CN111021986B - Bridge Plug - Google Patents
Bridge Plug Download PDFInfo
- Publication number
- CN111021986B CN111021986B CN201911420396.4A CN201911420396A CN111021986B CN 111021986 B CN111021986 B CN 111021986B CN 201911420396 A CN201911420396 A CN 201911420396A CN 111021986 B CN111021986 B CN 111021986B
- Authority
- CN
- China
- Prior art keywords
- cylinder
- slip
- wall
- bridge plug
- ring
- 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.)
- Active
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/134—Bridging plugs
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention relates to the technical field of oil and gas production, in particular to a bridge plug. The automatic clamping device comprises a barrel, a seat sleeve, a rubber barrel, a cone barrel, a slip and a lower joint, wherein the seat sleeve is sleeved on the outer wall of the first end of the barrel, the first end of the cone barrel is sleeved on the second end of the barrel, the rubber barrel is sleeved on the outer wall of the barrel, two ends of the rubber barrel are respectively close to the seat sleeve and the cone barrel, the slip is of a cylindrical integral structure, the inner diameter of the slip is gradually reduced from the first end to the second end of the slip, a plurality of annular teeth are arranged on the outer wall of the slip, a plurality of gaps are formed in the direction from the first end to the second end of the slip, the gaps are arranged on the inner wall of the slip at intervals, the inner wall of the first end of the slip is sleeved on the outer wall of the second end of the cone barrel, a channel for communicating the two ends is formed in the middle of the lower joint, the first end of the lower joint is matched with the second end of the slip, and a clamping groove is formed in the channel of the lower joint. The slips of the bridge plug are of an integrated structure, so that looseness and dislocation after hanging can be avoided, and the bridge plug can be made of soluble materials, so that the bridge plug is fully soluble.
Description
Technical Field
The invention relates to the technical field of oil and gas production, in particular to a bridge plug.
Background
In the production process of oil gas, in order to improve the oil gas yield, a multi-layer staged fracturing technology is adopted in the exploitation process. Among them, the bridge plug and perforation technique is the most applied fracturing technique, and the bridge plug is the staged fracturing technique and the important underground layered plugging tool thereof.
In order to ensure the production work after the fracturing work, the bridge plug can be designed into a soluble bridge plug, namely, the bridge plug is dissolved after a period of time after the fracturing work is completed, so that a series of problems in the existing bridge plug milling work are solved, and the later transformation is influenced. However, in order to ensure the strength of the bridge plug, the ceramic insert is inlaid on the slips of the bridge plug in the prior art, the insert is not dissolved along with the time of parents, and the problems of loose and dislocation and the like caused by unstable setting of the slips and the sleeve can also occur.
The above technical problems are urgently needed to be solved.
Disclosure of Invention
The main purpose of the present invention is to provide a bridge plug with a novel structure, which can solve the above technical problems.
The aim and the technical problems of the invention are realized by adopting the following technical proposal. According to the present invention, there is provided a bridge plug comprising:
The device comprises a cylinder body, a seat sleeve, a rubber cylinder and a cone cylinder, wherein the seat sleeve is sleeved on the outer wall of the first end of the cylinder body in a ring mode, the inner diameter of the first end of the cone cylinder is larger than that of the second end of the cone cylinder, the first end of the cone cylinder is sleeved on the second end of the cylinder body, the rubber cylinder is sleeved on the outer wall of the cylinder body, and two ends of the rubber cylinder are close to the seat sleeve and the cone cylinder respectively;
The inner diameter of the slip is gradually reduced from the first end to the second end of the slip, a plurality of annular teeth are arranged on the outer wall of the slip, gaps are formed in the direction from the first end to the second end of the slip, the gaps extend to a preset distance from the outer wall of the slip, and the gaps are multiple and are arranged on the periphery of the inner wall of the slip at intervals;
wherein, the inner wall of the first end of the slip is sleeved on the outer wall of the second end of the cone;
the lower joint, the lower joint middle part is provided with the passageway at intercommunication both ends, the first end of lower joint with the second end cooperation of slips, be provided with the joint groove in the passageway of lower joint.
