CN204200202U - A kind of Limited entry fracturing sliding sleeve - Google Patents
A kind of Limited entry fracturing sliding sleeve Download PDFInfo
- Publication number
- CN204200202U CN204200202U CN201420632151.4U CN201420632151U CN204200202U CN 204200202 U CN204200202 U CN 204200202U CN 201420632151 U CN201420632151 U CN 201420632151U CN 204200202 U CN204200202 U CN 204200202U
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- sliding sleeve
- ball seat
- outer sleeve
- sleeve
- inner sliding
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Abstract
The utility model relates to current limliting staged fracturing technical field, disclose a kind of Limited entry fracturing sliding sleeve, it comprises top connection, lower contact, outer sleeve, inner sliding sleeve and ball seat, described top connection is fixedly connected with the upper end of described outer sleeve, described lower contact is fixedly connected with the lower end of described outer sleeve, described inner sliding sleeve is socketed in the inner chamber of described outer sleeve, the outer wall of described inner sliding sleeve is connected by connector with the inwall of outer sleeve, described ball seat is arranged in the described outer sleeve between described top connection and inner sliding sleeve, described ball seat is formed by multiple ball seat Split assembled, multiple described ball seat split is fastened togather by jump ring, and be fastened on the relevant position of described outer sleeve by described jump ring, position relative with described inner sliding sleeve on described outer sleeve is also provided with sandblasting hole and jump-ring slot.The utility model structure is simple, and the course of work is reliable, can improve the hierarchical level of Limited entry fracturing sliding sleeve.
Description
Technical field
The utility model relates to oil field open hole well current limliting staged fracturing technical field, particularly relates to a kind of Limited entry fracturing sliding sleeve.
Background technology
In open-hole horizontal well acidifying, fracturing yield increasing renovation technique, normally adopt open hole packer to coordinate fracturing sliding bush to realize segmentation, by the configuration pressure break ball of different size and the fracturing sliding bush of correspondingly-sized, segmentation transformation is carried out to interval of interest.Pressure break ball due to same size can only open a fracturing sliding bush, and add the size owing to being limited to tubing string internal diameter, the number of fragments achieved by this instrument is very limited, and cannot realize the technical requirements of the more segmentation transformations of horizontal well.
Utility model content
(1) technical problem that will solve
The technical problems to be solved in the utility model how to improve hierarchical level and the functional reliability of Limited entry fracturing sliding sleeve.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of Limited entry fracturing sliding sleeve, it comprises top connection, lower contact, outer sleeve, inner sliding sleeve and ball seat, described top connection is fixedly connected with the upper end of described outer sleeve, described lower contact is fixedly connected with the lower end of described outer sleeve, described inner sliding sleeve is socketed in the inner chamber of described outer sleeve, the outer wall of described inner sliding sleeve is connected by connector with the inwall of outer sleeve, described ball seat is arranged in the described outer sleeve between described top connection and inner sliding sleeve, described ball seat is formed by multiple ball seat Split assembled, multiple described ball seat split is fastened togather by jump ring, and be fastened on the relevant position of described outer sleeve by described jump ring, position relative with described inner sliding sleeve on described outer sleeve is also provided with sandblasting hole and jump-ring slot.
Wherein, the lower end of described ball seat is provided with interior inclined-plane, and the upper end of described inner sliding sleeve is provided with outer inclined-plane, and described interior inclined-plane and described outer inclined-plane fit.
Wherein, the width of described jump-ring slot is more than or equal to the length of described ball seat.
Wherein, described top connection is connected with the threaded upper ends of described outer sleeve, and described lower contact is threaded with the lower end of described outer sleeve.
Wherein, the outer wall of described inner sliding sleeve is connected by shear screw with the inwall of outer sleeve.
Wherein, be also tightly connected by sealing ring between described inner sliding sleeve and described outer sleeve.
(3) beneficial effect
Compared with prior art, the utility model has the following advantages:
A kind of Limited entry fracturing sliding sleeve that the utility model provides, ball seat is adopted to be formed by multiple ball seat Split assembled, multiple described ball seat split is fastened togather by jump ring, and be fastened on the relevant position of described outer sleeve by described jump ring, position relative with described inner sliding sleeve on described outer sleeve is also provided with sandblasting hole and jump-ring slot, by this kind of set-up mode of ball seat, can realize that pressure break ball is disposable can open multiple fracturing sliding bush, hierarchical level is made to increase at double, with the fracturing sliding bush of routine with the use of improving more than pitch capability twice, structure is simple, use procedure is safe and reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of Limited entry fracturing sliding sleeve of the utility model.
In figure: 1: top connection; 2: outer sleeve; 3: ball seat; 4: jump ring; 5: inner sliding sleeve; 6: shear screw; 7: lower contact; 8: sealing ring; 9: jump-ring slot; 10: sandblasting hole.
Detailed description of the invention
Below in conjunction with drawings and Examples, detailed description of the invention of the present utility model is described in further detail.Following instance for illustration of the utility model, but is not used for limiting scope of the present utility model.
In description of the present utility model, it should be noted that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
In addition, in description of the present utility model, except as otherwise noted, the implication of " multiple ", " many ", " many groups " is two or more.
As shown in Figure 1, for a kind of Limited entry fracturing sliding sleeve that the utility model provides, it comprises top connection 1, lower contact 7, outer sleeve 2, inner sliding sleeve 5 and ball seat 3, described top connection 1 can be fixedly connected with by screw thread with the upper end of described outer sleeve 2, described lower contact 7 can be fixedly connected with by screw thread with the lower end of described outer sleeve 2, described inner sliding sleeve 5 is socketed in the inner chamber of described outer sleeve 2, the outer wall of described inner sliding sleeve 5 and the inwall of outer sleeve 2 by connector as shear screw 6 is connected, described ball seat 3 is arranged in the described outer sleeve 2 between described top connection 1 and inner sliding sleeve 5, described ball seat 3 is preferably formed by multiple ball seat Split assembled, such as, if described ball seat split is two, the i.e. cross section semicircular in shape of each described ball split, if described ball seat split is three, i.e. the cross section of each described ball seat split is the circular arc of 1/3rd, by that analogy, multiple described ball seat split is fastened togather the complete ball seat 3 of composition one by jump ring 4, and be fastened on the relevant position of described outer sleeve 2 by described jump ring 4, position relative with described inner sliding sleeve 5 on described outer sleeve 2 is also provided with sandblasting hole 10 and jump-ring slot 9, seals up described sandblasting hole 10 by described inner sliding sleeve 5.When under external force, when ball seat 3 slide downward enters described jump-ring slot 9, described jump ring 4 becomes large consistent with the internal diameter of jump-ring slot 9 in the presence of a tensile force, now multiple ball seat split distendings of ball seat 3, pressure ball in ball seat 3 rolls out from ball seat 3 and enters in next fracturing sliding bush, repeats the work of previous step; Thus a disposable function can opening multiple fracturing sliding bush of pressure break ball can be realized, make hierarchical level increase at double.
In order to described ball seat 3 can be fixed by described inner sliding sleeve 5, preferably, the lower end of described ball seat 3 is provided with interior inclined-plane, and the upper end of described inner sliding sleeve 5 is provided with outer inclined-plane, and described interior inclined-plane and described outer inclined-plane fit.
In order to ensure that described ball seat 3 can distending completely, the width of described jump-ring slot 9 at least equals the length of described ball seat 3.
Also be tightly connected by sealing ring 8 between described inner sliding sleeve 5 and described outer sleeve 2, be yet tightly connected by sealing ring 8 between described ball seat 3 and described outer sleeve 2.
The course of work of the present utility model is: during work, pressure break ball is located on ball seat 3 keeps apart the space up and down of outer sleeve 2 inside, turn on pump builds the pressure, pressure is delivered on inner sliding sleeve 5 by ball seat 3, move down by cutting off the rear ball seat 3 of shear screw 6, and drive inner sliding sleeve 5 to move down until ball seat 3 is entered in jump-ring slot 9 by sandblasting hole 10, set up pressure break passage; Now at the acting in conjunction lower ball base 3 of pressure break ball and inner sliding sleeve 5 by distending, the borehole enlargement of ball seat 3, pressure break ball is by ball seat 3 and continue to be displaced downwardly in next fracturing sliding bush, until complete mission.Jump ring 4 simultaneously on ball seat 3 is released and pins ball seat 3 and prevents from moving, and the interior inclined-plane of ball seat 3 lower end is pinned cannot move down by the outer inclined-plane that inner sliding sleeve 5 fits.Thus realize reliable connection.
The utility model structure is simple, and use procedure is safe and reliable, can realize a disposable function can opening multiple fracturing sliding bush of pressure break ball, make hierarchical level increase at double, with the fracturing sliding bush of routine with the use of improving more than pitch capability twice.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. a Limited entry fracturing sliding sleeve, it comprises top connection, lower contact, outer sleeve, inner sliding sleeve and ball seat, it is characterized in that, described top connection is fixedly connected with the upper end of described outer sleeve, described lower contact is fixedly connected with the lower end of described outer sleeve, described inner sliding sleeve is socketed in the inner chamber of described outer sleeve, the outer wall of described inner sliding sleeve is connected by connector with the inwall of outer sleeve, described ball seat is arranged in the described outer sleeve between described top connection and inner sliding sleeve, described ball seat is formed by multiple ball seat Split assembled, multiple described ball seat split is fastened togather by jump ring, and be fastened on the relevant position of described outer sleeve by described jump ring, position relative with described inner sliding sleeve on described outer sleeve is also provided with sandblasting hole and jump-ring slot.
2. Limited entry fracturing sliding sleeve as claimed in claim 1, it is characterized in that, the lower end of described ball seat is provided with interior inclined-plane, and the upper end of described inner sliding sleeve is provided with outer inclined-plane, and described interior inclined-plane and described outer inclined-plane fit.
3. Limited entry fracturing sliding sleeve as claimed in claim 1, it is characterized in that, the width of described jump-ring slot is more than or equal to the length of described ball seat.
4. Limited entry fracturing sliding sleeve as claimed in claim 1, it is characterized in that, described top connection is connected with the threaded upper ends of described outer sleeve, and described lower contact is threaded with the lower end of described outer sleeve.
5. Limited entry fracturing sliding sleeve as claimed in claim 1, it is characterized in that, the outer wall of described inner sliding sleeve is connected by shear screw with the inwall of outer sleeve.
6. Limited entry fracturing sliding sleeve as claimed in claim 1, be is characterized in that, be also tightly connected by sealing ring between described inner sliding sleeve and described outer sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420632151.4U CN204200202U (en) | 2014-10-28 | 2014-10-28 | A kind of Limited entry fracturing sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420632151.4U CN204200202U (en) | 2014-10-28 | 2014-10-28 | A kind of Limited entry fracturing sliding sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204200202U true CN204200202U (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420632151.4U Active CN204200202U (en) | 2014-10-28 | 2014-10-28 | A kind of Limited entry fracturing sliding sleeve |
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| CN (1) | CN204200202U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401931A (en) * | 2015-11-16 | 2016-03-16 | 中国石油天然气股份有限公司 | Integrated pipe column for casing pipe sliding sleeve fracturing production and fracturing production method for casing pipe sliding sleeve |
| CN105696972A (en) * | 2016-01-20 | 2016-06-22 | 中国石油化工股份有限公司 | Erosion-resistant sliding sleeve |
| CN108625840A (en) * | 2017-03-23 | 2018-10-09 | 中石化石油工程技术服务有限公司 | The more cluster full-bore fracturing sliding bushs of ball-throwing type |
| CN113530492A (en) * | 2020-04-22 | 2021-10-22 | 中国石油天然气股份有限公司 | Differential pressure sliding sleeve |
| CN113653463A (en) * | 2020-05-12 | 2021-11-16 | 中国石油化工股份有限公司 | Sliding sleeve assembly and construction tubular column |
-
2014
- 2014-10-28 CN CN201420632151.4U patent/CN204200202U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401931A (en) * | 2015-11-16 | 2016-03-16 | 中国石油天然气股份有限公司 | Integrated pipe column for casing pipe sliding sleeve fracturing production and fracturing production method for casing pipe sliding sleeve |
| CN105401931B (en) * | 2015-11-16 | 2018-03-09 | 中国石油天然气股份有限公司 | A kind of sliding sleeve of bushing fracturing integrated pipe column and its fracturing method |
| CN105696972A (en) * | 2016-01-20 | 2016-06-22 | 中国石油化工股份有限公司 | Erosion-resistant sliding sleeve |
| CN105696972B (en) * | 2016-01-20 | 2018-03-30 | 中国石油化工股份有限公司 | A kind of erosion resistance sliding sleeve |
| CN108625840A (en) * | 2017-03-23 | 2018-10-09 | 中石化石油工程技术服务有限公司 | The more cluster full-bore fracturing sliding bushs of ball-throwing type |
| CN113530492A (en) * | 2020-04-22 | 2021-10-22 | 中国石油天然气股份有限公司 | Differential pressure sliding sleeve |
| CN113653463A (en) * | 2020-05-12 | 2021-11-16 | 中国石油化工股份有限公司 | Sliding sleeve assembly and construction tubular column |
| CN113653463B (en) * | 2020-05-12 | 2023-09-29 | 中国石油化工股份有限公司 | Sliding sleeve assembly and construction tubular column |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |