CN203362142U - Actuating and differential pressure type fracturing sliding sleeve - Google Patents
Actuating and differential pressure type fracturing sliding sleeve Download PDFInfo
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- CN203362142U CN203362142U CN 201320337792 CN201320337792U CN203362142U CN 203362142 U CN203362142 U CN 203362142U CN 201320337792 CN201320337792 CN 201320337792 CN 201320337792 U CN201320337792 U CN 201320337792U CN 203362142 U CN203362142 U CN 203362142U
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- urceolus
- differential pressure
- communicated
- fracturing sliding
- mandrel
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Abstract
The utility model relates to the technical field of fracturing sliding sleeves, in particular to an actuating and differential pressure type fracturing sliding sleeve. The actuating and differential pressure type fracturing sliding sleeve comprises an outer cylinder, a differential pressure central spindle and a communicating sleeve. The differential pressure central spindle is installed in the outer cylinder, a central spindle outer boss corresponding to the inner diameter of the outer barrel is arranged on the upper portion of the differential pressure central spindle, and at least one fluid inlet hole is formed in the outer cylinder corresponding to the central spindle outer boss. The communicating sleeve is fixedly installed at the lower end inside the outer cylinder, the lower end of the differential pressure central spindle is fixedly connected with the lower portion of the communicating sleeve through a shear pin, and a lower-pressure annular cavity is formed between the upper end of the communicating sleeve and the lower end of the central spindle outer boss and between the differential pressure central spindle and the outer cylinder. The actuating and differential pressure type fracturing sliding sleeve is reasonable and compact in structure and convenient to use; in the moving-downward process of the differential pressure central spindle, a radial overpressure hole can prevent the differential pressure central spindle from suppressing pressure when the differential pressure central spindle moves downwards, and the reliability of opening of the liquid inlet hole is improved; the actuating and differential pressure type fracturing sliding sleeve is easy to operate and convenient to install; the lower end of the differential pressure central spindle is connected with the communicating sleeve through the shear pin, the strength of the outer cylinder is not influenced, and the safety of the actuating and differential pressure type fracturing sliding sleeve is improved, and the service life of the actuating and differential pressure type fracturing sliding sleeve is prolonged.
Description
Technical field
the utility model relates to the fracturing sliding bush technical field, is the differential fracturing sliding bush of a kind of excitation formula.
Background technology
in oilfield explorating developing process, fracturing technique has become a kind of indispensable technical measures of the high yield of realizing oil gas field, utilizes hydraulic action, makes oil-gas Layer form a kind of technology in crack; With regard to the staged fracturing technology, the main pressure break mode of existing domestic use adds the sliding sleeve fracturing technical matters for packer; The pressure reduction sliding sleeve is used in an indispensable technical requirements of this technique exactly, pumps into high-pressure fluid by ground sliding sleeve is opened, and high-pressure fluid enters the oil reservoir rock and carries out pressure break; And current used pressure reduction sliding sleeve is because of complex structure, it is very inconvenient to install; The shear pin that simultaneously connects the pressure reduction axle is installed usually on the urceolus of pressure reduction sliding sleeve, has reduced the intensity of urceolus; During on-the-spot the use, the sliding sleeve defect such as do not open, poor reliability also easily appear in the pressure reduction sliding sleeve.
Summary of the invention
the utility model provides a kind of excitation formula differential fracturing sliding bush, has overcome the deficiency of above-mentioned prior art, and its pressure reduction sliding sleeve that can effectively solve existing use is installed inconvenience, urceolus intensity difference; And the sliding sleeve defect such as do not open, the problem of poor reliability easily appear.
the technical solution of the utility model realizes by following measures: the differential fracturing sliding bush of a kind of excitation formula comprises urceolus, pressure reduction mandrel and is communicated with cover; The pressure reduction mandrel is installed in urceolus, the mandrel outer lug boss corresponding with the urceolus internal diameter arranged on the top of pressure reduction mandrel, and be distributed with at least one inlet opening on the corresponding urceolus of mandrel outer lug boss; Be installed with and be communicated with cover in the interior lower end of urceolus, the lower end of pressure reduction mandrel is overlapped bottom and is fixedly installed togather by shear pin with being communicated with; Be communicated with formation low pressure ring cavity between set upper side and mandrel outer lug boss lower end, pressure reduction mandrel and urceolus, the connection above shear pin puts the inner groove communicated with the low pressure ring cavity, has on the connection cover and makes inner groove and the extraneous radially overvoltage hole communicated.