The aim and the technical problems of the invention can be further realized by adopting the following technical measures.
Preferably, the bridge plug described above, wherein the annular teeth are arranged side by side from the first end to the second end of the slips;
the cross section of the annular tooth is an equilateral trapezoid, and the included angle between two sides of the equilateral trapezoid is 90 degrees.
Preferably, the bridge plug described above, wherein the tooth flanks of the annular teeth are provided with a cemented carbide coating.
Preferably, the bridge plug is characterized in that the width of the gap is 0.01mm-0.02mm;
the wall thickness remained at the position where the slips are provided with the gaps is 15-25% of the wall thickness of the slips.
Preferably, the bridge plug is characterized in that the inner wall of the seat cover is provided with a plurality of rows of inverted teeth, and the outer wall of the first end of the cylinder is provided with inverted teeth meshed with the inverted teeth of the seat cover.
Preferably, the bridge plug provided by the embodiment of the invention further includes:
The number of the first protection rings is two, and the first protection rings are respectively hooped on the outer walls of the two ends of the rubber cylinder and are flush with the outer walls of the rubber cylinder.
Preferably, the bridge plug provided by the embodiment of the invention further includes:
The cross sections of the second protection rings are triangular, and the number of the second protection rings is two;
The outer chamfer is arranged at one end, close to the rubber cylinder, of the seat sleeve, the first end of the rubber cylinder and the first protection ring form an outer chamfer structure together, the second end of the rubber cylinder and the first protection ring form an outer chamfer structure together, and the outer chamfer is arranged at the first end of the cone cylinder;
One second protection ring is located on the outer wall of the cylinder body between the seat sleeve and the rubber cylinder, two side faces of the second protection ring are respectively attached to an outer chamfer of the seat sleeve and an outer chamfer structure of the first end of the rubber cylinder, the other second protection ring is located on the outer wall of the cylinder body between the cone cylinder and the rubber cylinder, and two side faces of the second protection ring are respectively attached to an outer chamfer of the first end of the cone cylinder and an outer chamfer structure of the second end of the rubber cylinder.
Preferably, the bridge plug further comprises a second protection ring, wherein the second protection ring comprises a first split ring and a second split ring, the cross section of the first split ring is a right triangle, the cross section of the second split ring is a right triangle, a peripheral protrusion is arranged on the side wall of one right-angle side of the cross section of the first split ring, a peripheral groove is arranged on the side wall of one right-angle side of the cross section of the second split ring, and the protrusion is matched with the groove.
Preferably, the bridge plug provided by the embodiment of the invention further includes:
The support ring is sleeved on the outer wall of the cylinder body and is positioned between the rubber cylinder and the cylinder body, and the support ring is positioned in the middle of the rubber cylinder.
Preferably, the end of the second end of the slip is provided with a plurality of first protruding blocks, and the first protruding blocks are distributed at intervals around the second end of the slip;
The end part of the first end of the lower joint is provided with a plurality of second convex blocks, and the second convex blocks are distributed at intervals on the periphery of the first end of the lower joint;
the end part of the second end of the slip is matched with the end part of the first end of the lower joint, and the first lugs and the second lugs are mutually inserted into gaps of the other.
By means of the technical scheme, the bridge plug has at least the following advantages:
According to the bridge plug provided by the embodiment of the invention, the slips are arranged into an integrated structure, and the inner wall of the slips is provided with a plurality of gaps at intervals, so that when a bridge plug seat is required to be hung on the wall of a casing, the slips can be pulled by an operating tool to move towards the first end direction of the cone, the gaps of the slips are expanded by the cone, and annular teeth of the slips are clamped on the inner wall of the casing to realize seat hanging. In addition, the slips provided by the embodiment of the invention are of an integrated structure and have no insert, and the slips and other parts of the bridge plug can be made of soluble materials, such as a American alloy material, so that the problem that insoluble inserts easily block channels is solved.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic illustration of a bridge plug according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of a slip construction for a bridge plug according to an embodiment of the present invention;
FIG. 3 is a schematic illustration of another perspective view of a slip for a bridge plug provided in accordance with an embodiment of the present invention;
FIG. 4 is an enlarged view at B of FIG. 3;
FIG. 5 is a schematic view of a first guard ring structure of a bridge plug according to an embodiment of the present invention;
FIG. 6 is another schematic view of the first guard ring of the bridge plug according to the embodiment of the present invention;
FIG. 7 is a schematic diagram of a second guard ring structure of a bridge plug according to an embodiment of the present invention;
FIG. 8 is a schematic view of another view of a second guard ring of a bridge plug according to an embodiment of the present invention;
FIG. 9 is a schematic view of the lower joint structure of a bridge plug according to an embodiment of the present invention;
Fig. 10 is another schematic view of the structure of the lower joint of the bridge plug according to the embodiment of the present invention.
The reference numerals in fig. 1-10 correspond to:
1-cylinder, 2-seat envelope, 3-packing, 4-cone, 5-slip, 51-annular tooth, 52-slit, 53-first bump, 6-lower joint, 61-clamping groove, 62-second bump, 63-serration, 7-inverted tooth, 8-first guard ring, 9-second guard ring, 91-first split ring, 911-bump, 92-second split ring, 921-groove, 10-support ring
Detailed Description
In order to further describe the technical means and effects adopted by the invention to achieve the preset aim, the following detailed description is given below of the specific implementation, structure, characteristics and effects of the bridge plug according to the invention with reference to the attached drawings and the preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.
As shown in fig. 1, one embodiment of the invention provides a bridge plug which comprises a cylinder body 1, a seat sleeve 2, a rubber cylinder 3, a cone cylinder 4, slips 5 and a lower joint 6; the seat sleeve 2 is sleeved on the outer wall of the first end of the cylinder body 1 in a ring mode, the inner diameter of the first end of the cone cylinder 4 is larger than the inner diameter of the second end of the cone cylinder 4, the first end of the cone cylinder 4 is sleeved on the second end of the cylinder body 1, the rubber cylinder 3 is sleeved on the outer wall of the cylinder body 1, two ends of the rubber cylinder are respectively close to the seat sleeve 2 and the cone cylinder 4, the slips 5 are of a cylindrical integral structure, the inner diameter of each slip is gradually reduced from the first end to the second end of each slip 5, a plurality of annular teeth 51 are arranged on the outer wall, gaps 52 are formed in the direction from the first end to the second end of each slip 5, the gaps 52 extend to a preset distance from the outer wall of each slip 5, the gaps 52 are formed in a plurality of and are arranged on the inner wall of each slip 5 at intervals, the inner wall of the first end of each slip 5 is sleeved on the outer wall of the second end of each cone cylinder 4, a channel communicating two ends is formed in the middle of each lower joint 6, the first end of each lower joint 6 is matched with the second end of each slip 5, and a clamping groove 61 is formed in each lower joint 6.
Specifically, the cylinder body 1, the seat cover 2, the cone 4, the slips 5 and the lower joint 6 are all made of metal materials having a certain strength, and preferably made of metal materials capable of being dissolved, such as magnesium-based alloy, aluminum-based alloy, etc., wherein the specific materials are not limited as long as the solubility in the well for a certain time can be ensured.
The cylinder 1 is a body structure of a bridge plug and is a pipe with uniform outer diameter and uniform inner diameter. The seat cover 2 is a sleeve sleeved at the first end of the cylinder 1 and connected with the first end of the cylinder 1, the connection between the seat cover 2 and the outer wall of the first end of the cylinder 1 is preferably a clamping connection, and the seat cover 2 and the outer wall of the first end of the cylinder 1 can move relatively under a certain pressure, namely, when the pressure acts on the seat cover 2 along the direction from the first end to the second end of the cylinder 1, the seat cover 2 can be pushed to slide along the cylinder 1 and squeeze the rubber cylinder 3 when the pressure reaches a preset value.
