CN116265695A - T-shaped spray pipe water jet cutting blocking removal device and dredging blocking removal method - Google Patents
T-shaped spray pipe water jet cutting blocking removal device and dredging blocking removal method Download PDFInfo
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- CN116265695A CN116265695A CN202111544753.5A CN202111544753A CN116265695A CN 116265695 A CN116265695 A CN 116265695A CN 202111544753 A CN202111544753 A CN 202111544753A CN 116265695 A CN116265695 A CN 116265695A
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- spray
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/03—Freeing by flushing
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/002—Destroying the objects to be fished, e.g. by explosive means
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
Abstract
The invention belongs to the technical field of oil exploitation blocking remover, in particular to a T-shaped spray pipe water jet cutting blocking remover and a dredging blocking removing method, which aim to solve the problems of poor flushing and dredging effects and difficult cleaning of pipe wall sediments of a sand control screen pipe blocking remover in the prior art; at least one T-shaped spray pipe is arranged on the peripheral wall of the spray head; the T-shaped spray pipe comprises a main pipe and two branch pipes; one end of the main pipe is connected with the spray head in a conducting way, the two branch pipes are respectively connected with the end part of the main pipe, which is far away from the spray head, and the two branch pipes are arranged in a way of being opposite to each other along the same straight line; one end that shower nozzle was kept away from to the trunk pipe is equipped with first jet orifice, and the tip that two trunk pipes deviate from each other is equipped with the second jet orifice, and this application has more efficient desilting effect, especially to the advantage that pipe wall siltation thing can be more easily got rid of.
Description
Technical Field
The invention belongs to the technical field of oil exploitation blocking removal devices, and particularly relates to a T-shaped spray pipe water jet cutting blocking removal device and a dredging blocking removal method.
Background
In the process of petroleum exploitation, sand prevention is an indispensable link in the exploitation of sand-producing oil and gas reservoirs, and a sand prevention screen tube is the most commonly used oil well sand prevention method in the current oil field. After a period of oil well production, plugs such as fine sand, argillaceous, asphaltene and solid particles remained in the stratum produced liquid and the drilling fluid can block the screen pipe and an annular sand layer outside the screen pipe, so that the oil well is blocked, and the yield is seriously reduced.
The common sand control screen pipe blocking remover in the prior art generally adopts a rotatable spray head, the peripheral wall of the spray head is provided with spray holes, and when the spray head rotates at a high speed, the spray holes can spray water flow towards the inner wall of the screen pipe, so that the effects of flushing, dredging and blocking removal are realized. However, the anti-blocking device of the sand control screen in the prior art adopts a flushing mode from the outside to the inside to flush and dredge the wall of the screen, and the flushing mode has certain defects, for example, after flushing out the sludge with certain thickness, the flushing effect of water flow can be reduced, and the flushing water flow can squeeze the sludge to a certain degree, so that the sludge near the wall of the sand control screen can be attached to the wall of the screen more closely, and further the sand control screen is more difficult to clean deeply.
Disclosure of Invention
In order to solve the problems in the prior art, namely the problems that the flushing dredging effect is poor and the pipe wall sediment is difficult to clean in the sand control screen pipe blocking remover in the prior art. The application provides a T-shaped spray pipe water jet cutting blocking remover, which comprises a high-pressure jet pump, a packer, an underground filter, a righting device and a spray head, wherein the inside of the high-pressure jet pump, the packer, the underground filter, the righting device and the spray head are sequentially communicated;
wherein, the peripheral wall of the spray head is provided with at least one T-shaped spray pipe;
the T-shaped spray pipe comprises a main pipe and two branch pipes;
one end of the main pipe is connected with the spray head in a conducting way, two branch pipes are respectively connected with the end part of the main pipe far away from the spray head in a conducting way, and the two branch pipes are arranged in a back-to-back way along the same straight line;
the end of the main pipe, which is far away from the spray head, is provided with a first spray port, and the end of the two main pipes, which are far away from each other, is provided with a second spray port.
