CN112360423A - Anti-splash protection sand blasting device and method - Google Patents
Anti-splash protection sand blasting device and method Download PDFInfo
- Publication number
- CN112360423A CN112360423A CN202110032424.6A CN202110032424A CN112360423A CN 112360423 A CN112360423 A CN 112360423A CN 202110032424 A CN202110032424 A CN 202110032424A CN 112360423 A CN112360423 A CN 112360423A
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- Prior art keywords
- sliding sleeve
- sand blasting
- sand
- sleeve
- wall
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- 238000005488 sandblasting Methods 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title abstract description 12
- 239000000956 alloy Substances 0.000 claims abstract description 57
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 53
- 238000007789 sealing Methods 0.000 claims abstract description 32
- 238000010008 shearing Methods 0.000 claims abstract description 10
- 239000004576 sand Substances 0.000 claims description 26
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 238000005507 spraying Methods 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000005422 blasting Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 15
- 238000005299 abrasion Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/114—Perforators using direct fluid action on the wall to be perforated, e.g. abrasive jets
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
The invention provides a splash-proof sand blasting protection device and a method, and the technical scheme is as follows: the lower end of the upper joint is movably connected with the sand blasting body, the lower end of the sand blasting body is movably connected with the lower joint, a sliding sleeve is arranged in an inner cavity of the sand blasting body, and the lower end of the sliding sleeve is arranged at the upper end of the lower joint in an embedded mode and fixed through a shearing pin; the outer side of the upper end of the sand blasting body is sleeved with a flow guide alloy sleeve, the outer side of the flow guide alloy sleeve is provided with an outer sleeve, the inner wall of the lower end of the outer sleeve is movably connected with the outer wall of the lower end of the sand blasting body, and the inner wall of the upper end of the outer sleeve is provided with a splash guard. The invention has the beneficial effects that: the structure of multiple groups of hard alloy is adopted, so that the wear resistance is improved, and the fracturing construction with ultra-large displacement can be met; the upper end of the sliding sleeve is embedded with the hard alloy material, so that multi-layer fracturing construction can be met, abrasion of multiple sealing spherical surfaces in the construction process is avoided, and accidents are reduced; the structural design of the alloy splash guard can realize effective protection of the sleeve; the construction success rate is improved, and the construction risk is reduced.
Description
Technical Field
The invention relates to oil exploitation equipment and a method, in particular to a splash-proof sand blasting device and a method.
Background
At present, in the oil well exploitation process, the separate layer fracturing technology has been applied to the oil field production increasing operation by a large scale, sand blasting unit is very critical instrument in the separate layer fracturing, the fracturing is accomplished through the cooperation construction with the packer, through the steel ball that drops into corresponding in the work progress, open the sandblast passageway, carry out the fracturing construction, the fracturing construction of super large discharge capacity and super large sand volume can't be realized to conventional sand blasting unit, and prior art is serious to the sleeve pipe damage, cause the fracturing construction to accomplish the back, the sleeve pipe fault-breaking deformation is serious, later stage dressing cost improves greatly, and influence later stage production.
Disclosure of Invention
The invention aims to provide an erosion-resistant splash-proof sand blasting device with a flow guide function and a method thereof aiming at the defects in the prior art.
The invention provides a splash-proof sand blasting protection device, which adopts the technical scheme that: the sand blasting device comprises an upper joint, a sand blasting body, a diversion alloy sleeve, a sliding sleeve, a splash guard, an outer sleeve, a shearing pin and a lower joint, wherein the lower end of the upper joint is movably connected with the sand blasting body, the lower end of the sand blasting body is movably connected with the lower joint, the sliding sleeve is arranged in an inner cavity of the sand blasting body, the upper end of the sliding sleeve is arranged in the sand blasting body, and the lower end of the sliding sleeve is arranged in the upper end of the lower joint and fixed through the shearing pin; the utility model discloses a sand blasting machine, including sandblast body, sandblast body and water conservancy diversion alloy cover, the upper end outside cover of sandblast body is equipped with the water conservancy diversion alloy cover, be equipped with a plurality of sandblast passageways on sandblast body and the water conservancy diversion alloy cover, and the outside of water conservancy diversion alloy cover is equipped with the overcoat, and overcoat lower extreme inner wall and sandblast body lower extreme outer wall swing joint, and the upper end inner wall of overcoat is equipped with the splashproof cover, the passageway of splashproof.