The connection between the conical cylinder 4 and the second end of the cylinder 1 may be a welded connection or a threaded connection, but it should be noted that after the connection of the conical cylinder 4 and the second end of the cylinder 1, the outer diameter of the connection part needs to be the same as the outer diameter of the cylinder 1, that is, the second end of the cylinder 1 needs to be stepped, so that the conical cylinder 4 is sleeved on the second end of the cylinder 1 to form a smooth side wall, and the side wall surface of the cylinder 1 is not protruded.
The external diameter of the slips 5 is smaller than or equal to the external diameter of the barrel body 1, the slips 5 are of structures which can move towards the conical barrel 4 and expand under the action of external force when the bridge plug seat is hung on the sleeve, and after the slips are expanded, copper drum annular teeth 51 can be clamped on the inner wall of the sleeve. The inner diameter of the slip 5 is gradually reduced from the first end to the second end, so that the slip is just matched with the shape of the cone 4, and the slip 5 can be expanded under the expansion pressure of the cone 4 after moving towards the first end of the cone 4, in addition, the slip 5 is integrally provided, but in order to ensure that the slip 5 can be expanded, a gap 52 is arranged on the inner wall of the slip 5, the gap 52 is arranged along the direction from the first end to the second end of the slip 5, the gap 52 is arranged so that the side wall of the slip 5 is only connected with a local thickness at the position of the gap 52, and the gap 52 which is available for the slip 5 can be expanded by a certain angle under the action of expansion pressure, namely the slip 5 can be expanded. Wherein the number of slits 52 may be a plurality, such as 6 or 8, and the plurality of slits 52 are preferably evenly spaced apart on the inner wall of the slip 5.
As shown in fig. 1, 9 and 10, the lower joint 6 is a structure for pulling the slips 5 under the action of an auxiliary tool, the lower joint 6 also needs to be provided in a transparent structure in order to ensure the penetration of the entire bridge plug, and the second end of the lower joint 6 may be provided with a plurality of saw tooth structures 63 on the inner wall in order to avoid the pressure ball from reversely acting on the lower joint 6 to block the passage. Wherein the clamping groove 61 in the channel of the lower joint 6 can be an annular groove arranged in the channel.
The rubber cylinder 3 is a component which deforms and swells when the bridge plug is hung, namely, the bridge plug can deform and swell under the pressure of the seat sleeve 2. The rubber cylinder 3 can be made of a soluble material, so that all components forming the bridge plug can be made of a soluble material, the bridge plug can be fully soluble, later grinding and milling operations are not needed, and the operation cost and the operation time are reduced.
The bridge plug is used in the mode that the lower joint 6 of the bridge plug is used as the head part to be put into a specified position of a casing in an oil well, then under the action of an auxiliary tool, the seat sleeve 2 is pressed down and the lower joint 6 is pulled up, so that the seat sleeve 2 presses the rubber cylinder 3 to expand and squeeze the rubber cylinder to the casing wall, and the lower joint 6 moves towards the first end direction of the cone cylinder 4 with the slips 5, so that the slips 5 are expanded, the slips 5 are squeezed to the casing wall, and further the seat hanging of the bridge plug is realized.
According to the bridge plug provided by the embodiment of the invention, the slips 5 are arranged into an integral structure, and the inner wall of the slips 5 is provided with the plurality of gaps 52 at intervals, so that when a bridge plug seat is required to be hung on a casing wall, the slips 5 can be pulled by an operating tool to move towards the first end direction of the cone 4, the gaps 52 of the slips 5 are expanded by the cone 4, and the annular teeth 51 of the slips 5 are clamped on the inner wall of the casing to realize seat hanging. In addition, because the slips 5 provided by the embodiment of the invention are of an integrated structure and have no insert, the slips 5 and other parts of the bridge plug can be made of soluble materials, such as a American alloy material, so that the problem that insoluble inserts easily block channels is solved.
