CN113006746B - Erosion-preventing sand-blasting perforating tool - Google Patents
Erosion-preventing sand-blasting perforating tool Download PDFInfo
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- CN113006746B CN113006746B CN202110307228.5A CN202110307228A CN113006746B CN 113006746 B CN113006746 B CN 113006746B CN 202110307228 A CN202110307228 A CN 202110307228A CN 113006746 B CN113006746 B CN 113006746B
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- blasting
- liquid inlet
- perforating gun
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- 238000005488 sandblasting Methods 0.000 title claims abstract description 84
- 239000004576 sand Substances 0.000 claims abstract description 52
- 239000007788 liquid Substances 0.000 claims description 66
- 239000012530 fluid Substances 0.000 claims description 21
- 230000003628 erosive effect Effects 0.000 claims description 15
- 230000009471 action Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 63
- 238000000034 method Methods 0.000 abstract description 12
- 230000001681 protective effect Effects 0.000 abstract description 10
- 238000005299 abrasion Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 8
- 239000000203 mixture Substances 0.000 description 19
- 238000010276 construction Methods 0.000 description 7
- 238000005507 spraying Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 239000007921 spray Substances 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000005270 abrasive blasting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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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)
- Nozzles (AREA)
Abstract
The invention relates to an erosion-preventing sand-blasting perforation tool, which comprises: a housing, at least one mixing element, at least one sand-blast perforating gun, and a protective sheath. At least one mounting hole is formed in the side wall of the shell; the mixing parts are in one-to-one correspondence with the mounting holes, the mixing parts are cylindrical, one end of each mixing part is an inlet, the other end of each mixing part is an outlet, and at least one sand outlet groove is formed in the side wall of each mixing part along the circumferential direction; the sand blasting perforating gun is positioned in the shell and is used for pressurizing water into high-pressure water to be sprayed into the mixing component; the protection sleeve is located in the shell and sleeved on the outer side of the sand blasting perforating gun, a cavity is formed between the protection sleeve and the shell and used for containing sand, the sand contained in the cavity falls into the mixing component from the sand outlet groove, and the erosion-preventing sand blasting perforating tool can reduce abrasion of the xiao Sha water mixing process on the whole component and prolong the service life.
Description
Technical Field
The invention relates to the technical field of oil exploitation perforation, in particular to an erosion-preventing sand-blasting perforation tool.
Background
With the development of oil and gas fields and the continuous exhaustion of energy sources, unconventional oil and gas will become an important successor of petroleum and natural gas energy sources in the future. Unconventional oil and gas reservoirs all have the characteristics of thin, compact, low-pore and low-permeability reservoir and need large-scale and fine modification.
The hydraulic sand blasting perforation technology is different from the traditional technology for reforming the shaped perforation reservoir, has the advantages of simple process, lower cost and the like, has wide adaptability and is widely used in oil and gas field development.
The existing sand blasting perforating gun is used for perforating on the principle that: sand and water are mixed at the ground surface and then ejected from the perforator to reform the reservoir of the oil and gas field. For example, the sand blasting perforator with the patent application number of 201120022965.2 is characterized in that fracturing fluid base fluid is injected into an upper joint, the fracturing fluid base fluid is pressurized by secondary energy accumulation, and is sprayed outwards after being pressurized by the secondary energy accumulation of a reducing energy accumulation nozzle, so that the operation flow is simplified, the construction period is shortened, and the yield increasing effect is obvious, but the fracturing fluid effusion is particularly serious in internal abrasion condition and has low feasibility.
Disclosure of Invention
In view of the above, it is necessary to provide an erosion-preventing sand-blasting perforation tool to solve the problem of abrasion to the internal structure of the perforating tool caused by that the sand-water mixture ejected from the sand-blasting perforating tool is mixed on the ground and then ejected from the perforating tool.