When dredging and unblocking the inner pipe wall of the sand control screen pipe, the T-shaped spray pipe water jet cutting and unblocking device is firstly plugged in the sand control screen pipe, then high-speed flowing unblocking liquid is pumped to a spray head through a high-pressure jet pump, the packer can separate the high-pressure jet pump from the spray head, an underground filter is used for preventing sediment from blocking the T-shaped spray pipe, the high-speed flowing unblocking liquid firstly jets and cuts the inner pipe wall of the sand control screen pipe into a strip-shaped gap through a first jet orifice of a main pipe in the T-shaped spray pipe, then the T-shaped spray pipe is reset and moved along the strip-shaped gap, and the second jet orifice of the main pipe in the T-shaped spray pipe is aligned with the bottom side wall of the strip-shaped gap to vertically jet and cut, so that the sediment attached to the pipe wall of the sand control screen pipe is cut in a certain thickness.
Compared with the existing anti-sand screen pipe blocking remover which is used for flushing and blocking removing through jet hole jet water flow, the T-shaped jet pipe water jet cutting blocking remover provided by the embodiment of the application can be used for cutting off the wall-attached sediment of the anti-sand screen pipe in a certain thickness in a mode similar to a water knife cutting mode, has a more efficient dredging effect, and can be removed more easily especially.
In some preferred embodiments, the T-shaped nozzle is further provided with an on-off valve;
the on-off valve is used for adjusting and changing the injection states of the first injection port and the second injection port.
The switch valve can be specifically set as an electromagnetic valve, and one switch valve can be respectively arranged in the main pipe and the branch pipe, so that the function of flexibly controlling and changing the injection states of the first injection port and the second injection port can be realized by controlling the opening and the closing of the electromagnetic valve.
In some preferred technical solutions, the T-shaped nozzle is provided with a cylindrical mounting cavity at the junction of the main pipe and the branch pipe;
the switch valve comprises a columnar valve core arranged in the columnar mounting cavity and a driving piece for driving the columnar valve core to rotate;
the driving piece can drive the columnar valve core to rotate in the columnar mounting cavity so as to change the conduction state of the main pipe and the branch pipe.
Like this through driving piece drive columnar case rotates in column installation cavity, can realize through a ooff valve alright regulation control trunk pipe and branch trunk pipe conduction state simultaneously, have can simplify T shape spray tube structure, save manufacturing cost's advantage.
In some preferred technical schemes, a T-shaped flow passage is formed in the columnar valve core;
the T-shaped flow channels can be respectively communicated with the flow channels in the main pipe and the two branch pipes correspondingly.
The concrete setting mode of the columnar valve core has the advantages of simple structure and convenience in regulating and controlling the conduction states of the main pipe and the two branch pipes.
In some preferred technical schemes, a driving device in transmission connection with the main pipe is also arranged in the spray head;
the driving device can drive the main pipe to rotate around the axis of the main pipe.
Therefore, the second jet openings of the two branch pipes can be flexibly adjusted by the driving device, so that the two branch pipes can rotate around the axis of the main pipe and jet simultaneously, and the cutting range of sediment attached to the pipe wall of the sand control screen pipe can be flexibly adjusted.
In some preferred embodiments, the first injection port is provided in a flare shape with a gradually increasing caliber along an outflow direction of the high-pressure water jet.
Therefore, when the sediments on the inner pipe wall of the sand control screen pipe are primarily sprayed and cut into the strip-shaped gaps through the first spraying opening, the width of the strip-shaped gaps can be larger, and the follow-up T-shaped spray pipe can be reset along the strip-shaped gaps more conveniently.
In some preferred embodiments, the second jet orifice is arranged in a constriction shape with a gradually decreasing caliber along the outflow direction of the high-pressure water jet.
Therefore, when the side wall of the strip-shaped gap is excavated and cut through the second jet orifice, the effective cutting lift of the second jet orifice can be further, so that the cutting efficiency of sediment can be improved.
In some preferred embodiments, the T-shaped nozzles are uniformly spaced along the peripheral wall of the spray head.
When the spray head is used for dredging and unblocking sediment on the inner pipe wall of the sand control screen pipe, the spray head only needs to rotate by a certain angle during lifting movement, even does not need to rotate, and the inner pipe wall of the sand control screen pipe can be cut and dredged circumferentially simultaneously by simultaneously spraying high-speed cutting water flow through a plurality of T-shaped spray pipes.
In some preferred technical schemes, the T-shaped spray pipe water jet cutting blocking remover also comprises a driving motor in transmission connection with the spray head;
the driving motor can drive the spray head to rotate around the axis of the spray head.
