CN108868694A - Fracturing sliding sleeve - Google Patents
Fracturing sliding sleeve Download PDFInfo
- Publication number
- CN108868694A CN108868694A CN201810953959.5A CN201810953959A CN108868694A CN 108868694 A CN108868694 A CN 108868694A CN 201810953959 A CN201810953959 A CN 201810953959A CN 108868694 A CN108868694 A CN 108868694A
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- inner cylinder
- valve body
- cavity
- diameter inner
- fracturing sliding
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- Granted
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- 238000005488 sandblasting Methods 0.000 claims abstract description 35
- 230000005540 biological transmission Effects 0.000 claims description 10
- 239000004576 sand Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 239000002195 soluble material Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 235000014121 butter Nutrition 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 26
- 238000013461 design Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000003079 shale oil Substances 0.000 description 1
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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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)
- Safety Valves (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention discloses a fracturing sliding sleeve, and belongs to the field of oilfield instruments. This fracturing sliding sleeve includes: the left connector, the valve body, the right connector, the small-diameter inner cylinder, the large-diameter inner cylinder, the elastic piece and the first shear pin are sequentially connected from left to right. Wherein, be provided with first sand blasting hole on the lateral wall of valve body, just, valve body and path inner tube are connected through first shear pin. The small-diameter inner cylinder and the large-diameter inner cylinder are connected in a left-right mode and are all movably sleeved in the valve body, a second sand blasting hole is formed in the side wall of the small-diameter inner cylinder and is used for being communicated with the first sand blasting hole after the small-diameter inner cylinder moves. The valve body, the small-diameter inner cylinder and the left joint are matched to form a first cavity, and the valve body, the large-diameter inner cylinder and the right joint are matched to form a second cavity. An annular cavity is formed between the large-diameter inner cylinder and the valve body, and the elastic piece is arranged in the annular cavity. The pressure sliding sleeve provided by the invention is simple to operate, short in period and low in cost, can meet the requirement of twice shaft pressure tests, and is not limited in pressure test time.
Description
Technical field
The present invention relates to oil field instrument field, in particular to a kind of fracturing sliding bush.
Background technique
In oil field development, in order to improve oil in the flowing environment of underground, increases oil well output, generally require and pressed
Split operation.And before fracturing work, it is highly important that pressure break channel is established in oil well.
The relevant technologies are when carrying out fracturing work, by the perforation on fracturing string, to establish pressure break channel in oil well.
The inventor finds that the existing technology has at least the following problems：
If necessary to carry out fracturing work in deeper horizontal well, then, it needs using coiled tubing in fracturing string
Upper perforation, to establish first segment pressure break channel in oil well, not only the period is long, at high cost, and by well depth and horizontal section length
Limitation.
Summary of the invention
The embodiment of the invention provides a kind of fracturing sliding bushs, can solve above-mentioned technical problem.Specific technical solution is as follows：
The embodiment of the invention provides a kind of fracturing sliding bush, the fracturing sliding bush includes：A sequentially connected left side from left to right
Connector, valve body, right connector and path inner cylinder, major diameter inner cylinder, elastic component, the first shear pin；
The first sandblasting hole is provided on the side wall of the valve body, and, the valve body and the path inner cylinder pass through described the
The connection of one shear pin；
The path inner cylinder and the major diameter inner cylinder or so connection, are movably set in the valve body, described small
It is provided with the second sandblasting hole on the side wall of diameter inner cylinder, second sandblasting hole is used for after the path inner cylinder is mobile and described the
The connection of one sandblasting hole；
The valve body, the path inner cylinder, the left connector have cooperatively formed the first cavity, the valve body, the major diameter
Inner cylinder, the right connector have cooperatively formed the second cavity；
Toroidal cavity is formed between the major diameter inner cylinder and the valve body, the elastic component is arranged in the toroidal cavity
In.
In a kind of possible design, the fracturing sliding bush further includes：Elastic ring, ring body, the second shear pin；
The outer wall of the path inner cylinder and the inner wall of the ring body, the elastic ring, the valve body sequentially offset, and, institute
It states elastic ring and the ring body is arranged in first cavity；
The ring body is connect with the path inner cylinder by second shear pin, and right end is provided with for accommodating the bullet
The boss of property ring；
The card slot for accommodating the ring body is provided on the outer wall of the path inner cylinder.
