CN209924966U - Drilling-free blind hoop - Google Patents
Drilling-free blind hoop Download PDFInfo
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- CN209924966U CN209924966U CN201822168144.4U CN201822168144U CN209924966U CN 209924966 U CN209924966 U CN 209924966U CN 201822168144 U CN201822168144 U CN 201822168144U CN 209924966 U CN209924966 U CN 209924966U
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- blind plate
- gasket
- blind
- adjusting ring
- drilling
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Abstract
The utility model relates to an exempt from to bore blind hoop of formula, including body, adjusting ring, gasket, blind plate, the top and the below of its characterized in that blind plate are provided with gasket 3 respectively, and gasket 3 is the brass material, and the top of top gasket is provided with the adjusting ring, and the blind plate is the toughened brittle material, and this is internal at first to install the gasket of below during the installation, then installs this internally with the blind plate again, and the gasket of putting into the top again is used for fixed blind plate, and the blind plate increases the brass gasket from top to bottom respectively, has protected the blind plate, has increased the bearing capacity of blind plate. The beneficial effects of the utility model are that, the used material of blind plate is the toughened brittle material, surpasss and bears the pressure after, whole breakage, and the particle diameter is no longer than 5mm, does not have any influence to the later stage operation, simple structure, and is small, easy operation, well cementation operation back need not to bore down and sweeps away, practices thrift the drilling cost.
Description
Technical Field
The utility model relates to a replace device of drillable blind plate, specific blind hoop of exempting from to bore in the cement injection technology in screen pipe top among the oil industry.
Background
The currently used blind plates are divided into drillable blind plates and drill-free blind plates, wherein the core part of the drillable blind plate is made of aluminum alloy or cast iron, and when the blind plate is drilled by a drill bit, the drilling cost is increased, and in the drilling process, part of residues are left in the blind plate, so that a rubber cylinder is easily scratched in later operation; and another drilling-free blind plate is salvaged, so that salvage failure is easy to occur in the operation process, drilling is carried out, time and labor are wasted, and the working efficiency is low.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome prior art not enough, provide an exempt from to bore blind hoop of formula, the utility model provides a technical scheme that its technical problem adopted is: the utility model discloses a structure includes the body, the adjusting ring, the gasket, the blind plate, the top and the below of its characterized in that blind plate are provided with the gasket respectively, the gasket is the brass material, the top of top gasket is provided with the adjusting ring, the blind plate is tempering brittle material, install this internally with the gasket of below at first during the installation, then install this internally with the blind plate again, the gasket of putting into the top again is used for fixed blind plate, the blind plate increases the brass gasket from top to bottom respectively, the blind plate has been protected, the bearing capacity of blind plate has been increased, fix the inboard at the body with the adjusting ring to it is fixed to make gasket and blind plate.
The beneficial effects of the utility model are that, the used material of blind plate is the toughened brittle material, surpasss and bears the pressure after, whole breakage, and the particle diameter is no longer than 5mm, does not have any influence to the later stage operation, simple structure, and is small, easy operation, well cementation operation back need not to bore down and sweeps away, practices thrift the drilling cost.
Drawings
FIG. 1: the embodiment of the utility model provides a schematic structure.
In the figure: the device comprises a body 1, an adjusting ring 2, a gasket 3 and a blind plate 4.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings; as shown in the accompanying drawings, the utility model discloses a structure includes body 1, adjusting ring 2, gasket 3, blind plate 4, the top and the below of its characterized in that blind plate 4 are provided with gasket 3 respectively, gasket 3 is the brass material, the top of top gasket 3 is provided with adjusting ring 2, blind plate 4 is tempering brittle material, after exceeding the bearing pressure, whole breakage, the particle diameter is no longer than 5mm, do not have any influence to the later stage operation, at first install the gasket of below in body 1 during the installation, then install blind plate 4 in body 1, the gasket of putting into the top again is used for fixed blind plate 4, blind plate 4 increases brass gasket 3 from top to bottom respectively, blind plate 4 has been protected, the bearing capacity of blind plate 4 has been increased, fix adjusting ring 2 in the inboard of body 1, thereby make gasket 3 and blind plate 4 fixed.
The working principle is as follows: the tool is used in a screen pipe well cementation process, and a pipe string structure is as follows: the sequence from bottom to top is as follows: the method comprises the steps of guiding shoes, sieve tube strings, drilling-free blind hoops, external packers, drilling-free hydraulic stage cementing devices and sleeve strings, wherein during construction, a well head is pressurized to 7-12MPa, pressure is stabilized for 10 minutes, the packers are expanded and sealed, pressurization is continued to 17-20MPa, circulation holes of the stage cementing devices are opened, circulation is established, weighted rubber hanging balls are thrown in, cement slurry injection operation is carried out, special closing plugs are thrown in, slurry is replaced, collision pressure is carried out, the circulation holes are closed, pressurization is continued, inner sleeves fall off, pressurization is continued to 25MPa, drilling-free blind hoops are broken, and the diameter of broken particles is not more than 5 mm.
The above-mentioned embodiments are only described for the preferred embodiments of the present invention, and are not intended to limit the concept and scope of the present invention, and various modifications and improvements made by the technical solutions of the present invention by those skilled in the art should fall into the protection scope of the present invention without departing from the design concept of the present invention, and the technical contents claimed by the present invention are all described in the claims.
Claims (1)
1. The drilling-free blind hoop comprises a body (1), an adjusting ring (2), a gasket (3) and a blind plate (4), and is characterized in that the gasket (3) is arranged above and below the blind plate (4) respectively, the gasket (3) is made of brass, the adjusting ring (2) is arranged above the upper gasket (3), and the blind plate (4) is made of a toughened brittle material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822168144.4U CN209924966U (en) | 2018-12-24 | 2018-12-24 | Drilling-free blind hoop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822168144.4U CN209924966U (en) | 2018-12-24 | 2018-12-24 | Drilling-free blind hoop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209924966U true CN209924966U (en) | 2020-01-10 |
Family
ID=69066544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822168144.4U Active CN209924966U (en) | 2018-12-24 | 2018-12-24 | Drilling-free blind hoop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209924966U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111691848A (en) * | 2020-06-19 | 2020-09-22 | 西北工业大学 | Full-pressure temporary plugging structure for controlling crushing granularity and design method |
-
2018
- 2018-12-24 CN CN201822168144.4U patent/CN209924966U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111691848A (en) * | 2020-06-19 | 2020-09-22 | 西北工业大学 | Full-pressure temporary plugging structure for controlling crushing granularity and design method |
| CN111691848B (en) * | 2020-06-19 | 2021-08-17 | 西北工业大学 | Full-pressure temporary plugging structure for controlling crushing granularity and design method |
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