The technical scheme of the invention provides an erosion-preventing sand-blasting perforating tool, which comprises the following components:
the shell is provided with at least one mounting hole on the side wall;
the mixing parts are in one-to-one correspondence with the mounting holes, one mixing part is nested and mounted at each mounting hole along the radial direction of the shell, the mixing parts are cylindrical, one end of each mixing part is an inlet, the other end of each mixing part is an outlet, and at least one sand outlet groove is formed in the side wall of each mixing part along the circumferential direction;
at least one sand-blasting perforating gun, wherein the sand-blasting perforating gun is positioned in the shell, each sand-blasting perforating gun corresponds to one mixing component, a liquid outlet of the sand-blasting perforating gun is communicated with an inlet of the mixing component in a sealing way, and the sand-blasting perforating gun is used for pressurizing fluid into high-pressure jet to be sprayed into the mixing component;
the protection sleeve is located in the shell, is sleeved on the outer side of the sand blasting perforating gun and is used for isolating the sand blasting perforating gun from the shell, a cavity is formed between the protection sleeve and the shell and is used for containing sand, the sand contained in the cavity enters the mixing component from the sand outlet groove and is mixed with fluid to form fracturing fluid, and the fracturing fluid is sprayed out from the outlet under the action of high-pressure jet.
Further, the mounting holes, the mixing component and the sand blasting gun each comprise a plurality of mounting holes which are arranged at equal angles along the circumferential direction of the housing; each mounting hole is correspondingly nested with one mixing component; the liquid outlet of each sand blasting perforating gun corresponds to one mixing component, and fluid is ejected into the corresponding mixing component.
Further, the mounting holes, the mixing parts and the sand blasting perforating gun all comprise four mounting holes which are arranged at equal angles along the circumferential direction of the shell, and each mounting hole is correspondingly nested with one mixing part; the liquid outlet of each sand blasting perforating gun corresponds to one mixing component, and fluid is ejected into the corresponding mixing component.
Further, the top of the housing is provided with connecting threads along the axial direction.
Further, the bottom of the housing is provided with connecting threads along the axial direction.
Further, the sand blasting perforating gun comprises a cylinder body, one end of the cylinder body is provided with a liquid outlet hole, the other end of the cylinder body is closed, a liquid inlet cavity and a sliding groove are formed in the cylinder body, the liquid inlet cavity is communicated with the sliding groove, and the sliding groove is communicated with the liquid outlet hole;
the liquid inlet cavity is internally provided with a piston rod, a spring and a fixing pin, the fixing pin is fixed at the bottom of one end of the liquid inlet cavity, one end of the spring is fixed on the fixing pin, the other end of the spring is fixedly connected with the piston rod, the liquid inlet cavity is divided into two parts by a piston on the piston rod, one side opposite to the spring is a liquid inlet chamber, a liquid inlet hole is formed in the side wall of a cylinder body corresponding to the liquid inlet chamber, the other end of the piston rod extends into the sliding groove and is connected with the valve core, the piston rod and the valve core slide along the sliding groove, the valve core is opposite to the liquid outlet hole, and a liquid inlet hole is formed in the side wall of the cylinder body close to one end of the liquid outlet hole.
Further, the diameter of the valve core is smaller than that of the sliding groove, a liquid inlet cavity is formed between the outer side wall of the valve core and the inner wall of the sliding groove, liquid inlet Kong Kaishe is formed on the side wall of the cylinder corresponding to the liquid inlet cavity, a channel is formed on the side wall of the cylinder, one end of the channel is communicated with the liquid inlet pipe, and the other end of the channel is communicated with the liquid inlet hole.
Further, the piston rod is hinged with the valve core.
Further, the liquid inlet pipes of the sand blasting perforating guns are communicated with each other, and the liquid inlet pipes of the sand blasting perforating guns are communicated with each other.
Further, the liquid outlet end of the mixing component is of a cone structure, the liquid inlet end is of a cylinder structure, the liquid outlet end is communicated with the liquid inlet end, and the diameter of the liquid outlet end is gradually reduced along the liquid outlet direction.
Compared with the prior art, the invention has the following technical effects:
the invention provides an erosion-preventing sand-blasting perforating tool, which isolates a sand-blasting perforating gun from sand through the design of a protective sleeve, so that the abrasion and erosion of the sand to the sand-blasting perforating gun are effectively avoided, and the service life of the sand-blasting perforating gun is prolonged.