1-4, In an implementation, the annular teeth 51 are arranged side by side from the first end to the second end of the slip 5, the section of the annular teeth 51 is an equilateral trapezoid, and the included angle between two sides of the equilateral trapezoid is 90 degrees.
Specifically, the side wall of the whole slip 5 is arranged with the annular teeth 51 side by side, so that the number of the annular teeth 51 can be effectively increased, namely, the number of the annular teeth 51 can be effectively increased, the contact area between the slip 5 and the casing wall can be increased when the slip 5 is expanded, the friction force is increased, and the seat hanging of the bridge plug is firmer. In addition, the annular teeth 51 are arranged to be trapezoid in cross section, tooth tops of the annular teeth 51 are circumferential surfaces, and an included angle between two side edges of the cross section of the equilateral trapezoid is 90 degrees, so that after a bridge plug seat is hung, the annular teeth 51 can be stably meshed onto the inner wall of a sleeve, and can bear up-and-down pulling force and cannot move.
In order to realize full solubility of the bridge plug, as shown in fig. 1-4, the slips 5 are integrally configured, so that the slips 5 are easy to have low strength of the annular teeth 51 under the limitation of materials for manufacturing the slips 5, so that a hard alloy coating is arranged on the tooth surfaces of the annular teeth 51, any material with high strength, such as a coating of manganese steel, tungsten steel and the like, can be selected, and the hard alloy coating can be formed on the tooth surfaces of the annular teeth 51 in a coating welding manner, and the thickness can be selected according to practical needs. This effectively increases the strength and wear resistance of the annular teeth 51 of the slips 5 by the provision of the cemented carbide coating.
As shown in fig. 1-4, in an embodiment, the width of the slit 52 is 0.01mm-0.02mm, preferably 0.015mm, and the slit 52 may be formed by wire cutting. The residual wall thickness of the gap 52 formed by the slips 5 is 15-25% of the wall thickness of the slips 5, the residual thickness can ensure that the slips 5 are of an integral structure, and the gap 52 of the slips 5 can be expanded under the action of expansion pressure, so that the slips 5 are expanded and pressed on the inner wall of the casing.
As shown in fig. 1, in an implementation in which the inner wall of the seat cover 2 is provided with a plurality of rows of teeth 7, the outer wall of the first end of the cylinder 1 is provided with teeth that mesh with the teeth 7 of the seat cover 2.
Specifically, the direction of inclination of the inverted tooth at the first end of the cylinder 1 faces the first end of the cylinder 1, and the direction of inclination of the inverted tooth 7 at the inner wall of the seat cover 2 is opposite to the direction of inclination of the inverted tooth on the cylinder 1, so that after the two are matched, friction between the two can be increased, and the seat cover 2 is prevented from being pushed to the second end direction of the cylinder 1 when smaller pressure acts on the seat cover 2.
In an implementation, as shown in fig. 1, the bridge plug provided in the embodiment of the present invention further includes two first protection rings 8, where the number of the first protection rings 8 is two, and the first protection rings are respectively hooped on the outer walls of the two ends of the rubber cylinder 3 and are flush with the outer walls of the rubber cylinder 3.
Specifically, the first protection ring 8 is used for pressing and holding the rubber cylinder 3, and preventing the rubber cylinder 3 from being completely opened and attached to the inner diameter of the upper sleeve when the rubber cylinder 3 expands, so as to protect the shoulder positions of the two ends of the rubber cylinder 3 from being damaged when bearing high pressure.
As shown in fig. 1 and fig. 5-fig. 8, in an implementation manner, the bridge plug provided by the embodiment of the invention further includes a second protection ring 9, the cross section of the second protection ring 9 is triangular, the number of the second protection rings 9 is two, wherein one end of the seat cover 2 close to the rubber tube 3 is provided with an outer chamfer, the first end of the rubber tube 3 and the first protection ring 8 form an outer chamfer structure together, the second end of the rubber tube 3 and the first protection ring 8 form an outer chamfer structure together, the first end of the cone 4 is provided with an outer chamfer, one second protection ring 9 is sleeved on the outer wall of the cylinder 1 between the seat cover 2 and the rubber tube 3, two sides of the second protection ring 9 are respectively attached to the outer chamfer of the seat cover 2 and the outer chamfer structure of the first end of the rubber tube 3, the other second protection ring 9 is sleeved on the outer wall of the cylinder 1 and is located between the cone 4 and the first end of the cone cover 4 and the outer chamfer structure of the cone cover 4 respectively.
Further, the second protection ring 9 includes a first split ring 91 and a second split ring 92, the cross section of the first split ring 91 is a right triangle, the cross section of the second split ring 92 is a right triangle, a peripheral protrusion 911 is disposed on a sidewall where one right-angle side of the cross section of the first split ring 91 is located, a peripheral groove 921 is disposed on a sidewall where one right-angle side of the cross section of the second split ring 92 is located, and the protrusion 911 is matched with the groove 921.
Specifically, by setting the second protection ring 9 to have a triangular cross section, the seat cover 2 moves toward the second end of the cylinder 1, and pressure acts on the second protection ring 9, and the contact surface is an inclined surface, so that the first split ring 91 of the second protection ring 9 can be expanded, then the protrusion 911 brings the groove 921, the second split ring 92 to be expanded by a certain size, and finally the pressure acts on the rubber cylinder 3, and because the contact surface with the rubber cylinder 3 is also an inclined surface, the contact surface with the end of the rubber cylinder 3 is increased, the pressure is prevented from directly acting on the end of the rubber cylinder 3, the rubber cylinder 3 is prevented from being damaged, and meanwhile, the acting area is increased, and the end of the rubber cylinder 3 is prevented from being damaged by the pressure.
In an implementation, as shown in fig. 1, the bridge plug provided by the embodiment of the invention further comprises a support ring 10, wherein the support ring 10 is sleeved on the outer wall of the cylinder 1 and is positioned between the rubber cylinder 3 and the cylinder 1, and the support ring 10 is positioned in the middle of the rubber cylinder 3.
Specifically, through the setting of support ring 10, when guaranteeing packing element 3 seat to seal, the centre is the bulge earlier to laminate completely on the sleeve wall.
As shown in fig. 1-3 and fig. 9-10, in a specific implementation, a plurality of first protrusions 53 are disposed at an end of the second end of the slip 5, the plurality of first protrusions 53 are distributed at intervals around the second end of the slip 5, a plurality of second protrusions 62 are disposed at an end of the first end of the lower joint 6, the plurality of second protrusions 62 are distributed at intervals around the first end of the lower joint 6, wherein the end of the second end of the slip 5 is matched with the end of the first end of the lower joint 6, and the plurality of first protrusions 53 and the plurality of second protrusions 62 are mutually inserted in gaps of each other.
Specifically, the lower joint 6 may prevent rotation of the slips 5 by the arrangement of the first and second lugs 53 and 62. The first protrusion 53 and the second protrusion 62 may have a fan shape, so that the first protrusion 53 and the second protrusion 62 may form a complete fan ring when they are inserted into each other in the gap.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the present invention in any way, but any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911420396.4A CN111021986B (en) | 2019-12-31 | 2019-12-31 | Bridge Plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911420396.4A CN111021986B (en) | 2019-12-31 | 2019-12-31 | Bridge Plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111021986A CN111021986A (en) | 2020-04-17 |
| CN111021986B true CN111021986B (en) | 2024-12-31 |
Family
ID=70201443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911420396.4A Active CN111021986B (en) | 2019-12-31 | 2019-12-31 | Bridge Plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111021986B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111764862A (en) * | 2020-06-29 | 2020-10-13 | 中国石油天然气集团有限公司 | Omnidirectional protection end ring at the end of the cartridge |
| CN112627743B (en) * | 2020-12-18 | 2023-03-21 | 中石化石油机械股份有限公司 | Soluble bridge plug fracturing process pipe column and using method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207161042U (en) * | 2017-08-09 | 2018-03-30 | 诺斯石油工具(天津)有限公司 | A hydrolyzed bridge plug |
| CN208605164U (en) * | 2018-07-12 | 2019-03-15 | 重庆双标石油工程技术服务有限公司 | Dissolvable bridge plug |
| CN110017117A (en) * | 2019-05-21 | 2019-07-16 | 卢晓东 | Soluble bridge plug |
| CN211524767U (en) * | 2019-12-31 | 2020-09-18 | 四川安东油气工程技术服务有限公司 | Bridge plug |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106894787A (en) * | 2017-03-06 | 2017-06-27 | 四机赛瓦石油钻采设备有限公司 | A kind of single deck tape-recorder watt big orifice bridging plug and its set method |
| CN209228337U (en) * | 2017-11-09 | 2019-08-09 | 成都维泰油气能源技术有限公司 | A kind of dissolvable bridge plug |
| CN208502731U (en) * | 2018-08-01 | 2019-02-15 | 四川省威沃敦化工有限公司 | A kind of solvable bridge plug of minor diameter |
| CN109505559A (en) * | 2018-11-29 | 2019-03-22 | 成都铭鉴知源油田工程科技有限公司 | A kind of solvable bridge plug |
-
2019
- 2019-12-31 CN CN201911420396.4A patent/CN111021986B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207161042U (en) * | 2017-08-09 | 2018-03-30 | 诺斯石油工具(天津)有限公司 | A hydrolyzed bridge plug |
| CN208605164U (en) * | 2018-07-12 | 2019-03-15 | 重庆双标石油工程技术服务有限公司 | Dissolvable bridge plug |
| CN110017117A (en) * | 2019-05-21 | 2019-07-16 | 卢晓东 | Soluble bridge plug |
| CN211524767U (en) * | 2019-12-31 | 2020-09-18 | 四川安东油气工程技术服务有限公司 | Bridge plug |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111021986A (en) | 2020-04-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8047279B2 (en) | Slip segments for downhole tool | |
| US9506316B2 (en) | Composite slips for a frac plug | |
| US10385651B2 (en) | Frac plug with retention mechanisim | |
| CA2772466C (en) | Expansion device with slips and wedges having bridges | |
| US9175533B2 (en) | Drillable slip | |
| US9133681B2 (en) | Protected retaining bands | |
| US10378305B2 (en) | Frac plug with retention mechanism | |
| CN111021986B (en) | Bridge Plug | |
| CN106907128B (en) | Central shaft for bridge plug, bridge plug and setting method of bridge plug | |
| US9617823B2 (en) | Axially compressed and radially pressed seal | |
| US9784066B1 (en) | Downhole bridge plug or packer assemblies | |
| US10633946B2 (en) | Frac plug with retention mechanism | |
| EP3645826A1 (en) | Seal apparatus and methods of use | |
| US9803449B2 (en) | Pin-less composite sleeve or coupling to composite mandrel or shaft connections | |
| EP3645828A1 (en) | Seal apparatus and methods of use | |
| US9080417B2 (en) | Drillable tool back up shoe | |
| US20180328137A1 (en) | Frac Plug with Retention Mechanism | |
| US20220034190A1 (en) | Backup Rings For Downhole Bridge Plug Sealing Element Systems | |
| CN211524767U (en) | Bridge plug | |
| CN206522118U (en) | A kind of solvable packer | |
| US20170130877A1 (en) | Pipe connector | |
| US11401775B2 (en) | High strength connection for composite sleeve and composite mandrel and related methods | |
| EP3173573B1 (en) | Spherical blow out preventer annular seal | |
| CN214464065U (en) | Expansion ring for soluble bridge plug and soluble bridge plug | |
| CN211900542U (en) | Downhole packer apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |