Horizontal well tubing corrosion-resistant testing device

Abstract

The application discloses a horizontal well oil pipe corrosion-resistant testing device, which comprises a testing main body, a weighing mechanism fixedly connected to the upper surface of the testing main body, a stretching mechanism arranged inside the testing main body and close to the upper side, an installation groove arranged below the stretching mechanism at the rear side of the testing main body, a circulating mechanism arranged in the installation groove, a motor arranged on one side of the circulating mechanism, a PLC control module fixedly installed on the surface of one side of the testing main body, and the circulating mechanism comprises a circulating bin and a driving wheel arranged in one side of the circulating bin, the driving wheel is in engagement with two symmetrical rotating discs, engagement teeth one are fixedly arranged on the opposite inner sides of the two rotating discs, a rotating drum is arranged between the two rotating discs, and engagement teeth two are arranged on both ends of the rotating drum.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of horizontal well tubing, and particularly relates to a horizontal well tubing corrosion resistance testing device. BACKGROUND

[0002] The horizontal well tubing corrosion resistance testing device is a special device for simulating the complex downhole environment of a horizontal well, scientifically evaluating the corrosion resistance of tubing materials or anticorrosive coatings in a laboratory.

[0003] The core function of the horizontal well tubing corrosion resistance testing device is to reproduce the downhole corrosion conditions, accelerate the corrosion process, and quickly obtain key data such as the corrosion rate and cracking resistance of the tubing, thereby providing experimental basis for tubing selection and anticorrosion process optimization. However, there is no horizontal well tubing corrosion resistance testing device on the market, and the current testing of horizontal well tubing is to sequentially introduce different corrosive substances into the pipeline and then discharge them through the pipeline to complete the testing. However, this testing method cannot accurately simulate the use environment of the horizontal well tubing, resulting in inaccurate test data and very low testing efficiency. Moreover, testing the horizontal well tubing only with corrosive substances can only test the corrosion rate of the horizontal well tubing under stress-free conditions, which may also lead to inaccurate test results. If only corrosive substances or tensile testing is performed, the use of the horizontal well cannot be truly restored, and therefore, a device capable of tensile testing and simultaneous corrosion testing is needed.

[0004] Therefore, we provide a horizontal well tubing corrosion resistance testing device. SUMMARY

[0005] The present application aims to solve the above technical problems and provide a horizontal well tubing corrosion resistance testing device, which has high testing efficiency, cyclic testing, synchronous testing, and accurate testing.

[0006] Therefore, the present application provides a horizontal well tubing corrosion resistance testing device, which includes a testing body, a weighing mechanism fixedly connected to the upper surface of the testing body, a tensile mechanism arranged inside the testing body near the upper side, an installation slot arranged on the rear side of the testing body below the tensile mechanism, a circulation mechanism arranged inside the installation slot, a motor arranged on one side of the circulation mechanism, and a PLC control module fixedly installed on the surface of one side of the testing body.

[0007] The circulating mechanism comprises a circulating bin, a driving wheel arranged inside one side of the circulating bin, two symmetrical rotating discs connected with the driving wheel, engagement teeth I fixedly arranged on the opposite inner sides of the two rotating discs, a rotating cylinder arranged between the two rotating discs, engagement teeth II arranged on both ends of the rotating cylinder, a rotating rod fixedly and penetratingly arranged inside the rotating cylinder, a screw thread arranged on the middle part of the rotating rod, two symmetrical fixed blocks rotatably connected with both ends of the screw thread, springs fixedly arranged on the opposite sides of the two fixed blocks, a moving block threadedly connected with the screw thread surface, a magnet fixedly connected with one end of the moving block, a moving cylinder rotatably connected with the end of the rotating rod, a limiting groove arranged on the circumference of the moving cylinder, a supporting block slidably connected with the circumference of the limiting groove, and a first spring arranged inside the supporting block with a limiting ball rotatably connected with one end of the first spring.