The cavity formed between the protective sleeve and the shell is used for containing sand, the sand is ejected into the mixing component by the sand-blasting perforating gun, the sand enters the mixing component from a sand outlet groove on the side wall of the mixing component and is mixed with the high-pressure jet to form fracturing fluid, the fracturing fluid is ejected from an outlet of the mixing component under the action of the high-pressure jet, and the sand-blasting perforating gun can be mixed with the sand and eject the fracturing fluid while ejecting the high-pressure jet, so that synchronous sand mixing and ejection are realized, and damage of the sand mixing process to the whole sand-blasting perforating gun is avoided;
compared with the prior art, the sand-water mixing process is carried out underground, so that abrasion of the sand-water mixture to the inside of the perforator is effectively avoided, the method is suitable for various lithologic reservoirs, the construction progress is quickened, the construction efficiency is improved, and the method has high economic value.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an erosion resistant abrasive blasted perforating tool provided by the present invention;
FIG. 2 is a schematic view of an embodiment of the erosion resistant abrasive blasted perforating tool provided in FIG. 1 with the casing removed;
FIG. 3 is a schematic view of an embodiment of the multiple sand jet guns of FIG. 2 with the protective cover removed
FIG. 4 is a schematic cross-sectional view of FIG. 1;
FIG. 5 is a schematic cross-sectional view of a sand-blasted perforating gun;
reference numerals illustrate:
1-shell, 2-mixing part, 3-sand blasting perforating gun, 4-protective sleeve, 5-feed liquor pipe, 6-feed liquor pipe, 11-mounting hole, 21-outlet, 22-inlet, 23-sand outlet groove, 31-cylinder, 32-outlet, 33-feed liquor cavity, 34-sliding groove, 35-piston rod, 36-spring, 37-fixed pin, 38-valve core and 39-channel.
Detailed Description
Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and together with the description serve to explain the principles of the invention, and are not intended to limit the scope of the invention.
Referring to fig. 1 and 4, taking water-based mixing as an example, an embodiment of the present invention provides an erosion-preventing abrasive-blasting perforating tool, which comprises a casing 1, four mixing components 2 nested on the casing 1, a protective sleeve 4 sleeved in the casing 1, and four abrasive-blasting perforating guns 3 sleeved in the protective sleeve 4.
The housing 1 is preferably a steel housing. The housing 1 has a columnar structure, and the cross section of the housing 1 having the columnar structure may be circular or may be a cross-sectional shape as shown in fig. 4, which is not particularly limited.
As shown in fig. 4, four mounting holes 11 are formed in the side wall of the housing 1 at equal angles along the circumferential direction, and 90 degrees are formed between two adjacent mounting holes 11. Each mounting hole 11 is correspondingly nested and provided with a mixing part 2, and the mixing part 2 is used for mixing sand and water and spraying out. The mixing part 2 is of a cylindrical structure, one end of the cylindrical structure is an inlet 22, the other end of the cylindrical structure is an outlet 21, and at least one sand outlet groove 23 is formed in the side wall of the mixing part 2 along the circumferential direction.
The sand-blasting perforating guns 3 are positioned in the shell 1, each sand-blasting perforating gun 3 corresponds to one mixing component 2, a water outlet 32 of each sand-blasting perforating gun 3 is communicated with an inlet 22 of the mixing component 2 in a sealing mode, and the sand-blasting perforating guns 3 are used for pressurizing water into high-pressure water to be sprayed into the mixing component 2.
The protection sleeve 4 is located in the casing 1, and is sleeved on the outer side of the sand blasting perforating gun 3, and is used for isolating the sand blasting perforating gun 3 from the casing 1, a cavity 7 is formed between the protection sleeve 4 and the casing 1, sand is contained in the cavity 7, the sand contained in the cavity 7 enters the mixing component 2 from the sand outlet groove 23 and is mixed with water to form a sand-water mixture, and the sand-water mixture is sprayed out from the outlet 21 under the action of high-pressure water.
The protective sleeve 4 is used for isolating the sand-blasting perforating gun 3 from the shell 1, so that the sand contained in the cavity 7 can be effectively prevented from wearing and eroding the sand-blasting perforating gun 3 inside. The protective sleeve 4 can be made of wear-resistant rubber materials.
When in use, sand can be filled in the ground in advance for later sand-water mixing. Then the anti-erosion sand-blasting perforating tool is put into a well section to be fractured along a drill rod, then high-pressure liquid is injected into the perforating gun 3 from the water inlet pipe 5, water becomes high-pressure water after being pressurized by the sand-blasting perforating gun 3 and is sprayed to the mixing component 2, meanwhile sand in the cavity 7 falls into the cavity of the mixing component 2 from the sand outlet groove 23, the sand and the high-pressure water are mixed to form a sand-water mixture, and meanwhile the sand-water mixture is sprayed out from an outlet of the mixing component 2 under the action of the high-pressure water, so that reservoir improvement is realized. It should be noted that, under the impact of the high-speed water flow, the interior of the mixing component 2 is kept in near vacuum, so that the sand existing in the cavity 7 can be sucked into the mixing component 2 under pressure, and the sand above the mixing component can drop into the mixing component 2 under the action of gravity, then is mixed with the high-pressure water to form a sand-water mixture, and is sprayed out from the outlet of the mixing component 2 under the action of the high-pressure water.
Compared with the prior art, the sand-water mixing process is carried out underground, so that abrasion of the sand-water mixture to the inside of the perforator is effectively avoided, the method is suitable for various lithologic reservoirs, the construction progress is quickened, the construction efficiency is improved, and the method has high economic value. In addition, the invention avoids the sand being directly mixed with water and then sandblasted, but carries out sand mixing with the sand entering from the sand outlet groove 23 while high-pressure water is sprayed through the mixing component 2, thereby realizing synchronous sand mixing and spraying, and the process of sand mixing can reduce the abrasion to the rest components of the sandblasted perforator as much as possible. The four mixing parts 2 and the four sand blasting perforating guns can be arranged to realize simultaneous modification of reservoirs in four directions.
As a further embodiment, the mounting holes 11 on the housing 1 may be provided only in one, and the corresponding mixing element 2 and the sand-blasting gun 3 may be provided in one. The number of the mounting holes 11 may be two or more, the plurality of mounting holes 11 may be arranged along the circumferential array of the housing 1, and accordingly, the number of the mixing members 2 and the sand blasting perforating guns 3 may be plural, the plurality of sand blasting perforating guns 3 may be in one-to-one correspondence with the plurality of mixing members 2, and the plurality of mixing members 2 may be mounted in one-to-one correspondence with the plurality of mounting holes 11.
The sand-water mixture and the oil-based mixture can be used for spraying oil, and the oil and the sand can be mixed to form fracturing fluid.
In order to facilitate connection of the sand blasting perforator with a drill rod, an external thread 12 is arranged at the top of the sand blasting perforator along the axial direction, an internal thread is arranged on the drill rod, and the sand blasting perforator is in threaded connection with the drill rod through the external thread 12 and the internal thread. Of course, an internal thread may be provided on the top of the sand blasting gun, and an external thread may be provided on the drill rod.
Likewise, in order to facilitate the connection of the sand-blasting gun with the drill, the bottom of the sand-blasting gun is provided with threads 13 along the axial direction, and is screw-connected with the drill by the threads 13.
Further, the sand blasting perforator comprises a cylinder 31, wherein one end of the cylinder 31 is provided with a water outlet 32, the other end of the cylinder is closed, a liquid inlet cavity 33 and a sliding groove 34 are formed in the cylinder 31, the liquid inlet cavity 33 is communicated with the sliding groove 34, and the sliding groove 34 is communicated with the water outlet 32;
the liquid inlet cavity 33 is internally provided with a piston rod 35, a spring 36 and a fixing pin 37, the fixing pin 37 is fixed at the bottom of one end of the liquid inlet cavity 33, one end of the spring 36 is fixed on the fixing pin 37, the other end of the spring 36 is fixedly connected with the piston rod 35, the liquid inlet cavity 33 is divided into two parts by a piston on the piston rod 35, wherein a liquid inlet chamber is arranged on one side opposite to the spring 36, a liquid inlet hole is formed in the side wall of the cylinder body 31 corresponding to the liquid inlet chamber, the other end of the piston rod 35 extends into the sliding groove 34 and is hinged with the valve core 38, the piston rod 35 and the valve core 38 slide along the sliding groove 34, and the valve core 38 is opposite to the water outlet hole 32. The diameter of the valve core 38 is smaller than that of the sliding groove 34, a water inlet cavity is formed between the outer side wall of the valve core 38 and the inner wall of the sliding groove 34, a water inlet hole is formed in the side wall of the cylinder corresponding to the water inlet cavity, a channel 39 is formed in the side wall of the cylinder 31, and the water inlet cavity is communicated with the water inlet pipe 5 through the channel 39.
