CN204371290U - Sand blast sliding sleeve and separate-layer string - Google Patents
Sand blast sliding sleeve and separate-layer string Download PDFInfo
- Publication number
- CN204371290U CN204371290U CN201420820711.9U CN201420820711U CN204371290U CN 204371290 U CN204371290 U CN 204371290U CN 201420820711 U CN201420820711 U CN 201420820711U CN 204371290 U CN204371290 U CN 204371290U
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- Prior art keywords
- sliding sleeve
- sand blast
- urceolus
- blast sliding
- lower contact
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- 239000004576 sand Substances 0.000 title claims abstract description 95
- 238000005520 cutting process Methods 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 210000000988 bone and bone Anatomy 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 17
- 238000010276 construction Methods 0.000 description 16
- 238000005488 sandblasting Methods 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000000638 stimulation Effects 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a kind of sand blast sliding sleeve, described sand blast sliding sleeve comprises urceolus, the lower contact be connected with the inner surface of the lower end of described urceolus, the inner sliding sleeve being positioned at described lower contact, the shear pin being fixedly connected with described lower contact and inner sliding sleeve and the top connection be connected with the inner surface of the upper end of described urceolus, described sand blast sliding sleeve also comprises spring detent, the top of described spring detent is fixedly connected on the inner surface of the lower end of described top connection, and the pawl end clip of described spring detent is between the external surface of the upper end of described lower contact and described inner sliding sleeve; When cutting off described shear pin, described inner sliding sleeve skids off in described lower contact, and described top connection can be slided along the inner surface axial of described urceolus.The invention also discloses a kind of separate-layer string.Described sand blast sliding sleeve increases the activity space of the oil pipe be connected with top connection, and then can gradually deblocking card-dispelling tubular pile, and tubing string easily trips out.
Description
Technical field
The utility model relates to oil field well field of tool, particularly relates to a kind ofly to carry out the sand blast sliding sleeve used in separate zone stimulation process and the separate-layer string with this sand blast sliding sleeve at oil field Oil, Water, Gas well, is mainly used in the technique such as separate layer acid treatment and pressure break.
Background technology
In petroleum industry field, fracturing uses maximum technologies in oil formation improvement, the technology matched with it has occurred in succession: limited pressure separate zone stimulation technology, drawing type separate stratum fracfturing technology, fixed tubular column separate stratum fracfturing technology and separate stratum fracfturing completion renovation technique etc., the core tool of these technology is packer and sand blast sliding sleeve.
Sand blast sliding sleeve a kind ofly adopts pitching to pressurize or the down-hole switch instrument opened of the mode of building the pressure, by from the bottom to top successively switch realize the object of separate zone stimulation.The basic function of current sand blast sliding sleeve is single, mainly completes acidifying liquid feeding, pressure break liquid feeding adds sand and the later stage returns row, but the later stage returns row and production is inevitably shaked out, and causes tubing string sand to bury.Separate-layer string structure is owing to adopting multiple-string packer and sand blast sliding sleeve combination, when lift pipe string, need deblocking multiple-string packer simultaneously, even if in the little situation of tubing string frictional resistance, only deblocking power is just very large, existing ground installation be difficult to meet so large on carry load, even if change K344, Y344 series packer without the need to above carrying deblocking into, also bury because packer reclaims bad and between packer and sleeve pipe sand, tubing string can not up and down unfreezing, is still difficult to trip out tubing string.
Foregoing only understands the technical solution of the utility model for auxiliary, does not represent and admits that foregoing is prior art.
Utility model content
Main purpose of the present utility model is to provide a kind of sand blast sliding sleeve, and being intended to solve tubing string in existing separate-layer string structure can not the technical problem that trips out of up and down unfreezing and being difficult to.
For achieving the above object, the utility model provides a kind of sand blast sliding sleeve, described sand blast sliding sleeve comprises urceolus, the lower contact be connected with the inner surface of the lower end of described urceolus, be positioned at the inner sliding sleeve of described lower contact, the top connection being fixedly connected with described lower contact and the shear pin of inner sliding sleeve and being connected with the inner surface of the upper end of described urceolus, described sand blast sliding sleeve also comprises spring detent, the top of described spring detent is fixedly connected on the inner surface of the lower end of described top connection, the pawl end clip of described spring detent is between the external surface of the upper end of described lower contact and described inner sliding sleeve, when cutting off described shear pin, described inner sliding sleeve skids off in described lower contact, and described top connection can be slided along the inner surface axial of described urceolus.
