CN218938268U

CN218938268U - Underground rock debris bed sand removal simulation test device

Info

Publication number: CN218938268U
Application number: CN202222788342.7U
Authority: CN
Inventors: 陈小元; 王委; 于瑞; 刘亚
Original assignee: Sinopec Oilfield Service Corp; Sinopec East China Petroleum Engineering Corp
Current assignee: Sinopec Oilfield Service Corp; Sinopec East China Petroleum Engineering Corp
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-04-28
Anticipated expiration: 2032-10-21

Abstract

The utility model discloses a simulation test device for sand removal of an underground rock debris bed, which is characterized in that an upper platform is fixed at the top of a simulation derrick, a wellhead platform is fixed at the middle part of the simulation derrick, an arc-shaped shaft and a horizontal shaft are fixed below the wellhead platform, a drill rod is arranged in the simulation shaft, the lower end of the drill rod is connected with a rock debris bed breaker, the upper end of the drill rod is connected with a rotating central tube, the upper end of the rotating central tube is driven by a rotating motor, the upper end of the rotating motor is suspended at the lower end of an output rod of a linear electric cylinder, and the linear electric cylinder is fixed on the upper platform; the middle section periphery cover of rotatory center tube is equipped with the feed liquor seal cover, is equipped with radial through-hole on the rotatory center tube and communicates with each other with the inner chamber of feed liquor seal cover, and the feed liquor interface of feed liquor seal cover outer wall links to each other with the export of slush pump through high-pressure hose, and the slush pump entry links to each other with the bottom export of drilling fluid storage tank, and the upper portion lateral wall of arc pit shaft links to each other with the drilling fluid storage tank through the well head overflow pipe. The device can test and observe the deposit condition of the rock debris bed at the inclined section of the well and the rock debris damage effect.

Description

Underground rock debris bed sand removal simulation test device

Technical Field

The utility model relates to an underground work simulation device, in particular to an underground detritus bed sand removal simulation test device, and belongs to the technical field of petroleum drilling.

Background

When the well inclination angle exceeds 35 degrees, rock fragments sink to the lower well wall under the action of dead weight to form a friction cushion layer, and in the well section with the high inclination, a considerable part of drilling tools lie at the bottom of the well, so that the problems of abnormal increase of torque, directional bearing pressure, increase of annular pressure consumption and the like caused by friction generated by contact of the cushion layer and the drilling tools are solved, and the load of ground equipment and the underground risk are increased.

Aiming at the difficult problem of cleaning the well bore, a large number of well bore cleaning tools (commonly called as rock debris bed disrupters) are researched at home and abroad, and a certain effect is achieved. However, no ideal experimental equipment is used for carrying out simulation experimental observation to obtain visual impression and quantized data, such as: corresponding to a certain well diameter and displacement, a rock debris bed is formed at a well inclination angle; how long to drill the thickness of the formed rock debris bed; the influence of drilling fluids with different properties on formation of a rock debris bed, the working process of a rock debris bed breaker under the well, the cleaning effect and the like. At present, the simulation device can only simulate the process that the horizontal shaft sinks to form a cuttings bed under the corresponding drilling fluid flow, does not simulate the working process and the effect of the cuttings bed breaker in the well, and the working condition is not consistent with the reality.

Disclosure of Invention

The utility model aims to overcome the problems in the prior art, and provides a downhole cuttings bed sand removal simulation test device which can simulate the condition that cuttings are drilled to generate cuttings beds in a well and the actual use effect of a cuttings bed damage tool, and can observe the cuttings bed deposition condition and cuttings damage effect of different well inclined sections.

In order to solve the technical problems, the underground rock debris bed sand removal simulation test device comprises a simulation derrick, wherein an upper platform is fixed at the top of the simulation derrick, a wellhead platform is fixed at the middle of the simulation derrick, a simulation shaft is fixed below the wellhead platform, the simulation shaft comprises an arc shaft and a horizontal shaft connected to the lower end of the arc shaft, a drill rod is arranged in the simulation shaft, the lower end of the drill rod is connected with a rock debris bed breaker, the upper end of the drill rod is connected with a rotary central pipe, the upper end of the rotary central pipe is driven by a rotary motor, the upper end of the rotary motor is suspended at the lower end of an output rod of a linear electric cylinder, and the linear electric cylinder is fixed on the upper platform; the middle section periphery cover of rotatory center tube is equipped with the feed liquor seal cover, is equipped with radial through-hole on the rotatory center tube and communicates with each other with the inner chamber of feed liquor seal cover, the feed liquor interface of feed liquor seal cover outer wall links to each other with the export of slush pump through high-pressure hose, the entry of slush pump links to each other with the bottom export of drilling fluid storage tank, the upper portion lateral wall of arc pit shaft links to each other with the drilling fluid storage tank through the well head overflow pipe.

As an improvement of the utility model, the upper end and the lower end of the liquid inlet sealing sleeve are sealed with the periphery of the rotary central tube through sealing rings.

As a further improvement of the utility model, the wellhead overflow pipe is located below the wellhead platform.

As a further improvement of the utility model, the lower end of the rock debris bed breaker is connected with a drill bit, and a rock core is arranged in the simulated shaft.

As a further improvement of the utility model, the two sides of the rotating motor are respectively supported on corresponding vertical guide rails through sliding blocks, and the vertical guide rails are respectively fixed between the upper platform and the wellhead platform.

As a further improvement of the utility model, the rock debris bed breaker comprises a breaker upper joint, a sand removal rotor and a breaker lower joint, wherein an upper joint center hole is arranged along the axis of the breaker upper joint, an upper joint center shaft connected with the upper joint center hole into a whole is arranged in the lower port of the upper joint center hole, and the lower end of the upper joint center shaft is screwed in an inner screw hole of the breaker lower joint; the sand removal rotor comprises a coaxial rotor inner cylinder and a rotor outer cylinder, a rotor flow passage is formed between the outer wall of the rotor inner cylinder and the inner wall of the rotor outer cylinder, a plurality of spiral guide strips are uniformly arranged in the rotor flow passage, the rotor inner cylinder is sleeved on the periphery of the upper joint central shaft, and a plurality of outer cylinder ribs extending along the axial direction are uniformly arranged on the outer wall of the rotor outer cylinder; the circumference of the upper joint center hole is uniformly provided with a plurality of upper joint diversion holes which are communicated with the upper port of the rotor flow channel, and the circumference of the lower joint center hole is uniformly provided with a plurality of lower joint diversion holes which are communicated with the lower port of the rotor flow channel.

As a further improvement of the utility model, the length of the rotor outer cylinder is longer than that of the rotor inner cylinder, the upper end of the rotor outer cylinder is sleeved on the periphery of the lower end of the upper connector of the breaker, and the lower end of the rotor outer cylinder is sleeved on the periphery of the upper end of the lower connector of the breaker.

As a further improvement of the utility model, the outer wall of the upper joint of the breaker is uniformly provided with a plurality of upper joint spiral grooves, the outer wall of the lower joint of the breaker is uniformly provided with a plurality of lower joint spiral grooves, and the rotation directions of the upper joint spiral grooves and the lower joint spiral grooves are the same.

As a further improvement of the utility model, the simulated shaft is an organic glass cylinder body surrounded by two halves, and all the sections are sequentially connected through flanges and bolts.

Compared with the prior art, the utility model has the following beneficial effects: the formation of the underground cuttings bed and the destroyed process thereof can be reproduced on the ground, the flow field conditions similar to those of the underground site are provided, and the ground equipment is simplified. For the large well inclination angle, a stable rock debris bed is easy to form, and the relation between the drilling time and the thickness of the rock debris bed is easy to form; the drilling fluids with different performances have influence on the formation of the rock debris bed, and the sand cleaning effect of the rock debris bed sand cleaner under the well, the working process and the like are subjected to multi-dimensional research simulation.

Drawings

The utility model will now be described in further detail with reference to the drawings and the detailed description, which are provided for reference and illustration only and are not intended to limit the utility model.

FIG. 1 is a schematic diagram of a device for simulating sand removal of an underground cuttings bed according to the present utility model;

FIG. 2 is a front view of the cuttings bed breaker of the present utility model;

FIG. 3 is a cross-sectional view of the cuttings bed breaker;

FIG. 4 is a perspective view of the cuttings bed breaker of the present utility model;

fig. 5 is a perspective exploded view of the cuttings bed breaker of the present utility model.

In the figure: 1. simulating a derrick; 1a, an upper platform; 1b, a wellhead platform; 1c, vertical guide rails; 2a, an arc shaft; 2b, a horizontal shaft; 3. a linear electric cylinder; 3a, lifting a driving rod; 4. a rotating electric machine; 4a, rotating a driving shaft; 4b, sliding blocks; 5. rotating the central tube; 6. a drill rod; 7. a cuttings bed breaker; 7a, a breaker upper joint; 7a1. An upper joint center hole; 7a2. Upper joint center shaft; 7a3, an upper joint diversion hole; 7a4, an upper joint spiral groove; 7b, a sand removal rotor; 7b1, a rotor outer cylinder; 7b2, outer cylinder convex edges; 7b3, spiral guide strips; 7b4, a rotor inner cylinder; 7c, a breaker lower joint; 7c1, a lower joint converging hole; 7c2, a lower joint spiral groove; 8. a drilling fluid storage tank; 9. a slurry pump; 10. a high pressure hose; 11. a liquid inlet sealing sleeve; 12. a wellhead overflow pipe; 13. an electric cabinet.

Detailed Description

In the following description of the present utility model, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present utility model and simplifying the description, and do not mean that the device must have a specific orientation.

The utility model is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the utility model easy to understand.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

As shown in fig. 1, the underground cuttings bed sand removal simulation test device comprises a simulation derrick 1, a simulation shaft, a linear electric cylinder 3, a rotary motor 4, a rotary central pipe 5, a drill pipe 6, a cuttings bed breaker 7, a drilling fluid storage tank 8, a slurry pump 9, a high-pressure hose 10, a feed-in sealing sleeve 11, a wellhead overflow pipe 12 and an electric cabinet 13. In addition, drilling fluids of different properties meeting the required test requirements are formulated in the drilling fluid storage tank 8.

An upper platform 1a is fixed on the top of the simulation derrick 1, and a linear electric cylinder 3 is fixed on the upper platform 1a and is used for pressurizing and controlling a rotary motor 4 to move up and down. The middle part of simulation derrick 1 is fixed with well head platform 1b, is equipped with vertical guide rail 1c between upper platform 1a and the well head platform 1b, and the both sides of rotating electrical machines 4 are supported on vertical guide rail 1c through slider 4b respectively, when guaranteeing that rotating electrical machines 4 do elevating movement by vertical guide rail 1c, can not take place the slope. The vertical guide rail 1c may be a channel steel, and channel steel openings on two sides face each other.

A simulated wellbore is fixed below the wellhead platform 1b. The simulated shaft comprises an arc-shaped shaft 2a and a horizontal shaft 2b connected to the lower end of the arc-shaped shaft 2a according to the field reality, the simulated straight shaft section and the inclined shaft section can be transited to the horizontal shaft section after being assembled, the shaft is divided into two halves and made of organic glass, bolts are used for integration, and after the experiment is finished, a rock debris bed and the situation after the rock debris bed is damaged can be intuitively observed.

The drill rod 6 is arranged in the simulated well bore, and the drilling tool assembly can also comprise a drill collar, a power drill and a drill bit according to the experimental requirements. The lower extreme of drilling rod 6 is connected with detritus bed breaker 7, and the upper end of drilling rod 6 links to each other with rotatory center tube 5, and the upper end of rotatory center tube 5 is driven by rotating electrical machines 4, and the upper end of rotating electrical machines 4 hangs in the lift actuating lever 3a lower extreme of sharp electric jar 3, drives the drilling tool rotation, both can pressurize the drill bit under the rotatory actuating shaft 4a control of sharp electric jar 3, can promote again and drop the drilling tool.

The middle section periphery cover of rotatory center tube 5 is equipped with feed liquor seal cover 11, and rotatory center tube 5 and feed liquor seal cover 11 coaxial line exist annular space between the outer wall of rotatory center tube 5 and the inner wall of feed liquor seal cover 11, and this annular space is used for the feed liquor, and the upper and lower both ends of feed liquor seal cover 11 pass through the sealing washer and realize sealedly with the periphery of rotatory center tube 5, and rotatory center tube 5 can rotate in feed liquor seal cover 11. The liquid inlet sealing sleeve 11 can be formed by connecting two symmetrical halves, and is convenient to assemble and disassemble. The lower end of the liquid inlet sealing sleeve 11 is abutted against the elastic retainer ring, and the inner edge of the elastic retainer ring is embedded into the groove on the outer wall of the rotary central tube 5, so that the liquid inlet sealing sleeve 11 and the rotary central tube 5 are axially positioned. When the linear electric cylinder 3 pulls the drilling tool to lift, the liquid inlet sealing sleeve 11 floats along with the rotary central tube 5.

The rotary central tube 5 is a circular hollow tube, the upper end of the rotary central tube is connected with a rotary driving shaft 4a of the rotary motor 4, the rotary central tube passes through the liquid inlet sealing sleeve 11 and is connected with the drilling tool, a plurality of radial through holes are formed in the middle position of the liquid inlet sealing sleeve 11, so that a central pore canal is communicated with the inner cavity of the liquid inlet sealing sleeve 11, liquid in the cavity of the liquid inlet sealing sleeve 11 is allowed to enter the tube through the radial through holes and reach the bottom of a well, and the drilling tool is driven to rotate by the rotary motor 4 during simulated drilling.

The inlet port of the outer wall of the inlet sealing sleeve 11 is connected with the outlet of the slurry pump 9 through a high-pressure hose 10, the inlet of the slurry pump 9 is connected with the bottom outlet of the drilling fluid storage tank 8, and the upper side wall of the arc-shaped shaft 2a is connected with the drilling fluid storage tank 8 through a wellhead overflow pipe 12. The wellhead carrier 12 is located below the wellhead platform 1b. The electric cabinet 13 is placed on the ground and supplies power to the linear electric cylinder 3 and the rotary electric machine 4 through power cables.

The slurry pump 9 pumps the drilling fluid from the drilling fluid storage tank 8, the drilling fluid is fed into the fluid inlet sealing sleeve 11 through the high-pressure hose 10, the fluid inlet sealing sleeve 11 is used as a slurry inlet channel, the drilling fluid enters the rotary central pipe 5 from the radial through hole and downwards enters the drill rod 6 and the drilling tool, flows out of the bottom of the drilling tool, and then returns along the annulus between the drill rod 6 and the simulated shaft until overflows from the wellhead overflow pipe 12 and returns to the drilling fluid storage tank 8 for circulation.

As shown in fig. 2 to 5, the cuttings bed breaker 7 includes a breaker upper joint 7a, a sand removal rotor 7b, and a breaker lower joint 7c, an upper joint center hole 7a1 is provided along an axis of the breaker upper joint 7a, and a tapered female screw is provided at an upper port of the upper joint center hole 7a1 to be screwed with the drill pipe 6. An upper joint central shaft 7a2 connected with the upper joint central shaft 7a1 is arranged in the lower port of the upper joint central hole, namely, the lower end of the upper joint is reduced in diameter and the periphery of the upper joint is turned round to serve as the central shaft of the sand removal rotor 7b, and the lower end of the upper joint central shaft 7a2 is screwed into an inner screw hole of the lower joint 7c of the breaker.

The sand removal rotor 7b comprises a coaxial rotor inner cylinder 7b4 and a rotor outer cylinder 7b1, a rotor flow channel is formed between the outer wall of the rotor inner cylinder 7b4 and the inner wall of the rotor outer cylinder 7b1, a plurality of spiral guide strips 7b3 are uniformly arranged in the rotor flow channel, the rotor inner cylinder 7b4 is sleeved on the periphery of an upper joint central shaft 7a2, the rotor outer cylinder 7b1, the spiral guide strips 7b3 and the rotor inner cylinder 7b4 are connected into a whole, and a plurality of outer cylinder ribs 7b2 extending along the axial direction are uniformly arranged on the outer wall of the rotor outer cylinder 7b1.

The circumference of the upper joint center hole 7a1 is uniformly provided with a plurality of upper joint diversion holes 7a3 which are communicated with the upper port of the rotor runner, one part of drilling fluid from above flows through the center hole, the other part of drilling fluid enters the upper port of the rotor runner from each upper joint diversion hole 7a3, and in the downward flowing process along the rotor runner and the spiral diversion strip 7b3, torsion force is generated to drive the sand removal rotor 7b to rotate, namely, relative rotation is generated between the sand removal rotor 7b and the drill rod 6, and each outer barrel convex edge 7b2 on the outer wall of the rotor outer barrel 7b1 stirs rock debris settled on the bottom wall of the simulated shaft and flows out of the wellhead along with the drilling fluid.

A plurality of lower joint converging holes 7c1 are uniformly arranged on the circumference of the lower joint center hole and are communicated with the lower port of the rotor runner. Drilling fluid flowing out of the rotor runner lower ports flows back into the lower joint center hole through the lower joint drain holes 7c1. The number of the upper joint diversion holes 7a3 and the lower joint collection holes 7c1 can be corresponding to the number of the spiral diversion strips 7b3, and a pair of upper joint diversion holes 7a3 and lower joint collection holes 7c1 are corresponding between the connected spiral diversion strips 7b3, so that the flow resistance is reduced, and larger sand cleaning torque force is generated.