In a kind of possible design, first be connected to first cavity is provided on the side wall of the path inner cylinder
Pressure transmission hole；
The second pressure transmission hole being connected to second cavity is provided on the side wall of the major diameter inner cylinder.
In a kind of possible design, high-temp solid butter is provided in first cavity and second cavity.
In a kind of possible design, the elastic component is spring.
In a kind of possible design, it is provided in the toroidal cavity between the major diameter inner cylinder and the valve body positioned at institute
State the baffle ring on the left of elastic component.
It is the valve body and the left connector, the right connector, the path inner cylinder, described in a kind of possible design
Sealing ring is provided between major diameter inner cylinder.
In a kind of possible design, the left connector, the valve body, the right connector are sequentially threadedly coupled.
In a kind of possible design, the left end of the right end of the path inner cylinder and the major diameter inner cylinder is threadedly coupled.
In a kind of possible design, first sandblasting hole and second sandblasting hole are blocked by soluble material.
In a kind of possible design, it is provided on the valve body for balancing between the valve body and the major diameter inner cylinder
The relief groove of pressure.
Technical solution bring beneficial effect provided in an embodiment of the present invention is：
Fracturing sliding bush provided in an embodiment of the present invention by the way that the first shear pin is arranged, and makes valve body and path inner cylinder by the
The connection of one shear pin, can not only guarantee being fastenedly connected for valve body and path inner cylinder, but also can make two before pressure is not up to preset value
Person is relatively stable, guarantees going on smoothly for well cementing operation.By setting path inner cylinder and major diameter inner cylinder, reach the two in pressure
Can be mobile to the direction where path inner cylinder after preset value, and then ensure going on smoothly for subsequent pressure testing operation.By big
Elastic component is set in the toroidal cavity of diameter inner cylinder and valve body, it is ensured that after pressure testing operation, path inner cylinder and major diameter inner cylinder
Can counter motion, be connected to the first sandblasting hole on body wall with the second sandblasting hole on path inner cylinder side wall, successfully
Establish pressure break channel.By the first cavity of setting and the second cavity, provides and can move left and right for path inner cylinder and major diameter inner cylinder
Space.As it can be seen that fracturing sliding bush provided in an embodiment of the present invention is not only easy to operate when establishing pressure break channel, the period is short, at
This is low, and can satisfy wellbore pressure test requirement twice, and, the pressure testing time is unrestricted.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the diagrammatic cross-section of fracturing sliding bush provided in an embodiment of the present invention；
Fig. 2 is the partial enlarged view of fracturing sliding bush provided in an embodiment of the present invention.
Appended drawing reference respectively indicates：
1 left connector,
2 valve bodies,
201 first sandblasting holes,
3 right connectors,
4 path inner cylinders,
401 second sandblasting holes,
402 first pressure transmission holes,
5 major diameter inner cylinders,
501 second pressure transmission holes,
6 elastic components,
7 first shear pins,
8 elastic rings,
9 ring bodies,
10 second shear pins,
11 baffle rings,
The first cavity of X,
The second cavity of Y.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
It should be noted that following "left", "right" directions refer to fracturing sliding bush provided in an embodiment of the present invention in level
Direction in well when operation, at this point, the fracturing sliding bush is located at the toe-end (i.e. front end) of horizontal well.When the fracturing sliding bush be applied to it is vertical
When in straight well, following "left", "right" can be interpreted as "upper" "lower" direction.
The embodiment of the invention provides a kind of fracturing sliding bushs, and as shown in Fig. 1, which includes：It is suitable from left to right
Left connector 1, valve body 2, right connector 3 and path inner cylinder 4, major diameter inner cylinder 5, elastic component 6, the first shear pin 7 of secondary connection.Wherein,
The first sandblasting hole 201 is provided on the side wall of valve body 2, and, valve body 2 is connect with path inner cylinder 4 by the first shear pin 7.In path
Cylinder 4 and major diameter inner cylinder 5 or so connect, and are movably set in valve body 2, the second spray is provided on the side wall of path inner cylinder 4
Sand hole 401, the second sandblasting hole 401 are used to be connected to after path inner cylinder 4 is mobile with the first sandblasting hole 201.Valve body 2, path inner cylinder
4, left connector 1 has cooperatively formed the first cavity X, and valve body 2, major diameter inner cylinder 5, right connector 3 have cooperatively formed the second cavity Y.Major diameter
Toroidal cavity is formed between inner cylinder 5 and valve body 2, elastic component 6 is arranged in toroidal cavity.
When need in deeper horizontal well carry out fracturing work when, by left connector 1, right connector 3 respectively with casing connection,
And in casing tripping in pit shaft, well cementing operation is completed.Then, pressure testing operation is carried out, from well head to set pump pressure in pipe, due to
The internal diameter of path inner cylinder 4 is less than the internal diameter of major diameter inner cylinder 5, and 5 stress of major diameter inner cylinder is larger, therefore, when the pressure in fracturing sliding bush
After reaching preset value, the first shear pin 7 is cut, and path inner cylinder 4 and major diameter inner cylinder 5 are moved to the left, and elastic component 6 is compressed, and is completed
First time pressure testing operation (at this point, the left end of path inner cylinder 4 is located in the first cavity X).Then, from well head pressure release, path inner cylinder 4
It moves right under the elastic force effect of elastic component 6 itself with major diameter inner cylinder 5, elastic ring 8 is fallen on the boss of ring body 9, is cut simultaneously
Disconnected second shear pin 10, ring body 9 are fallen on 4 outer wall of path inner cylinder in volume card slot.Again to set pump pressure in pipe, major diameter inner cylinder 5 and small
Diameter inner cylinder 4 drives ring body 9 to be moved to the left again, and elastic ring 8 is fallen on 4 side wall of path inner cylinder, and elastic component 6 is compressed again, complete
At second of pressure testing operation (at this point, the left end of path inner cylinder 4 is located in the first cavity X).Then, from well head pressure release again, bullet
Property part 6 restore to the original state under the elastic force effect of itself, and then path inner cylinder 4 and major diameter inner cylinder 5 is driven to move right, makes the first spray
Sand hole 201 is connected to the second sandblasting hole 401, completes the foundation in pressure break channel (at this point, the right end of major diameter inner cylinder 5 is located at the second sky
In chamber Y).
Fracturing sliding bush provided in an embodiment of the present invention by the way that the first shear pin 7 is arranged, and passes through valve body 2 with path inner cylinder 4
The connection of first shear pin 7, can not only guarantee being fastenedly connected for valve body 2 and path inner cylinder 4, but also can be before pressure is not up to preset value
Keep the two relatively stable, guarantees going on smoothly for well cementing operation.By setting path inner cylinder 4 and major diameter inner cylinder 5, pressing the two
Power can be mobile to the direction where path inner cylinder 4 after reaching preset value, and then ensures going on smoothly for subsequent pressure testing operation.It is logical
It crosses and elastic component 6 is set in the toroidal cavity of major diameter inner cylinder 5 and valve body 2, it is ensured that after pressure testing operation, path inner cylinder 4
With major diameter inner cylinder 5 can counter motion, make the first sandblasting hole 201 on 2 side wall of valve body and the second spray on 4 side wall of path inner cylinder
Sand hole 401 is connected to, and successfully establishes pressure break channel.It is path inner cylinder 4 and major diameter by the way that the first cavity X and the second cavity Y is arranged
Inner cylinder 5 provides the space that can be moved left and right.As it can be seen that fracturing sliding bush provided in an embodiment of the present invention when establishing pressure break channel not
Only easy to operate, the period is short, at low cost, and can satisfy wellbore pressure test requirement twice, and, the pressure testing time is unrestricted.
In embodiments of the present invention, as shown in Fig. 2, which further includes：Elastic ring 8, ring body 9, the second shear pin
10.Wherein, the outer wall of path inner cylinder 4, ring body 9, elastic ring 8, valve body 2 inner wall sequentially offset.Wherein, in ring body 9 and path
Cylinder 4 is connected by the second shear pin 11.9 right end of ring body is provided with the boss for accommodating elastic ring 8.On the outer wall of path inner cylinder 4
It is provided with the card slot for accommodating ring body 9.
After well cementing operation, first time pressure testing operation is carried out, from well head to set pump pressure in pipe, reaches default to pressure
After value, the first shear pin 7 is cut, and path inner cylinder 4, major diameter inner cylinder 5, ring body 9 are moved to the left together, at this point, elastic component 6 is pressed
Contracting, elastic ring 8 are fallen on the boss of ring body right end, complete first time pressure testing operation.Then, from well head pressure release, elastic component 6 is certainly
The elastic force effect of body is lower to restore to the original state, and then drives path inner cylinder 4 and major diameter inner cylinder 5 to move right, while cutting the second shear pin
11, ring body 9 is fallen into the card slot of 4 outer wall of path inner cylinder, and elastic ring 8 is fallen in ring body 9, at this point, fracturing sliding bush, which is in, closes shape
State (i.e. the first sandblasting hole 201 is not connected to the second sandblasting hole 401).
Then, second of pressure testing operation is carried out, from well head to set pump pressure in pipe, path inner cylinder 4, major diameter inner cylinder 5, ring body 9
It is moved to the left together, after reaching predeterminated position, elastic ring 8 is separated with ring body 9, and elastic component 6 is compressed again, is completed second
Pressure testing operation (at this point, the left end of path inner cylinder 4 is located in the first cavity X).Then, from well head pressure release, elastic component 6 itself
Elastic force effect is lower to restore to the original state, and then path inner cylinder 4 and major diameter inner cylinder 5 is driven to move right, and makes the first sandblasting hole 201 and second
Sandblasting hole 401 is connected to, and completes the foundation (at this point, the right end of major diameter inner cylinder 5 is located in the second cavity Y) in pressure break channel, at this time greatly
5 right end sealing ring of diameter inner cylinder is fallen into 2 right end relief groove of valve body.
By the way that elastic ring 8, ring body 9, the second shear pin 10, the outer side bayonet slot of path inner cylinder 4 is arranged, it is ensured that make in first time pressure testing
After industry, elastic ring 8 is fallen on the boss of ring body 9, and fracturing sliding bush is made to remain off (i.e. the first sandblasting hole 201 and
Two sandblasting holes 401 are not connected to).After the second shear pin 11 is cut, second of pressure testing operation, the i.e. embodiment of the present invention can be carried out
The fracturing sliding bush of offer can carry out pressure testing operation twice, can preferably meet wellbore pressure test requirement, and to pressure test pressure value
It is not required with the pressure testing time.
In order to guarantee that path inner cylinder 4 and major diameter inner cylinder 5 can be moved left and right successfully in operation process, such as 1 institute of attached drawing
Show, the first pressure transmission hole 402 being connected to the first cavity X is provided on the side wall of path inner cylinder 4.It is set on the side wall of major diameter inner cylinder 5
It is equipped with the second pressure transmission hole 501 being connected to the second cavity Y.It is understood that when path inner cylinder 4 and major diameter inner cylinder 5 are to moving to left
When dynamic, the pressure in the first cavity X is discharged from the first pressure transmission hole 402；When path inner cylinder 4 and major diameter inner cylinder 5 move right, the
Pressure in two cavity Y is discharged from the second pressure transmission hole 501.
Further, in order to prevent during completion practice, portion of residual cement enters the first cavity X and second
In cavity Y, butter solid can be set in the first cavity X and the second cavity Y.
It is at low cost in order to guarantee that 6 structure of elastic component is simple, and there is preferably elasticity, bullet can be set by elastic component 6
Spring.
It is located at 6 left side of elastic component it is possible to further setting in the toroidal cavity between major diameter inner cylinder 5 and valve body 2
Baffle ring 12, referring to attached drawing 1.
In order to guarantee that baffle ring 12 can be tightly secured in the toroidal cavity between major diameter inner cylinder 5 and valve body 2, can incite somebody to action
Baffle ring 12 is welded on the outer wall of major diameter inner cylinder 5.
It, can in order to improve the leakproofness between valve body 2 and left connector 1, valve body 2 and right connector 3, valve body 2 and path inner cylinder 4
To be respectively provided with sealing ring between valve body 2 and left connector 1, right connector 3, path inner cylinder 4, major diameter inner cylinder 5.
