Horizontal well section shaft simulation experiment device

Abstract

The invention relates to the technical field of wellbore pressure experiments, and particularly discloses a horizontal well section wellbore simulation experiment device which comprises an experiment detection pushing assembly, a pressure applying assembly is installed on the side face of the experiment detection pushing assembly, and wellbore fixing assemblies are installed on the two sides of the experiment detection pushing assembly. The pressure applying assembly comprises a positioning pushing shaft, first guiding positioning holes are formed in the two sides of the outer side of the positioning pushing shaft, first limiting circular plates are fixedly connected to the two sides of the positioning pushing shaft, and a shaft extrusion assembly is fixedly connected to the bottoms of the first limiting circular plates; by monitoring the height of the monitoring circular plate when the shaft extrusion assembly is in contact with the outer side of the shaft, the pressure resistance degree of the shaft can be judged after the monitoring circular plate descends, and whether the shaft can work for a long time at a set pressure or not can be judged through long-time monitoring by applying a specified pressure, so that a user can conveniently perform an experiment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wellbore pressure experiment, more particularly to a horizontal well section wellbore simulation experiment device. BACKGROUND

[0002] With the continuous development of oil and gas exploitation technology, horizontal well technology has become an important means to improve oil and gas recovery. However, the integrity evaluation of horizontal well section wellbore under complex geological conditions and high pressure environment has always been a major technical challenge faced by the industry. At present, the existing wellbore pressure testing equipment has significant deficiencies in wellbore positioning and fixing, especially for experimental wellbores of different length specifications. The traditional equipment cannot realize rapid and accurate positioning and fixing, resulting in long experimental preparation time, complex operation, and difficulty in ensuring positioning accuracy. At the same time, the existing equipment lacks effective length adjustment mechanism, which cannot adapt to diversified experimental demands, seriously affecting the experimental efficiency and accuracy.

[0003] In terms of wellbore outside pressure testing, the traditional pressure applying device has problems such as uneven pressure distribution and low pressure applying precision. The existing equipment usually adopts a single pressure applying method, which cannot realize uniform extrusion of the wellbore outer wall, resulting in that the test results cannot truly reflect the stress state of the wellbore under actual working conditions. More critically, the existing equipment lacks real-time and accurate pressure monitoring and crack detection mechanism, which cannot timely detect the tiny cracks generated in the wellbore under pressure, nor accurately evaluate the pressure limit and long-term pressure bearing capacity of the wellbore. The lack of such detection capability poses a great safety hazard to wellbore quality evaluation, which is difficult to meet the strict requirements of modern oil and gas exploitation on wellbore reliability.

[0004] For wellbore inside pressure testing, the existing technology also faces many limitations. The traditional internal pressure testing method mainly relies on injecting fluid into the wellbore to apply pressure, but lacks effective leakage detection and pressure monitoring means. When cracks appear on the inner wall of the wellbore, the existing equipment often cannot timely and accurately detect the leakage phenomenon, resulting in a significant reduction in the reliability of test results. In addition, the existing equipment cannot realize accurate positioning of the leakage position and quantitative analysis of the leakage degree when conducting internal pressure testing, making the wellbore integrity evaluation lack scientific basis. Especially in long-term pressure testing, the existing equipment cannot provide continuous and stable monitoring data, making it difficult to evaluate the reliability and safety of the wellbore under long-term working conditions.

[0005] The existing wellbore testing equipment also has obvious defects in experimental operation convenience and equipment resetting function. After completing a test, the traditional equipment usually needs manual complex disassembly and reinstallation operation, which not only consumes time and effort, but also easily affects the accuracy of the next experiment due to human operation errors. The lack of automatic equipment resetting mechanism makes it difficult to conduct continuous multiple experiments, which seriously restricts the experimental efficiency. At the same time, the structural design of the existing equipment is often too complex, the maintenance cost is high, and the operating personnel need to be specially trained to use it skillfully, which further limits the popularization and application of the equipment. Therefore, it is urgent to develop a comprehensive wellbore simulation experiment device integrating wellbore positioning, pressure application, real-time monitoring and automatic resetting to meet the high standard requirements of modern petroleum industry for wellbore quality testing. SUMMARY

[0006] In order to overcome the above-mentioned defects of the prior art, the present application provides a horizontal well section wellbore simulation experiment device to solve the problems in the above background art.

[0007] The present application provides the following technical scheme: a horizontal well section wellbore simulation experiment device, comprising an experimental detection pushing assembly, a pressure application assembly is installed on the side of the experimental detection pushing assembly, wellbore fixing assemblies are installed on both sides of the experimental detection pushing assembly, the pressure application assembly comprises a positioning pushing shaft, first guide positioning holes are opened on both sides of the outer side of the positioning pushing shaft, first limiting circular plates are fixedly connected on both sides of the positioning pushing shaft, a wellbore extrusion assembly is fixedly connected to the bottom of the first limiting circular plate, and a crack detection assembly is arranged on the outer side of the wellbore extrusion assembly. The crack detection assembly comprises a rubber sealing cavity, a matching arc surface is opened in the bottom of the rubber sealing cavity, a limiting guide block is fixedly connected to the top of the rubber sealing cavity, monitoring barrels are fixedly connected to the front and back surfaces of the top of the rubber sealing cavity, monitoring circular plates are arranged on the inner side of the monitoring barrels, a first square groove is opened in the top of the limiting guide block, second square grooves are opened in the front and back surfaces of the top of the limiting guide block, a second square groove is fixedly connected to the top of the front and back surfaces of the limiting guide block, second guide positioning rods are fixedly connected to the top of the limiting guide block and the fixed support plate, second limiting circular plates are fixedly connected to the outer side of the second guide positioning rods, sliding ring plates are installed on the outer side of the second guide positioning rods, first springs are fixedly connected to the bottom of the sliding ring plates, and second springs are fixedly connected to the top of the monitoring circular plates.

[0008] Further, the experimental detection pushing assembly comprises a positioning base plate, the top of the positioning base plate is fixedly connected with a supporting positioning rod, one side of the supporting positioning rod away from the positioning base plate is fixedly connected with an arc top positioning plate, the two sides of the top of the positioning base plate are fixedly connected with mounting fixed plates, one side of the mounting fixed plate on one side of the top of the positioning base plate is fixedly connected with a driving motor, the output shaft of the driving motor is fixedly connected with a transmission shaft, the outer side of the transmission shaft is fixedly connected with a transmission gear, the front and back surfaces of the guide positioning plate are fixedly connected with guide positioning plates, the inner side of the guide positioning plate is fixedly connected with a positioning ring pipe, the outer side of the positioning ring pipe is mounted with a positioning bearing, the outer side of the positioning bearing is mounted with a pushing circular plate, the side surface of the pushing circular plate is provided with a pushing arc-shaped groove, and the side surface of the guide positioning plate is provided with a first guide positioning rod.

[0009] Further, the well shaft extrusion assembly comprises a first positioning pushing block, the bottom of the first positioning pushing block is fixedly connected with a well shaft extrusion block, the two sides of the top of the well shaft extrusion block are fixedly connected with lifting extrusion blocks, one side of the lifting extrusion block away from the first positioning pushing block is mounted with a limiting pushing plate, the top of the limiting pushing plate is provided with a second guide positioning hole, the top of the first positioning pushing block is provided with an arc-shaped connecting groove, and the top of the well shaft extrusion block is provided with connecting holes on the front and back surfaces.

[0010] Further, the well shaft fixing assembly comprises a positioning circular plate, one side of the positioning circular plate close to the pressure applying assembly is fixedly connected with a first guide positioning hole, one side of the positioning circular plate close to the pressure applying assembly is fixedly connected with a sealing ring pipe, one side of the sealing circular plate away from the positioning circular plate is fixedly connected with a hexagonal positioning column, and the outer side of the hexagonal positioning column is fixedly connected with a bent positioning plate.

[0011] Further, the teeth of the transmission gear outer side are engaged with the transmission teeth, the thickness of the transmission teeth is same with the thickness of the pushing circular plate, the thickness of the pushing circular plate is same with the thickness of the transmission gear, the side surface of the pushing circular plate is on the same plane with the side surface of the transmission gear, the side surface of the guide positioning plate is provided with a guide groove, the width of the guide positioning plate guide groove is same with the width of the pushing arc-shaped groove, and the width of the pushing arc-shaped groove and the diameter of the positioning pushing shaft are gap fitted.

[0012] Further, the number of the pushing arc-shaped grooves is same with the number of the guide positioning plates, the diameter of the first guide positioning rod is gap fitted with the diameter of the first guide positioning hole, the top of the rubber sealing cavity is provided with a lifting groove, the opening size of the limiting guide block bottom is same with the size of the lifting groove of the rubber sealing cavity, the opening of the bottom of the monitoring cylinder is communicated with the inner side of the rubber sealing cavity, and the diameter of the inner side of the monitoring cylinder is gap fitted with the diameter of the monitoring circular plate.

[0013] Further, the gap fit between the diameter of the arc-shaped connecting groove and the diameter of the positioning pushing shaft, the gap fit between the projected size of the bottom of the first positioning pushing block and the cross-sectional size of the first square groove, the gap fit between the projected size of the bottom of the lifting extruding block and the cross-sectional size of the second square groove, and the fixed connection between the bottom of the first spring and the top of the limiting guide block.

[0014] Further, the gap fit between the diameter of the matching arc surface and the diameter of the wellbore, the gap fit between the projected size of the bottom of the wellbore extruding block and the cross-sectional size of the inner side of the limiting guide block, and the matching relationship between the sizes of the first positioning pushing block, the wellbore extruding block and the lifting extruding block and the limiting guide block, the first square groove and the second square groove need to meet the conditions that the first positioning pushing block, the wellbore extruding block and the lifting extruding block can be lifted relative to the crack detection assembly and can ensure sealing, and the gap fit between the diameters of the sealing ring tube and the sealing circular plate and the diameters of the inner and outer sides of the wellbore.

[0015] Technical effects and advantages of the present application: 1. When the pressure experiment on the wellbore is needed, the wellbore fixing assembly is pushed to the inner side of one end of the wellbore, so that the bending positioning plate is bent and adheres to the inner side of the wellbore, thereby positioning the wellbore on the wellbore fixing assembly, then the wellbore is passed through the inner side of the positioning ring tube, then the other wellbore fixing assembly is pushed to the inner side of the wellbore from the other side of the equipment, thereby completing the positioning of the wellbore, and the length of the experimental wellbore can be adjusted according to the actual needs, the distance between the two pushing circular plates, so as to facilitate the user to position the wellbore on the inner side of the equipment. 2. The application is in the experiment, by driving motor work drive shaft rotation, in turn drive gear rotation, and then through the transmission gear and transmission gear teeth between each other meshing drive push plate rotation, and then can drive push arc slot rotation, and at the same time in the first guide positioning rod and the positioning of the first guide positioning hole, make the positioning push shaft to the inside of the gathering, and at the same time make the wellbore extrusion assembly and crack detection assembly to the inside of the gathering, after the cooperation of the arc surface adheres to the outside of the wellbore, continue to push the positioning push shaft to the inside of the gathering, make the wellbore extrusion assembly move to the inside of the relative crack detection assembly, in the process of the wellbore extrusion assembly moving to the inside, make the wellbore extrusion block, the first positioning push block and the lifting extrusion block move to the inside of the rubber sealing cavity, in turn extrude the gas inside the rubber sealing cavity, so that the gas pressure inside the cavity formed between the rubber sealing cavity and the wellbore rises, when the gas pressure rises, the monitoring disc rises on the inside of the monitoring cylinder, until the bottom of the wellbore extrusion block adheres to the outside of the wellbore, the monitoring disc stops rising, then under the continuous pressure of the wellbore extrusion assembly, if the wellbore appears crack will cause the gas inside the rubber sealing cavity to leak to the outside, make the gas pressure inside the rubber sealing cavity drop, in turn make the monitoring disc drop under the push of the second spring, then by monitoring the height of the monitoring disc when the wellbore extrusion assembly contacts the outside of the wellbore, after the monitoring disc drops, the pressure resistance of the wellbore can be judged, and the specified pressure can be applied, then by long time monitoring, whether the wellbore can work under a set pressure for a long time can be judged, which is convenient for the user to experiment; 3. When the inside of the wellbore needs to be tested, the crack detection assembly and the wellbore extrusion assembly are adhered to the outside of the wellbore, then water is injected into the inside of the wellbore, the internal pressure of the wellbore rises with the continuous injection of water, when the wellbore appears crack due to the internal pressure, the water will leak to the outside, so that the water enters the inside of the rubber sealing cavity, thereby causing the pressure inside the rubber sealing cavity to further rise, making the monitoring disc rise, at this time, by monitoring whether the height of the monitoring disc rises, the integrity of the wellbore can be judged, which is convenient for the user to experiment the inside pressure, and the specified pressure can be applied, then by long time monitoring, whether the wellbore can work under a set pressure for a long time can be judged, which is convenient for the user to perform different detection work; 4. After the experiment is completed, the drive motor is driven to rotate reversely, in turn making the pressure applying assembly return to the original position, at this time, the first spring rebounds, pushing the crack detection assembly to move relative to the wellbore extrusion assembly, then the interface resets the wellbore extrusion assembly and the crack detection assembly, which is convenient for the next detection work. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structure schematic diagram of the application; Figure 2 Experimental detection pushing assembly structure diagram of the present application; Figure 3 Pressure applying assembly structure diagram of the present application; Figure 4 Pressure applying assembly partial structure diagram of the present application; Figure 5 Pressure applying assembly partial structure cross-section diagram of the present application; Figure 6 Wellbore extruding assembly structure diagram of the present application; Figure 7 Wellbore extruding assembly structure diagram of the present application; Figure 8 Wellbore fixing assembly structure diagram of the present application.

[0017] The figure marks are: 1, experimental detection pushing assembly; 101, positioning bottom plate; 102, supporting positioning rod; 103, installation fixing plate; 104, driving motor; 105, transmission shaft; 106, transmission gear; 107, arc top positioning plate; 108, guiding positioning plate; 109, positioning ring tube; 1010, positioning bearing; 1011, pushing round plate; 1012, pushing arc-shaped groove; 1013, first guiding positioning rod; 1014, transmission gear tooth; 2, pressure applying assembly; 201, positioning pushing shaft; 202, first guiding positioning hole; 203, first limiting round plate; 204, wellbore extruding assembly; 2041, first positioning pushing block; 2042, wellbore extruding block; 2043, lifting extruding block; 2044, limiting pushing plate; 2045, second guiding positioning hole; 2046, arc-shaped connecting groove; 2047, connecting hole; 205, crack detection assembly; 2051, rubber sealing cavity; 2052, matching arc surface; 2053, limiting guiding block; 2054, monitoring cylinder; 2055, monitoring round plate; 2056, first square groove; 2057, second square groove; 2058, fixed supporting plate; 2059, second guiding positioning rod; 20510, second limiting round plate; 20511, sliding ring plate; 20512, first spring; 20513, second spring; 3, wellbore fixing assembly; 301, positioning round plate; 302, sealing round plate; 303, sealing ring tube; 304, hexagonal positioning column; 305, bending positioning plate. DETAILED DESCRIPTION

[0018] The technical solutions in the present application will be described clearly and completely in combination with the drawings in the present application. In addition, the forms of the structures described in the following embodiments are only examples, and the horizontal well section wellbore simulation experiment device involved in the present application is not limited to the structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative labor belong to the scope of protection of the present application.

[0019] With reference to Figures 1 to 8 The present application provides a horizontal well section wellbore simulation experiment device, which comprises an experimental detection pushing assembly 1, a pressure applying assembly 2 is installed on the side of the experimental detection pushing assembly 1, wellbore fixing assemblies 3 are installed on both sides of the experimental detection pushing assembly 1, the pressure applying assembly 2 comprises a positioning pushing shaft 201, first guiding positioning holes 202 are formed on both sides of the outer side of the positioning pushing shaft 201, first limiting circular plates 203 are fixedly connected to both sides of the positioning pushing shaft 201, wellbore extruding assemblies 204 are fixedly connected to the bottom of the first limiting circular plates 203, and crack detection assemblies 205 are arranged on the outer side of the wellbore extruding assemblies 204. The crack detection assembly 205 comprises a rubber sealing cavity 2051, the bottom of the rubber sealing cavity 2051 is provided with a matching arc surface 2052, the top of the rubber sealing cavity 2051 is fixedly connected with a limiting guide block 2053, the front and back surfaces of the top of the rubber sealing cavity 2051 are fixedly connected with monitoring barrels 2054, the inner side of the monitoring barrel 2054 is provided with a monitoring circular plate 2055, the top of the limiting guide block 2053 is provided with a first square groove 2056, the front and back surfaces of the top of the limiting guide block 2053 are provided with second square grooves 2057, the top of the front and back surfaces of the limiting guide block 2053 is fixedly connected with the second square grooves 2057, the top of the limiting guide block 2053 and the fixed support plate 2058 are fixedly connected with second guide positioning rods 2059, the outer side of the second guide positioning rod 2059 is fixedly connected with a second limiting circular plate 20510, the outer side of the second guide positioning rod 2059 is provided with a sliding ring plate 20511, the bottom of the sliding ring plate 20511 is fixedly connected with a first spring 20512, the top of the monitoring circular plate 2055 is fixedly connected with a second spring 20513; when the experiment is carried out, the driving motor 104 is driven to work to drive the transmission shaft 105 to rotate, and then drive the transmission gear 106 to rotate, then drive the pushing circular plate 1011 to rotate through the mutual engagement between the transmission gear 106 and the transmission gear teeth 1014, then drive the pushing arc-shaped groove 1012 to rotate, and at the same time, under the positioning of the first guide positioning rod 1013 and the first guide positioning hole 202, the positioning pushing shaft 201 is gathered to the inner side, and at the same time, the well shaft extrusion assembly 204 and the crack detection assembly 205 are gathered to the inner side, after the matching arc surface 2052 is attached to the outer side of the well shaft, when the positioning pushing shaft 201 is continuously pushed to the inner side, the well shaft extrusion assembly 204 moves to the inner side relative to the crack detection assembly 205, in the process that the well shaft extrusion assembly 204 moves to the inner side, the well shaft extrusion block 2042, the first positioning pushing block 2041 and the lifting extrusion block 2043 move to the inner side of the rubber sealing cavity 2051, and then extrude the gas in the inner side of the rubber sealing cavity 2051, so that the air pressure in the cavity formed between the rubber sealing cavity 2051 and the well shaft rises, the monitoring circular plate 2055 rises on the inner side of the monitoring barrel 2054 when the air pressure rises, until the bottom of the well shaft extrusion block 2042 is attached to the outer side of the well shaft, the monitoring circular plate 2055 stops rising, then under the continuous pressure exerted by the well shaft extrusion assembly 204, if the well shaft has cracks, the gas in the inner side of the rubber sealing cavity 2051 will leak to the outer side, so that the air pressure in the inner side of the rubber sealing cavity 2051 decreases, and then the monitoring circular plate 2055 is lowered under the pushing of the second spring 20513, then the height of the monitoring circular plate 2055 when the well shaft extrusion assembly 204 contacts the outer side of the well shaft is monitored, after the monitoring circular plate 2055 is lowered, the pressure resistance of the well shaft can be judged, and the specified pressure can be applied, then whether the well shaft can work for a long time under a certain pressure can be judged through long-term monitoring, which is convenient for the user to carry out the experiment.

[0020] In a preferred embodiment, the experimental detection pushing assembly 1 comprises a positioning base plate 101, the top of the positioning base plate 101 is fixedly connected with a supporting positioning rod 102, the side of the supporting positioning rod 102 away from the positioning base plate 101 is fixedly connected with an arc top positioning plate 107, the two sides of the top of the positioning base plate 101 are fixedly connected with mounting fixed plates 103, the side of the mounting fixed plate 103 on one side of the top of the positioning base plate 101 is fixedly connected with a driving motor 104, the output shaft of the driving motor 104 is fixedly connected with a transmission shaft 105, the outer side of the transmission shaft 105 is fixedly connected with a transmission gear 106, the front and back of the guide positioning plate 108 are fixedly connected with guide positioning plates 108, the inner side of the guide positioning plate 108 is fixedly connected with a positioning ring tube 109, the outer side of the positioning ring tube 109 is mounted with a positioning bearing 1010, the outer side of the positioning bearing 1010 is mounted with a pushing circular plate 1011, the side of the pushing circular plate 1011 is provided with a pushing arc-shaped groove 1012, and the side of the guide positioning plate 108 is provided with a first guide positioning rod 1013; after the experiment is completed, the driving motor 104 is driven to work to rotate reversely the transmission shaft 105 and the transmission gear 106, so as to make the pressure applying assembly 2 return to the original position, at this time, the first spring 20512 is rebounded to move the crack detection assembly 205 relative to the wellbore extrusion assembly 204, and then the interface resets the wellbore extrusion assembly 204 and the crack detection assembly 205, so as to facilitate the next detection work.

[0021] In a preferred implementation, the wellbore extrusion assembly 204 comprises a first positioning push block 2041, the bottom of the first positioning push block 2041 is fixedly connected with a wellbore extrusion block 2042, both sides of the top of the wellbore extrusion block 2042 are fixedly connected with a lifting extrusion block 2043, the side away from the first positioning push block 2041 of the lifting extrusion block 2043 is installed with a limiting push plate 2044, the top of the limiting push plate 2044 is provided with a second guide positioning hole 2045, the top of the first positioning push block 2041 is provided with an arc-shaped connecting groove 2046, and the top of the wellbore extrusion block 2042 is provided with a connecting hole 2047 on the front and back surfaces; when it is necessary to test the pressure on the inside of the wellbore, the crack detection assembly 205 and the wellbore extrusion assembly 204 are attached to the outside of the wellbore, then water is injected into the inside of the wellbore, the internal pressure of the wellbore is increased as the water continues to be injected, when the wellbore cracks due to the internal pressure, the water leaks out of the side, enters the inside of the rubber sealing cavity 2051, the pressure inside the rubber sealing cavity 2051 is further increased, the monitoring disc 2055 rises, at this time, whether the height of the monitoring disc 2055 rises is monitored, the integrity of the wellbore is judged, the pressure bearing on the inside is conveniently experimented, and whether the wellbore can work for a long time under a specified pressure is judged through long-time monitoring, which is convenient for users to experiment and perform different detection work.

[0022] In a preferred implementation, the wellbore fixing assembly 3 comprises a positioning disc 301, the side close to the pressure applying assembly 2 of the positioning disc 301 is fixedly connected with a first guide positioning hole 202, the side close to the pressure applying assembly 2 of the positioning disc 301 is fixedly connected with a sealing ring pipe 303, the side away from the positioning disc 301 of the sealing disc 302 is fixedly connected with a hexagonal positioning column 304, and the outer side of the hexagonal positioning column 304 is fixedly connected with a bent positioning plate 305; when it is necessary to test the pressure of the wellbore, the wellbore fixing assembly 3 is pushed to the inside of one end of the wellbore, the bent positioning plate 305 is bent and attached to the inside of the wellbore, the wellbore is positioned on the wellbore fixing assembly 3, then the wellbore passes through the inside of the positioning ring pipe 109, then another wellbore fixing assembly 3 is pushed to the inside of the wellbore from the other side of the equipment, the positioning of the wellbore is completed, and the distance between the two push discs 1011 can be adjusted according to the actual need of the length of the experimental wellbore, which is convenient for users to position the wellbore on the inside of the equipment.

[0023] In a preferred embodiment, the teeth outside the transmission gear 106 are engaged with the transmission teeth 1014, the thickness of the transmission teeth 1014 is the same as the thickness of the pushing disc 1011, the thickness of the pushing disc 1011 is the same as the thickness of the transmission gear 106, the side surface of the pushing disc 1011 is in the same plane as the side surface of the transmission gear 106, the side surface of the guide positioning plate 108 is provided with a guide groove, the width of the guide groove of the guide positioning plate 108 is the same as the width of the pushing arc-shaped groove 1012, and the width of the pushing arc-shaped groove 1012 and the diameter of the positioning pushing shaft 201 are clearance fit.

[0024] In a preferred embodiment, the number of the pushing arc-shaped grooves 1012 is the same as the number of the guide positioning plates 108, the diameter of the first guide positioning rod 1013 and the diameter of the first guide positioning hole 202 are clearance fit, the top of the rubber sealing cavity 2051 is provided with a lifting groove, the opening size of the bottom of the limiting guide block 2053 is the same as the size of the lifting groove of the rubber sealing cavity 2051, the opening of the bottom of the monitoring cylinder 2054 is in communication with the inner side of the rubber sealing cavity 2051, and the diameter of the inner side of the monitoring cylinder 2054 and the diameter of the monitoring disc 2055 are clearance fit.

[0025] In a preferred embodiment, the diameter of the arc-shaped connecting groove 2046 and the diameter of the positioning pushing shaft 201 are clearance fit, the projection size of the bottom of the first positioning pushing block 2041 and the cross-sectional size of the first square groove 2056 are clearance fit, the projection size of the bottom of the lifting extrusion block 2043 and the cross-sectional size of the second square groove 2057 are clearance fit, and the bottom of the first spring 20512 is fixedly connected with the top of the limiting guide block 2053.

[0026] In a preferred embodiment, the diameter of the matching arc surface 2052 and the diameter of the wellbore are clearance fit, the projection size of the bottom of the wellbore extrusion block 2042 and the cross-sectional size of the inner side of the limiting guide block 2053 are clearance fit, and the sizes of the first positioning pushing block 2041, the wellbore extrusion block 2042 and the lifting extrusion block 2043 and the matching relationship between the limiting guide block 2053, the first square groove 2056 and the second square groove 2057 need to meet that the first positioning pushing block 2041, the wellbore extrusion block 2042 and the lifting extrusion block 2043 can be lifted relative to the crack detection assembly 205 and can ensure sealing, and the diameters of the sealing ring tube 303 and the sealing disc 302 and the diameters of the inner and outer sides of the wellbore are clearance fit.

[0027] The working principle of the present application: when the wellbore needs to be tested for pressure, the wellbore fixing assembly 3 is pushed to the inside of one end of the wellbore, so that the bent positioning plate 305 is bent and fits on the inside of the wellbore, thereby positioning the wellbore on the wellbore fixing assembly 3, then the wellbore is passed through the inside of the positioning ring tube 109, then the other wellbore fixing assembly 3 is pushed from the other side of the device to the inside of the wellbore, thereby completing the positioning of the wellbore, and the distance between the two pushing circular plates 1011 can be adjusted according to the actual needs of the experimental wellbore, so that the user can position the wellbore inside the device; When the experiment is performed, the driving motor 104 is driven to rotate the transmission shaft 105, thereby rotating the transmission gear 106, then the transmission gear 106 and the transmission teeth 1014 are engaged to rotate the pushing circular plate 1011, then the pushing arc-shaped groove 1012 is rotated, and at the same time, under the positioning of the first guide positioning rod 1013 and the first guide positioning hole 202, the positioning pushing shaft 201 is gathered inward, and at the same time, the wellbore extrusion assembly 204 and the crack detection assembly 205 are gathered inward, after the arc surface 2052 is fitted on the outside of the wellbore, when the positioning pushing shaft 201 is continuously pushed inward, the wellbore extrusion assembly 204 moves inward relative to the crack detection assembly 205, in the process of the wellbore extrusion assembly 204 moving inward, the wellbore extrusion block 2042, the first positioning pushing block 2041 and the lifting extrusion block 2043 move inward into the rubber sealing cavity 2051, thereby extruding the gas inside the rubber sealing cavity 2051, so that the air pressure inside the cavity formed between the rubber sealing cavity 2051 and the wellbore rises, when the air pressure rises, the monitoring circular plate 2055 rises inside the monitoring cylinder 2054 until the bottom of the wellbore extrusion block 2042 is fitted on the outside of the wellbore, then the monitoring circular plate 2055 stops rising, then under the continuous pressure exerted by the wellbore extrusion assembly 204, if the wellbore has cracks, the gas inside the rubber sealing cavity 2051 will leak outward, so that the air pressure inside the rubber sealing cavity 2051 decreases, thereby causing the monitoring circular plate 2055 to descend under the pushing of the second spring 20513, then the height of the monitoring circular plate 2055 when the wellbore extrusion assembly 204 contacts the outside of the wellbore is monitored, after the monitoring circular plate 2055 descends, the pressure resistance of the wellbore can be determined, and the wellbore can be tested under a specified pressure for a long time to determine whether the wellbore can work under the specified pressure for a long time, thereby facilitating the user to perform the experiment; When the pressure test of the inside of the wellbore is needed, the crack detection assembly 205 and the wellbore extrusion assembly 204 are attached to the outside of the wellbore, and then the water source is injected into the inside of the wellbore, and the internal pressure of the wellbore is increased with the continuous injection of the water source. When the wellbore cracks due to the internal pressure, the water source will leak like the outside to enter the inside of the rubber sealing cavity 2051, thereby causing the pressure inside the rubber sealing cavity 2051 to further increase, causing the monitoring disc 2055 to rise. At this time, by monitoring whether the height of the monitoring disc 2055 rises, the integrity of the wellbore can be judged, and the pressure bearing of the inside can be tested. The specified pressure can be applied, and then the wellbore can be judged whether it can work for a long time under a certain pressure through long-term monitoring, which is convenient for users to test and different detection work. After the experiment is completed, the driving motor 104 is driven to work to reverse the rotation of the transmission shaft 105 and the transmission gear 106, thereby returning the pressure applying assembly 2 to the original position. At this time, the first spring 20512 rebounds to push the crack detection assembly 205 to move relative to the wellbore extrusion assembly 204, and then the interface resets the wellbore extrusion assembly 204 and the crack detection assembly 205, which is convenient for the next detection work.

[0028] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change; Secondly: the drawings of the disclosed embodiments only involve the structures related to the disclosed embodiments, and other structures can refer to the usual design, and in the case of no conflict, the same embodiment and different embodiments of the present application can be combined with each other; Finally: the above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A horizontal section wellbore simulation experiment device, comprising an experiment detection pushing assembly (1), characterized in that: The experimental detection push assembly (1) side is equipped with pressure exertion assembly (2), both sides of the experimental detection push assembly (1) are equipped with shaft fixing assembly (3), the pressure exertion assembly (2) includes positioning push shaft (201), the first guide positioning hole (202) is opened to the both sides outside the positioning push shaft (201), the both sides of the positioning push shaft (201) are fixedly connected with first limit round plate (203), the bottom of the first limit round plate (203) is fixedly connected with shaft extrusion assembly (204), the outside of the shaft extrusion assembly (204) is provided with crack detection assembly (205); The crack detection assembly (205) includes rubber sealing cavity (2051), the bottom of the rubber sealing cavity (2051) is equipped with matching camber (2052), the top of the rubber sealing cavity (2051) is fixedly connected with limit guide block (2053), the front and back of the top of the rubber sealing cavity (2051) are fixedly connected with monitoring cylinder (2054), the inner side of the monitoring cylinder (2054) is provided with monitoring round plate (2055), the top of the limit guide block (2053) is equipped with first square groove (2056), the front and back of the top of the limit guide block (2053) are equipped with second square groove (2057), the front and back of the limit guide block (2053) are fixedly connected with second square groove (2057), the top of the limit guide block (2053) and fixed support plate (2058) are fixedly connected with second guide positioning rod (2059), the outer side of the second guide positioning rod (2059) is fixedly connected with second limit round plate (20510), the outer side of the second guide positioning rod (2059) is equipped with sliding ring plate (20511), the bottom of the sliding ring plate (20511) is fixedly connected with first spring (20512), the top of the monitoring round plate (2055) is fixedly connected with second spring (20513).

2. The horizontal section wellbore simulation experimental device according to claim 1, characterized in that: The experiment detects the pushing assembly (1) including the positioning bottom plate (101), the top of the positioning bottom plate (101) is fixedly connected with the supporting positioning rod (102), the side, away from the positioning bottom plate (101), of the supporting positioning rod (102) is fixedly connected with the arc top positioning plate (107), the both sides of the top of the positioning bottom plate (101) are fixedly connected with the installation fixed plate (103), the side, of the one side installation fixed plate (103) of the top of the positioning bottom plate (101), is fixedly connected with the driving motor (104), the output shaft of the driving motor (104) is fixedly connected with the transmission shaft (105), the outside of the transmission shaft (105) is fixedly connected with the transmission gear (106), the front and back of the guide positioning plate (108) are fixedly connected with the guide positioning plate (108), the inside of the guide positioning plate (108) is fixedly connected with the positioning ring pipe (109), the outside of the positioning ring pipe (109) is installed with the positioning bearing (1010), the outside of the positioning bearing (1010) is installed with the pushing round plate (1011), the side of the pushing round plate (1011) is provided with the pushing arc-shaped groove (1012), the side of the guide positioning plate (108) is provided with the first guide positioning rod (1013).

3. The horizontal section wellbore simulation experimental device according to claim 2, characterized in that: The wellbore extrusion assembly (204) includes a first positioning pushing block (2041), the bottom of the first positioning pushing block (2041) is fixedly connected with a wellbore extrusion block (2042), the top of the wellbore extrusion block (2042) is fixedly connected with a lifting extrusion block (2043) on both sides, the side, away from the first positioning pushing block (2041), of the lifting extrusion block (2043) is installed with a limiting pushing plate (2044), the top of the limiting pushing plate (2044) is provided with a second guide positioning hole (2045), the top of the first positioning pushing block (2041) is provided with an arc-shaped connecting groove (2046), the top of the wellbore extrusion block (2042) is provided with a connecting hole (2047) on the front and back.

4. The horizontal section wellbore simulation experimental device according to claim 3, characterized in that: The wellbore fixing assembly (3) includes a positioning round plate (301), the side, close to the pressure applying assembly (2), of the positioning round plate (301) is fixedly connected with a first guide positioning hole (202), the side, close to the pressure applying assembly (2), of the positioning round plate (301) is fixedly connected with a sealing ring pipe (303), the side, away from the positioning round plate (301), of the sealing round plate (302) is fixedly connected with a hexagonal positioning column (304), the outside of the hexagonal positioning column (304) is fixedly connected with a bent positioning plate (305).

5. The horizontal section wellbore simulation experimental device according to claim 3, characterized in that: The teeth outside the transmission gear (106) are engaged with the transmission teeth (1014), the thickness of the transmission teeth (1014) is the same as the thickness of the pushing circular plate (1011), the thickness of the pushing circular plate (1011) is the same as the thickness of the transmission gear (106), the side surface of the pushing circular plate (1011) is in the same plane as the side surface of the transmission gear (106), the side surface of the guide positioning plate (108) is provided with a guide groove, the width of the guide groove of the guide positioning plate (108) is the same as the width of the pushing arc-shaped groove (1012), and the width of the pushing arc-shaped groove (1012) and the diameter of the positioning pushing shaft (201) are gap-fitted.

6. The horizontal section wellbore simulation experimental device according to claim 3, characterized in that: The number of the pushing arc-shaped grooves (1012) is the same as the number of the guide positioning plates (108), the diameter of the first guide positioning rod (1013) and the diameter of the first guide positioning hole (202) are gap-fitted, the top of the rubber sealing cavity (2051) is provided with a lifting groove, the bottom opening size of the limiting guide block (2053) is the same as the size of the lifting groove of the rubber sealing cavity (2051), the bottom opening of the monitoring cylinder (2054) is in communication with the inner side of the rubber sealing cavity (2051), and the diameter of the inner side of the monitoring cylinder (2054) and the diameter of the monitoring circular plate (2055) are gap-fitted.

7. The horizontal section wellbore simulation experimental device according to claim 3, characterized in that: The diameter of the arc-shaped connecting groove (2046) and the diameter of the positioning pushing shaft (201) are gap-fitted, the projection size of the bottom of the first positioning pushing block (2041) and the cross-sectional size of the first square groove (2056) are gap-fitted, the projection size of the bottom of the lifting extrusion block (2043) and the cross-sectional size of the second square groove (2057) are gap-fitted, and the bottom of the first spring (20512) is fixedly connected with the top of the limiting guide block (2053).

8. The horizontal section wellbore simulation experimental device according to claim 4, characterized in that: The diameter of the matching arc surface (2052) and the diameter of the wellbore are gap-fitted, the projection size of the bottom of the wellbore extrusion block (2042) and the cross-sectional size of the inner side of the limiting guide block (2053) are gap-fitted, and the sizes of the first positioning pushing block (2041), the wellbore extrusion block (2042) and the lifting extrusion block (2043) and the matching relationship between the limiting guide block (2053), the first square groove (2056) and the second square groove (2057) need to meet that the first positioning pushing block (2041), the wellbore extrusion block (2042) and the lifting extrusion block (2043) can be lifted relative to the crack detection assembly (205) and can ensure sealing, and the diameters of the sealing ring tube (303) and the sealing circular plate (302) and the diameters of the inner and outer sides of the wellbore are gap-fitted.

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