Preferably, the main sand blasting channel is arranged in the sand blasting body, and the sand blasting body is provided with more than one side sand blasting holes.
Preferably, the lower end of the diversion alloy sleeve is provided with an outer sand-blasting hole, and the outer sand-blasting hole of the diversion alloy sleeve corresponds to the side sand-blasting hole of the sand-blasting body to form a sand-blasting channel.
Preferably, the annular space formed between the splash guard and the diversion alloy sleeve is a splash guard cavity.
Preferably, the guide alloy sleeve and the splash guard are made of hard alloy YG 8.
Preferably, above-mentioned sliding sleeve comprises alloy cover, last rubber ring groove, sliding sleeve body, cotter way and lower rubber ring groove, the alloy cover is connected as an organic wholely through inlaying the mode with the sliding sleeve body, is equipped with last rubber ring groove at the upper end outer wall of sliding sleeve body, and the lower extreme outer wall is equipped with down the rubber ring groove, is equipped with the cotter way at the downside outer wall of sliding sleeve body for with the cooperation of shearing pin, make the sliding sleeve fix in the lower clutch upper end.
Preferably, the upper end of the lower joint is provided with an external threaded hole, and the upper end of the lower joint is in threaded connection with the lower end of the sand blasting body through the external threaded hole; the lower end inner cavity of the lower joint is provided with a sliding sleeve limiting table, and the sliding sleeve is connected with the sliding sleeve limiting table when being knocked down by the steel ball.
Preferably, be equipped with first sealing washer between above-mentioned top connection lower extreme inner wall and the sandblast body upper end outer wall, set up second sealing washer between sliding sleeve upper end outer wall and the sandblast body inner wall, set up third sealing washer between overcoat lower extreme inner wall and the sandblast body lower extreme outer wall, set up fourth sealing washer between sliding sleeve lower extreme outer wall and the lower clutch inner wall, set up fifth sealing washer between sandblast body lower extreme inner wall and the lower clutch upper end outside.
The invention provides a using method of a splash-proof sand blasting protection device, which adopts the technical scheme that: the method comprises the following steps:
the anti-splash protection sand blasting device is put into a designed underground position through an oil pipe, a wellhead manifold is fixed, then steel balls with corresponding specifications are put into the oil pipe, then hydraulic pressure is applied to the wellhead of the fracturing truck, the steel balls reach the upper end of the sliding sleeve under the action of gravity and inertia, a seal is formed between the steel balls and a large-angle sealing surface arranged at the top of the alloy sleeve, the steel balls and the sliding sleeve continue to be pressed to 16-18MPa, the steel balls and the sliding sleeve descend to shear a shear pin, and the sliding sleeve descends to a sliding sleeve limiting table at the lower end of the lower; the sand liquid enters the splash-proof protection cavity inside the splash guard after reversing through the main sand spraying channel inside the sand spraying body and the side sand spraying hole on the sand spraying body and the outer sand spraying hole on the flow guide alloy sleeve, and then the sand liquid enters the stratum after passing through the annular space between the splash-proof protection sand spraying device and the sleeve.