Preferably, the external surface of described top connection extends radially outwardly formation protuberance, and the corresponding described protuberance of inner surface of described urceolus is provided with strip groove, and described protuberance can slide in described strip groove.
Preferably, described sand blast sliding sleeve also comprises spacing ring, and described spacing ring is arranged on the inner surface of the upper end of the strip groove of described urceolus, for limiting the slip of described protuberance.
Preferably, described sand blast sliding sleeve also comprises trip bolt, and described trip bolt is fixedly connected with described urceolus and described spacing ring, and described trip bolt can shear failure.
Preferably, the inner surface of described lower contact is provided with draw-in groove, and described draw-in groove coordinates with the external surface of the upper end of described inner sliding sleeve, fixes the tail end of described spring detent for clip.
Preferably, described sand blast sliding sleeve also comprises anticollision ring, and described anticollision ring is set in the external surface of described top connection and is connected with the upper surface of described urceolus, and described anticollision ring has crashproof inclined-plane.
Preferably, described sand blast sliding sleeve also comprises " O " shape sealing ring, and described " O " shape sealing ring is separately positioned on the junction of described urceolus and described lower contact, described inner sliding sleeve and the junction of described lower contact and the junction of described urceolus and described top connection.
Preferably, described sand blast sliding sleeve also comprises anti-turn screw and backing-up screw; Described urceolus is threaded with described lower contact, and described anti-turn screw is fixedly connected with described urceolus and described lower contact; Described top connection is threaded with described spring detent, and described backing-up screw is fixedly connected with described top connection and described spring detent.
In addition, for achieving the above object, the utility model also provides a kind of separate-layer string, and described separate-layer string comprises sand blast sliding sleeve as above.
Preferably, described separate-layer string also comprises ball seat bottom sleeve pipe, oil pipe, three packers and, and the quantity of described sand blast sliding sleeve is two; Described cover circumference of cannon bone overlaps described oil pipe, described oil pipe is arranged from top to bottom, described bottom ball seat is arranged on the lower end of described oil pipe, and described three packers connect described oil pipe from top to bottom to form layering, and each sand blast sliding sleeve to be arranged between two adjacent packers and to connect described oil pipe.
Sand blast sliding sleeve of the present utility model and separate-layer string are by setting up spring detent, and one end of spring detent is fixed in top connection, other end clip is fixed between inner sliding sleeve and lower contact, when inner sliding sleeve comes off, the other end of spring detent is in free state, and then top connection can be up and down in urceolus, to increase the activity space of the oil pipe be connected with top connection, and then can gradually deblocking card-dispelling tubular pile, until tubing string all trips out, and tubing string trips out easily; In addition, top connection sliding action owing to being inner at sand blast sliding sleeve, even if the outside sand of sand blast sliding sleeve buries also do not affect tubing string activity.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model sand blast sliding sleeve one preferred embodiment;
Fig. 2 is the structural representation after the inner sliding sleeve of sand blast sliding sleeve in Fig. 1 is released;
Fig. 3 is the top connection of sand blast sliding sleeve in Fig. 2, spring detent, spacing ring and anticollision ring trip out after structural representation;
Fig. 4 be in Fig. 1 sand blast sliding sleeve along the sectional view of A-A line;
Fig. 5 be in Fig. 1 sand blast sliding sleeve along the sectional view of B-B line;
Fig. 6 is the structural representation of the utility model layered fracturing pipe string one preferred embodiment.
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of sand blast sliding sleeve, with reference to Fig. 1 and Fig. 2, in a preferred embodiment, this sand blast sliding sleeve comprises urceolus 20, the lower contact 22 be connected with the inner surface of the lower end of urceolus 20, the inner sliding sleeve 24 being positioned at lower contact 22, the shear pin 26 being fixedly connected with lower contact 22 and inner sliding sleeve 24, the top connection 28 be connected with the inner surface of the upper end of urceolus 20 and spring detent 40.The top of spring detent 40 is fixedly connected on the inner surface of the lower end of top connection 28, and the pawl end clip of spring detent 40 is between the external surface of the upper end of lower contact 22 and inner sliding sleeve 24.Wherein, the sidewall of lower contact 22 is evenly distributed with radial several sandblasting holes 222, and inner sliding sleeve 24 hides this several sandblasting hole 222, when entering in this sand blast sliding sleeve from top connection 28 upper end pitching, ball drops into the upper end of inner sliding sleeve 24, ball and inner sliding sleeve 24 form hermetically-sealed construction, this ball is pressurizeed, shear pin 26 is cut off, ball is pushed out together with inner sliding sleeve 24, sandblasting hole 222 is opened, as shown in Figure 2, this sandblasting hole 222 is for acidifying liquid feeding, pressure break liquid feeding adds sand and later stage and returns and apply work etc., now, because the pawl end of spring detent 40 is in free state, top connection 28 can be slided along the inner surface axial of urceolus 20.
The sand blast sliding sleeve of this preferred embodiment is by setting up spring detent 40, and one end of spring detent 40 is fixed in top connection 28, other end clip is fixed between inner sliding sleeve 24 and lower contact 22, when inner sliding sleeve 24 comes off, the other end of spring detent 40 is in free state, and then top connection 28 can be up and down in urceolus 20, to increase the activity space of the oil pipe be connected with top connection 28, and then can gradually deblocking card-dispelling tubular pile, until tubing string all trips out, and tubing string trips out easily, achieve the movable deblocking releasing function of sand blast sliding sleeve; In addition, top connection 28 sliding action is owing to occurring in sand blast sliding sleeve inside, even if the outside sand of sand blast sliding sleeve buries the activity also not affecting and trip out tubing string.
With reference to Fig. 1 and Fig. 4, in a preferred embodiment, the external surface of top connection 28 extends radially outwardly and forms protuberance 280, and the corresponding protuberance 280 of inner surface of urceolus 20 is provided with strip groove 200, and protuberance 280 can slide in strip groove 200.Preferably, protuberance 280 is symmetricly set on the both sides of the external surface of top connection 28, and this strip groove 200 is to being symmetricly set on the both sides of the inner surface of urceolus 20 by protuberance 280.
The protuberance 280 of the top connection 28 of the preferred embodiment is slidably matched with the strip groove 200 of urceolus 20, sliding up and down of this top connection 28 is accurate, and this top connection 28 can rotate driving torque to urceolus 20, and then be passed to bottom by urceolus 20, and then rotate deblocking releasing tubing string, further increase the ability of tubing string deblocking releasing.
With reference to Fig. 1, in a more preferred embodiment, sand blast sliding sleeve also comprises spacing ring 42, and spacing ring 42 is arranged on the inner surface of the upper end of the strip groove 200 of urceolus 20, for limiting the slip of protuberance 280.
The length of strip groove 200 on the axial direction of urceolus 20 of this more preferred embodiment is 1000mm, and namely the maximum activity distance of this protuberance 280 can reach 1000mm, and this spacing ring 42 controls this protuberance 280 in this maximum activity apart from interior activity.
With reference to Fig. 2 and Fig. 3, in a most preferred embodiment, sand blast sliding sleeve also comprises trip bolt 44, and trip bolt 44 is fixedly connected with urceolus 20 and spacing ring 42, and trip bolt 44 can shear failure.
The trip bolt 44 of the sand blast sliding sleeve of this most preferred embodiment can be cut off, namely under the effect of enough upper lifting forces, this trip bolt 44 is cut off, top connection 28 simultaneously, spring detent 40 and spacing ring 42 can trip out from urceolus 20, leave the urceolus 20 of big orifice as bottom sand washing fishing head, therefore, this sand blast sliding sleeve furthermore achieved that and gives up and salvage function.
With reference to Fig. 1 and Fig. 5, in a preferred embodiment, the inner surface of lower contact 22 is provided with draw-in groove 220, and draw-in groove 220 coordinates with the external surface of the upper end of inner sliding sleeve 24, for the tail end of clip fixing spring pawl 40.Preferably, this spring detent 40 has eight pawl arms (non-label), and the inner surface of lower contact 22 is to being evenly distributed with eight draw-in grooves 220 by spring detent 40.
In the preferred embodiment, eight pawl arms of spring detent 40 snap in draw-in groove 220, and the upper end of inner sliding sleeve 24 is inserted in eight pawl arms of spring detent 40, make the tail end of the external surface clip springs pawl 40 of the upper end of this draw-in groove 220 and inner sliding sleeve 24, this clip good fixing effect, now, spring detent 40 cannot move.
With reference to Fig. 1, in a preferred embodiment, sand blast sliding sleeve also comprises anticollision ring 46, and anticollision ring 46 is set in the external surface of top connection 28 and is connected with the upper surface of urceolus 20, and anticollision ring 46 has crashproof inclined-plane (non-label).
The crashproof inclined-plane of the anticollision ring 46 of the preferred embodiment plays cushioning effect, avoids sand blast sliding sleeve clashed into and move.
With reference to Fig. 1, in a preferred embodiment, sand blast sliding sleeve also comprises " O " shape sealing ring 48, " O " shape sealing ring 48 is separately positioned on the junction of the junction of urceolus 20 and lower contact 22, the junction of inner sliding sleeve 24 and lower contact 22 and urceolus 20 and top connection 28.
" O " shape sealing ring 48 of the preferred embodiment can ensure the sealing of above-mentioned junction, and sealing effectiveness is good.
With reference to Fig. 1, in a preferred embodiment, sand blast sliding sleeve also comprises anti-turn screw 60 and backing-up screw 62; Urceolus 20 is threaded with lower contact 22, and anti-turn screw 60 is fixedly connected with urceolus 20 and lower contact 22; Top connection 28 is threaded with spring detent 40, and backing-up screw 62 is fixedly connected with top connection 28 and spring detent 40.
The internal thread of the urceolus 20 of the preferred embodiment coordinates with the external screw thread of lower contact 22, is fixedly connected with further by anti-turn screw 60, prevents connection of thread from rotating; The internal thread of the top connection 28 of the preferred embodiment coordinates with the external screw thread of spring detent 40, is fixedly connected with further by backing-up screw 62, prevents connection of thread from loosening.
Referring to figs. 1 through Fig. 3, the operating principle of the sand blast sliding sleeve of this preferred embodiment is as follows:
The sand blast sliding sleeve of this preferred embodiment is as in layering tool and packer lower going-into-well, during construction in layer, pitching is in oil pipe, ball drops into inner sliding sleeve 24 top by the top connection 28 be communicated with oil pipe, ball and inner sliding sleeve 24 form hermetically-sealed construction, pressurize from oil pipe, shear pin 26 is cut off, ball is pushed out instrument together with inner sliding sleeve 24, sandblasting hole 222 is opened, can complete acidifying liquid feeding or pressure break liquid feeding and add sand construction, the interior latus rectum that construction terminates rear sand blast sliding sleeve is consistent with pipe aperture, does not affect the normally row's of returning production;
During lift pipe string, because inner sliding sleeve during construction in layer 24 is struck off, the tail end of spring detent 40 is in free state, after upper lifting pipe post deblocking higher level packer, under the effect of upper lifting force, the protuberance 280 of top connection 28 slides up and down in the strip groove 200 of urceolus 20, realize deblocking releasing, wherein, spacing ring 42 controls sliding distance, maximum activity distance can reach 1000mm, the sliding action of top connection 28 is owing to occurring in sand blast sliding sleeve inside, even if the outside sand of sand blast sliding sleeve buries also do not affect tubing string activity, and tubing string rotates and drives top connection 28 to rotate, the protuberance 280 of top connection 28 drives urceolus 20 to rotate by strip groove 200, thus transmit torque to the bottom of sand blast sliding sleeve, improve deblocking releasing ability, when the bottom deblocking power of sand blast sliding sleeve is too large or cannot unfreezing, increase upper lifting force and can cut off trip bolt 44, top connection 28, anticollision ring 46, spacing ring 42 and spring detent 40 all trip out, and leave the urceolus 20 of big orifice as bottom sand washing fishing head.Therefore, this sand blast sliding sleeve is Multifunctional sand blasting sliding sleeve, integrates and adds sand, production, movable deblocking releasing, give up and salvage types of functionality.
The utility model also provides a kind of separate-layer string, and with reference to Fig. 6, in the lump composition graphs 1, in a preferred embodiment, separate-layer string comprises sand blast sliding sleeve 2 as above.
The separate-layer string of this preferred embodiment increases the activity space of the oil pipe 6 be connected with its top connection 28 due to sand blast sliding sleeve 2, and then can gradually deblocking unfreezing, until all trip out, and trips out easily; In addition, top connection 28 sliding action of sand blast sliding sleeve 2 owing to being inner at sand blast sliding sleeve 2, even if the outside sand of sand blast sliding sleeve 2 buries also do not affect tubing string activity.
With reference to Fig. 6, in a preferred embodiment, separate-layer string is tri-level construction structure, has top-down three works areas 5, and separate-layer string also comprises ball seat 3 bottom sleeve pipe 8, oil pipe 6, three packers 4 and, and the quantity of sand blast sliding sleeve 2 is two; Sleeve pipe 8 encloses cover oil pipe 6, and oil pipe 6 is arranged from top to bottom, and bottom ball seat 3 is arranged on the lower end of oil pipe 6, and connected pipes 6 is to form layering from top to bottom for three packers 4, and each sand blast sliding sleeve 2 to be arranged between two adjacent packers 4 also connected pipes 2.
With reference to Fig. 6, in the lump composition graphs 1 to Fig. 3, the operating principle following (be described for pressing crack construction, be not limited to pressing crack construction) of the separate-layer string of this preferred embodiment:
Pressing crack construction: during construction, pitching or put forward discharge capacity and set all packers 4, construction lower floor, after construction terminates, check the number by ball 1 size and sand blast sliding sleeve 2 progression and drop into, open Multifunctional sand blasting sliding sleeve 2 and carry out respective layer construction, open construction from the bottom to top, construction terminates rear sand blast sliding sleeve 2 and is in open mode, reversal is produced, and now, the spring detent 40 of Multifunctional sand blasting sliding sleeve 2 at different levels is in free state, because packer 4 or anchoring structure are in the state of setting, tubing string is not thrown off;
Gradually deblocking: during lift pipe string, upper lifting pipe post, deblocking first order packer 4, packer 4 deblocking needs certain operating range, now the afterbody of packer 4 is connected with oil pipe 6 and Multifunctional sand blasting sliding sleeve 2, when tubing string being carried packer 4 deblocking, deblocking increases load, the oil pipe 6 of the afterbody of packer 4 drives the top connection 28 of Multifunctional sand blasting sliding sleeve 2, drive spring detent 40 simultaneously, now the oil pipe 6 of the afterbody of packer 4 and top connection 28 can in urceolus 20 up and down, rotary moveable is with unfreezing, when first order packer 4 completely solution be honored as a queen, continue upper lifting pipe post, untie the second level and third level packer 4 from top to bottom step by step by that analogy, until trip out whole tubing string,
To give up salvaging: when run into packer 4 complete stuck time, stuck for second level packer 4, as up and down, rotary moveable lost efficacy, then upper lifting pipe post is supreme puies forward suspending weight maximum load, increase certain upper lifting force, top connection 28 and the urceolus 20 of Multifunctional sand blasting sliding sleeve 2 are in the state of being fully withdrawn, under the effect of upper lift power, the protuberance 280 of top connection 28 promotes spacing ring 42, cut off trip bolt 44 to realize giving up, the top connection 28 of Multifunctional sand blasting sliding sleeve 2, anticollision ring 46, spacing ring 42, spring detent 40 and top oil pipe 6 are all tripped out with other instruments, leave urceolus 20, lower contact less than 22 instrument and tubing string, enter sand washing fishing tool under later stage and can trip out whole tubing string according to upper step gradually deblocking and salvaging way of giving up.
These are only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model manual and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. a sand blast sliding sleeve, described sand blast sliding sleeve comprises urceolus, the lower contact be connected with the inner surface of the lower end of described urceolus, the inner sliding sleeve being positioned at described lower contact, the shear pin being fixedly connected with described lower contact and inner sliding sleeve and the top connection be connected with the inner surface of the upper end of described urceolus, it is characterized in that, described sand blast sliding sleeve also comprises spring detent, the top of described spring detent is fixedly connected on the inner surface of the lower end of described top connection, and the pawl end clip of described spring detent is between the external surface of the upper end of described lower contact and described inner sliding sleeve; When cutting off described shear pin, described inner sliding sleeve skids off in described lower contact, and described top connection can be slided along the inner surface axial of described urceolus.
2. sand blast sliding sleeve as claimed in claim 1, is characterized in that, the external surface of described top connection extends radially outwardly formation protuberance, and the corresponding described protuberance of inner surface of described urceolus is provided with strip groove, and described protuberance can slide in described strip groove.
3. sand blast sliding sleeve as claimed in claim 2, it is characterized in that, described sand blast sliding sleeve also comprises spacing ring, and described spacing ring is arranged on the inner surface of the upper end of the strip groove of described urceolus, for limiting the slip of described protuberance.
4. sand blast sliding sleeve as claimed in claim 3, it is characterized in that, described sand blast sliding sleeve also comprises trip bolt, and described trip bolt is fixedly connected with described urceolus and described spacing ring, and described trip bolt can shear failure.
5. sand blast sliding sleeve as claimed in claim 1, it is characterized in that, the inner surface of described lower contact is provided with draw-in groove, and described draw-in groove coordinates with the external surface of the upper end of described inner sliding sleeve, fixes the tail end of described spring detent for clip.
6. sand blast sliding sleeve as claimed in claim 1, it is characterized in that, described sand blast sliding sleeve also comprises anticollision ring, and described anticollision ring is set in the external surface of described top connection and is connected with the upper surface of described urceolus, and described anticollision ring has crashproof inclined-plane.
7. sand blast sliding sleeve as claimed in claim 1, it is characterized in that, described sand blast sliding sleeve also comprises " O " shape sealing ring, and described " O " shape sealing ring is separately positioned on the junction of described urceolus and described lower contact, described inner sliding sleeve and the junction of described lower contact and the junction of described urceolus and described top connection.
8. sand blast sliding sleeve as claimed in claim 1, it is characterized in that, described sand blast sliding sleeve also comprises anti-turn screw and backing-up screw; Described urceolus is threaded with described lower contact, and described anti-turn screw is fixedly connected with described urceolus and described lower contact; Described top connection is threaded with described spring detent, and described backing-up screw is fixedly connected with described top connection and described spring detent.
9. a separate-layer string, is characterized in that, described separate-layer string comprises the sand blast sliding sleeve as described in claim 1 to 8 any one.
10. separate-layer string as claimed in claim 9, it is characterized in that, described separate-layer string also comprises ball seat bottom sleeve pipe, oil pipe, three packers and, and the quantity of described sand blast sliding sleeve is two; Described cover circumference of cannon bone overlaps described oil pipe, described oil pipe is arranged from top to bottom, described bottom ball seat is arranged on the lower end of described oil pipe, and described three packers connect described oil pipe from top to bottom to form layering, and each sand blast sliding sleeve to be arranged between two adjacent packers and to connect described oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420820711.9U CN204371290U (en) | 2014-12-19 | 2014-12-19 | Sand blast sliding sleeve and separate-layer string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420820711.9U CN204371290U (en) | 2014-12-19 | 2014-12-19 | Sand blast sliding sleeve and separate-layer string |
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| Publication Number | Publication Date |
|---|---|
| CN204371290U true CN204371290U (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420820711.9U Expired - Fee Related CN204371290U (en) | 2014-12-19 | 2014-12-19 | Sand blast sliding sleeve and separate-layer string |
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| CN (1) | CN204371290U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150124A (en) * | 2016-12-06 | 2018-06-12 | 中国石油天然气股份有限公司 | A kind of hierarchical process tubing string gradually deblocking release device |
| CN110485926A (en) * | 2019-08-27 | 2019-11-22 | 中国石油大学(北京) | Rail mounted radial well guider layer-changing device |
-
2014
- 2014-12-19 CN CN201420820711.9U patent/CN204371290U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150124A (en) * | 2016-12-06 | 2018-06-12 | 中国石油天然气股份有限公司 | A kind of hierarchical process tubing string gradually deblocking release device |
| CN108150124B (en) * | 2016-12-06 | 2020-07-10 | 中国石油天然气股份有限公司 | Layered process tubular column step-by-step deblocking and unfreezing device |
| CN110485926A (en) * | 2019-08-27 | 2019-11-22 | 中国石油大学(北京) | Rail mounted radial well guider layer-changing device |
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| 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: 20150603 |