When the reservoir is not needed to be reformed by spraying the sand-water mixture, the spring 36 is in a natural telescopic state, the valve core 38 plugs the water outlet hole 32 under the acting force of the spring 36, and at this time, the mixing component 2 cannot mix and spray the sand-water. When the reservoir needs to be reformed, a liquid, such as oil or water, is introduced into the liquid inlet cavity 33 from the liquid inlet hole, the spring 36 is contracted under the action of the liquid to drive the piston rod 35 and the valve core 38 to retreat, at this time, the water outlet hole 32 is opened, and water enters the sliding groove 34 through the channel 39 and is sprayed out from the water outlet hole 32. The valve core 38 is used for forming high-speed jet flow by reducing the water flow area and increasing the water pressure, and spraying out after being mixed with sand in the mixing component 2 through the mixing component 2, so that an unexpected sand-water mixture is sprayed, and the reservoir is reformed.
The water inlet pipes 5 of the sand blasting perforating guns 3 are communicated with each other, and the liquid inlet pipes 6 of the sand blasting perforating guns are communicated with each other. Therefore, a plurality of sand-blasting perforators can simultaneously jet sand-water mixtures to realize the transformation of reservoirs in different directions, and the transformation efficiency is improved.
Further, in order to increase the pressure of the blasting, the outlet end of the mixing member 2 is provided with a cone structure, the inlet end is provided with a cylinder structure, the outlet end is communicated with the inlet end, and the diameter of the outlet end is gradually reduced along the water outlet direction.
The invention provides an erosion-preventing sand-blasting perforating tool, which isolates a sand-blasting perforating gun 3 from sand through the design of a protective sleeve, thereby effectively avoiding the abrasion and erosion of the sand to the sand-blasting perforating gun 3 and prolonging the service life of the sand-blasting perforating gun 3. The cavity 7 formed between the protective sleeve 4 and the shell 1 is used for containing sand, the sand blasting perforating gun 3 sprays high-pressure water into the mixing component, sand falls into the mixing component 2 from the sand outlet groove 23 on the side wall of the mixing component 2 and is mixed with the high-pressure water to form a sand-water mixture, then the sand-water mixture is sprayed out from the outlet of the mixing component 2 under the action of the high-pressure water, and the mixing component 2 can spray the high-pressure water and simultaneously spray and mix with the sand, so that the synchronous sand mixing and spraying are realized, the damage of the sand mixing process to the whole sand blasting perforating gun can be avoided, compared with the prior art, the sand-water mixing process is carried out underground, the abrasion of the sand-water mixture to the inside of the perforating gun is effectively avoided, the sand-water mixture is suitable for various lithologic reservoirs, the construction progress is accelerated, the construction efficiency is improved, and the economic value is higher.
The foregoing is only a preferred embodiment of the present invention, but the scope of the invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present invention should be included in the scope of the present invention.
Claims (10)
1. An erosion resistant abrasive blast perforation tool comprising:
the shell is provided with at least one mounting hole on the side wall;
the mixing parts are in one-to-one correspondence with the mounting holes, one mixing part is nested and mounted at each mounting hole along the radial direction of the shell, the mixing parts are cylindrical, one end of each mixing part is an inlet, the other end of each mixing part is an outlet, and at least one sand outlet groove is formed in the side wall of each mixing part along the circumferential direction;
at least one sand-blasting perforating gun, wherein the sand-blasting perforating gun is positioned in the shell, each sand-blasting perforating gun corresponds to one mixing component, a liquid outlet of the sand-blasting perforating gun is communicated with an inlet of the mixing component in a sealing way, and the sand-blasting perforating gun is used for pressurizing fluid into high-pressure jet to be sprayed into the mixing component;
the protection sleeve is located in the shell, is sleeved on the outer side of the sand blasting perforating gun and is used for isolating the sand blasting perforating gun from the shell, a cavity is formed between the protection sleeve and the shell and is used for containing sand, the sand contained in the cavity enters the mixing component from the sand outlet groove and is mixed with fluid to form fracturing fluid, and the fracturing fluid is sprayed out from the outlet under the action of high-pressure jet.
2. The erosion preventing sand blasting tool of claim 1, wherein the mounting hole, the mixing member, and the sand blasting gun each comprise a plurality of the mounting holes, the plurality of the mounting holes being arranged at equal angles along a circumferential direction of the housing; each mounting hole is correspondingly nested with one mixing component; the liquid outlet of each sand blasting perforating gun corresponds to one mixing component, and fluid is ejected into the corresponding mixing component.
3. The erosion preventing sand blasting tool according to claim 2, wherein the mounting holes, the mixing parts and the sand blasting gun each comprise four mounting holes which are arranged at equal angles along the circumferential direction of the casing, and each mounting hole is provided with one mixing part in a corresponding nesting manner; the liquid outlet of each sand blasting perforating gun corresponds to one mixing component, and fluid is ejected into the corresponding mixing component.
