CN212272120U - Pipe dredging device - Google Patents

Abstract

The application discloses siphunculus device belongs to oil development technical field. The device comprises: the device comprises a rotary joint and a milling spray head, wherein the milling spray head comprises a spraying mechanism and a milling mechanism; the first end of the rotary joint is connected with the coiled tubing, the second end of the rotary joint is connected with the first end of the injection mechanism, the rotary joint is used for driving the injection mechanism to rotate, and fluid in the coiled tubing flows into an inner cavity of the injection mechanism through the rotary joint; a first through hole is formed in the side wall of the injection mechanism and communicated with an inner cavity of the injection mechanism; and the second end of the injection mechanism is connected with a milling mechanism, a second through hole is formed in the milling mechanism, and the second through hole is communicated with an inner cavity of the injection mechanism. Therefore, sand washing and pipe penetrating operation can be completed at one time, the construction period of the pipe penetrating operation is shortened, the pipe penetrating operation efficiency is improved, the labor intensity of technical personnel is reduced, and the pipe penetrating operation is safe and reliable.

Description

Pipe dredging device

Technical Field

The application relates to the technical field of oil exploitation, in particular to a pipe dredging device.

Background

With the acceleration of the development process of oil fields, most oil fields enter the middle and later development stages. The main production interval has long water injection time and high water injection strength, so that sand production is increasingly serious, and the oil pipe in the oil-gas well cannot be normally used due to sand blockage. Therefore, pipe-through operation is required to ensure normal use of the oil pipe.

At present, a pipe column is firstly put into an oil pipe, the pipe column is lifted out after the pipe column is detected to a sand blocking position, a sand washing pipe column connected with a pump truck is put into the sand blocking position, and sand washing is carried out by adopting a forward washing or backwashing process. And then, the sand washing pipe column is lifted out, and the pipe column is lowered into the oil pipe to detect the next sand blocking position. Repeating the steps until the oil pipe is dredged.

However, the above method requires repeated tripping and tripping of the pipe column and the sand washing pipe column, and thus has a long construction period and high labor intensity. In addition, the fluid injected into the sand washing pipe column by the pressure of the pump truck cannot effectively damage the sand blocking position of oil and sand mixture, so that the sand washing efficiency is low.

SUMMERY OF THE UTILITY MODEL

The application provides a siphunculus device can solve the lower problem of sand washing efficiency among the correlation technique. The technical scheme is as follows:

in a first aspect, an embodiment of the present application provides a pipe passing device, where the device includes: the device comprises a rotary joint and a milling spray head, wherein the milling spray head comprises a spraying mechanism and a milling mechanism;

the first end of the rotary joint is connected with the coiled tubing, the second end of the rotary joint is connected with the first end of the injection mechanism, the rotary joint is used for driving the injection mechanism to rotate, and fluid in the coiled tubing flows into an inner cavity of the injection mechanism through the rotary joint;

a first through hole is formed in the side wall of the injection mechanism and communicated with an inner cavity of the injection mechanism;

the second end of the injection mechanism is connected with the milling mechanism, a second through hole is formed in the milling mechanism, and the second through hole is communicated with an inner cavity of the injection mechanism.

Optionally, a first portion of the side wall of the injection mechanism is provided with a first set of first through holes, a second portion of the side wall of the injection mechanism is provided with a second set of first through holes, and the second portion of the side wall of the injection mechanism is located between the first portion of the side wall of the injection mechanism and the second end of the injection mechanism;

one aperture of each first through hole of the first set of first through holes on the outer wall of the injection mechanism is located between another aperture and the first end of the injection mechanism; one aperture of each first through hole of the second set of first through holes on the outer wall of the injection mechanism is located between the other aperture and the second end of the injection mechanism;

the axis of the second through hole is parallel to or coincident with the axis of the injection mechanism.

Optionally, the first group of first through holes comprises a plurality of first through holes, and the plurality of first through holes in the first group of first through holes are circumferentially and uniformly distributed on the side wall of the injection mechanism;

the second group of first through holes comprise a plurality of first through holes, and the plurality of first through holes in the second group of first through holes are circumferentially and uniformly distributed on the side wall of the spraying mechanism.

Optionally, the milling mechanism comprises a body, a milling block and a cutter block;

the body is connected with the second end of the injection mechanism, and the second through hole is formed in the body;

the end face of the body is connected with the cutter block, and the side face of the body is connected with the milling block.

Optionally, the width of the body gradually increases from one end connected to the second end of the injection mechanism to the other end.