Compared with the prior art, the invention has the following beneficial effects:
1. by adopting a multi-group hard alloy structure, the wear resistance is improved, and the fracturing construction with ultra-large displacement (10 m), ultra-large sand ratio (80%) and ultra-large sand quantity (single-layer 150 m) can be met;
2. the upper end of the sliding sleeve is embedded with the hard alloy material, so that multi-layer fracturing construction can be met, abrasion of multiple sealing spherical surfaces in the construction process is avoided, and accidents are reduced;
3. the structural design of the alloy splash guard can realize effective protection of the sleeve;
4. the construction success rate is improved, and the construction risk is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view showing the sand blasting enabled state of the present invention;
FIG. 3 is a schematic view of the A-A structure of FIG. 1;
FIG. 4 is a schematic view of the structure B-B of FIG. 1;
FIG. 5 is a schematic view of the construction of a guide alloy sleeve;
FIG. 6 is a schematic structural view of the sliding sleeve;
in the upper diagram: the anti-splash device comprises an upper joint 1, a first sealing ring 2, a sand blasting body 3, a flow guide alloy sleeve 4, a second sealing ring 5, a sliding sleeve 6, an anti-splash cover 7, an outer sleeve 8, a third sealing ring 9, a fourth sealing ring 10, a shearing pin 11, a fifth sealing ring 12, a lower joint 13, an alloy sleeve 601, an upper sealing ring groove 602, a sliding sleeve body 603, a pin groove 604, a lower sealing ring groove 605, a sliding sleeve limiting table 13.1, a main sand blasting channel 111, a side sand blasting hole 222, an outer sand blasting hole 333 and an anti-splash protection cavity 444.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Referring to fig. 1-2, the splash-proof sand blasting device comprises an upper connector 1, a sand blasting body 3, a flow guide alloy sleeve 4, a sliding sleeve 6, a splash guard 7, an outer sleeve 8, a shearing pin 11 and a lower connector 13, wherein the lower end of the upper connector 1 is movably connected with the sand blasting body 3, the lower end of the sand blasting body 3 is movably connected with the lower connector 13, the sliding sleeve 6 is arranged in an inner cavity of the sand blasting body 3, the upper end of the sliding sleeve 6 is arranged in the sand blasting body 3, and the lower end of the sliding sleeve 6 is arranged in the upper end of the lower connector 13 and is fixed through the shearing pin 11; the upper end outside cover of sandblast body 3 is equipped with guide alloy cover 4, be equipped with a plurality of sandblast passageways on sandblast body 3 and the guide alloy cover 4, the outside of guide alloy cover 4 is equipped with overcoat 8, and 8 lower extreme inner walls of overcoat and 3 lower extreme outer walls swing joint of sandblast body, and the upper end inner wall of overcoat 8 is equipped with splash guard 7, and splash guard's passageway when making to form the sandblast between splash guard 7 and the guide alloy cover 4.
The main blasting channel 111 is arranged inside the blasting main body 3, and the blasting main body 3 is provided with more than one side blasting holes 222.
Referring to fig. 3, the lower end of the diversion alloy sleeve 4 is provided with an outer sand blasting hole 333, and the outer sand blasting hole 333 of the diversion alloy sleeve 4 corresponds to the side sand blasting hole 222 of the sand blasting body 3 and forms a sand blasting channel.
The annular space formed between the splash guard 7 and the diversion alloy sleeve 4 is a splash guard chamber 444.
Referring to fig. 4, the sliding sleeve 6 according to the present invention is composed of an alloy sleeve 601, an upper rubber ring groove 602, a sliding sleeve body 603, a pin groove 604 and a lower rubber ring groove 605, wherein the alloy sleeve 601 and the sliding sleeve body 603 are connected into a whole by an embedding manner, the upper rubber ring groove 602 is disposed on the outer wall of the upper end of the sliding sleeve body 603, the lower rubber ring groove 605 is disposed on the outer wall of the lower end of the sliding sleeve body 603, and the pin groove 604 is disposed on the outer wall of the lower side of the sliding sleeve body 603 for cooperating with the shear pin 11 to fix the sliding sleeve 6 on the upper end of the.
The guide alloy sleeve 4, the splash guard 7 and the alloy sleeve 601 are all made of hard alloy YG 8.
In addition, the upper end of the lower joint 13 is provided with an external threaded hole, and is in threaded connection with the lower end of the sand blasting body 3 through the external threaded hole; the lower end inner cavity of the lower joint 13 is provided with a sliding sleeve limiting table 13.1, and when the sliding sleeve 6 is knocked down by the steel ball, the sliding sleeve limiting table 13.1 is used for bearing.
With reference to fig. 1 and 2, the seal ring according to the invention is described as follows: be equipped with first sealing washer 2 between 1 lower extreme inner wall of top connection and the 3 upper end outer walls of sandblast body, set up second sealing washer 5 between 6 upper end outer walls of sliding sleeve and the 3 inner walls of sandblast body, set up third sealing washer 9 between 8 lower extreme inner walls of overcoat and the 3 lower extreme outer walls of sandblast body, set up fourth sealing washer 10 between 6 lower extreme outer walls of sliding sleeve and the 13 inner walls of lower clutch, set up fifth sealing washer 12 between 3 lower extreme inner walls of sandblast body and the 13 upper ends of lower clutch outward.
The use method of the splash-proof sand blasting device comprises the following steps:
the anti-splash protection sand blasting device is put into a designed underground position through an oil pipe, a wellhead manifold is fixed, then steel balls with corresponding specifications are put into the oil pipe, then hydraulic pressure is applied to the wellhead of the fracturing truck, the steel balls reach the upper end of the sliding sleeve 6 under the action of gravity and inertia, a large-angle sealing surface arranged on the top of the alloy sleeve 601 forms sealing, the steel balls and the sliding sleeve 6 continue to be pressed to 16-18MPa, the steel balls and the sliding sleeve 6 move downwards to cut off the shearing pin 11, and the sliding sleeve 6 moves downwards to a sliding sleeve limiting table 13.1 at the lower end of the lower connector 13 to form sealing; the sand liquid enters a splash-proof protection cavity 444 inside the splash guard 7 after reversing through a main sand spraying channel 111 inside the sand spraying body 3, a side sand spraying hole 222 on the sand spraying body 3 and an outer sand spraying hole 333 on the flow guide alloy sleeve 4, and then the sand liquid enters the stratum after passing through an annular space between the splash-proof protection sand spraying device and the sleeve.
The device adopts multiple groups of hard alloy materials to improve the wear resistance of the device, and realizes effective protection of the sleeve through the alloy splash guard.
The above description is only a few of the preferred embodiments of the present invention, and any person skilled in the art may modify the above-described embodiments or modify them into equivalent ones. Therefore, the technical solution according to the present invention is subject to corresponding simple modifications or equivalent changes, as far as the scope of the present invention is claimed.
Claims (10)
1. The utility model provides a splashproof protection sand blasting unit, characterized by: the sand blasting device comprises an upper joint (1), a sand blasting body (3), a flow guide alloy sleeve (4), a sliding sleeve (6), a splash guard (7), an outer sleeve (8), a shearing pin (11) and a lower joint (13), wherein the lower end of the upper joint (1) is movably connected with the sand blasting body (3), the lower end of the sand blasting body (3) is movably connected with the lower joint (13), the sliding sleeve (6) is arranged in an inner cavity of the sand blasting body (3), the upper end of the sliding sleeve (6) is arranged in the sand blasting body (3), and the lower end of the sliding sleeve (6) is arranged in the upper end of the lower joint (13) and is fixed through the shearing pin (11); the utility model discloses a sand blasting machine, including sandblast body (3), sand blasting body (3) and water conservancy diversion alloy cover (4), the upper end outside cover of sandblast body (3) is equipped with water conservancy diversion alloy cover (4), be equipped with a plurality of sandblast passageways on sandblast body (3) and water conservancy diversion alloy cover (4), and the outside of water conservancy diversion alloy cover (4) is equipped with overcoat (8), and overcoat (8) lower extreme inner wall and sandblast body (3) lower extreme outer wall swing joint, and the upper end inner wall of overcoat (8) is equipped with splash guard (7), splash guard's passageway when making between splash guard (7.
2. The splashproof sand blasting apparatus of claim 1, characterized in that: the sand blasting machine is characterized in that a main sand blasting channel (111) is arranged inside the sand blasting body (3), and more than one side sand blasting hole (222) is formed in the sand blasting body (3).
3. The splashproof sandblasting apparatus of claim 2, wherein: the lower end of the diversion alloy sleeve (4) is provided with an outer sand-blasting hole (333), the outer sand-blasting hole (333) of the diversion alloy sleeve (4) corresponds to the side sand-blasting hole (222) of the sand-blasting body (3) and forms a sand-blasting channel.
4. The splashproof sandblasting apparatus of claim 3, wherein: the annular space formed between the splash guard (7) and the flow guide alloy sleeve (4) is a splash guard cavity (444).
5. The splashproof sand blasting unit of claim 1, 2, 3 or 4, characterized in that: the diversion alloy sleeve (4) and the splash guard (7) are both made of hard alloy materials.
6. The splashproof sand blasting apparatus of claim 1, characterized in that: sliding sleeve (6) comprise alloy cover (601), last rubber ring groove (602), sliding sleeve body (603), cotter groove (604) and lower rubber ring groove (605), alloy cover (601) is connected as an organic wholely through inlaying the mode with sliding sleeve body (603), is equipped with rubber ring groove (602) on the upper end outer wall of sliding sleeve body (603), and the lower extreme outer wall is equipped with lower rubber ring groove (605), is equipped with cotter groove (604) on the downside outer wall of sliding sleeve body (603) for with shear pin (11) cooperation, make sliding sleeve (6) fix in lower clutch (13) upper end.
7. The splashproof sandblasting apparatus of claim 6, wherein: the upper end of the alloy sleeve (601) is provided with a large-angle sealing surface for matching and sealing with the steel ball.
8. The splashproof sand blasting apparatus of claim 1, characterized in that: the upper end of the lower joint (13) is provided with an external threaded hole, and the lower end of the lower joint is in threaded connection with the lower end of the sand blasting body (3) through the external threaded hole; the lower end inner cavity of the lower joint (13) is provided with a sliding sleeve limiting table (13.1), and when the sliding sleeve (6) is knocked down by the steel ball, the sliding sleeve limiting table (13.1) is used for bearing.
9. The splashproof sand blasting apparatus of claim 1, characterized in that: be equipped with first sealing washer (2) between upper joint (1) lower extreme inner wall and sandblast body (3) upper end outer wall, set up second sealing washer (5) between sliding sleeve (6) upper end outer wall and sandblast body (3) inner wall, set up third sealing washer (9) between overcoat (8) lower extreme inner wall and sandblast body (3) lower extreme outer wall, set up fourth sealing washer (10) between sliding sleeve (6) lower extreme outer wall and lower clutch (13) inner wall, set up fifth sealing washer (12) between sandblast body (3) lower extreme inner wall and lower clutch (13) upper end outward.
10. Use of a splatter-proof blasting apparatus according to any of claims 1 to 4 and 6 to 9, characterized in that it comprises the following steps:
the anti-splash protection sand blasting device is put into a designed underground position through an oil pipe, a wellhead manifold is fixed, then steel balls with corresponding specifications are put into the oil pipe, then hydraulic pressure is applied to the wellhead of the fracturing truck, the steel balls reach the upper end of the sliding sleeve (6) under the action of gravity and inertia, a large-angle sealing surface arranged on the top of the alloy sleeve (601) forms sealing, the steel balls and the sliding sleeve (6) continue to be pressed to 16-18MPa, the steel balls and the sliding sleeve (6) downwards shear the shear pin (11), and the sliding sleeve (6) downwards moves to a sliding sleeve limiting table (13.1) at the lower end of the lower joint (13) to form; the sand liquid enters a splash-proof protection cavity (444) inside the splash guard (7) after reversing through a main sand spraying channel (111) inside the sand spraying body (3) and through a side sand spraying hole (222) on the sand spraying body (3) and an outer sand spraying hole (333) on the diversion alloy sleeve (4), and then enters a stratum after passing through an annular space between the splash-proof protection sand spraying device and the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110032424.6A CN112360423A (en) | 2021-01-12 | 2021-01-12 | Anti-splash protection sand blasting device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110032424.6A CN112360423A (en) | 2021-01-12 | 2021-01-12 | Anti-splash protection sand blasting device and method |
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| Publication Number | Publication Date |
|---|---|
| CN112360423A true CN112360423A (en) | 2021-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110032424.6A Pending CN112360423A (en) | 2021-01-12 | 2021-01-12 | Anti-splash protection sand blasting device and method |
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| Country | Link |
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| CN (1) | CN112360423A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073964A (en) * | 2021-03-11 | 2021-07-06 | 东营市兆鑫工贸有限责任公司 | Large-displacement backflow sand blower |
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| CN203155407U (en) * | 2013-02-07 | 2013-08-28 | 成都佳美嘉科技有限公司 | Sandblaster |
| CN204609855U (en) * | 2015-05-08 | 2015-09-02 | 中国石油集团渤海钻探工程有限公司 | Sand blower of sliding sleeve |
| CN106761596A (en) * | 2016-12-02 | 2017-05-31 | 中国石油天然气股份有限公司 | A kind of casing protection sanding machine |
| CN206280059U (en) * | 2016-12-16 | 2017-06-27 | 华鼎鸿基石油工程技术(北京)有限公司 | Fluid erosion prevention exempts from sand card fracturing sliding bush |
| CN109184614A (en) * | 2018-09-10 | 2019-01-11 | 中国石油天然气股份有限公司 | Packer, fracturing technology tubing string |
| CN208777975U (en) * | 2018-07-27 | 2019-04-23 | 中石化石油工程技术服务有限公司 | A kind of frac-sand jet |
| CN211950462U (en) * | 2020-03-25 | 2020-11-17 | 盐城市鑫源石化机械有限公司 | Novel special sliding sleeve sand blower |
-
2021
- 2021-01-12 CN CN202110032424.6A patent/CN112360423A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203155407U (en) * | 2013-02-07 | 2013-08-28 | 成都佳美嘉科技有限公司 | Sandblaster |
| CN204609855U (en) * | 2015-05-08 | 2015-09-02 | 中国石油集团渤海钻探工程有限公司 | Sand blower of sliding sleeve |
| CN106761596A (en) * | 2016-12-02 | 2017-05-31 | 中国石油天然气股份有限公司 | A kind of casing protection sanding machine |
| CN206280059U (en) * | 2016-12-16 | 2017-06-27 | 华鼎鸿基石油工程技术(北京)有限公司 | Fluid erosion prevention exempts from sand card fracturing sliding bush |
| CN208777975U (en) * | 2018-07-27 | 2019-04-23 | 中石化石油工程技术服务有限公司 | A kind of frac-sand jet |
| CN109184614A (en) * | 2018-09-10 | 2019-01-11 | 中国石油天然气股份有限公司 | Packer, fracturing technology tubing string |
| CN211950462U (en) * | 2020-03-25 | 2020-11-17 | 盐城市鑫源石化机械有限公司 | Novel special sliding sleeve sand blower |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073964A (en) * | 2021-03-11 | 2021-07-06 | 东营市兆鑫工贸有限责任公司 | Large-displacement backflow sand blower |
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Application publication date: 20210212 |
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