below the further optimization and/or improvements to above-mentioned utility model technical scheme:
mandrel location inner convex platform can be arranged on the urceolus of above-mentioned pressure reduction mandrel upper end.
can there be the internal thread mounting groove inboard, lower end of above-mentioned urceolus, and the top that is communicated with cover is fixedly mounted in the internal thread mounting groove by screw thread.
can there be the conical internal thread that is wide at the top and narrow at the bottom the upper end of above-mentioned urceolus, at the lower outside that is communicated with cover, is installed with lower contact, and the conical external screw thread that is wide at the top and narrow at the bottom is arranged in the lower end of lower contact.
can be intervally distributed with at least three rows' inlet openings on above-mentioned urceolus from top to bottom, every package is drawn together at least ten inlet openings circumference uniform distribution on urceolus.
can be installed with respectively sealing ring between the urceolus of above-mentioned inlet opening above and below and mandrel outer lug boss; Be installed with sealing ring between connection cover below inner groove and pressure reduction mandrel; Be communicated with between cover top and urceolus and fixedly mount sealing ring; Be communicated with between cover bottom and lower contact and be installed with sealing ring.
the utility model reasonable and compact in structure, easy to use; In the pressure reduction mandrel moves down process, radially the overvoltage hole can prevent the pressure reduction mandrel pressure of spraining when moving down, and improves the reliability that inlet opening is opened; Simultaneously simple to operate, easy for installation; The lower end of pressure reduction axle is connected by shear pin with the connection cover, does not affect urceolus intensity, improves safety of the present utility model and application life.
The accompanying drawing explanation
the main TV structure schematic diagram that accompanying drawing 1 is the utility model most preferred embodiment.
accompanying drawing 2 is the descending main TV structure schematic diagram of pressure reduction mandrel in the utility model.
coding in accompanying drawing is respectively: 1 is urceolus, and 2 is the pressure reduction mandrel, and 3 is the mandrel outer lug boss, and 4 is inlet opening, 5 for being communicated with cover, and 6 is the low pressure ring cavity, and 7 is shear pin, and 8 is inner groove, 9 is overvoltage hole radially, and 10 is lower contact, and 11 be sealing ring, and 12 is that mandrel is located inner convex platform.
The specific embodiment
the utility model is not subject to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
in the utility model, for convenience of description, the description of the relative position relation of each parts is all to be described according to the Butut mode of Figure of description 1, as: the position relationship of upper and lower, left and right etc. is to determine according to the Butut direction of Figure of description 1.
below in conjunction with embodiment and accompanying drawing, the utility model is further described:
as shown in accompanying drawing 1,2, the differential fracturing sliding bush of this excitation formula comprises urceolus 1, pressure reduction mandrel 2 and is communicated with cover 5; Pressure reduction mandrel 2 is installed in urceolus 1, the mandrel outer lug boss 3 corresponding with urceolus 1 internal diameter arranged on the top of pressure reduction mandrel 2, on urceolus 1 corresponding to mandrel outer lug boss 3, be distributed with at least one inlet opening 4; Be installed with and be communicated with cover 5 in the interior lower end of urceolus 1, the lower end of pressure reduction mandrel 2 is overlapped 5 bottoms and is fixedly installed togather by shear pin 7 with being communicated with; Be communicated with formation low pressure ring cavity 6 between cover 5 upper ends and mandrel outer lug boss 3 lower ends, pressure reduction mandrel 2 and urceolus 1, on the cover of the connection above shear pin 75, the inner groove 8 communicated with low pressure ring cavity 6 is arranged, have on connection cover 5 and make inner groove 8 and the extraneous radially overvoltage hole 9 communicated.In the time of need to carrying out pressing crack construction, at first in from ground to well, pump into high-pressure fluid, the upper surface formed due to pressure reduction mandrel 2 and mandrel outer lug boss 3 is greater than the lower surface of pressure reduction mandrel 2, make high-pressure fluid poor to pressure difference the mineralization pressure of the upper and lower end face of pressure reduction mandrel 2, pressure reduction mandrel 2 moves down; Shear pin 7 is cut off, and pressure reduction mandrel 2 is descending, the exposed unlatching of inlet opening 4, and high-pressure fluid enters stratum by inlet opening 4, carries out fracturing work; Now, mandrel outer lug boss 3 comes downwards to and is communicated with on cover 5, and the gas of compression and low pressure ring cavity 6 is or/and liquid, makes gas or/and liquid can recycle by overvoltage hole 9 radially, has effectively guaranteed the smooth unlatching of inlet opening 4, and reliability is high.
can according to actual needs, the differential fracturing sliding bush of above-mentioned excitation formula be made further optimization and/or improvements:
as shown in accompanying drawing 1,2, mandrel location inner convex platform 12 is arranged on the urceolus 1 of pressure reduction mandrel 2 upper ends.Mandrel location inner convex platform 12 plays the effect of axial limiting for the installation of pressure reduction mandrel 2.
as shown in accompanying drawing 1,2, in the inboard, lower end of urceolus 1, the internal thread mounting groove is arranged, the top that is communicated with cover 5 is fixedly mounted in the internal thread mounting groove by screw thread.Be convenient to the utility model dismounting, easy to use.
as shown in accompanying drawing 1,2, there is the conical internal thread that is wide at the top and narrow at the bottom the upper end of urceolus 1, at the lower outside that is communicated with cover 5, is installed with lower contact 10, and the conical external screw thread that is wide at the top and narrow at the bottom is arranged in the lower end of lower contact 10.Can be convenient to like this utility model and other downhole hardwares and install, easy to use.
as shown in accompanying drawing 1,2, be intervally distributed with at least three rows' inlet openings 4 from top to bottom on urceolus 1, every package is drawn together at least ten inlet openings 4 circumference uniform distribution on urceolus 1.Can effectively improve like this liquid rate of crossing of high-pressure fluid, accelerate crush speed.
as shown in accompanying drawing 1,2, between the urceolus 1 of inlet opening 4 above and belows and mandrel outer lug boss 3, be installed with respectively sealing ring 11; Be installed with sealing ring 11 between connection cover 5 below inner groove 8 and pressure reduction mandrel 2; Be communicated with fixed installation sealing ring 11 between cover 5 tops and urceolus 1; Be communicated with between cover 5 bottoms and lower contact 10 and be installed with sealing ring 11.Sealing ring 11 plays the effect that increases the contact surface sealing.
above technical characterictic has formed most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease according to actual needs non-essential technical characterictic, meets the demand of different situations.
Claims (10)
1. the differential fracturing sliding bush of excitation formula, is characterized in that comprising urceolus, pressure reduction mandrel and be communicated with cover; The pressure reduction mandrel is installed in urceolus, the mandrel outer lug boss corresponding with the urceolus internal diameter arranged on the top of pressure reduction mandrel, and be distributed with at least one inlet opening on the corresponding urceolus of mandrel outer lug boss; Be installed with and be communicated with cover in the interior lower end of urceolus, the lower end of pressure reduction mandrel is overlapped bottom and is fixedly installed togather by shear pin with being communicated with; Be communicated with formation low pressure ring cavity between set upper side and mandrel outer lug boss lower end, pressure reduction mandrel and urceolus, the connection above shear pin puts the inner groove communicated with the low pressure ring cavity, has on the connection cover and makes inner groove and the extraneous radially overvoltage hole communicated.
2. the differential fracturing sliding bush of excitation formula according to claim 1, is characterized in that, on the urceolus of pressure reduction mandrel upper end, mandrel location inner convex platform is arranged.
3. the differential fracturing sliding bush of excitation formula according to claim 1 and 2, is characterized in that there is the internal thread mounting groove inboard, lower end of urceolus, and the top that is communicated with cover is fixedly mounted in the internal thread mounting groove by screw thread.
4. the differential fracturing sliding bush of excitation formula according to claim 1 and 2, there is the conical internal thread that is wide at the top and narrow at the bottom the upper end that it is characterized in that urceolus, be installed with lower contact at the lower outside that is communicated with cover, the conical external screw thread that is wide at the top and narrow at the bottom is arranged in the lower end of lower contact.