Optionally, the material of the milling block is any one of tungsten alloy, a polycrystalline diamond compact and a cubic boron nitride compact;

the material of sword piece is tungsten alloy, polycrystalline diamond compact, cubic boron nitride compact in the arbitrary one of piece.

Optionally, the rotary joint comprises a housing, a blade, a rotary shaft, a first stationary stage and a second stationary stage;

the rotating shaft comprises a first hollow shaft, a solid shaft and a second hollow shaft, the solid shaft is connected between the first hollow shaft and the second hollow shaft, and the blades are connected to the side wall of the solid shaft;

the first fixed table is sleeved on the first hollow shaft, and the second fixed table is sleeved on the second hollow shaft; a third through hole is formed in the first hollow shaft in the radial direction at a position between the first fixed table and the solid shaft, and a fourth through hole is formed in the second hollow shaft in the radial direction at a position between the solid shaft and the second fixed table;

the first end face of the shell is connected with the coiled tubing, a fifth through hole is formed in the first end face of the shell, and a sixth through hole is formed in the second end face of the shell; the solid shaft is located within the housing; the first hollow shaft penetrates through the fifth through hole, and the first fixing table is located between the fifth through hole and the solid shaft; the second hollow shaft penetrates through the sixth through hole and then is connected with the first end of the injection mechanism, and the second fixing table is located between the solid shaft and the sixth through hole.

Optionally, the swivel further comprises a first bearing and a second bearing;

the first bearing is sleeved on the first hollow shaft and is positioned between the first end surface of the shell and the first fixed table;

the second bearing is sleeved on the second hollow shaft and is positioned between the second end face of the shell and the second fixing platform.

Optionally, the device further comprises a connector;

the second end of the rotary joint is connected with the first end of the injection mechanism through the connecting piece.

Optionally, the connector is an inner and outer joint.

The technical scheme provided by the application can at least bring the following beneficial effects:

because the milling shower nozzle can rotate under rotary joint's drive, and rotatory milling shower nozzle can mill the stifled position of sand, and the fluid that erupts in the first through-hole can wash the oil pipe wall when milling, the fluid that the second through-hole erupts can strike the destruction to the stifled position of sand, thereby can make sand washing and siphunculus operation once accomplish, and then not only shorten the construction cycle of siphunculus operation, the efficiency of siphunculus operation has been improved, technical staff's intensity of labour has still been alleviateed, the safe and reliable that makes the siphunculus operation become. And because the fluid jetted by the first through hole arranged on the side wall of the rotating jetting mechanism forms vortex in an annular space between the pipe wall of the oil pipe and the outer wall of the device, the flushing area of the pipe wall of the oil pipe can be increased, and the pipe wall of the oil pipe is ensured not to have residual sand grains and debris. In addition, because the fluid jetted from the second through hole arranged on the rotary milling mechanism can also form a vortex, the flow pressure of the fluid jetted from the second through hole can be increased, and the sand blocking position can be effectively damaged by impact.

Drawings

Fig. 1 is a schematic structural diagram of a first pipe passing device provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a milling nozzle provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a second duct device provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a third pipe passing device provided in the embodiment of the present application;

FIG. 5 is a schematic structural diagram of a fourth pipe passing device provided in the embodiment of the present application;

fig. 6 is a schematic structural diagram of a fifth kind of duct device provided in the embodiment of the present application.

Reference numerals:

1: a rotary joint; 11: a first end of a swivel; 12: a second end of the swivel; 2: grinding and milling the spray head; 3: an injection mechanism; 31: a first end of the injection mechanism; 32: a second end of the injection mechanism; 33: a first location in a sidewall of the jetting mechanism; 34: a second location in the sidewall of the jetting mechanism; 4: a milling mechanism; 41: a body; 42: grinding and milling the blocks; 43: a cutter block; 5: a first through hole; 6: a second through hole; 7: a housing; 71: a first end face of the housing; 72: a second end face of the housing; 8: a blade; 9: a rotating shaft; 91: a first hollow shaft; 92: a solid shaft; 93: a second hollow shaft; 10: a first fixed table; 13: a second stationary stage; 14: a first bearing; 15: a second bearing; 16: a connecting member; 17: an inner joint and an outer joint.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a duct device provided in an embodiment of the present application. Referring to fig. 1, the apparatus includes: the device comprises a rotary joint 1 and a milling spray head 2, wherein the milling spray head 2 comprises a spraying mechanism 3 and a milling mechanism 4; the first end 11 of the rotary joint is connected with the coiled tubing, the second end 12 of the rotary joint is connected with the first end 31 of the injection mechanism, the rotary joint 1 is used for driving the injection mechanism 3 to rotate, and fluid in the coiled tubing flows into an inner cavity of the injection mechanism 3 through the rotary joint 1; a first through hole 5 is formed in the side wall of the injection mechanism 3, and the first through hole 5 is communicated with an inner cavity of the injection mechanism 3; the second end 32 of the injection mechanism is connected with the milling mechanism 4, a second through hole 6 is arranged on the milling mechanism 4, and the second through hole 6 is communicated with the inner cavity of the injection mechanism 3.

It should be noted that the coiled tubing is the member used to connect the pump truck to the first end 11 of the swivel. The size and the material of the coiled tubing can be preset according to the use requirement, for example, the material of the coiled tubing can be stainless steel, alloy and the like.

The rotary joint 1 is a member capable of rotating 360 ° and conveying a fluid. The size and the type of the rotary joint 1 can be preset according to the use requirement. For example, the rotary joint 1 may be a high-speed rotary joint or a hydraulic rotary joint, which is not particularly limited in the embodiments of the present application.

And the milling spray head 2 is used for milling the sand blocking position and spraying fluid to wash the sand blocking position and the pipe wall of the oil pipe. The injection mechanism 3 is used for injecting fluid to wash the sand blocking position and the oil pipe wall, and the milling mechanism 4 is used for milling the sand blocking position. The size and material of the injection mechanism 3 can be preset according to the use requirement. For example, the material of the injection mechanism 3 may be stainless steel, an alloy, or the like. The size and the material of the milling mechanism 4 can be preset according to the use requirement. For example, the material of the milling mechanism 4 may be a metal or an alloy having a high hardness.

It should be noted that the connection between the first end 11 of the swivel and the coiled tubing may be preset according to the use requirement. For example, the first end 11 of the swivel may be provided in the form of a 1 "AMMT (American Mining Macaroni tube) button, and then an internal thread may be provided on the inner wall of the coiled Tubing to mate with the external thread of the AMMT button, after which the first end 11 of the swivel is threaded into the coiled Tubing.

Specifically, when using the device, the coiled tubing connected to the pump truck may be first connected to the first end 11 of the swivel and then the device may be lowered into the tubing. The fluid stored in the pump truck flows into the rotary joint 1 through the coiled tubing. Under the push of the high-pressure fluid, the rotary joint 1 can rotate, so that the injection mechanism 3 is driven to rotate, and the milling mechanism 4 is driven to rotate. At this time, the rotating milling mechanism 4 mills the sand-blocking position, thereby dredging the sand-blocking position. The fluid flowing into the rotary joint 1 also flows into the injection mechanism 3, wherein a part of the fluid is injected from the first through hole 5 to wash the wall of the oil pipe; another part of the fluid will be ejected from the second through holes 6 and impact damage will be done to the sand-blocking location.

Because the mill shower nozzle 2 can rotate under rotary joint 1's drive, and rotatory mill shower nozzle 2 can mill the stifled position of sand, and the fluid that erupts in the first through-hole 5 can wash the oil pipe wall when milling, the fluid that 6 erupts of second through-hole can strike the destruction to the stifled position of sand, thereby can make sand washing and siphunculus operation once accomplish, and then not only shorten the construction cycle of siphunculus operation, the efficiency of siphunculus operation has been improved, technical staff's intensity of labour has still been alleviateed, the safe and reliable that makes the siphunculus operation become. And because the fluid that the first through-hole 5 that sets up on the lateral wall of rotatory injection mechanism 3 erupted can form the vortex in the annular space between the outer wall of oil pipe wall and this device, so can increase the washing area of oil pipe wall to can guarantee not have remaining sand grain and piece on the oil pipe wall. In addition, because the fluid ejected from the second through hole 6 arranged on the rotary milling mechanism 4 also forms a vortex, the flow pressure of the fluid ejected from the second through hole 6 can be increased, and the sand blocking position can be effectively damaged by impact.

Alternatively, referring to fig. 1, a first location 33 in the sidewall of the ejector mechanism 3 is provided with a first set of first through holes 5, a second location 34 in the sidewall of the ejector mechanism 3 is provided with a second set of first through holes 5, the second location 34 in the sidewall of the ejector mechanism 3 is located between the first location 33 in the sidewall of the ejector mechanism 3 and the second end 32 of the ejector mechanism; one of each first through hole 5 of the first set of first through holes 5 on the outer wall of the injection mechanism 3 is located between the other and the first end 31 of the injection mechanism; one of each first through hole 5 of the second set of first through holes 5 on the outer wall of the injection mechanism 3 is located between the other and the second end 32 of the injection mechanism; the axis of the second through hole 6 is parallel to or coincides with the axis of the injection mechanism 3.

It should be noted that the diameters of the first through hole 5 and the second through hole 6 may be preset according to the use requirement, as long as the fluid in the injection mechanism 3 can be injected, and this embodiment of the present application does not specifically limit this.

In addition, each first through hole 5 of the first set of first through holes 5 has an inclination angle upward from the horizontal direction, i.e., each first through hole 5 of the first set of first through holes 5 is inclined upward. The inclination angle may be preset according to a use requirement, for example, the inclination angle may be 45 °, and the like, which is not particularly limited in the embodiment of the present application.

Furthermore, each first through hole 5 of the second set of first through holes 5 has an oblique angle downward from the horizontal direction, i.e. each first through hole 5 of the second set of first through holes 5 is obliquely downward. The inclination angle may be preset according to a use requirement, for example, the inclination angle may be 45 °, and the like, which is not particularly limited in the embodiment of the present application.

Finally, the axis of the second through hole 6 coincides with the flow direction of the fluid in the injection mechanism 3, i.e., the second through hole 6 is directed vertically downward.

In practical application, when the device is used, after the fluid enters the injection mechanism 3, a part of the fluid can be injected through the first group of first through holes 5 arranged at the first position 33 in the side wall of the injection mechanism 3, a part of the fluid can be injected through the second group of first through holes 5 arranged at the second position 34 in the side wall of the injection mechanism 3, and a part of the fluid can be injected through the second through holes 6 parallel to or coincident with the axis of the injection mechanism 3 in the milling mechanism 4. In this way, since the first set of first through holes 5 are all inclined upwards, the fluid ejected from the first set of first through holes 5 will form a swirling flow upwards, and the swirling flow upwards will carry the loose sand and debris formed after the sand milling and plugging position to rise in the annular space between the wall of the tubing pipe and the outer wall of the device, so as to discharge the loose sand and debris out of the tubing pipe. Because the second group of first through holes 5 are all inclined downwards, fluid ejected from the second group of first through holes 5 can downwards form a rotational flow, and the rotational flow can carry out all-directional washing on the wall of the oil pipe. Because the second through hole 6 is vertically downward, the flow pressure of the rotational flow formed by the fluid ejected by the second through hole 6 is larger, so that the rotational flow can effectively impact the sand blocking position, and the sand blocking position can be effectively damaged.

Optionally, referring to fig. 1, the first group of first through holes 5 includes a plurality of first through holes 5, and the plurality of first through holes 5 in the first group of first through holes 5 are circumferentially and uniformly distributed on the sidewall of the injection mechanism 3; the second group of first through holes 5 comprises a plurality of first through holes 5, and the plurality of first through holes 5 in the second group of first through holes 5 are circumferentially and uniformly distributed on the side wall of the injection mechanism 3.

The plurality of first through holes 5 are circumferentially and uniformly distributed on the side wall of the injection mechanism 3, which means that the number of central angles formed by the centers of every two adjacent first through holes 5 in the plurality of first through holes 5 and the center of the injection mechanism 3 is the same.

In addition, the number of the plurality of first through holes 5 included in the first group of first through holes 5 may be preset according to the use requirement. For example, the number of the plurality of first through holes 5 may be 3, and a central angle formed by the center of each two adjacent first through holes 5 in the 3 first through holes 5 and the center of the injection mechanism 3 is 120 °; the number of the first through holes 5 can also be 4, and at this time, the central angle formed by the centers of every two adjacent first through holes 5 in the 4 first through holes 5 and the center of the injection mechanism 3 is 90 degrees; the number of the plurality of first through holes 5 may also be 5, and in this case, a central angle formed by the center of each two adjacent first through holes 5 in the 5 first through holes 5 and the center of the injection mechanism 3 is 72 °, which is not specifically limited in the embodiment of the present application.

Furthermore, the number of the first through holes 5 included in the second group of first through holes 5 may be preset according to the use requirement. For example, the number of the plurality of first through holes 5 may be 3, and a central angle formed by the center of each two adjacent first through holes 5 in the 3 first through holes 5 and the center of the injection mechanism 3 is 120 °; the number of the first through holes 5 can also be 4, and at this time, the central angle formed by the centers of every two adjacent first through holes 5 in the 4 first through holes 5 and the center of the injection mechanism 3 is 90 degrees; the number of the plurality of first through holes 5 may also be 5, and in this case, a central angle formed by the center of each two adjacent first through holes 5 in the 5 first through holes 5 and the center of the injection mechanism 3 is 72 °, which is not specifically limited in the embodiment of the present application.

It is worth noting that, when the first group of first through holes 5 includes 3 first through holes 5, the 3 first through holes 5 are circumferentially and uniformly distributed on the side wall of the injection mechanism 3, and the second group of first through holes 5 includes 3 through holes, the 3 first through holes 5 are circumferentially and uniformly distributed on the side wall of the injection mechanism 3, it can be ensured that the flow pressure of the fluid ejected from the injection mechanism 3 is large, and at the same time, it can be ensured that the flow rate of the ejected fluid is large, the ejected fluid can not only wash the pipe wall of the oil pipe in an all-around manner, but also effectively adsorb loose sand grains and chips milled from the oil pipe, and the milled loose sand grains and chips are taken out of the oil pipe.

Optionally, referring to fig. 2, the milling mechanism 4 includes a body 41, a milling block 42 and a cutter block 43, and the body 41 is provided with a second through hole 6; the body 41 is connected to the second end 32 of the injection mechanism; the end face of the body 41 is connected with the cutter block 43, and the side face of the body 41 is connected with the milling block 42.

It should be noted that the size and shape of the body 41 can be preset according to the use requirement, for example, the width of the body 41 can be gradually reduced from one end connected with the second end 32 of the injection mechanism to the other end, that is, the whole body 41 is approximately conical. So, mill mechanism 4 when milling sand stifled position, mill mechanism 4's lifting surface area is less to make mill mechanism 4 receive resistance less when milling, and then can make this mill mechanism 4 can be more high-efficient when milling sand stifled position.

When the body 41 is connected to the second end 32 of the injection mechanism, the body 41 may be welded to the second end 32 of the injection mechanism, or the body 41 may be integrally formed with the second end 32 of the injection mechanism.

The milling block 42 is a member for milling a sand block position. The number and the material of the milling blocks 42 may be preset according to the use requirement, for example, the material of the milling blocks 42 may be any one of a tungsten alloy, a polycrystalline diamond compact, and a cubic boron nitride compact.

When the milling block 42 is connected to the side surface of the body 41, the milling block 42 may be welded to the side surface of the body 41, which is not specifically limited in the embodiment of the present application. Thus, the position of the sand block around the body 41 can be milled by the milling block 42.

The cutter block 43 is a member for milling a sand block position. The number and the material of the cutter blocks 43 may be preset according to the use requirement, for example, the material of the cutter blocks 43 may be any one of a tungsten alloy, a polycrystalline diamond compact, and a cubic boron nitride compact.

When the cutter block 43 is connected to the end surface of the body 41, the cutter block 43 may be welded to the end surface of the body 41, which is not specifically limited in the embodiment of the present application. In this way, the sand block position in front of the body 41 can be milled by the cutter block 43.

Specifically, when the milling mechanism 4 is used for milling the sand blocking position, the milling block 42 connected to the side surface of the body 41 and the cutter block 43 connected to the end surface of the body 41 are matched with each other to rotationally mill the sand blocking position. So, can bore into sand stifled position and mill through sword piece 43, can mill through milling piece 42 and bore into the stifled part of sand around the position to can be high-efficiently mill tight sand stifled layer and scaling layer into loose sand grain and piece, and then reach the effect of mediation sand stifled position.

Alternatively, referring to fig. 3, the rotary joint 1 includes a housing 7, a blade 8, a rotary shaft 9, a first stationary stage 10, and a second stationary stage 13; the rotating shaft 9 comprises a first hollow shaft 91, a solid shaft 92 and a second hollow shaft 93, the solid shaft 92 is connected between the first hollow shaft 91 and the second hollow shaft 93, and the blades 8 are connected on the side wall of the solid shaft 92; the first fixed table 10 is sleeved on the first hollow shaft 91, and the second fixed table 13 is sleeved on the second hollow shaft 93; a third through hole is formed in the first hollow shaft 91 at a position between the first fixed table 10 and the solid shaft 92 in the radial direction, and a fourth through hole is formed in the second hollow shaft 93 at a position between the solid shaft 92 and the second fixed table 13 in the radial direction; the first end face 71 of the shell 7 is connected with the coiled tubing, a fifth through hole is formed in the first end face 71 of the shell 7, and a sixth through hole is formed in the second end face 72 of the shell 7; a solid shaft 92 is located within the housing 7; the first hollow shaft 91 passes through the fifth through hole, and the first fixed stage 10 is located between the fifth through hole and the solid shaft 92; the second hollow shaft 93 is connected to the first end 31 of the injection mechanism after passing through the sixth through hole, and the second fixed table 13 is located between the solid shaft 92 and the sixth through hole.

The material and size of the housing 7 may be preset according to the use requirement, as long as the blades 8, the rotating shaft 9, the first fixed table 10, and the second fixed table 13 are all located in the housing 7, which is not specifically limited in the embodiment of the present application.

The blade 8 is a member for rotating the rotary shaft 9. The arrangement of the blades 8 can be preset according to the use requirement, for example, the channel formed between two adjacent first blades 8 can be a spiral channel.

Furthermore, the rotation shaft 9 can rotate and it can fix the blades 8 and bring the injection mechanism 3 into rotation. The size, material, and the like of the rotation shaft 9 may be set in advance according to the use requirement, and for example, the material of the rotation shaft 9 may be stainless steel, alloy, or the like.

Then, the first and second fixing tables 10 and 13 are members for restraining the rotation shaft 9 in the housing 7. The material and size of the first fixing table 10 and the second fixing table 13 can be set in advance according to the use requirement, for example, the diameter of the first fixing table 10 can be larger than the aperture of the fifth through hole, and the diameter of the second fixing table 13 can be larger than the aperture of the sixth through hole.

It is noted that two possible implementations of the first hollow shaft 91 through the fifth through hole are possible. In a first possible implementation manner, one end of the first hollow shaft 91 passes through the fifth through hole and is located in the continuous oil pipe. In a second possible implementation manner, one end of the first hollow shaft 91 passes through the fifth through hole and is located in the fifth through hole.

Specifically, when the fluid flows out of the coiled tubing, the fluid enters the first hollow shaft 91 and then flows out of the third through hole of the first hollow shaft 91. The fluid that flows out from the third through-hole can strike blade 8, and blade 8 can rotate under fluidic promotion to can drive rotation axis 9 and rotate, and then can drive injection mechanism 3 and rotate. The fluid in the housing 7 then flows through the fourth through-hole into the second hollow shaft 93 and then through the second hollow shaft 93 into the injection mechanism 3. Therefore, the rotary joint 1 can drive the injection mechanism 3 to rotate, and fluid in the coiled tubing can flow into the injection mechanism 3, so that the injection mechanism 3 can rotate and can inject the fluid, and the injected fluid can form rotational flow.

Optionally, referring to fig. 4, the rotary joint 1 further comprises a first bearing 14 and a second bearing 15; the first bearing 14 is sleeved on the first hollow shaft 91 and is positioned between the first end face 71 of the shell 7 and the first fixed table 10; the second bearing 15 is fitted over the second hollow shaft 93 and is located between the second end face 72 of the housing 7 and the second stationary platen 13.

The size and type of the first bearing 14 may be preset according to the use requirement, and for example, the first bearing 14 may be a thrust ball bearing, a thrust roller bearing, or the like. The inner diameter of the first bearing 14 may be slightly larger than the diameter of the first hollow shaft 91, for example, the inner diameter of the first bearing 14 may be 18 cm, etc., as long as it is ensured that the first hollow shaft 91 can pass through the through hole of the first bearing 14. And the outer diameter of the first bearing 14 may be slightly larger than the aperture of the fifth through hole, for example, the outer diameter of the first bearing 14 may be different from the aperture of the fifth through hole by 1cm (centimeter), 2cm, etc.

The size and type of the second bearing 15 may be predetermined according to the use requirement, and for example, the second bearing 15 may be a thrust ball bearing, a thrust roller bearing, or the like. The inner diameter of the second bearing 15 may be slightly larger than the diameter of the second hollow shaft 93, for example, the inner diameter of the second bearing 15 may be 18 cm, etc., as long as it is ensured that the second hollow shaft 93 can pass through the through hole of the second bearing 15. And the outer diameter of the second bearing 15 may be slightly larger than the aperture of the sixth through hole, for example, the outer diameter of the second bearing 15 may be different from the aperture of the sixth through hole by 1cm, 2cm, etc.

In this way, since the first hollow shaft 91 passes through the through hole of the first bearing 14 and the first bearing 14 is located between the first end face 71 of the housing 7 and the first fixing table 10, the position of the first hollow shaft 91 can be limited by the first bearing 14, so that the first hollow shaft 91 can be effectively prevented from shaking during rotation, the operation efficiency is improved, and the friction between the first hollow shaft 91 and the first bearing 14 is small during rotation. And because the second hollow shaft 93 passes through the through hole on the second bearing 15, and the second bearing 15 is located between the second end surface 72 of the housing 7 and the second fixing table 13, the position of the second hollow shaft 93 can be limited by the second bearing 15, so that the second hollow shaft 93 can be effectively prevented from shaking in the rotating process, the operating efficiency is improved, and the friction force between the second hollow shaft 93 and the second bearing 15 is small when the second hollow shaft 93 rotates.

Optionally, referring to fig. 5, the device further comprises a connector 16; the second end 12 of the swivel is connected to the first end 31 of the spraying mechanism by a connection 16.

The connection member 16 is a member for connecting the rotary joint 1 and the injection mechanism 3. The size and material of the connecting member 16 can be preset according to the use requirement, for example, the material of the connecting member can be stainless steel, alloy, etc.

Specifically, when the rotary joint 1 and the injection mechanism 3 are connected, one end of the connecting member 16 may be connected to the second end 12 of the rotary joint, and then the second end of the connecting member 16 may be connected to the first end 31 of the injection mechanism. Thus, the rotary joint 1 and the injection mechanism 3 can be connected through the connecting piece 16, and the injection mechanism 3 can be driven to rotate when the rotary joint 1 rotates.

It should be noted that the type of the connecting member 16 may be preset according to the use requirement. For example, referring to fig. 6, the connector 16 may be an inner and outer joint 17.

The inner and outer joint 17 is a joint having an internal thread at one end and an external thread at the other end. The inner and outer joints 17 may be of various types, for example, the inner and outer joints 17 may be a hydraulic pipe joint, a quick-change joint, a circular flange, or the like, and the embodiment of the present invention is not particularly limited thereto.

Specifically, when the rotary joint 1 and the injection mechanism 3 are connected, an external thread that matches an internal thread of one end of the inner and outer joint 17 may be provided on the second end 12 of the rotary joint, and then the second end 12 of the rotary joint may be connected to one end of the inner and outer joint 17. Then an internal thread matching with the external thread of the other end of the inner and outer joint 17 is provided on the first end 31 of the injection mechanism, and then the first end 31 of the injection mechanism is connected with the other end of the inner and outer joint 17. In this way, the rotary joint 1 and the injection mechanism 3 can be connected through the inner joint 17 and the outer joint 17, so that the rotary joint 1 can drive the injection mechanism 3 to rotate.

In this application embodiment, because the mill shower nozzle 2 can rotate under rotary joint 1's drive, and rotatory mill shower nozzle 2 can mill the stifled position of sand, and the fluid that erupts in first through-hole 5 when milling can wash the oil pipe wall, the fluid that second through-hole 6 erupts can strike the destruction to the stifled position of sand, thereby can make sand washing and siphunculus operation once accomplish, and then not only shorten the construction cycle of siphunculus operation, the efficiency of siphunculus operation has been improved, technical staff's intensity of labour has still been alleviateed, the safe and reliable that makes the siphunculus operation become. And because the fluid that the first through-hole 5 that sets up on the lateral wall of rotatory injection mechanism 3 erupted can form the vortex in the annular space between the outer wall of oil pipe wall and this device, so can increase the washing area of oil pipe wall to can guarantee not have remaining sand grain and piece on the oil pipe wall. In addition, because the fluid ejected from the second through hole 6 arranged on the rotary milling mechanism 4 also forms a vortex, the flow pressure of the fluid ejected from the second through hole 6 can be increased, and the sand blocking position can be effectively damaged by impact.

The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A pipe passing apparatus, characterized in that the apparatus comprises: the device comprises a rotary joint (1) and a milling spray head (2), wherein the milling spray head (2) comprises a spraying mechanism (3) and a milling mechanism (4);

the first end (11) of the rotary joint is connected with a coiled tubing, the second end (12) of the rotary joint is connected with the first end (31) of the injection mechanism, the rotary joint (1) is used for driving the injection mechanism (3) to rotate, and fluid in the coiled tubing flows into an inner cavity of the injection mechanism (3) through the rotary joint (1);

a first through hole (5) is formed in the side wall of the injection mechanism (3), and the first through hole (5) is communicated with an inner cavity of the injection mechanism (3);

and a second end (32) of the injection mechanism is connected with the milling mechanism (4), a second through hole (6) is formed in the milling mechanism (4), and the second through hole (6) is communicated with an inner cavity of the injection mechanism (3).

2. The device according to claim 1, characterized in that a first portion (33) in the side wall of the spraying means (3) is provided with a first set of first through holes (5), a second portion (34) in the side wall of the spraying means (3) is provided with a second set of first through holes (5), the second portion (34) in the side wall of the spraying means (3) being located between the first portion (33) in the side wall of the spraying means (3) and the second end (32) of the spraying means;

one aperture of each first through hole (5) of the first set of first through holes (5) on the outer wall of the injection mechanism (3) is located between the other aperture and the first end (31) of the injection mechanism; one aperture of each first through hole (5) of the second set of first through holes (5) on the outer wall of the injection mechanism (3) is located between the other aperture and the second end (32) of the injection mechanism;

the axis of the second through hole (6) is parallel to or coincident with the axis of the injection mechanism (3).

3. The device according to claim 2, characterized in that the first set of first through holes (5) comprises a plurality of first through holes (5), the plurality of first through holes (5) of the first set of first through holes (5) being circumferentially evenly distributed on the side wall of the injection means (3);

the second group of first through holes (5) comprise a plurality of first through holes (5), and the plurality of first through holes (5) in the second group of first through holes (5) are circumferentially and uniformly distributed on the side wall of the injection mechanism (3).

4. The device according to claim 1, characterized in that the milling mechanism (4) comprises a body (41), a milling block (42) and a cutter block (43);

the body (41) is connected with a second end (32) of the injection mechanism, and the second through hole (6) is formed in the body (41);

the end face of the body (41) is connected with the cutter block (43), and the side face of the body (41) is connected with the milling block (42).

5. The device according to claim 4, characterized in that the width of the body (41) increases from one end connected to the second end (32) of the spraying mechanism to the other.

6. The apparatus of claim 4 or 5, wherein the material of the milling block (42) is any one of tungsten alloy, polycrystalline diamond compact, cubic boron nitride compact;

the material of sword piece (43) is tungsten alloy, polycrystalline diamond compact, the arbitrary one in cubic boron nitride compact.

7. The device according to claim 1, characterized in that the rotary joint (1) comprises a housing (7), a blade (8), a rotary shaft (9), a first fixed table (10) and a second fixed table (13);

the rotating shaft (9) comprises a first hollow shaft (91), a solid shaft (92) and a second hollow shaft (93), the solid shaft (92) is connected between the first hollow shaft (91) and the second hollow shaft (93), and the blades (8) are connected on the side wall of the solid shaft (92);

the first fixing table (10) is sleeved on the first hollow shaft (91), and the second fixing table (13) is sleeved on the second hollow shaft (93); a third through hole is formed in the first hollow shaft (91) in the radial direction at a position between the first fixed table (10) and the solid shaft (92), and a fourth through hole is formed in the second hollow shaft (93) in the radial direction at a position between the solid shaft (92) and the second fixed table (13);

the first end face (71) of the shell (7) is connected with the coiled tubing, a fifth through hole is formed in the first end face (71) of the shell (7), and a sixth through hole is formed in the second end face (72) of the shell (7); the solid shaft (92) is located within the housing (7); the first hollow shaft (91) penetrates through the fifth through hole, and the first fixing table (10) is located between the fifth through hole and the solid shaft (92); the second hollow shaft (93) penetrates through the sixth through hole and then is connected with the first end (31) of the injection mechanism, and the second fixing table (13) is located between the solid shaft (92) and the sixth through hole.

8. The device according to claim 7, characterized in that the rotary joint (1) further comprises a first bearing (14) and a second bearing (15);

the first bearing (14) is sleeved on the first hollow shaft (91) and is positioned between the first end surface (71) of the shell (7) and the first fixed platform (10);

the second bearing (15) is sleeved on the second hollow shaft (93) and is located between the second end face (72) of the shell (7) and the second fixing table (13).

9. The device according to claim 1, characterized in that it further comprises a connecting piece (16);

the second end (12) of the rotary joint is connected with the first end (31) of the injection mechanism through the connecting piece (16).

10. A device according to claim 9, characterized in that the connecting piece (16) is an inner and an outer joint (17).

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