Therefore, when the spray head drives the T-shaped spray pipe to move up and down along the inner pipe wall of the sand control screen pipe, the actual movement track of the T-shaped spray pipe is spiral up and down, and the effective dredging cutting area of the second jet orifice of the branch pipe in the T-shaped spray pipe is spiral strip-shaped, so that the dredging efficiency of the T-shaped spray pipe water jet cutting and unblocking device can be higher.
The second aspect of the present application provides a dredging and blocking removing method for a sand control screen, which can be applied to the T-shaped nozzle water jet cutting and blocking removing device according to any one of the above technical schemes, and comprises the following steps:
driving the spray head to move along the inner pipe wall of the sand control screen pipe, and opening the main pipe in the T-shaped spray pipe to cut sediment on the inner pipe wall of the sand control screen pipe into strip-shaped gaps;
rotating the T-shaped spray pipe to enable the branch pipe in the T-shaped spray pipe to be perpendicular to the bottom side wall of the strip-shaped gap;
closing the main pipe, opening the branch pipe in the T-shaped spray pipe, and driving the spray head to reset along the inner pipe wall of the sand control screen pipe.
The method can be used for the T-shaped spray pipe water jet cutting blocking remover, and has the advantages of good flushing and dredging effects and easiness in cleaning off pipe wall sediments.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:
FIG. 1 is a schematic diagram of the overall structure of a T-shaped spray pipe water jet cutting and unblocking device according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a partial structure of a T-shaped nozzle water jet cutting unblocking device according to an embodiment of the present invention;
FIG. 3 is a front view of a T-nozzle water jet cutting unblocking device according to one embodiment of the present invention;
FIG. 4 is a cross-sectional view taken along the direction A-A in FIG. 3;
fig. 5 is a perspective view of a T-shaped nozzle in the T-shaped nozzle water jet cutting blocking remover according to the embodiment of the present application;
FIG. 6 is a cross-sectional view of the T-nozzle of FIG. 5 in a first state;
FIG. 7 is a cross-sectional view of the T-nozzle of FIG. 5 in a second state;
FIG. 8 is a flow chart of a dredging and unblocking method for a sand control screen provided in an embodiment of the present application.
List of reference numerals:
1-a high pressure jet pump; 2-a packer; 3-a downhole filter; 4-righting device; 5-spray heads, 51-T-shaped spray pipes, 511-main pipes, 511 a-first spray ports, 512-branch pipes, 512 a-second spray ports, 513-switching valves and 6-driving motors.
Detailed Description
In order to make the embodiments, technical solutions and advantages of the present invention more obvious, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the embodiments are some, but not all embodiments of the present invention. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
The invention relates to a T-shaped spray pipe water jet cutting blocking remover, which comprises a high-pressure jet pump, a packer, an underground filter, a righting device and a spray head, wherein the inside of the high-pressure jet pump is sequentially communicated with the inside of the packer;
wherein, the peripheral wall of the spray head is provided with at least one T-shaped spray pipe;
the T-shaped spray pipe comprises a main pipe and two branch pipes;
one end of the main pipe is connected with the spray head in a conducting way, two branch pipes are respectively connected with the end part of the main pipe far away from the spray head in a conducting way, and the two branch pipes are arranged in a back-to-back way along the same straight line;
the end of the main pipe, which is far away from the spray head, is provided with a first spray port, and the end of the two main pipes, which are far away from each other, is provided with a second spray port. The first ejection port and the second ejection port are disposed orthogonally.
In order to more clearly describe the T-shaped spray pipe water jet cutting blocking remover of the invention, a preferred embodiment of the invention is described in detail below with reference to the accompanying drawings.
As a preferred embodiment of the present invention, as shown in fig. 1 and 2, the embodiment of the present invention provides a T-shaped nozzle water jet cutting and unblocking device, which includes a high-pressure jet pump 1, a packer 2, a downhole filter 3, a centralizer 4 and a nozzle 5, which are sequentially communicated with each other; wherein, the peripheral wall of the spray head 5 is provided with at least one T-shaped spray pipe 51; the T-shaped spray pipe 51 comprises a main pipe 511 and two branch pipes 512; one end of the main pipe 511 is connected with the spray head 5 in a conducting way, two branch pipes 512 are respectively connected with the end part of the main pipe 511 far away from the spray head 5 in a conducting way, and the two branch pipes 512 are arranged in a back-to-back way along the same straight line; the end of the trunk tube 511 away from the nozzle 5 is provided with a first injection port 511a, and the end of the two trunk tubes 512 facing away from each other is provided with a second injection port 512a.
In addition, as shown in fig. 8, the application further provides a dredging and blocking removing method for a sand control screen, which can be applied to the T-shaped spray pipe water jet cutting and blocking removing device, and comprises the following steps:
the first step S1, driving a spray head 5 to move along the inner pipe wall of the sand control screen, and opening a main pipe 511 in a T-shaped spray pipe 51 to cut sediment on the inner pipe wall of the sand control screen into strip-shaped gaps;
a second step S2 of rotating the T-shaped spray pipe 51 to enable the branch pipe 512 in the T-shaped spray pipe 51 to be perpendicular to the bottom side wall of the strip-shaped gap;
and a third step S3, namely closing the main pipe 511, opening the branch pipe 512 in the T-shaped spray pipe 51, and driving the spray head 5 to reset along the inner pipe wall of the sand control screen.
The working process of the T-shaped spray pipe water jet cutting blocking remover and the dredging blocking removing method for the sand control screen pipe is further described in detail, when dredging blocking removing is needed to be carried out on the inner pipe wall of the sand control screen pipe, the T-shaped spray pipe water jet cutting blocking remover is firstly blocked in the sand control screen pipe, then high-pressure spray pump 1 pumps blocking removing liquid flowing at high speed to spray heads 5, packer 2 can separate high-pressure spray pump 1 from spray heads 5, downhole filter 3 is used for preventing sediment from blocking T-shaped spray pipe 51, the blocking removing liquid flowing at high speed firstly carries out primary spraying on the inner pipe wall of the sand control screen pipe through first spray ports 511a of main pipes 511 in the T-shaped spray pipe 51 to cut strip-shaped gaps, then the T-shaped spray pipe 51 is reset along the strip-shaped gaps, second spray ports 512a of branch pipes 512 in the T-shaped spray pipe 51 aim at the bottom side walls of the strip-shaped gaps, and accordingly the wall of the sand control screen pipe adhering to the sediment can be cut in a certain thickness.
Compared with the existing anti-sand screen pipe blocking remover which is used for flushing and blocking removing through jet hole jet water flow, the T-shaped jet pipe water jet cutting blocking remover provided by the embodiment of the application can be used for cutting off the wall-attached sediment of the anti-sand screen pipe in a certain thickness in a mode similar to a water knife cutting mode, has a more efficient dredging effect, and can be removed more easily especially.
Preferably, the righting device 4 of the present application comprises a plurality of righting ribs evenly distributed along the circumferential direction, and a gap is arranged between two adjacent righting ribs. In some preferred embodiments, the righting ribs are asymmetric deflection arch structures, and the arch parts of two adjacent asymmetric deflection arch structures are staggered. In other preferred embodiments, each centralizing rib is of a C-shaped structure with an opening direction facing the axial direction of the T-shaped spray pipe water jet cutting and blocking remover, and two ends of the C-shaped structure are fixed along the length direction of the T-shaped spray pipe water jet cutting and blocking remover.
In an alternative of this embodiment, the T-shaped spout 51 is also provided with an on-off valve 513; the on-off valve 513 is used to adjust and change the injection states of the first injection ports 511a, the second injection ports 512a.
Specifically, as shown in fig. 3 and 4, the switching valve 513 is provided in the T-shaped nozzle 51, the injection state of the first injection port 511a and the second injection port 512a is adjusted and changed by the switching valve 513, the switching valve 513 may be provided as a solenoid valve, and one of the trunk pipe 511 and the branch pipe 512 may be provided, respectively, so that the function of changing the injection state of the first injection port 511a and the second injection port 512a can be flexibly controlled by controlling the opening and closing of the solenoid valve.
In an alternative to this embodiment, the T-shaped nozzle 51 is provided with a cylindrical mounting cavity at the junction of the main pipe 511 and the branch pipe 512; the switch valve 513 comprises a columnar valve core arranged in the columnar mounting cavity and a driving piece for driving the columnar valve core to rotate; the driving member can drive the columnar valve core to rotate in the columnar installation cavity so as to change the conduction state of the main pipe 511 and the branch pipe 512.
Specifically, as shown in fig. 5, 6 and 7, a columnar mounting cavity is formed at the junction of the trunk pipe 511 and the branch pipe 512 of the T-shaped spray pipe 51, and a columnar valve core in the switch valve 513 is arranged in the columnar mounting cavity, so that the columnar valve core is driven to rotate in the columnar mounting cavity by a driving piece, and the conduction states of the trunk pipe 511 and the branch pipe 512 can be simultaneously regulated and controlled by one switch valve 513.
In an alternative scheme of the embodiment, a T-shaped flow passage is formed in the columnar valve core; the T-shaped flow channels can be respectively communicated with the flow channels in the main pipe 511 and the two branch pipes 512.
Specifically, as shown in fig. 5, 6 and 7, a T-shaped flow channel is formed in the columnar valve core, and the T-shaped flow channels are respectively and correspondingly conducted in the main pipe 511 and the flow channels in the two branch pipes 512, and in fig. 6, when the T-shaped spray pipe is in the first state, the main pipe 511 is not conducted, and the two branch pipes 512 are conducted; in fig. 7, when the T-shaped nozzle is in the second state, the main pipe 511 is conductive, and the two branch pipes 512 are non-conductive.
The specific arrangement mode of the columnar valve core has the advantages of simple structure and convenience in regulating and controlling the conduction states of the main pipe 511 and the two branch pipes 512.
In the alternative of this embodiment, the spray head 5 is further provided with a driving device in transmission connection with the main pipe 511; the driving device can drive the main pipe 511 to rotate around the axis of the main pipe.
The driving device which is in transmission connection with the main pipe 511 is arranged in the spray head 5, and the main pipe 511 is driven by the driving device to rotate around the axis of the main pipe 511, so that the direction of the second injection ports 512a of the two branch pipes 512 can be flexibly adjusted by the driving device, the two branch pipes 512 can rotate around the axis of the main pipe 511 and simultaneously inject, and the cutting range of sediment attached to the pipe wall of the sand control screen pipe can be flexibly adjusted.
In an alternative of the present embodiment, the first injection port 511a is provided in a flare shape with a gradually increasing caliber in the outflow direction of the high-pressure water jet.
The first injection port 511a of the main pipe 511 is arranged into a flaring shape with a gradually increased caliber along the outflow direction of the high-pressure water jet, so that when the first injection port 511a is used for primarily injecting and cutting the sediment on the inner pipe wall of the sand control screen pipe, the width of the strip-shaped gap can be larger, and the subsequent reset movement of the T-shaped spray pipe 51 along the strip-shaped gap is more convenient.
In an alternative of the present embodiment, the second injection port 512a is provided in a reduced-diameter shape with a gradually reduced diameter in the outflow direction of the high-pressure water jet.
The second injection port 512a of the branch pipe 511 is provided in a reduced-diameter shape with a gradually reduced diameter in the outflow direction of the high-pressure water jet, so that when the side wall of the strip-shaped slit is cut by digging through the second injection port 512a, the effective cutting lift of the second injection port 512a can be further increased, thereby improving the cutting efficiency of the sludge.
In an alternative to this embodiment, a plurality of T-shaped nozzles 51 are provided at even intervals along the peripheral wall of the spray head 5.
Specifically, as shown in fig. 4, the 6T-shaped nozzles 51 are uniformly arranged at intervals along the peripheral wall of the nozzle 5, so that when the nozzle 5 performs dredging and unblocking on the sediment on the inner wall of the sand control screen, the nozzle 5 only needs to rotate a certain angle during lifting movement, even does not need to rotate, and the inner wall of the sand control screen can be cut and dredged circumferentially simultaneously by simultaneously spraying high-speed cutting water flow through the 6T-shaped nozzles 51.
In the alternative scheme of the embodiment, the T-shaped spray pipe water jet cutting blocking remover also comprises a driving motor 6 in transmission connection with the spray head 5; the driving motor 6 can drive the spray head 5 to rotate around the axis of the spray head.
Specifically, as shown in fig. 2, the driving motor 6 drives the spray head 5 to rotate around its own axis, so that when the spray head 5 drives the T-shaped spray pipe 51 to move up and down along the inner pipe wall of the sand control screen, the actual movement track of the T-shaped spray pipe 51 is spiral up and down, and the effective dredging cutting area of the second injection port 512a of the branch pipe 511 in the T-shaped spray pipe is spiral band-shaped, so that the dredging efficiency of the T-shaped spray pipe water jet cutting and unblocking device can be higher.
It should be noted that, in the description of the present invention, terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus/means that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus/means.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
Claims (10)
1. The T-shaped spray pipe water jet cutting blocking remover is characterized by comprising a high-pressure jet pump, a packer, an underground filter, a righting device and a spray head which are sequentially communicated;
wherein, the peripheral wall of the spray head is provided with at least one T-shaped spray pipe;
the T-shaped spray pipe comprises a main pipe and two branch pipes;
one end of the main pipe is connected with the spray head in a conducting way, two branch pipes are respectively connected with the end part of the main pipe far away from the spray head in a conducting way, and the two branch pipes are arranged in a back-to-back way along the same straight line;
the end of the main pipe, which is far away from the spray head, is provided with a first spray port, and the end of the two main pipes, which are far away from each other, is provided with a second spray port.
2. The T-nozzle water jet cutting unblocking apparatus according to claim 1, wherein the T-nozzle is further provided with a switching valve;
the on-off valve is used for adjusting and changing the injection states of the first injection port and the second injection port.
3. The T-nozzle water jet cutting unblocking apparatus according to claim 1, wherein the T-nozzle is provided with a columnar mounting cavity at the intersection of the main pipe and the branch pipe;
the switch valve comprises a columnar valve core arranged in the columnar mounting cavity and a driving piece for driving the columnar valve core to rotate;
the driving piece can drive the columnar valve core to rotate in the columnar mounting cavity so as to change the conduction state of the main pipe and the branch pipe.
4. The T-shaped spray pipe water jet cutting and unblocking device according to claim 1, wherein a T-shaped flow passage is formed in the columnar valve core;
the T-shaped flow channels can be respectively communicated with the flow channels in the main pipe and the two branch pipes correspondingly.
5. The T-nozzle water jet cutting unblocking device according to claim 1, wherein a driving device in transmission connection with the main pipe is further arranged in the nozzle;
the driving device can drive the main pipe to rotate around the axis of the main pipe.
6. The T-nozzle water jet cutting unblocking apparatus according to claim 1, wherein the first jet port is provided in a flare shape having a gradually increasing caliber in an outflow direction of the high-pressure water jet.
7. The T-nozzle water jet cutting unblocking apparatus according to claim 1, wherein the second jet port is provided in a constriction shape having a gradually decreasing caliber in an outflow direction of the high-pressure water jet.
8. The T-nozzle water jet cutting unblocking apparatus of claim 1, wherein the T-nozzle is uniformly spaced along the peripheral wall of the nozzle.
9. The T-nozzle water jet cutting unblocking device according to claim 1, further comprising a drive motor drivingly connected to the spray head;
the driving motor can drive the spray head to rotate around the axis of the spray head.
10. A dredging and unblocking method for a sand control screen, which is applicable to the T-shaped nozzle water jet cutting and unblocking device as claimed in any one of claims 1 to 9, and comprises the following steps:
driving the spray head to move along the inner pipe wall of the sand control screen pipe, and opening the main pipe in the T-shaped spray pipe to cut sediment on the inner pipe wall of the sand control screen pipe into strip-shaped gaps;
rotating the T-shaped spray pipe to enable the branch pipe in the T-shaped spray pipe to be perpendicular to the bottom side wall of the strip-shaped gap;
closing the main pipe, opening the branch pipe in the T-shaped spray pipe, and driving the spray head to reset along the inner pipe wall of the sand control screen pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111544753.5A CN116265695A (en) | 2021-12-16 | 2021-12-16 | T-shaped spray pipe water jet cutting blocking removal device and dredging blocking removal method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111544753.5A CN116265695A (en) | 2021-12-16 | 2021-12-16 | T-shaped spray pipe water jet cutting blocking removal device and dredging blocking removal method |
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| CN116265695A true CN116265695A (en) | 2023-06-20 |
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| CN202111544753.5A Pending CN116265695A (en) | 2021-12-16 | 2021-12-16 | T-shaped spray pipe water jet cutting blocking removal device and dredging blocking removal method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117381883A (en) * | 2023-12-12 | 2024-01-12 | 山东景钰化学有限公司 | Cutting device for preparing natural carboxylate of blocking remover |
-
2021
- 2021-12-16 CN CN202111544753.5A patent/CN116265695A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117381883A (en) * | 2023-12-12 | 2024-01-12 | 山东景钰化学有限公司 | Cutting device for preparing natural carboxylate of blocking remover |
| CN117381883B (en) * | 2023-12-12 | 2024-02-09 | 山东景钰化学有限公司 | Cutting device for preparing natural carboxylate of blocking remover |
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