5. the differential fracturing sliding bush of excitation formula according to claim 3, there is the conical internal thread that is wide at the top and narrow at the bottom the upper end that it is characterized in that urceolus, be installed with lower contact at the lower outside that is communicated with cover, the conical external screw thread that is wide at the top and narrow at the bottom is arranged in the lower end of lower contact.
6. the differential fracturing sliding bush of excitation formula according to claim 1 and 2, is characterized in that on urceolus being intervally distributed with that at least three rows' inlet openings, every package draw together at least ten inlet openings circumference uniform distribution on urceolus from top to bottom.
7. the differential fracturing sliding bush of excitation formula according to claim 3, is characterized in that on urceolus being intervally distributed with that at least three rows' inlet openings, every package draw together at least ten inlet openings circumference uniform distribution on urceolus from top to bottom.
8. the differential fracturing sliding bush of excitation formula according to claim 5, is characterized in that on urceolus being intervally distributed with that at least three rows' inlet openings, every package draw together at least ten inlet openings circumference uniform distribution on urceolus from top to bottom.
9. the differential fracturing sliding bush of excitation formula according to claim 1 and 2, is characterized in that being installed with respectively sealing ring between the urceolus of inlet opening above and below and mandrel outer lug boss; Be installed with sealing ring between connection cover below inner groove and pressure reduction mandrel; Be communicated with between cover top and urceolus and fixedly mount sealing ring; Be communicated with between cover bottom and lower contact and be installed with sealing ring.
10. the differential fracturing sliding bush of excitation formula according to claim 8, is characterized in that being installed with respectively sealing ring between the urceolus of inlet opening above and below and mandrel outer lug boss; Be installed with sealing ring between connection cover below inner groove and pressure reduction mandrel; Be communicated with between cover top and urceolus and fixedly mount sealing ring; Be communicated with between cover bottom and lower contact and be installed with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320337792 CN203362142U (en) | 2013-06-13 | 2013-06-13 | Actuating and differential pressure type fracturing sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320337792 CN203362142U (en) | 2013-06-13 | 2013-06-13 | Actuating and differential pressure type fracturing sliding sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203362142U true CN203362142U (en) | 2013-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320337792 Expired - Fee Related CN203362142U (en) | 2013-06-13 | 2013-06-13 | Actuating and differential pressure type fracturing sliding sleeve |
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| CN (1) | CN203362142U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088614A (en) * | 2014-06-30 | 2014-10-08 | 中国石油集团川庆钻探工程有限公司 | Excitation type differential pressure sliding sleeve |
| CN104343431A (en) * | 2014-10-28 | 2015-02-11 | 中国石油集团西部钻探工程有限公司 | Well cementation fracturing slide bushing |
| CN105317416A (en) * | 2014-07-31 | 2016-02-10 | 中国石油天然气股份有限公司 | Sand blower |
| CN105569606A (en) * | 2014-10-11 | 2016-05-11 | 中国石油化工股份有限公司 | Switchable pressure differential sliding sleeve |
-
2013
- 2013-06-13 CN CN 201320337792 patent/CN203362142U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088614A (en) * | 2014-06-30 | 2014-10-08 | 中国石油集团川庆钻探工程有限公司 | Excitation type differential pressure sliding sleeve |
| CN105317416A (en) * | 2014-07-31 | 2016-02-10 | 中国石油天然气股份有限公司 | Sand blower |
| CN105317416B (en) * | 2014-07-31 | 2017-10-17 | 中国石油天然气股份有限公司 | Sand blower |
| CN105569606A (en) * | 2014-10-11 | 2016-05-11 | 中国石油化工股份有限公司 | Switchable pressure differential sliding sleeve |
| CN105569606B (en) * | 2014-10-11 | 2018-06-29 | 中国石油化工股份有限公司 | A kind of switchable differential sliding sleeve |
| CN104343431A (en) * | 2014-10-28 | 2015-02-11 | 中国石油集团西部钻探工程有限公司 | Well cementation fracturing slide bushing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20210613 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |