CN211144460U - Switchable multifunctional sliding sleeve - Google Patents
Switchable multifunctional sliding sleeve Download PDFInfo
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- CN211144460U CN211144460U CN201922161517.XU CN201922161517U CN211144460U CN 211144460 U CN211144460 U CN 211144460U CN 201922161517 U CN201922161517 U CN 201922161517U CN 211144460 U CN211144460 U CN 211144460U
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- outer sliding
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Abstract
The utility model relates to the technical field of oil field machinery, in particular to a switchable multifunctional sliding sleeve; it comprises a body, an outer sliding sleeve and an inner sliding sleeve; the inner side of the body is sleeved with an outer sliding sleeve, the upper part of the body and the outer sliding sleeve corresponding to the position are provided with at least one liquid flow hole which is communicated with each other, the middle part of the outer sliding sleeve is provided with at least three openings in the vertical direction along the circumferential interval, the outer edge of the outer sliding sleeve corresponding to the opening position is fixedly connected with an elastic claw, and the inner side of the lower part of the outer sliding sleeve is fixedly provided with a limiting block which can be adjusted up and down. The utility model has reasonable and compact structure and convenient use, realizes the purpose of smooth and unimpeded inner path of the pipe column after fracturing is finished by matching the body, the outer sliding sleeve, the inner sliding sleeve and the spring, and ensures the smooth proceeding of subsequent operation; the fracturing fluid has the characteristics of safety, reliability and high pressure-bearing level, is suitable for various different fracturing environments, facilitates operation, improves working efficiency and ensures the production cycle.
Description
Technical Field
The utility model relates to an oil field machinery technical field is a but multi-functional sliding sleeve of switch.
Background
The fracturing technology is one of the main modes of oil reservoir reconstruction and unconventional oil and gas reservoir development at present, and plays an irreplaceable role in the aspects of potential oil reservoir exploitation and synergy and potential oil reservoir exploitation. The conventional fracturing sliding sleeve in fracturing generally adopts ball throwing and pressing, and after the sliding sleeve moves downwards for a certain distance, the liquid flow hole is opened and the lower layer is blocked. When fracturing is completed, the sliding sleeve and the ball are still left in the oil pipe to block an oil pipe channel, and operations such as testing and the like can be completed only by lifting out the fracturing string and lowering the oil production string again, or the fracturing ball is a soluble ball, but the dissolving speed of the soluble ball is 20 days to 30 days, so that the workload is increased, and the production cycle is influenced.
Disclosure of Invention
The utility model provides a but multi-functional sliding sleeve of switch has overcome above-mentioned prior art not enough, and it can effectively solve current fracturing sliding sleeve and need throw the ball and suppress, has sliding sleeve and ball to stay and block up the oil pipe passageway in oil pipe after the fracturing is accomplished, and influences the problem of cycle of producing on.
The technical scheme of the utility model is realized through following measure: a switchable multifunctional sliding sleeve comprises a body, an outer sliding sleeve and an inner sliding sleeve; an outer sliding sleeve is sleeved on the inner side of the body, at least one through liquid flow hole is arranged on the upper portion of the body and the outer sliding sleeve corresponding to the position, at least three openings in the vertical direction are arranged in the middle of the outer sliding sleeve at intervals along the circumference, an elastic claw is fixedly connected to the outer edge of the outer sliding sleeve corresponding to the position of the opening and is positioned in the corresponding opening, a claw table is integrally fixed on the outer side of the lower end of the elastic claw, a limiting block capable of being adjusted up and down is fixedly installed on the inner side of the lower portion of the outer sliding sleeve, a locking groove capable of containing the claw table is arranged on the inner side of the lower portion of the body, the claw table on the elastic claw is positioned in the locking groove, an inner sliding sleeve capable of blocking the liquid flow hole is sleeved on the inner side of the outer sliding sleeve, an annular clamping table is integrally fixed on the outer side of the middle of the inner sliding sleeve, a spring, the lower end seat of the annular clamping table is arranged on the upper end face of the spring, and the body, the outer sliding sleeve and the inner sliding sleeve are fixedly connected together through at least one shearing pin.
The following are further optimization or/and improvement of the technical scheme of the utility model:
the limiting block is an adjusting nut; the lower inner side of the outer sliding sleeve and the outer side of the limiting block are respectively provided with matched threads, and the limiting block is fixedly arranged on the lower inner side of the outer sliding sleeve through the threads.
The outer ring groove is arranged on the outer side of the lower part of the inner sliding sleeve, and the upper part of the spring is positioned in the outer ring groove of the inner sliding sleeve.
The outer side surface of the lower part of the claw table is an inclined plane with a wide upper part and a narrow lower part, and the lower part of the locking groove is an inclined plane with a wide upper part and a narrow lower part; the inner side surface of the upper end of the inner sliding sleeve is an inclined plane with a wide upper part and a narrow lower part, and the inner side surface of the upper end of the outer sliding sleeve is an inclined plane with a wide upper part and a narrow lower part.
The liquid flow hole is a vertically long hole, and the upper part and the lower part of the liquid flow hole are both arc-shaped; and/or the upper part of the body is provided with an external thread or/and an internal thread, and the lower part of the body is provided with an external thread or/and an internal thread.
At least one sealing ring is arranged between the body and the outer sliding sleeve, and at least one sealing ring is arranged between the outer sliding sleeve and the inner sliding sleeve.
The utility model has reasonable and compact structure and convenient use, realizes the purpose of smooth and unimpeded inner path of the pipe column after fracturing is finished by matching the body, the outer sliding sleeve, the inner sliding sleeve and the spring, and ensures the smooth proceeding of subsequent operation; the fracturing fluid has the characteristics of safety, reliability and high pressure-bearing level, is suitable for various different fracturing environments, facilitates operation, improves working efficiency and ensures the production cycle.
Drawings
Fig. 1 is a schematic front view of a half-sectional structure of a preferred embodiment of the present invention.
The codes in the figures are respectively: the structure comprises a body 1, an outer sliding sleeve 2, an inner sliding sleeve 3, a liquid flow hole 4, an opening 5, elastic claws 6, claw platforms 7, limiting blocks 8, locking grooves 9, annular clamping platforms 10, springs 11, shearing pins 12, outer ring grooves 13 and sealing rings 14.
Detailed Description
The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.
In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in 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 invention will be further described with reference to the following examples and drawings:
as shown in the attached figure 1, the openable multifunctional sliding sleeve comprises a body 1, an outer sliding sleeve 2 and an inner sliding sleeve 3; an outer sliding sleeve 2 is sleeved on the inner side of a body 1, at least one through liquid flow hole 4 is arranged on the upper portion of the body 1 and the outer sliding sleeve 2 corresponding to the position, at least three openings 5 in the vertical direction are arranged in the middle of the outer sliding sleeve 2 along the circumference at intervals, an elastic claw 6 is fixedly connected on the outer edge of the outer sliding sleeve 2 corresponding to the position of the opening 5, the elastic claw 6 is positioned in the corresponding opening 5, a claw table 7 is integrally fixed on the outer side of the lower end of the elastic claw 6, a limiting block 8 capable of being adjusted up and down is fixedly arranged on the inner side of the lower portion of the outer sliding sleeve 2, a locking groove 9 capable of accommodating the claw table 7 is arranged on the inner side of the lower portion of the body 1, the claw table 7 on the elastic claw 6 is positioned in the locking groove 9, an inner sliding sleeve 3 capable of blocking the liquid flow hole 4 is sleeved on the inner side of the outer sliding sleeve 2, an annular clamping table 10 is, the upper end face of the annular clamping table 10 is abutted against the inner edge of the outer sliding sleeve 2 corresponding to the position of the opening 5, the lower end of the annular clamping table 10 is seated on the upper end face of the spring 11, and the body 1, the outer sliding sleeve 2 and the inner sliding sleeve 3 are fixedly connected together through at least one shearing pin 12. The shear pin 12 is publicly known, the shear pin 12 is made of metal, and the shear force is adjustable; the shear pin 12 can also be a double-stage shear pin, namely when a small steel ball is put into and is pressed, a section (first stage) of the shear pin 12 connected with the inner sliding sleeve 3 and the outer sliding sleeve 2 is firstly cut off, and when a large steel ball is put into and is pressed, the other section (second stage) of the shear pin 12 connected with the outer sliding sleeve 2 and the body 1 is then cut off; therefore, the purpose that the inner drift diameter of the pipe column is smooth and unobstructed after fracturing is finished is achieved by the matched use of the body 1, the outer sliding sleeve 2, the inner sliding sleeve 3 and the spring 11, and the smooth proceeding of subsequent operation is ensured; the fracturing fluid has the characteristics of safety, reliability and high pressure-bearing level, is suitable for various different fracturing environments, facilitates operation, improves working efficiency and ensures the production cycle.