[0008] Preferably, the stretching mechanism comprises two symmetrical fixed plates I and an electric sliding rail I fixedly connected with the lower end of the two fixed plates I, two symmetrical fixed plates II arranged on one side of the fixed plate I, an electric sliding rail II fixedly connected with the lower end of the two fixed plates II, anti-skid strips fixedly arranged on the inner walls of the upper halves of the fixed plates I and the fixed plates II, a shunt bin arranged between the two fixed plates II, taper-shaped speed-changing pipes fixedly arranged on the surfaces of the two sides of the shunt bin, sealing rings fixedly arranged on the circumferences of the speed-changing pipes, and a concentrated conveying pipe fixedly arranged on one side of the shunt bin.

[0009] Preferably, a conveying pipe is arranged above the magnet, a plugging mechanism is arranged inside the conveying pipe, the plugging mechanism comprises a second spring and an extension rod arranged inside the second spring, a plugging block is fixedly connected with the upper end of the second spring and the extension rod, the lower end of the second spring and the extension rod is fixedly connected with the inner wall of the conveying pipe, and the conveying pipe is in communication with the concentrated conveying pipe.

[0010] Preferably, the rotating rod is rotatably connected with the inner wall of the rotating disc, the supporting block is two and symmetrical, one end of the rotating rod extends into the supporting block, and the other end of the rotating rod extends to the outside of the other supporting block.

[0011] Preferably, the weighing mechanism comprises a weighing table and a weighing sensor fixedly connected with the upper surface of the weighing table, and a fixing frame is arranged on the upper end of the weighing sensor.

[0012] Preferably, one side surface of the driving wheel is fixedly connected with the output shaft of the motor, and the motor is fixedly connected with the outside of the test body.

[0013] Preferably, sliding grooves are arranged on the opposite sides of the inner wall of the circulating bin, sliding rods are fixedly arranged on the two sides of the moving block, one end of the sliding rod is slidably connected with the inner wall of the sliding groove, and the sliding rods are two groups, each group having two sliding rods.

[0014] Preferably, the limiting grooves are two groups, and each group has two limiting grooves, and the first spring and the limiting ball are two, and are distributed in an upper and lower manner.

[0015] Preferably, the length of the rotating barrel is less than the distance between the two rotating discs, and the engaging teeth two are engaged with the engaging teeth one.

[0016] Preferably, the inner wall of the mounting groove is fixedly provided with a gas-liquid treatment box and a conveying box, and the conveying box is fixedly connected with the lower end of the conveying pipe and is in internal communication.

[0017] Compared with the prior art, the horizontal well tubing corrosion-resistant testing device has the following beneficial effects:

[0018] The horizontal well tubing corrosion-resistant testing device has the following beneficial effects:

[0019] The horizontal well tubing corrosion-resistant testing device has the following beneficial effects:

[0020] The horizontal well tubing corrosion-resistant testing device has the following beneficial effects:

[0021] The horizontal well tubing corrosion-resistant testing device has the following beneficial effects:

[0022] The horizontal well tubing corrosion-resistant testing device has the following beneficial effects:

[0023] The horizontal well tubing corrosion-resistant testing device has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The horizontal well tubing corrosion-resistant testing device has the following beneficial effects:

[0025] Figure 2 The horizontal well tubing corrosion-resistant testing device has the following beneficial effects:

[0026] Figure 3 The horizontal well tubing corrosion-resistant testing device has the following beneficial effects:

[0027] Figure 4 Rear view structure schematic diagram of a horizontal well oil pipe corrosion-resistant testing device according to the present application;

[0028] Figure 5 Stretching mechanism structure schematic diagram of a horizontal well oil pipe corrosion-resistant testing device according to the present application;

[0029] Figure 6 Enlarged schematic diagram of structure at B of a horizontal well oil pipe corrosion-resistant testing device according to the present application;

[0030] Figure 7 Enlarged schematic diagram of structure at C of a horizontal well oil pipe corrosion-resistant testing device according to the present application;

[0031] Figure 8 Weighing mechanism structure schematic diagram of a horizontal well oil pipe corrosion-resistant testing device according to the present application;

[0032] Figure 9 Sectional structure schematic diagram of a circulating mechanism of a horizontal well oil pipe corrosion-resistant testing device according to the present application;

[0033] Figure 10 Enlarged schematic diagram of structure at D of a horizontal well oil pipe corrosion-resistant testing device according to the present application;

[0034] Figure 11 Enlarged schematic diagram of structure at E of a horizontal well oil pipe corrosion-resistant testing device according to the present application;

[0035] Figure 12 Circulating mechanism structure schematic diagram of a horizontal well oil pipe corrosion-resistant testing device according to the present application;

[0036] Figure 13 Enlarged schematic diagram of structure at F of a horizontal well oil pipe corrosion-resistant testing device according to the present application;

[0037] Figure 14 Enlarged schematic diagram of structure at G of a horizontal well oil pipe corrosion-resistant testing device according to the present application.

[0038] In the diagram: 1. Test body; 2. Tensile mechanism; 3. Weighing mechanism; 4. Circulation mechanism; 5. Gas-liquid treatment box; 6. Sealing mechanism; 7. Conveyor box; 8. Mounting slot; 9. Motor; 10. PLC control module; 20. Fixing plate one; 21. Fixing plate two; 22. Electric slide rail one; 23. Electric slide rail two; 24. Diversion chamber; 25. Speed ​​change tube; 26. Sealing ring; 27. Anti-slip strip; 28. Centralized conveying pipe; 31. Fixing frame; 32. Weighing sensor; 33. Weighing platform ; 40. Circulation chamber; 41. Support block; 42. Rotating rod; 43. Conveying pipe; 44. Drive wheel; 45. Turntable; 46. Thread; 47. Fixing block; 48. Spring; 49. Sliding rod; 410. Moving cylinder; 411. Magnet; 412. Moving block; 413. Rotating cylinder; 414. First spring; 415. Limiting groove; 416. Meshing tooth one; 417. Meshing tooth two; 418. Limiting ball; 419. Slide groove; 61. Second spring; 62. Telescopic rod; 63. Sealing block. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0040] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] Example: A corrosion resistance testing device for horizontal well tubing, such as Figure 1 - Figure 14 As shown, it includes a test body 1 and a weighing mechanism 3 fixedly connected to the upper surface of the test body 1. A tensioning mechanism 2 is provided inside the test body 1 near the top. An installation groove 8 is provided on the rear side of the test body 1 below the tensioning mechanism 2. A circulation mechanism 4 is provided inside the installation groove 8. A motor 9 is provided on one side of the circulation mechanism 4. A PLC control module 10 is fixedly installed on one side surface of the test body 1.

[0042] The circulating mechanism 4 comprises a circulating bin 40, and a driving wheel 44 arranged in one side of the circulating bin 40, the driving wheel 44 is connected with two symmetrical rotating discs 45, the opposite inner sides of the two rotating discs 45 are fixedly provided with engagement teeth one 416, a rotating cylinder 413 is arranged between the two rotating discs 45, the two ends of the rotating cylinder 413 are provided with engagement teeth two 417, a rotating rod 42 is fixedly and penetratingly arranged in the rotating cylinder 413, a screw thread 46 is arranged on the middle part of the rotating rod 42, two symmetrical fixed blocks 47 are rotatably connected with the rotating rod 42 at the two ends of the screw thread 46, springs 48 are fixedly arranged on the opposite sides of the two fixed blocks 47, a moving block 412 is threadedly connected with the screw thread 46, a magnet 411 is fixedly connected with one end of the moving block 412, a moving cylinder 410 is rotatably connected with the end of the rotating rod 42, a limiting groove 415 is arranged on the periphery of the moving cylinder 410, a supporting block 41 is slidably connected with the limiting groove 415, a first spring 414 is arranged in the supporting block 41, and a limiting ball 418 is rotatably connected with one end of the first spring 414.

[0043] The connection and control of the PLC control module 10 and the motor 9 are prior art, which will not be repeated here. The upper end of the weighing sensor 32 is fixedly connected with a horizontal plate, and the fixed frame 31 is fixedly arranged on the horizontal plate. The weighing sensor 32 is prior art, which will not be repeated here. The conveying pipes 43 are arranged in sequence. The weight loss method is to accurately weigh the sample before and after the test, calculate the weight loss per unit area, and convert it into the corrosion rate. The principle is that the essence of metal corrosion is anodic dissolution, and the dissolved metal ions enter the medium, resulting in a decrease in the weight of the sample. The weight loss is proportional to the corrosion rate. The inner surface area of the horizontal well pipe exposed to the corrosive environment is calculated by the formula: inner surface area = inner wall circumference x effective length. The largest sealing ring 26 occupies a certain area, so the outer surface area of the sealing ring 26 needs to be subtracted. The outer surface area of the sealing ring 26 is calculated by the formula: annular outer surface area = outer circumference x axial length. The conveying box 7 is sequentially filled with carbon dioxide gas, hydrogen sulfide gas, carbon dioxide and hydrogen sulfide mixed gas, and high chloride salt water, etc. through a plurality of conveying pipes 43. The above-mentioned gases and liquids are pumped by a magnetic drive centrifugal pump and a fluorine-lined plastic pump. The magnetic drive centrifugal pump and the fluorine-lined plastic pump are prior art, which will not be repeated here and are not shown in the figure. The driving wheel 44 is provided with a groove on the periphery, and the rotating disc 45 is fixedly provided with a push rod on the periphery. The driving wheel 44 and the rotating disc 45 are connected by the groove and the push rod.

[0044] When the horizontal well tubing is tested, first, the produced horizontal well tubing is randomly cut into two sections, and the cutting end is a horizontal and vertical smooth cutting surface. Then, the exposed area of the horizontal well tubing in the corrosion environment is measured manually using a measuring scale, and then recorded. Then, the horizontal well tubing to be tested is placed on the weighing mechanism 3 in turn by manual taking, and then the weight of the initial horizontal well tubing before testing is recorded.

[0045] After the horizontal well tubing is weighed, the horizontal well tubing is placed on the stretching mechanism 2 by manual taking. The horizontal well tubing should be taken manually to avoid direct contact with the hands, thereby reducing the corrosion of sweat or other corrosive substances on the hands on the horizontal well tubing, thereby increasing the detection accuracy of the device. At the same time, the horizontal well tubing should be avoided from being knocked during the taking process to cause the surface to be uneven, resulting in the inability to achieve clamping when clamping the horizontal well tubing. Then, the cover is closed, and the stretching mechanism 2 is started. The stretching of the stretching mechanism 2 can test the horizontal well tubing. During the testing process of the stretching mechanism 2, the horizontal well tubing can be connected with the variable speed pipe 25. At this time, the start switch on the operation table is turned on, and the motor 9 is controlled by the PLC control module 10.