In order to guarantee that left connector 1 connect fastening with valve body 2, valve body 2 with right connector 3, at the same it is easy to disassemble, a left side can be connect
First 1, valve body 2, right connector 3 are sequentially threadedly coupled.
In order to guarantee that path inner cylinder 4 connect fastening with major diameter inner cylinder 5, while easy to disassemble, the right end of path inner cylinder 4 and big
The left end of diameter inner cylinder 5 is threadedly coupled.
Fracturing sliding bush provided in an embodiment of the present invention has solid particle during entering well and well cementing operation in order to prevent
It slides into, influences subsequent pressure testing operation and establish going on smoothly for pressure break channels operation, the first sandblasting hole 201 and second can be made
Sandblasting hole 401 is blocked by soluble material.Wherein, soluble material is common for this field, for example, it can be
PAG degradation material or magnesium alloy.
In embodiments of the present invention, the pressure for balancing pressure between valve body 2 and major diameter inner cylinder 5 is provided on valve body 2
Compensating groove.
By the way that relief groove is arranged in 2 inner wall right end of valve body, it is ensured that the first sandblasting hole 201 on 2 side wall of valve body with it is small
After the second sandblasting hole 401 connection on 4 side wall of diameter inner cylinder, 5 both ends stress balance of path inner cylinder 4 and major diameter inner cylinder, the first sandblasting
Hole 201 and the second sandblasting hole 401 are in connected state always.
To sum up, deep layer long horizontal sections shale gas well first segment is established (i.e. using fracturing sliding bush provided in an embodiment of the present invention
Front end) operation of pressure break channel when, can carry out wellbore pressure test operation twice, reduce casing deformation, fracturing fluid leakage, because of equipment etc.
Problem and interrupt the complex accidents such as pressure testing operation generation probability.
In addition, shear pin involved in the present invention can be replaced with modes such as rupture disks.Shear pin herein and broken
The opening ways that disk refers to fracturing sliding bush are split, i.e. the fracturing sliding bush can be opened by shear pin, can also be by broken
Split disk unlatching.
The fracturing sliding bush is in oil-gas reservoirs vertical well, high angle hole, the level such as fine and close oily (gas), coal bed gas, shale oil (gas)
It is applicable in well, while being suitable for a variety of completion modes such as barefoot completion, cased hole completion, especially suitable for deep layer long horizontal sections page
Rock gas well first segment fracturing yield increasing rebuilding construction.
The foregoing is merely presently preferred embodiments of the present invention, the protection scope being not intended to limit the invention, all in this hair
Within bright spirit and principle, any modification, equivalent replacement, improvement and so on should be included in protection scope of the present invention
Within.
Claims (10)
1. a kind of fracturing sliding bush, which is characterized in that the fracturing sliding bush includes：Sequentially connected left connector (1), valve from left to right
Body (2), right connector (3) and path inner cylinder (4), major diameter inner cylinder (5), elastic component (6), the first shear pin (7)；
It is provided with the first sandblasting hole (201) on the side wall of the valve body (2), and, the valve body (2) and the path inner cylinder (4)
It is connected by first shear pin (7)；
The path inner cylinder (4) and the connection of the major diameter inner cylinder (5) left and right, are movably set in the valve body (2), institute
It states and is provided on the side wall of path inner cylinder (4) the second sandblasting hole (401), second sandblasting hole (401) is used in the path
It is connected to after inner cylinder (4) is mobile with first sandblasting hole (201)；
The valve body (2), the path inner cylinder (4), the left connector (1) have cooperatively formed the first cavity (X), the valve body
(2), the major diameter inner cylinder (5), the right connector (3) have cooperatively formed the second cavity (Y)；
Toroidal cavity is formed between the major diameter inner cylinder (5) and the valve body (2), the elastic component (6) is arranged in the ring
In shape cavity.
2. fracturing sliding bush according to claim 1, which is characterized in that the fracturing sliding bush further includes：Elastic ring (8), ring
Body (9), the second shear pin (10)；
The inner wall sequentially phase of the outer wall of the path inner cylinder (4) and the ring body (9), the elastic ring (8), the valve body (2)
It supports, and, the elastic ring (8) and the ring body (9) setting are in first cavity (X)；
The ring body (9) is connect with the path inner cylinder (4) by second shear pin (10), and right end is provided with for accommodating
The boss of the elastic ring (8)；
The card slot for accommodating the ring body (9) is provided on the outer wall of the path inner cylinder (4).