The switchable multifunctional sliding sleeve can be further optimized or/and improved according to the actual requirement:
as shown in the attached figure 1, the limiting block 8 is an adjusting nut; the lower part of the outer sliding sleeve 2 is provided with a thread and the outer side of the limiting block 8 is provided with a thread which is matched with the inner side of the lower part of the outer sliding sleeve 2, and the limiting block 8 is fixedly arranged at the inner side of the lower part of the outer sliding sleeve 2 through the thread. Thus, the height of the nut can be adjusted by adjusting the nut, thereby adjusting the elastic force of the spring 11.
As shown in FIG. 1, an outer annular groove 13 is formed on the outer side of the lower portion of the inner sliding sleeve 3, and the upper portion of the spring 11 is positioned in the outer annular groove 13 of the inner sliding sleeve 3. Thus, the lower outer ring groove 13 of the inner sliding sleeve 3 can play a role in righting the spring 11.
As shown in fig. 1, the outer side surface of the lower part of the claw table 7 is an inclined surface with a wide upper part and a narrow lower part, and the lower part of the locking groove 9 is an inclined surface with a wide upper part and a narrow lower part; the inner side surface of the upper end of the inner sliding sleeve 3 is an inclined plane with a wide upper part and a narrow lower part, and the inner side surface of the upper end of the outer sliding sleeve 2 is an inclined plane with a wide upper part and a narrow lower part. Thus, the lower outer slope of the claw table 7 is seated on the lower slope of the locking groove 9.
As shown in fig. 1, the liquid flow hole 4 is a vertically elongated hole, and both the upper part and the lower part of the liquid flow hole 4 are arc-shaped; or/and an external thread or/and an internal thread is/are arranged on the upper part of the body 1, and an external thread or/and an internal thread is/are arranged on the lower part of the body 1. Therefore, the liquid flow hole 4 is a long hole in the vertical direction, and can meet the requirements of sand blasting and large-discharge liquid drainage; the external threads or/and the internal threads of the upper and lower portions of the body 1 facilitate the mounting and dismounting of the body 1.
As shown in the attached figure 1, at least one sealing ring 14 is installed between the body 1 and the outer sliding sleeve 2, and at least one sealing ring 14 is installed between the outer sliding sleeve 2 and the inner sliding sleeve 3. Thus, the sealing ring 14 facilitates the sealing between the body 1 and the outer sliding sleeve 2, and facilitates the sealing between the outer sliding sleeve 2 and the inner sliding sleeve 3.
The utility model has the advantages that:
(1) the utility model discloses control liquid flow hole 4, well-flushing in-process and establish circulation channel in the mainly used fracturing operation, realize opening the orientation of target layer to select new shutoff position or squeeze into oil pipe bottom or shaft bottom with outer sliding sleeve 2, inner sliding sleeve 3, spring 11 and stopper 8 together after the fracturing is accomplished, realize unblocked in the oil pipe, can carry out motionless tubular column test operation or direct pump production down.
(2) The utility model discloses compact structure, safe and reliable, the pressure-bearing level is high, be applicable to in the fracturing environment of various differences, can lock outer sliding sleeve 2 after inner sliding sleeve 3 moves down, make outer sliding sleeve 2 be unlikely to be cut when high pressure at the fracturing in-process, after the fracturing is accomplished, inner sliding sleeve 3 shifts up under spring 11's effect, the locking has been removed and the shutoff has been prevented sand from spitting in the liquid flow hole 4, after dropping into the big ball, can wholly squeeze into outer sliding sleeve 2, inner sliding sleeve 3, spring 11 and stopper 8 oil pipe bottom or shaft bottom, the straight-through diameter is unblocked in the realization tubular column.
(3) The elastic claw 6 is of a split claw structure, the outer portion is smooth and clean, the claw table 7 on the elastic claw 6 can be embedded into the locking groove 9, and the position of the outer sliding sleeve 2 is locked after the inner sliding sleeve 3 moves downwards for a certain distance.
(4) The liquid flow hole 4 is a long round through hole which is specially processed, has certain strength and can meet the requirements of sand blasting and large-discharge liquid discharging.
Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.
The utility model discloses a use: when in use, the utility model is installed between oil pipe columns through the upper internal thread and the lower external thread of the body 1, and then the utility model is put into the well along with the oil pipe columns and is pressed to a designated position, the small steel ball is firstly put into, so that the small steel ball seat is arranged on the inner side inclined plane of the upper end of the inner sliding sleeve 3, and then the small steel ball is pressed by a pump truck, so that the shearing pin 12 connected with the outer sliding sleeve 2 of the inner sliding sleeve 3 is cut off, the small steel ball and the inner sliding sleeve 3 move downwards for a certain distance and extrude the spring 11 to expose the body 1 and the liquid flow hole 4 on the outer sliding sleeve 2, and fracturing liquid enters the stratum through the liquid flow hole 4 to perform fracturing operation, and simultaneously plays the purpose of plugging the lower layer, at the moment, the annular clamping table 10 on the inner sliding sleeve 3 supports the elastic claw 6, so that the claw; after fracturing is completed, a large steel ball is put in, the large steel ball is located on the inner side inclined plane of the upper end of the outer sliding sleeve 2, the pressure acting on the small steel ball is reduced, the inner sliding sleeve 3 moves upwards under the action of the spring 11, the annular clamping table 10 on the inner sliding sleeve 3 cannot play a role of supporting the elastic claw 6 at the moment, and the pressing is continued, so that the shearing pin 12 connected with the outer sliding sleeve 2 is cut off, the claw table 7 on the elastic claw 6 extrudes the lower inner inclined plane of the locking groove 9, the claw table 7 on the elastic claw 6 is separated from the locking groove 9, the pressing is continued, the outer sliding sleeve 2, the inner sliding sleeve 3, the spring 11 and the limiting block 8 are driven into the bottom of a well or a pipe column, and an oil pipe channel is.
Claims (10)
1. A switchable multifunctional sliding sleeve is characterized by comprising a body, an outer sliding sleeve and an inner sliding sleeve; an outer sliding sleeve is sleeved on the inner side of the body, at least one through liquid flow hole is arranged on the upper portion of the body and the outer sliding sleeve corresponding to the position, at least three openings in the vertical direction are arranged in the middle of the outer sliding sleeve at intervals along the circumference, an elastic claw is fixedly connected to the outer edge of the outer sliding sleeve corresponding to the position of the opening and is positioned in the corresponding opening, a claw table is integrally fixed on the outer side of the lower end of the elastic claw, a limiting block capable of being adjusted up and down is fixedly installed on the inner side of the lower portion of the outer sliding sleeve, a locking groove capable of containing the claw table is arranged on the inner side of the lower portion of the body, the claw table on the elastic claw is positioned in the locking groove, an inner sliding sleeve capable of blocking the liquid flow hole is sleeved on the inner side of the outer sliding sleeve, an annular clamping table is integrally fixed on the outer side of the middle of the inner sliding sleeve, a spring, the lower end seat of the annular clamping table is arranged on the upper end face of the spring, and the body, the outer sliding sleeve and the inner sliding sleeve are fixedly connected together through at least one shearing pin.
2. The switchable multifunctional sliding sleeve according to claim 1, wherein the limiting block is an adjusting nut; the lower inner side of the outer sliding sleeve and the outer side of the limiting block are respectively provided with matched threads, and the limiting block is fixedly arranged on the lower inner side of the outer sliding sleeve through the threads.
3. The openable and closable multifunctional sliding bush according to claim 1 or 2, wherein the outer side of the lower portion of the inner sliding bush is provided with an outer annular groove, and the upper portion of the spring is positioned in the outer annular groove of the inner sliding bush.
4. The switchable multifunctional sliding sleeve according to claim 1 or 2, wherein the outer side surface of the lower part of the claw table is an inclined surface with a wide upper part and a narrow lower part, and the lower part of the locking groove is an inclined surface with a wide upper part and a narrow lower part; the inner side surface of the upper end of the inner sliding sleeve is an inclined plane with a wide upper part and a narrow lower part, and the inner side surface of the upper end of the outer sliding sleeve is an inclined plane with a wide upper part and a narrow lower part.
5. The switchable multifunctional sliding sleeve according to claim 3, wherein the outer side surface of the lower part of the claw stage is an inclined surface with a wide upper part and a narrow lower part, and the lower part of the locking groove is an inclined surface with a wide upper part and a narrow lower part; the inner side surface of the upper end of the inner sliding sleeve is an inclined plane with a wide upper part and a narrow lower part, and the inner side surface of the upper end of the outer sliding sleeve is an inclined plane with a wide upper part and a narrow lower part.
6. The switchable multifunctional sliding sleeve according to claim 1 or 2, wherein the liquid flow hole is a vertically elongated hole, and both the upper part and the lower part of the liquid flow hole are arc-shaped; and/or the upper part of the body is provided with an external thread or/and an internal thread, and the lower part of the body is provided with an external thread or/and an internal thread.
7. The switchable multifunctional sliding sleeve according to claim 3, wherein the liquid flow hole is a vertically elongated hole, and both the upper part and the lower part of the liquid flow hole are arc-shaped; and/or the upper part of the body is provided with an external thread or/and an internal thread, and the lower part of the body is provided with an external thread or/and an internal thread.
8. The switchable multifunctional sliding sleeve according to claim 5, wherein the liquid flow hole is a vertically elongated hole, and both the upper part and the lower part of the liquid flow hole are arc-shaped; and/or the upper part of the body is provided with an external thread or/and an internal thread, and the lower part of the body is provided with an external thread or/and an internal thread.
9. The switchable multifunctional sliding sleeve according to claim 1 or 2, wherein at least one sealing ring is installed between the body and the outer sliding sleeve, and at least one sealing ring is installed between the outer sliding sleeve and the inner sliding sleeve.
10. The switchable multifunctional sliding sleeve according to claim 8, wherein at least one sealing ring is installed between the body and the outer sliding sleeve, and at least one sealing ring is installed between the outer sliding sleeve and the inner sliding sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922161517.XU CN211144460U (en) | 2019-12-05 | 2019-12-05 | Switchable multifunctional sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922161517.XU CN211144460U (en) | 2019-12-05 | 2019-12-05 | Switchable multifunctional sliding sleeve |
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| Publication Number | Publication Date |
|---|---|
| CN211144460U true CN211144460U (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922161517.XU Active CN211144460U (en) | 2019-12-05 | 2019-12-05 | Switchable multifunctional sliding sleeve |
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| CN (1) | CN211144460U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356794A (en) * | 2021-06-04 | 2021-09-07 | 西南石油大学 | Full-diameter infinite-grade intelligent switch sliding sleeve |
| CN115478806A (en) * | 2021-05-31 | 2022-12-16 | 中国石油天然气股份有限公司 | Device and method for temporarily plugging operation of pressing oil pipe under gas well area |
-
2019
- 2019-12-05 CN CN201922161517.XU patent/CN211144460U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115478806A (en) * | 2021-05-31 | 2022-12-16 | 中国石油天然气股份有限公司 | Device and method for temporarily plugging operation of pressing oil pipe under gas well area |
| CN115478806B (en) * | 2021-05-31 | 2023-11-28 | 中国石油天然气股份有限公司 | Device and method for temporarily plugging gas well under pressure oil pipe operation |
| CN113356794A (en) * | 2021-06-04 | 2021-09-07 | 西南石油大学 | Full-diameter infinite-grade intelligent switch sliding sleeve |
| CN113356794B (en) * | 2021-06-04 | 2021-12-07 | 西南石油大学 | Full-diameter infinite-grade intelligent switch sliding sleeve |
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