 8, and the seat sleeve is installed in the opening sleeve and fixed through a pin.
the specific working mode is as follows:
When workers need to fill secondary cement into a well, the workers need to firstly put the gravity opening plug into the sleeve 1, the gravity opening plug can fall on the seat sleeve in the opening sleeve in the downward moving process, at the moment, the workers can pressurize the sleeve 1, the gravity opening plug can drive the seat sleeve and the opening sleeve to move, a cement injection hole is opened, and the workers can fill the secondary cement; in order to avoid the situation that the gravity opening plug and the seat sleeve are blocked in the sleeve 1, a worker can fill solution into the sleeve 1, so that the seat sleeve can be dissolved in electrolyte solution, and after the seat sleeve is dissolved, the gravity opening plug is not restrained by the seat sleeve and directly falls to the bottom of the sleeve 1, so that the situation that the sleeve is blocked is avoided.
Preferably, the seat cover is made of aluminum magnesium alloy.
Example three:
a self-drift diameter cementing device is shown in figures 1 to 3 and comprises a sleeve 1, an opening sleeve, a closing sleeve, a rubber plug and a seat sleeve, wherein the rubber plug can drive the closing sleeve to move, and the seat sleeve can drive the opening sleeve to move; wherein the content of the first and second substances,
The rubber plug and the seat sleeve are respectively the soluble rubber plug recorded in the first embodiment and the seat sleeve recorded in the second embodiment, and the seat sleeve is arranged in the opening sleeve through a pin; the opening sleeve and the closing sleeve are arranged in the same way as the opening sleeve and the closing sleeve in the prior art, and the components and the common structures or the common means which are known in the industry belong to the technical field, so the details are not described below;
When the self-drift diameter cement injector is used, a worker can put the self-drift diameter cement injector into a well hole, when the worker needs to fill secondary cement into the casing 1, the worker can put the gravity opening plug into the casing 1 and pressurize the casing 1, so that the gravity opening plug can drive the seat sleeve and the opening sleeve to move, a cement injection hole is opened, and at the moment, the worker can fill the secondary cement;
after the secondary cement is filled, a worker can put the rubber plug into the sleeve 1 and pressurize the sleeve 1, the rubber plug falls on the closing sleeve when moving downwards, and along with the increase of the pressure in the sleeve 1, the rubber plug can extrude the closing sleeve downwards to enable the closing sleeve to move downwards and close the cement injection hole to finish the well cementation.
After the well cementation work is finished, the worker can pour into the electrolyte solution capable of dissolving the rubber plug and the seat sleeve into the sleeve 1, and the electrolyte solution reacts with the rubber plug and the seat sleeve to dissolve the rubber plug and the seat sleeve, so that the drift diameter of the sleeve 1 is realized, and the requirement of later-stage underground operation is met.
the above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A soluble rubber plug, which is characterized in that: the rubber plug is characterized by comprising a plug body (2), wherein a rubber plug sleeve (3) is arranged on the outer surface of the plug body (2), and the rubber plug sleeve (3) is made of soluble rubber.
2. The soluble plug according to claim 1, wherein: stopper body (2) are the cylinder, just be provided with a plurality of draw-in groove (9) on the circumference lateral wall of stopper body (2), be provided with on the gluey stopper cover (3) with convex part (10) that draw-in groove (9) match, gluey stopper cover (3) pass through convex part (10) with the cooperation card of draw-in groove (9) is established on stopper body (2).
3. the soluble plug according to claim 2, wherein: the rubber plug sleeve (3) is provided with a plurality of rubber plug wings (4) for cleaning the pipe wall.
4. The soluble plug according to claim 3, wherein: one end of the plug body (2) is provided with a hemispherical abutting part (5) protruding outwards.
5. The soluble plug according to any one of claims 1 to 4, wherein: the plug body (2) is made of a soluble metal.
6. The soluble plug according to claim 5, wherein: the plug body (2) is made of aluminum magnesium alloy.
7. a seat cover, characterized in that: including cover body (6), be provided with on cover body (6) and be used for to support ball seat (7) of establishing gravity opening stopper, ball seat (7) are inside sunken hemispherical structure, just the seat cover is made for soluble metal.
8. the seat cover of claim 7, wherein: and a through hole (8) for installing a pin is arranged on the side wall of the sleeve body (6).
9. The seat cover of claim 8, wherein: the outer side wall of the sleeve body (6) is provided with a plurality of salient points for increasing friction force.
10. A seat cover according to claim 9, wherein: the sleeve body (6) is made of aluminum magnesium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920492470.2U CN209761389U (en) | 2019-04-11 | 2019-04-11 | Soluble rubber plug and seat sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920492470.2U CN209761389U (en) | 2019-04-11 | 2019-04-11 | Soluble rubber plug and seat sleeve |
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| Publication Number | Publication Date |
|---|---|
| CN209761389U true CN209761389U (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920492470.2U Active CN209761389U (en) | 2019-04-11 | 2019-04-11 | Soluble rubber plug and seat sleeve |
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| CN (1) | CN209761389U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109299A (en) * | 2020-08-27 | 2022-03-01 | 中国石油化工股份有限公司 | Stage cementing device and method for top cementing |
-
2019
- 2019-04-11 CN CN201920492470.2U patent/CN209761389U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114109299A (en) * | 2020-08-27 | 2022-03-01 | 中国石油化工股份有限公司 | Stage cementing device and method for top cementing |
| CN114109299B (en) * | 2020-08-27 | 2024-04-19 | 中国石油化工股份有限公司 | Stage cementing device for top cementing and method thereof |
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