CN109869127A - C ring sand blower of sliding sleeve and its application method - Google Patents
C ring sand blower of sliding sleeve and its application method Download PDFInfo
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- CN109869127A CN109869127A CN201910184411.3A CN201910184411A CN109869127A CN 109869127 A CN109869127 A CN 109869127A CN 201910184411 A CN201910184411 A CN 201910184411A CN 109869127 A CN109869127 A CN 109869127A
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- central tube
- ball seat
- sand blower
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- 239000004576 sand Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 32
- 210000002445 nipple Anatomy 0.000 claims abstract description 29
- 238000005488 sandblasting Methods 0.000 claims abstract description 17
- 230000000694 effects Effects 0.000 claims abstract description 9
- 230000000712 assembly Effects 0.000 claims abstract description 4
- 238000000429 assembly Methods 0.000 claims abstract description 4
- 238000009827 uniform distribution Methods 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 15
- 230000009471 action Effects 0.000 claims description 2
- 238000005304 joining Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 2
- 235000014676 Phragmites communis Nutrition 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 5
- 210000000664 rectum Anatomy 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- Jet Pumps And Other Pumps (AREA)
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Abstract
The present invention relates to wellfracturing apparatus fields, and in particular to arrives C ring sand blower of sliding sleeve and its application method.Including top connection, outer working tube, lower contact, inner sliding sleeve, hole of sandblasting is offered on the side wall of top connection, inner sliding sleeve lower end outer rim is threaded with interior seating nipple, sliding is provided with central tube in inner sliding sleeve, spring is arranged on central tube between upper land and inner sliding sleeve lower end, circumference uniform distribution offers multiple inlet openings on central tube, interior seating nipple lower end inner edge is threaded with seal head, seal head upper end inner edge is threaded with undertaking cylinder, it accepts in the interior seating nipple between cylinder upper end and central tube lower end and is laminated with multiple ring set assemblies, ball seat is provided in the ring set assembly of bottom.The present invention, all sliding sleeves unify latus rectum, and latus rectum is greater than general sliding sleeve, reduces throttle effect, institute's pitching is uniform sizes, can reduce input cost, can be used for the more hole conditions of straight well, horizontal well, directional well, it is multi-environment, sealing series can be increased, reduce difficulty of construction.
Description
Technical field
The present invention relates to wellfracturing apparatus fields, and in particular to arrives C ring sand blower of sliding sleeve and its application method.
Background technique
It is currently used for the sanding machine of fixed tubular column, is only classified in the upper surface of sliding sleeve and ball, the layer position that feature is exactly point
More, diameter can be gradually reduced sliding sleeve from top to bottom, and institute's pitching diameter can be also gradually reduced, due to the limitation of size, sealing grade
Number will not be too many, supporting tool also bad production, in the construction process the too small sliding sleeve of diameter, will cause no small fluid mill
Resistance reduces scope of construction item to improve difficulty of construction.
Summary of the invention
Technical problem to be solved by the present invention lies in a kind of all sliding sleeves to unify latus rectum, can reduce throttle effect, institute
Pitching is uniform sizes, can be suitable for straight well, horizontal well, the more hole conditions of directional well, multi-environment C ring sand blower of sliding sleeve and its
Application method.
To achieve the goals above, present invention provide the technical scheme that
C ring sand blower of sliding sleeve, including top connection, top connection lower thread are connected with outer working tube, outer working tube lower end spiral shell
Line is connected with lower contact, and hole of sandblasting is offered on the side wall of top connection, is arranged with inner sliding sleeve in top connection, inner sliding sleeve upper end with it is upper
Connector is connected by shear pin, and inner sliding sleeve lower end outer rim is threaded with interior seating nipple, and sliding is provided with central tube in inner sliding sleeve, in
Heart pipe lower part is provided with the upper land expanded outwardly, is arranged with spring on the central tube between upper land and inner sliding sleeve lower end, in
Circumference uniform distribution offers multiple inlet openings on heart pipe, and the cavity on inlet opening and central tube between land and inner sliding sleeve lower end connects
Logical, interior seating nipple lower end inner edge is threaded with seal head, and seal head upper end inner edge is threaded with undertaking cylinder, accepts cylinder top
It is provided with lower land, accepts in the interior seating nipple between cylinder upper end and central tube lower end and is laminated with multiple ring set assemblies, bottom
Ring set assembly be set in accept and cylinder upper end and stopped by lower land, ball seat, ball seat quilt are provided in the ring set assembly of bottom
It accepts cylinder upper end to stop, ball seat upper end is provided with the sealing surface for sealing with pitching, and ball seat is cut into two by laser R-joining
Part, ball seat outer rim offer the second annular groove, are arranged with sealing ring in the second annular groove,
Ring set assembly includes C ring, and C ring outer rim offers the first annular groove, C-spring piece is equipped in the first annular groove.
Specifically, being arranged with the rubber in sealing contact with top connection inner edge on inner sliding sleeve above and below the aperture
Circle, central tube lower end outer rim are arranged with the rubber ring in sealing contact with interior seating nipple inner edge, inner sliding sleeve inner edge and central tube outer rim
By seal with elastometic washer, seal head lower end outer rim is arranged with sealing ring, and sealing ring is provided between lower contact and outer working tube.
Specifically, central tube lower end inner edge is fixed with rubber layer.
Specifically, circumference locally offers multiple gas vents on interior seating nipple between the seal head and lower land.
Specifically, ball seat upper end outer is provided with chamfering.
Compared with prior art, the invention has the benefit that
The present invention, structure is simple, easy to use and operate, and all sliding sleeves unify latus rectum, and latus rectum is greater than general sliding sleeve, reduces
Throttle effect, institute's pitching is uniform sizes, can reduce input cost, can be used for the more hole conditions of straight well, horizontal well, directional well,
It is multi-environment, sealing series can be increased, reduce difficulty of construction.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the enlarged drawing of a-quadrant in Fig. 1.
Fig. 3 is the enlarged drawing of B area in Fig. 1.
Fig. 4 is the structural schematic diagram of lantern ring assembly.
Fig. 5 is the structural schematic diagram of C ring.
Fig. 6 is the structural schematic diagram of ball seat.
Specific embodiment
As shown in figures 1 to 6, C ring sand blower of sliding sleeve, including top connection 1,1 lower thread of top connection are connected with outer working tube 4,
4 lower thread of outer working tube is connected with lower contact 11, and hole 13 of sandblasting is offered on the side wall of top connection 1, is arranged in top connection 1
Inner sliding sleeve 2,2 upper end of inner sliding sleeve are connect with top connection 1 by shear pin 12, and 2 lower end outer rim of inner sliding sleeve is threaded with interior seating nipple
6, the interior sliding of inner sliding sleeve 2 is provided with central tube 3, and the 3 lower end inner edge of central tube is fixed with rubber layer 15, and 3 lower part of central tube is set
It is equipped with the upper land 20 expanded outwardly, is arranged with spring 5, central tube on the central tube 3 between 2 lower end of upper land 20 and inner sliding sleeve
Circumference uniform distribution offers multiple inlet openings 14 on 3, the sky on inlet opening 14 and central tube 3 between 2 lower end of land 20 and inner sliding sleeve
Chamber connection, interior 6 lower end inner edge of seating nipple is threaded with seal head 10, the interior work between the seal head 10 and lower land 21
Circumference locally offers multiple gas vents 22 on cylinder 6, and 10 upper end inner edge of seal head, which is threaded with, accepts cylinder 9, accepts 9 top of cylinder
It is provided with lower land 21, accepts in the interior seating nipple 6 between 9 upper end of cylinder and 3 lower end of central tube and is laminated with multiple ring set assemblies, most
The ring set assembly of lower section, which is set in, to be accepted 9 upper end of cylinder and is stopped by lower land 21, is provided with ball seat in the ring set assembly of bottom
8, the 8 upper end outer of ball seat is provided with chamfering, and ball seat 8 is stopped by 9 upper end of undertaking cylinder, 8 upper end of ball seat be provided with for throwing
The sealing surface 18 of ball sealing, ball seat 8 are cut into two parts by laser R-joining, and 8 outer rim of ball seat offers the second annular groove 19, and second
Sealing ring is arranged in annular groove 19.
Ring set assembly includes C ring 7, and 7 outer rim of C ring offers the first annular groove 17, is equipped with C-spring piece in the first annular groove 17
16。
The rubber in sealing contact with 1 inner edge of top connection is arranged on inner sliding sleeve 2 above and below the hole 13 of sandblasting
Circle, 3 lower end outer rim of central tube are arranged with the rubber ring in sealing contact with interior 6 inner edge of seating nipple, 2 inner edge of inner sliding sleeve and central tube 3
Outer rim is arranged with sealing ring, is provided between lower contact 1 and outer working tube 4 by seal with elastometic washer, 10 lower end outer rim of seal head
Sealing ring.
In use, multiple C ring sand blower of sliding sleeve are connected on tubing string and are transferred in well, multiple C rings are sliding from top to bottom
The number for covering the lantern ring assembly of sanding machine is successively reduced, and first layer is not necessarily to C ring sand blower of sliding sleeve, can be flowed out by tubing string lower port
Fracturing fluid carries out pressure break to first layer, and the number of lantern ring assembly is 0 in the C ring sand blower of sliding sleeve of the second layer, and at this time the
Ball seat 8 is located inside 3 lower end of central tube in two layers of C ring sand blower of sliding sleeve, the rubber layer of ball seat 8 and 3 lower end inner edge of central tube
15 is in sealing contact, and 3 upper end of central tube is located at 13 lower section of hole of sandblasting of top connection 1, and lantern ring is total in the C ring sand blower of sliding sleeve of third layer
At number be 1, from top to bottom in C ring sand blower of sliding sleeve lantern ring assembly number be successively increase,
Pitching, the sealing after pitching enters on the ball seat 8 in C ring sand blower of sliding sleeve and on ball seat 8 are put into tubing string
Face 18 seals, and is passed through fracturing fluid into tubing string at this time, and pitching has the trend moved downward under the pressure effect of fracturing fluid, together
When fracturing fluid enter to apply upper land 20 in the annular space between interior seating nipple 6 and central tube 3 by inlet opening 14 and press
Power, at this time pitching will make dimeric ball seat 8 expand, and ball seat 8 will make the C where it after ball seat 8 is expanded
Ring 7 is expanded outward, and the C-spring piece 16 of 7 outer rim of C ring is compressed, when C ring 7 is expanded to lower 21 outside of land, spring 5,
Between interior seating nipple 6 and central tube 3 in annular space under the thrust of fracturing fluid, it will be pushed away with the C ring 7 that ball seat 8 is expanded
To accepting between cylinder 9 and interior seating nipple 6, gas vent 22 can prevent lantern ring assembly while pitching downlink enters lower section C ring and slides
It covers in sanding machine, the lantern ring assembly of 8 top of ball seat is about to 8 sets of ball seat inside it and quilt under the elastic force effect of spring 5 at this time
Lower land 21 supports,
The lantern ring assembly that pitching will make to accept after C ring sand blower of sliding sleeve is primary between cylinder 9 and central tube 3 is reduced
One, under the action of spring 5, central tube 3 is gradually close to cylinder 9 is accepted, when pitching enters the C ring sliding sleeve sandblasting of the second layer
When in device, because 3 upper end of central tube of the C ring sand blower of sliding sleeve of the second layer is located at the lower section of hole 13 of sandblasting, 3 lower end of central tube is by ball
Seat 8 carries out the enclosure, and after pitching is fallen on ball seat 8, ball seat 8 will not after pitching and the sealing of ball seat 8 and the pressure by fracturing fluid
It expands outward, under the pressure effect of fracturing fluid, pitching, accepts cylinder 9, seal head 10, interior seating nipple 6 and inner sliding sleeve at ball seat 8
2 will in outer working tube 4 downlink, while shear pin 12 is cut, and seal head 10 injects in lower contact 11, and hole 13 of sandblasting is beaten
It opens, fracturing fluid will be flowed out by hole 13 of sandblasting, pressure break is carried out to the second layer,
Accepted as pitching number successively increases, in C ring sand blower of sliding sleeve lantern ring assembly between cylinder 9 and central tube 3 according to
Secondary enter is accepted between cylinder 9 and interior seating nipple 6, and when accepting in C ring sand blower of sliding sleeve, the lantern ring between cylinder 9 and central tube 3 is total
When at being all introduced between undertaking cylinder 9 and interior seating nipple 6, being accepted between cylinder 9 and central tube 3 in next pitching does not have lantern ring
The hole 13 of sandblasting of the C ring sand blower of sliding sleeve of assembly will be opened and carry out pressure break to the layer where it.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (6)
1.C ring sand blower of sliding sleeve, including top connection (1), which is characterized in that top connection (1) lower thread is connected with outer working tube
(4), outer working tube (4) lower thread is connected with lower contact (11), and hole of sandblasting (13) are offered on the side wall of top connection (1), on
It is arranged with inner sliding sleeve (2) in connector (1), inner sliding sleeve (2) upper end is connect with top connection (1) by shear pin (12), under inner sliding sleeve (2)
End outer rim is threaded with interior seating nipple (6), and sliding is provided with central tube (3) in inner sliding sleeve (2), the setting of central tube (3) lower part
There is the upper land (20) expanded outwardly, is arranged with spring on the central tube (3) between upper land (20) and inner sliding sleeve (2) lower end
(5), circumference uniform distribution offers multiple inlet openings (14) on central tube (3), on inlet opening (14) and central tube (3) land (20) and
Cavity connection between inner sliding sleeve (2) lower end, interior seating nipple (6) lower end inner edge is threaded with seal head (10), seal head
(10) upper end inner edge be threaded with accept cylinder (9), accept cylinder (9) top be provided with lower land (21), accept cylinder (9) upper end with
Multiple ring set assemblies are laminated in interior seating nipple (6) between central tube (3) lower end, the ring set assembly of bottom is set in undertaking
Cylinder (9) upper end is simultaneously stopped by lower land (21), is provided with ball seat (8) in the ring set assembly of bottom, ball seat (8) is by undertaking cylinder
(9) upper end stops, and ball seat (8) upper end is provided with the sealing surface (18) for sealing with pitching, and ball seat (8) is cut by laser R-joining
Two parts are segmented into, ball seat (8) outer rim offers the second annular groove (19), it is arranged with sealing ring in the second annular groove (19),
Ring set assembly includes C ring (7), and C ring (7) outer rim offers the first annular groove (17), is equipped with C-shaped bullet in the first annular groove (17)
Reed (16).
2. C ring sand blower of sliding sleeve according to claim 1, which is characterized in that interior above and below the hole of sandblasting (13)
Be arranged on sliding sleeve (2) with top connection (1) inner edge rubber ring in sealing contact, central tube (3) lower end outer rim be arranged with it is interior
Seating nipple (6) inner edge rubber ring in sealing contact, inner sliding sleeve (2) inner edge and central tube (3) outer rim pass through seal with elastometic washer, sealing
Head (10) lower end outer rim is arranged with sealing ring, is provided with sealing ring between lower contact (1) and outer working tube (4).
3. C ring sand blower of sliding sleeve according to claim 1, which is characterized in that central tube (3) the lower end inner edge is fixed with rubber
Glue-line (15).
4. C ring sand blower of sliding sleeve according to claim 1, which is characterized in that the seal head (10) and lower land (21) it
Between interior seating nipple (6) on circumference locally offer multiple gas vents (22).
5. C ring sand blower of sliding sleeve according to claim 1, which is characterized in that ball seat (8) the upper end outer is provided with down
Angle.
6. the application method based on C ring sand blower of sliding sleeve described in claim 1, which is characterized in that in use, by multiple C rings
Sand blower of sliding sleeve is connected on tubing string and transfers in well, from top to bottom the number of the lantern ring assembly of multiple C ring sand blower of sliding sleeve
Successively reducing, first layer is not necessarily to C ring sand blower of sliding sleeve, and fracturing fluid being flowed out by tubing string lower port, pressure break is carried out to first layer,
The number of lantern ring assembly is 0 in the C ring sand blower of sliding sleeve of the second layer, at this time ball in the C ring sand blower of sliding sleeve of the second layer
Seat (8) is located inside central tube (3) lower end, and ball seat (8) and the rubber layer (15) of central tube (3) lower end inner edge are in sealing contact, in
Heart pipe (3) upper end is located at below the hole of sandblasting (13) of top connection (1), of lantern ring assembly in the C ring sand blower of sliding sleeve of third layer
Number is 1, and the number of lantern ring assembly is successively to increase in C ring sand blower of sliding sleeve from top to bottom,
Pitching, the sealing after pitching enters on the ball seat (8) in C ring sand blower of sliding sleeve and on ball seat (8) are put into tubing string
Face (18) sealing is passed through fracturing fluid into tubing string at this time, and pitching has the trend moved downward under the pressure effect of fracturing fluid,
Concurrent fracturing liquid is entered in the annular space between interior seating nipple (6) and central tube (3) by inlet opening (14) to upper land
(20) apply pressure, pitching at this time will make dimeric ball seat (8) expand, ball seat (8) expansion after ball seat (8) just
So that the C ring (7) where it is expanded outward, the C-spring piece (16) of C ring (7) outer rim is compressed for meeting, when C ring (7) is expanded to
When on the outside of lower land (21), the thrust of fracturing fluid is made in annular space between spring (5), interior seating nipple (6) and central tube (3)
Under, it will be pushed to and be accepted between cylinder (9) and interior seating nipple (6) with the C ring (7) that ball seat (8) are expanded, gas vent (22) can
Preventing lantern ring assembly, pitching downlink enters in the C ring sand blower of sliding sleeve of lower section simultaneously, and the lantern ring assembly above ball seat (8) exists at this time
It is about to ball seat (8) set under the elastic force effect of spring (5) to support inside it and by lower land (21),
The lantern ring assembly that pitching will make to accept after C ring sand blower of sliding sleeve is primary between cylinder (9) and central tube (3) is reduced
One, under the action of spring (5), central tube (3) is gradually close to cylinder (9) are accepted, when the C ring that pitching enters the second layer is sliding
When covering in sanding machine, because central tube (3) upper end of the C ring sand blower of sliding sleeve of the second layer is located at below hole (13) of sandblasting, center
It manages (3) lower end and ball seat (8) is subjected to the enclosure, after pitching is fallen on ball seat (8), when pitching and ball seat (8) sealing and by pressure break
Ball seat (8) will not be expanded outward after the pressure of liquid, fracturing fluid pressure effect under, pitching, ball seat (8), accept cylinder (9),
Seal head (10), interior seating nipple (6) and inner sliding sleeve (2) will be in outer working tube (4) interior downlinks, while shear pin (12) is cut,
Seal head (10) injects in lower contact (11), and hole of sandblasting (13) are opened, and fracturing fluid will be flowed out by hole of sandblasting (13), to the
Two layers of progress pressure break,
Accepted as pitching number successively increases, in C ring sand blower of sliding sleeve lantern ring assembly between cylinder (9) and central tube (3) according to
Secondary enter is accepted between cylinder (9) and interior seating nipple (6), in C ring sand blower of sliding sleeve between undertaking cylinder (9) and central tube (3)
Lantern ring assembly be all introduced into when accepting between cylinder (9) and interior seating nipple (6), undertaking cylinder (9) and center in next pitching
There is no the hole of sandblasting (13) of the C ring sand blower of sliding sleeve of lantern ring assembly that will be opened and carry out to the layer where it between pipe (3)
Pressure break.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910184411.3A CN109869127B (en) | 2019-03-12 | 2019-03-12 | C-ring sliding sleeve sand blaster and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910184411.3A CN109869127B (en) | 2019-03-12 | 2019-03-12 | C-ring sliding sleeve sand blaster and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109869127A true CN109869127A (en) | 2019-06-11 |
| CN109869127B CN109869127B (en) | 2024-05-17 |
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ID=66920293
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910184411.3A Active CN109869127B (en) | 2019-03-12 | 2019-03-12 | C-ring sliding sleeve sand blaster and application method thereof |
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| Country | Link |
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| CN (1) | CN109869127B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116084905A (en) * | 2023-03-13 | 2023-05-09 | 大庆市璞庆钻采设备制造有限公司 | Sand blaster for oilfield stratum fracturing |
| CN116696329A (en) * | 2023-08-03 | 2023-09-05 | 东营垣发石油科技有限公司 | Directional verification device and method for horizontal well |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485754A (en) * | 2013-10-14 | 2014-01-01 | 中国石油化工股份有限公司 | Integrated underground hydraulic control fully-opened type sliding sleeve abrasive blasting and packing staged fracturing device |
| CN204024624U (en) * | 2014-06-20 | 2014-12-17 | 中国石油天然气股份有限公司 | Multistage big orifice annular space throttling sandblaster |
| CA2856184A1 (en) * | 2013-07-10 | 2015-01-10 | Donald Getzlaf | Fracturing valve |
| CN104632169A (en) * | 2013-11-15 | 2015-05-20 | 中国石油天然气股份有限公司 | Infinite-order fracturing sand blasting sliding sleeve and technological method |
| CN109281646A (en) * | 2018-10-27 | 2019-01-29 | 濮阳东昊机械电子有限公司 | Small-well cracking tubing string and its application method |
| CN210033397U (en) * | 2019-03-12 | 2020-02-07 | 濮阳博瑞特石油工程技术有限公司 | C-ring sliding sleeve sand blower |
-
2019
- 2019-03-12 CN CN201910184411.3A patent/CN109869127B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2856184A1 (en) * | 2013-07-10 | 2015-01-10 | Donald Getzlaf | Fracturing valve |
| CN103485754A (en) * | 2013-10-14 | 2014-01-01 | 中国石油化工股份有限公司 | Integrated underground hydraulic control fully-opened type sliding sleeve abrasive blasting and packing staged fracturing device |
| CN104632169A (en) * | 2013-11-15 | 2015-05-20 | 中国石油天然气股份有限公司 | Infinite-order fracturing sand blasting sliding sleeve and technological method |
| CN204024624U (en) * | 2014-06-20 | 2014-12-17 | 中国石油天然气股份有限公司 | Multistage big orifice annular space throttling sandblaster |
| CN109281646A (en) * | 2018-10-27 | 2019-01-29 | 濮阳东昊机械电子有限公司 | Small-well cracking tubing string and its application method |
| CN210033397U (en) * | 2019-03-12 | 2020-02-07 | 濮阳博瑞特石油工程技术有限公司 | C-ring sliding sleeve sand blower |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116084905A (en) * | 2023-03-13 | 2023-05-09 | 大庆市璞庆钻采设备制造有限公司 | Sand blaster for oilfield stratum fracturing |
| CN116696329A (en) * | 2023-08-03 | 2023-09-05 | 东营垣发石油科技有限公司 | Directional verification device and method for horizontal well |
| CN116696329B (en) * | 2023-08-03 | 2023-10-31 | 东营垣发石油科技有限公司 | Directional verification device and method for horizontal well |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109869127B (en) | 2024-05-17 |
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