4. The erosion resistant blast perforating tool of claim 1, wherein the top of the housing is provided with connecting threads along an axial direction.
5. The erosion resistant blast perforating tool of claim 1, wherein the bottom of the housing is provided with connecting threads along an axial direction.
6. The erosion prevention sand blasting perforation tool according to claim 1, wherein the sand blasting perforation tool comprises a cylinder body, one end of the cylinder body is provided with a liquid outlet hole, the other end of the cylinder body is closed, a liquid inlet cavity and a sliding groove are formed in the cylinder body, the liquid inlet cavity is communicated with the sliding groove, and the sliding groove is communicated with the liquid outlet hole;
the sand blasting perforating gun is characterized in that a piston rod, a spring and a fixing pin are arranged in the liquid inlet cavity, the fixing pin is fixed at the bottom of one end of the liquid inlet cavity, one end of the spring is fixed on the fixing pin, the other end of the spring is fixedly connected with the piston rod, the liquid inlet cavity is divided into two parts by a piston on the piston rod, a liquid inlet chamber is arranged on one side opposite to the spring, a liquid inlet hole is formed in the side wall of a cylinder body corresponding to the liquid inlet chamber, the sand blasting perforating gun further comprises a valve core, the valve core and the piston rod slide along the sliding groove, the valve core is opposite to the liquid outlet hole, a liquid inlet hole is formed in the side wall of the cylinder body close to one end of the liquid outlet hole, and the other end of the piston rod extends into the sliding groove and is connected with the valve core.
7. The erosion prevention sand blasting perforation tool of claim 6, wherein the diameter of the valve core is smaller than the diameter of the sliding groove and larger than the diameter of the liquid outlet hole, a liquid inlet cavity is formed between the outer side wall of the valve core and the inner wall of the sliding groove, the liquid inlet Kong Kaishe is formed on the side wall of the cylinder corresponding to the liquid inlet cavity, a channel is formed on the side wall of the cylinder, one end of the channel is communicated with the liquid inlet pipe, and the other end of the channel is communicated with the liquid inlet hole.
8. The erosion resistant blast perforating tool of claim 6, wherein the piston rod is hingedly connected to the valve core.
9. The erosion resistant abrasive blast perforating tool of claim 1, wherein a plurality of said abrasive blast perforating guns are interconnected between the feed tubes of the abrasive blast perforating guns.
10. The erosion preventing sand blasting perforating tool as claimed in claim 1, wherein the outlet end of the mixing member is provided with a cone structure, the inlet end is provided with a cylinder structure, the outlet end is communicated with the inlet end, and the diameter of the outlet end is gradually reduced along the liquid outlet direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110307228.5A CN113006746B (en) | 2021-03-23 | 2021-03-23 | Erosion-preventing sand-blasting perforating tool |
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| CN202110307228.5A CN113006746B (en) | 2021-03-23 | 2021-03-23 | Erosion-preventing sand-blasting perforating tool |
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| CN113006746A CN113006746A (en) | 2021-06-22 |
| CN113006746B true CN113006746B (en) | 2023-06-13 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE4329568C2 (en) * | 1993-09-02 | 1997-04-17 | Kraus Hans Bernd | Device for conveying a dry, spreadable building material and method for using this device in earth building |
| CN2297538Y (en) * | 1997-05-20 | 1998-11-18 | 西安市通源科技产业有限责任公司 | Underground high pressure hydraulic perforator |
| AU2007101004A4 (en) * | 2007-10-15 | 2007-11-15 | Graham Nordsvan | Spray Nozzle Assembly |
| CN101619654B (en) * | 2009-07-27 | 2012-06-20 | 北方斯伦贝谢油田技术（西安）有限公司 | Pulse fracturing sand injector for horizontal wells |
| CN104863550B (en) * | 2014-02-26 | 2019-09-13 | 中海石油(中国)有限公司上海分公司 | Hydraulic jet perforation and APR testing combination operation technique |
| CN108672118A (en) * | 2018-06-04 | 2018-10-19 | 芜湖涛浪机械科技有限公司 | A kind of nozzle to spray mixture |
| CN110159240B (en) * | 2019-06-19 | 2020-09-22 | 中国地质大学（北京） | Coal bed gas exploitation fracturing equipment |
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| CN113006746A (en) | 2021-06-22 |
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