3. fracturing sliding bush according to claim 1, which is characterized in that be provided on the side wall of the path inner cylinder (4) with
The first pressure transmission hole (402) of first cavity (X) connection；
The second pressure transmission hole (501) being connected to second cavity (Y) is provided on the side wall of the major diameter inner cylinder (5).
4. fracturing sliding bush according to claim 3, which is characterized in that first cavity (X) and second cavity (Y)
Inside it is provided with high-temp solid butter.
5. fracturing sliding bush according to claim 1, which is characterized in that the elastic component (6) is spring.
6. fracturing sliding bush according to claim 5, which is characterized in that between the major diameter inner cylinder (5) and the valve body (2)
Toroidal cavity in be provided with baffle ring (11) on the left of the elastic component (6).
7. fracturing sliding bush according to claim 1, which is characterized in that the valve body (2) and the left connector (1), described
Right connector (3), the path inner cylinder (4) are provided with sealing ring between the major diameter inner cylinder (5).
8. fracturing sliding bush according to claim 1, which is characterized in that the left connector (1), the valve body (2), the right side
Connector (3) is sequentially threadedly coupled.
9. fracturing sliding bush according to claim 1, which is characterized in that the right end of the path inner cylinder (4) and the major diameter
The left end of inner cylinder (5) is threadedly coupled.
10. fracturing sliding bush according to claim 1, which is characterized in that first sandblasting hole (201) and second spray
Sand hole (401) is blocked by soluble material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810953959.5A CN108868694B (en) | 2018-08-21 | 2018-08-21 | Fracturing sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810953959.5A CN108868694B (en) | 2018-08-21 | 2018-08-21 | Fracturing sliding sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108868694A true CN108868694A (en) | 2018-11-23 |
| CN108868694B CN108868694B (en) | 2020-09-04 |
Family
ID=64320897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810953959.5A Active CN108868694B (en) | 2018-08-21 | 2018-08-21 | Fracturing sliding sleeve |
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| Country | Link |
|---|---|
| CN (1) | CN108868694B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080741A (en) * | 2019-05-24 | 2019-08-02 | 盐城市弘通石油机械有限公司 | It is a kind of efficiently easily to open sand blower of sliding sleeve |
| CN111021990A (en) * | 2019-12-18 | 2020-04-17 | 中国石油天然气股份有限公司 | Soluble toe end sliding sleeve for well cementation and completion and using method thereof |
| CN111622710A (en) * | 2020-06-09 | 2020-09-04 | 中国石油天然气集团有限公司 | High-pressure activation pressure guide mechanism of sliding sleeve tool and use method |
| CN115478807A (en) * | 2021-06-16 | 2022-12-16 | 中石化石油工程技术服务有限公司 | Full latus rectum switch well cementation sliding sleeve |
| CN117684941A (en) * | 2024-02-02 | 2024-03-12 | 新疆石油管理局有限公司 | Double-seal repeated transformation device and method for horizontal well with pressurized combined tubular column |
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| CN111021990B (en) * | 2019-12-18 | 2023-07-25 | 中国石油天然气股份有限公司 | Toe-soluble end sliding sleeve for well cementation and completion and use method thereof |
| CN111622710A (en) * | 2020-06-09 | 2020-09-04 | 中国石油天然气集团有限公司 | High-pressure activation pressure guide mechanism of sliding sleeve tool and use method |
| CN111622710B (en) * | 2020-06-09 | 2023-10-13 | 中国石油天然气集团有限公司 | High-pressure activation pressure guide mechanism of sliding sleeve tool and use method |
| CN115478807A (en) * | 2021-06-16 | 2022-12-16 | 中石化石油工程技术服务有限公司 | Full latus rectum switch well cementation sliding sleeve |
| CN117684941A (en) * | 2024-02-02 | 2024-03-12 | 新疆石油管理局有限公司 | Double-seal repeated transformation device and method for horizontal well with pressurized combined tubular column |
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