CN217001784U - Sliding sleeve check valve device - Google Patents
Sliding sleeve check valve device Download PDFInfo
- Publication number
- CN217001784U CN217001784U CN202220021900.4U CN202220021900U CN217001784U CN 217001784 U CN217001784 U CN 217001784U CN 202220021900 U CN202220021900 U CN 202220021900U CN 217001784 U CN217001784 U CN 217001784U
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- sliding sleeve
- valve body
- ball
- check valve
- steel ball
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Abstract
The utility model relates to the technical field of downhole tools for oil extraction operation, in particular to a sliding sleeve check valve device; the ball baffle comprises a ball baffle rail, a valve body, a steel ball, a sliding sleeve and a lower joint; the valve body and the lower connector are fixedly installed together, the inner side of the middle part of the valve body is connected with a sliding sleeve through at least one shear pin, the steel ball is seated at the top of the sliding sleeve, the ball retaining fence capable of retaining the steel ball is fixedly installed on the inner side of the upper part of the valve body, at least one backwashing channel is arranged on the middle part of the lower connector, and a limiting table capable of retaining the sliding sleeve is integrally fixed on the inner side of the lower end of the lower connector. The utility model has reasonable and compact structure and convenient use, can directly carry out oil pumping operation after one-time fracturing of the tubular column by matching the ball baffle, the valve body, the steel ball, the sliding sleeve and the lower joint, can realize the purpose of carrying out reverse circulation hot washing wax removal operation without moving the tubular column if the wax content is higher in the oil pumping process, has the characteristics of safety, reliability and strong universality, is convenient to operate, improves the working efficiency and greatly reduces the production cost.
Description
Technical Field
The utility model relates to the technical field of downhole tools for oil extraction operation, in particular to a sliding sleeve check valve device.
Background
After a period of production, the problems of insufficient liquid supply, sand production and the like in the well always occur, the normal production activity is seriously influenced, and at the moment, the measure operation is required to be carried out. General measure operation includes fracturing, acidizing, deblocking, sand control etc. and to the professional measure scheme of different well needs, the pertinence solution problem, all need use the packer in these measures to keep apart the operation to measure the position, prevent to influence other normal positions. In the setting process of the packer, a sliding sleeve valve is needed to realize normal setting after the packer is pressurized, and the smoothness of the drift diameter in the oil pipe can be ensured, so that positive and negative well washing or positive circulation fracturing operation is realized. At present, a sliding sleeve valve is used for fracturing operation, a sliding sleeve valve core is knocked off through high pressure after a packer is set, then fracturing measures are carried out, a fracturing pipe column is put in after fracturing, and oil extraction operation is carried out. For oil pumping operation, the packer is set and then pumping operation is realized through a check valve, but the pipe column is not suitable for wells needing hot washing and paraffin removal, and the oil pumping pipe column is required to be specially put into a hot washing valve for paraffin removal and then put into the oil pumping pipe column again for operation; the existing operation mode needs different valves to adapt to different operations, and the valves cannot be used universally, so that the problems of low operation efficiency and high operation cost are caused.
Disclosure of Invention
The utility model provides a sliding sleeve check valve device, overcomes the defects of the prior art, and can effectively solve the problems that the prior operation mode needs different valves to adapt to different operations, and the valves cannot be used universally, so that the operation efficiency is low and the operation cost is high.
The technical scheme of the utility model is realized by the following measures: a sliding sleeve check valve device comprises a ball blocking fence, a valve body, a steel ball, a sliding sleeve and a lower connector; the lower outer side of the valve body and the upper inner side of the lower connector are fixedly installed together, the middle inner side of the valve body is connected with a sliding sleeve through at least one shear pin, a steel ball is seated on the top of the sliding sleeve, a ball blocking fence capable of blocking the steel ball is fixedly installed on the upper inner side of the valve body, at least one backwashing channel is arranged in the middle of the lower connector, and a limiting table capable of blocking the sliding sleeve is integrally fixed on the lower inner side of the lower connector.
The following are further optimization or/and improvement of the technical scheme of the utility model:
the inner side surface of the upper end of the sliding sleeve is an inclined surface which is wide at the top and narrow at the bottom.
6 to 8 backwashing channels are symmetrically arranged in the middle of the lower joint.
The backwashing channel is a long hole in the vertical direction.
The sliding sleeve and the valve body are connected together through 2 to 8 shear pins.
The upper part of the valve body is provided with an internal thread, and the lower part of the lower joint is provided with an external thread.
At least one sealing ring is arranged between the sliding sleeve and the valve body; the valve body and the lower joint are fixedly installed together through threads; the ball blocking rail and the valve body are fixedly installed together through threads.
The utility model has reasonable and compact structure and convenient use, can directly carry out oil pumping operation after one-time fracturing of the tubular column by matching the ball baffle, the valve body, the steel ball, the sliding sleeve and the lower joint, can realize the purpose of carrying out reverse circulation hot washing wax removal operation without moving the tubular column if the wax content is higher in the oil pumping process, has the characteristics of safety, reliability and strong universality, is convenient to operate, improves the working efficiency and greatly reduces the production cost.
Drawings
FIG. 1 is a front view of a semi-sectional structural schematic of a preferred embodiment of the present invention.
The codes in the figures are respectively: 1 is the ball retaining fence, 2 is the valve body, 3 is the steel ball, 4 is the sliding sleeve, 5 is the lower clutch, 6 is the shear pin, 7 is the backwash passageway, 8 is spacing platform, 9 is the sealing washer.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments may be determined according to the technical solutions and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of the components is described according to the layout pattern of fig. 1 of the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of fig. 1 of the specification.
The utility model is further described with reference to the following examples and figures:
as shown in the attached figure 1, the sliding sleeve check valve device comprises a ball blocking fence 1, a valve body 2, a steel ball 3, a sliding sleeve 4 and a lower joint 5; the lower part outside of valve body 2 and the inboard fixed mounting in upper portion of lower clutch 5 are in the same place, and inboard 6 through at least one shear pin in the middle part of valve body 2 is connected with sliding sleeve 4, and steel ball 3 sits at the top of sliding sleeve 4, and inboard fixed mounting in the upper portion of valve body 2 has the fender ball fence 1 that can block steel ball 3, is equipped with at least one backwash passageway 7 in the middle part of lower clutch 5, is fixed with the spacing platform 8 that can block sliding sleeve 4 at the lower extreme inboard an organic whole of lower clutch 5. The ball baffle fence 1 is known and used in the prior art, can be a ball baffle fence with a grid baffle arranged in a circular ring, or can be a ball baffle fence with a cross-shaped partition plate arranged in a circular ring, and the outer diameter of the steel ball 3 can be smaller than or equal to that of the ball baffle fence 1, so that if reverse circulation hot washing paraffin removal operation is carried out before the shear pin 6 is not sheared, the steel ball 3 is blocked by the ball baffle fence 1, and meanwhile, reverse circulation hot washing paraffin removal fluid can smoothly flow through the ball baffle fence 1; like this, through the cooperation use of ball blocking fence 1, valve body 2, steel ball 3, sliding sleeve 4 and lower clutch 5, can directly carry out the oil pumping operation after realizing one-time tubular column fracturing, if the wax content is higher at the oil pumping in-process, can not move the purpose that the tubular column carries out reverse circulation hot washing paraffin removal operation, have safe and reliable and characteristics that the commonality is strong, made things convenient for the operation, improved work efficiency, greatly reduced manufacturing cost. Meanwhile, the utility model can also be used in a sand control pipe column to realize the setting operation of a sand control packer, so the utility model has the universality of measure operation and is not limited in fracturing, oil pumping and sand control pipe columns; the problems of high measure operation cost and low working efficiency caused by multiple times of running in the existing mode are solved.
The sliding sleeve check valve device can be further optimized or/and improved according to actual needs:
as shown in the attached figure 1, the inner side surface of the upper end of the sliding sleeve 4 is an inclined surface with a wide upper part and a narrow lower part. Therefore, the steel ball 3 can be conveniently seated on the inclined plane of the sliding sleeve 4, and a better sealing effect is achieved.
And 6 to 8 backwashing channels 7 are symmetrically arranged in the middle of the lower joint 5 according to requirements. Thus, the symmetrical arrangement of 6 to 8 backwashing channels 7 facilitates better hot washing paraffin removal operation and oil pumping operation.
As shown in fig. 1, the backwash channel 7 is a vertically elongated hole. Thus, the backwashing channel 7 is a long hole, which is convenient for better hot washing paraffin removal operation and oil pumping operation.
The sliding sleeve 4 and the valve body 2 are connected together by 2 to 8 shear pins 6 as required. Like this, connect through 2 to 8 shear pins 6 and both can guarantee reliability and the safe setting that sliding sleeve 4 and valve body 2 are connected, can guarantee again to seal the operation after, continue to suppress and make all shear pins 6 cut.
As shown in fig. 1, an internal thread is provided on the upper portion of the valve body 2, and an external thread is provided on the lower portion of the lower joint 5. Thus, the internal thread on the valve body 2 facilitates the installation and the disassembly of the valve body 2; the external thread on the lower joint 5 facilitates the mounting and dismounting of the lower joint 5.
As shown in the attached figure 1, at least one sealing ring 9 is arranged between the sliding sleeve 4 and the valve body 2; the valve body 2 and the lower joint 5 are fixedly installed together through threads; the ball baffle 1 and the valve body 2 are fixedly installed together through threads. Thus, the sealing ring 9 is convenient to have better sealing effect; through the thread fixing installation, the valve body 2 and the lower joint 5 are convenient to install and detach, and the ball baffle fence 1 and the valve body 2 are convenient to install and detach.
The working process of the utility model is as follows: when the packer works, the packer is connected to a pipe column below the packer and is put into a well together, the pipe column is pressed through an oil pipe, the steel ball 3 is seated on the sliding sleeve 4 for sealing, and the packer is normally seated under the action of pressure; if the paraffin removal can be carried out through the backwashing channel 7, the reverse circulation hot washing paraffin removal operation is carried out, the steel ball 3 is blocked by the ball blocking fence 1, and the reverse circulation hot washing paraffin removal fluid can smoothly pass through the ball blocking fence 1; if the paraffin removal is not performed at the moment, the pressure can be continuously applied to cut off the shear pin 6 connected between the sliding sleeve 4 and the valve body 2, the sliding sleeve 4 descends together with the steel ball 3, the lower end of the sliding sleeve 4 is seated on the limiting table 8 of the lower joint 5, the backwashing channel 7 on the lower joint 5 is located above the steel ball 3, if the paraffin content is high in the operation process, the reverse circulation hot washing paraffin removal operation can be performed through the backwashing channel 7 without moving a pipe column, and after the paraffin removal is completed, the fracturing acidification operation and the oil pumping operation can be directly performed.
The above technical features constitute the best embodiment of the present invention, which has strong adaptability and best implementation effect, and unnecessary technical features can be increased or decreased according to actual needs to meet the requirements of different situations.
Claims (10)
1. A sliding sleeve check valve device is characterized by comprising a ball blocking fence, a valve body, a steel ball, a sliding sleeve and a lower joint; the lower outer side of the valve body and the upper inner side of the lower connector are fixedly installed together, the middle inner side of the valve body is connected with a sliding sleeve through at least one shear pin, a steel ball is seated on the top of the sliding sleeve, a ball blocking fence capable of blocking the steel ball is fixedly installed on the upper inner side of the valve body, at least one backwashing channel is arranged in the middle of the lower connector, and a limiting table capable of blocking the sliding sleeve is integrally fixed on the lower inner side of the lower connector.
2. The sliding sleeve check valve device of claim 1, wherein the inner side of the upper end of the sliding sleeve is a slope with a wide upper part and a narrow lower part.
3. The sliding sleeve check valve device as recited in claim 1 or 2, wherein the middle of the lower joint is symmetrically provided with 6 to 8 backwashing channels.
4. The sliding sleeve check valve device of claim 3, wherein the backwash channel is vertically elongated.
5. The sliding sleeve check valve device of claim 1 or 2, wherein the sliding sleeve and the valve body are connected together by 2 to 8 shear pins.
6. The sliding sleeve check valve assembly of claim 4, wherein the sliding sleeve and the valve body are coupled together by 2 to 8 shear pins.
7. The sliding sleeve check valve device as recited in claim 1 or 2, wherein the valve body has an internal thread at an upper portion thereof and an external thread at a lower portion thereof.
8. The sliding sleeve check valve assembly of claim 6, wherein the valve body has internal threads on an upper portion thereof and external threads on a lower portion thereof.
9. The sliding sleeve check valve device of claim 1 or 2, wherein at least one sealing ring is installed between the sliding sleeve and the valve body; the valve body and the lower joint are fixedly installed together through threads; the ball blocking rail and the valve body are fixedly installed together through threads.
10. The sliding sleeve check valve assembly of claim 8, wherein at least one seal is disposed between the sliding sleeve and the valve body; the valve body and the lower joint are fixedly installed together through threads; the ball blocking rail and the valve body are fixedly installed together through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220021900.4U CN217001784U (en) | 2022-01-06 | 2022-01-06 | Sliding sleeve check valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220021900.4U CN217001784U (en) | 2022-01-06 | 2022-01-06 | Sliding sleeve check valve device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217001784U true CN217001784U (en) | 2022-07-19 |
Family
ID=82388596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220021900.4U Active CN217001784U (en) | 2022-01-06 | 2022-01-06 | Sliding sleeve check valve device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217001784U (en) |
-
2022
- 2022-01-06 CN CN202220021900.4U patent/CN217001784U/en active Active
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