The length of the rotor outer cylinder 7b1 is longer than that of the rotor inner cylinder 7b4, so that the length of the outer cylinder convex edge 7b2 is longer, and the sand cleaning effect is better. The upper end of the rotor outer cylinder 7b1 is sleeved on the periphery of the lower end of the upper connector 7a of the breaker and is in clearance fit, and the lower end of the rotor outer cylinder 7b1 is sleeved on the periphery of the upper end of the lower connector 7c of the breaker and is in clearance fit, so that friction resistance of a lap joint is reduced, and leakage quantity of the lap joint is reduced.

The outer wall of the upper connector 7a of the breaker is uniformly provided with a plurality of upper connector spiral grooves 7a4, the outer wall of the lower connector 7c of the breaker is uniformly provided with a plurality of lower connector spiral grooves 7c2, and the spiral directions of the upper connector spiral grooves 7a4 and the lower connector spiral grooves 7c2 are the same. The drilling fluid flows upwards along the lower joint spiral groove 7c2 and the upper joint spiral groove 7a4 in a rotating way, so that the flow rate of the drilling fluid is improved, the sand carrying capacity of the drilling fluid is improved, and the cleaned rock scraps are prevented from falling back to the bottom of the well again under the condition that the flow rate of the drilling fluid is unchanged.

The working conditions of the test device which are commonly simulated comprise working conditions of simulating drilling of a straight well section, an inclined well section and a horizontal well section, working conditions of simulating rotary drilling, sliding drilling and compound drilling, influences of drilling fluids with different properties on formation of a rock debris bed under different displacement are simulated, and velocities of the rock debris bed formed by lithology with different properties under the same conditions are simulated.

When the simulation test of the formation process of the rock cuttings bed is carried out, the test without the rock cuttings bed breaker 7 is usually carried out, the rock cuttings bed breaker 7 can be removed firstly, the lower end of the drill rod 6 is directly connected with a drill bit, a simulated rock core is arranged at the bottom of a simulated shaft, and the rock core is required to have better drillability. The method can be divided into rotary drilling of a straight well section, rotary drilling of an inclined well section, rotary drilling of a straight well section, rotary drilling of an inclined well section and rotary drilling of a horizontal well section. With the rotation of the drill bit, the rock core is continuously drilled, drilling fluid circulates normally, tests are started on an arc section with a well inclination angle exceeding 35 degrees, and a rock debris bed is easily formed from what angle is observed.

Then, a rock debris bed breaker 7 is arranged at the lower end of the drill rod 6, a drill bit is connected to the lower end of the rock debris bed breaker 7, and the test is started from an arc section exceeding 35 degrees again, so that the condition that the rock debris bed is broken is observed.

The drill bit is not arranged at the lower end of the rock debris bed breaker 7, and only inclined shaft section sliding drilling and inclined shaft section and horizontal shaft section sliding drilling can be performed. The artificial cuttings are directly placed in the drilling section, and the sand cleaning effect of the cuttings bed breaker 7 is directly tested.

Sliding drilling experiments can also be performed. The experiment is only performed by sliding drilling of an inclined well section and a horizontal well section. The artificial cuttings are placed in the drilling section, the cuttings bed breaker 7 is removed from the drill assembly, the rotary motor 4 does not rotate, and only the linear electric cylinder 3 is used to lower the drill and apply weight.

The parameters of drilling fluid, pumping pressure, displacement, weight on bit, rotating speed and the like used in the experiment are determined by a user, and after each experiment is finished, the artificial glass shaft can be opened to observe the condition of the underground cuttings bed.

Through the above multiple experiments, the device can more intuitively observe the formation process of the rock debris bed and verify the actual effect of the rock debris bed damage tool, and a scientific and reasonable technical measure and solution are formulated aiming at the underground actual situation.

The foregoing description of the preferred embodiments of the present utility model illustrates and describes the basic principles and main features of the present utility model and the advantages of the present utility model, and is not meant to limit the scope of the present utility model, as it should be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments. In addition to the embodiments described above, other embodiments of the utility model are possible without departing from the spirit and scope of the utility model. The utility model also has various changes and improvements, and all technical schemes formed by adopting equivalent substitution or equivalent transformation fall within the protection scope of the utility model. The scope of the utility model is defined by the appended claims and equivalents thereof. The technical features of the present utility model that are not described may be implemented by or using the prior art, and are not described herein.

Claims

1. The utility model provides a detritus bed sand removal analogue test device in pit, includes simulation derrick, its characterized in that: the top of the simulation derrick is fixedly provided with an upper platform, the middle of the simulation derrick is fixedly provided with a wellhead platform, a simulation shaft is fixed below the wellhead platform and comprises an arc shaft and a horizontal shaft connected to the lower end of the arc shaft, a drill rod is arranged in the simulation shaft, the lower end of the drill rod is connected with a cuttings bed breaker, the upper end of the drill rod is connected with a rotary central pipe, the upper end of the rotary central pipe is driven by a rotary motor, the upper end of the rotary motor is suspended at the lower end of an output rod of a linear electric cylinder, and the linear electric cylinder is fixed on the upper platform; the middle section periphery cover of rotatory center tube is equipped with the feed liquor seal cover, is equipped with radial through-hole on the rotatory center tube and communicates with each other with the inner chamber of feed liquor seal cover, the feed liquor interface of feed liquor seal cover outer wall links to each other with the export of slush pump through high-pressure hose, the entry of slush pump links to each other with the bottom export of drilling fluid storage tank, the upper portion lateral wall of arc pit shaft links to each other with the drilling fluid storage tank through the well head overflow pipe.

2. The downhole cuttings bed cleaning simulation test apparatus of claim 1, wherein: the upper end and the lower end of the liquid inlet sealing sleeve are sealed with the periphery of the rotary central tube through sealing rings.

3. The downhole cuttings bed cleaning simulation test apparatus of claim 1, wherein: the wellhead overflow pipe is positioned below the wellhead platform.

4. The downhole cuttings bed cleaning simulation test apparatus of claim 1, wherein: the lower end of the rock debris bed breaker is connected with a drill bit, and a rock core is arranged in the simulated shaft.

5. The downhole cuttings bed cleaning simulation test apparatus of claim 1, wherein: the two sides of the rotating motor are respectively supported on corresponding vertical guide rails through sliding blocks, and the vertical guide rails are respectively fixed between the upper platform and the wellhead platform.

6. The downhole cuttings bed cleaning simulation test apparatus of claim 1, wherein: the rock debris bed breaker comprises a breaker upper joint, a sand removal rotor and a breaker lower joint, wherein an upper joint center hole is formed along the axis of the breaker upper joint, an upper joint center shaft connected with the upper joint center hole into a whole is arranged in the lower port of the upper joint center hole, and the lower end of the upper joint center shaft is screwed into an inner screw hole of the breaker lower joint; the sand removal rotor comprises a coaxial rotor inner cylinder and a rotor outer cylinder, a rotor flow passage is formed between the outer wall of the rotor inner cylinder and the inner wall of the rotor outer cylinder, a plurality of spiral guide strips are uniformly arranged in the rotor flow passage, the rotor inner cylinder is sleeved on the periphery of the upper joint central shaft, and a plurality of outer cylinder ribs extending along the axial direction are uniformly arranged on the outer wall of the rotor outer cylinder; the circumference of the upper joint center hole is uniformly provided with a plurality of upper joint diversion holes which are communicated with the upper port of the rotor flow channel, and the circumference of the lower joint center hole is uniformly provided with a plurality of lower joint diversion holes which are communicated with the lower port of the rotor flow channel.

7. The downhole cuttings bed sand removal simulation test apparatus of claim 6, wherein: the length of the rotor outer cylinder is greater than that of the rotor inner cylinder, the upper end of the rotor outer cylinder is sleeved on the periphery of the lower end of the upper connector of the breaker, and the lower end of the rotor outer cylinder is sleeved on the periphery of the upper end of the lower connector of the breaker.

8. The downhole cuttings bed sand removal simulation test apparatus of claim 6, wherein: the outer wall of the upper connector of the breaker is uniformly provided with a plurality of upper connector spiral grooves, the outer wall of the lower connector of the breaker is uniformly provided with a plurality of lower connector spiral grooves, and the rotation directions of the upper connector spiral grooves and the lower connector spiral grooves are the same.

9. The downhole debris bed sand removal simulation test apparatus according to any one of claims 1-8, wherein: the simulation shaft is an organic glass cylinder body surrounded by two halves, and all the sections are sequentially connected through flanges and bolts.