[0046] As Figure 14As shown, the motor 9 starts to start, the rotation of the motor 9 output shaft can drive the driving wheel 44, the initial state of rotation is the meshing tooth two 417 on the left side of the rotating drum 413 and the meshing tooth one 416 on the rotating disc 45 on the left side of the rotating drum 413 meshing rotation, the rotation of the driving wheel 44 can rotate the rotating disc 45, then the meshing tooth one 416 starts to rotate, the meshing tooth one 416 drives the meshing tooth two 417, so that the meshing tooth two 417 rotates the rotating drum 413, when the rotating drum 413 starts to rotate, the rotating rod 42 can rotate under the support of the fixed block 47, the fixed block 47 can ensure the stable rotation of the rotating rod 42, at the same time, the moving block 412 cooperates with the screw 46 to move on the rotating rod 42, when the moving block 412 moves to the lower side of the conveying pipe 43, the magnet 411 on the rotating rod 42 can attract the plugging mechanism 6, the plugging mechanism 6 attracted by the magnet 411 moves towards the magnet 411, at the same time, the plugging mechanism 6 releases the plugging state of the conveying pipe 43, at this time, the carbon dioxide gas flows into the stretching mechanism 2 through the conveying pipe 43, and enters the horizontal well pipe through the acceleration of the stretching mechanism 2, at the same time, the PLC control module 10 controls the motor 9 to stop running, so that the rotating rod 42 stops rotating at this time, and the moving block 412 also stops rotating, the carbon dioxide gas continues to enter the horizontal well pipe, after the motor 9 stops for a period of time, the PLC control module 10 controls the motor 9 again, starts the motor 9, the moving block 412 starts to move, and the distance between the magnet 411 and the plugging mechanism 6 starts to increase, the plugging mechanism 6 loses the attraction and starts to return to the initial position, at the same time, the conveying pipe 43 is again plugged by the plugging mechanism 6, and the carbon dioxide gas stops flowing, when the moving block 412 drives the magnet 411 to move to the lower side of another conveying pipe 43, the magnet 411 again attracts the plugging mechanism 6 in the conveying pipe 43, the plugging mechanism 6 again releases the plugging of the conveying pipe 43, at this time, the hydrogen sulfide gas starts to flow, the conveying pipe 43 is a plurality of carbon dioxide gas conveying pipes, hydrogen sulfide gas conveying pipes, carbon dioxide and hydrogen sulfide mixed gas conveying pipes, high chloride salt water conveying pipes and the like, as described above, the moving block 412 can attract the plugging mechanism 6 in the conveying pipe 43 in turn, so that the above-mentioned various gases and high chloride salt water and the like liquid can be tested in sequence in one device, compared with the separate test mode, the plurality of conveying pipes 43 are used for concentrated test in sequence, which can achieve the effect of high test efficiency, and the timing start time of the motor 9 controlled by the PLC control module 10 can measure the corrosion severity of one gas or liquid to the horizontal well pipe respectively, and the corrosion prevention scheme can be made according to the corrosion condition, which can achieve the effect of accurate test, at this time, when the moving block 412 moves to one side of the fixed block 47 and contacts the spring 48, the moving block 412 can extrude the spring 48, the spring 48 starts to contract, and the extrusion force is transmitted to the rotating rod 42 through the moving block 412, the extrusion force is converted into thrust,The rotating rod 42 can transmit the thrust force to the moving cylinder 410, and through the force borne by the moving cylinder 410, the moving cylinder 410 can move, while the limiting groove 415 extrudes the limiting ball 418, the limiting ball 418 is extruded to move close to the first spring 414, the first spring 414 performs a contraction action, the limiting ball 418 moves to the outside of the limiting groove 415, so that the moving cylinder 410 drives the rotating rod 42 to move, then another limiting groove 415 can move to the limiting ball 418, the first spring 414 and the limiting ball 418 lose the extrusion force of the moving cylinder 410 on them, the first spring 414 performs an extension action, the limiting ball 418 is pushed and enters the inside of the limiting groove 415, so as to complete the position limitation of the rotating rod 42, at the same time, the moving rotating rod 42 drives the rotating cylinder 413, and then the other meshing teeth two 417 on the rotating cylinder 413 are engaged with the meshing teeth one 416 on the rotating disc 45 on the other side, through the rotation of the rotating disc 45, the rotating rod 42 starts to reverse, and at the same time can make the moving block 412 move reversely, and the reverse movement of the moving block 412 reaches the lower side of the conveying pipe 43 in turn again, so as to attract the plugging mechanism 6 again, because the corrosion of the horizontal well tubing is not a simple superposition of single medium action, but a complex process under the alternating action of different media, therefore, the cyclic gas and high-chlorine salt water conversion test can be closer to the use and environment of the horizontal well tubing, so that the corrosion resistance test of the horizontal well tubing can be accurately evaluated and accurate data can be obtained, and the cyclic test can accelerate the expansion of potential defects and expose the corrosion risk in advance, therefore, the cyclic test can achieve the effects of high test efficiency, cyclic test, synchronous test and accurate test precision, when the test is completed, the horizontal well tubing is taken out and placed on the fixing frame 31 in turn, through the weight comparison before and after the test, then calculation can be carried out, so as to obtain the corrosion resistance of the horizontal well tubing.

[0047] As shown in Figure 1 - Figure 14 The stretching mechanism 2 includes two fixed plates one 20 which are symmetrically distributed, and an electric sliding rail one 22 fixedly connected with the lower ends of the two fixed plates one 20, one side of the fixed plate one 20 is provided with two fixed plates two 21 which are symmetrically distributed, the lower ends of the two fixed plates two 21 are fixedly connected with an electric sliding rail two 23, the inner walls of the upper halves of the fixed plate one 20 and the fixed plate two 21 are fixedly installed with anti-skid strips 27, a shunt bin 24 is arranged between the two fixed plates two 21, taper-shaped speed change pipes 25 are fixedly installed on the surfaces of the two sides of the shunt bin 24, sealing rings 26 are fixedly installed on the circumferences of the speed change pipes 25, and a concentrated conveying pipe 28 is fixedly installed on one side of the shunt bin 24.

[0048] The electric slide rail 22 and the electric slide rail 23 are two and symmetrically distributed, the moving speed of the electric slide rail 23 is greater than that of the electric slide rail 22, the sealing ring 26 is several, the anti-skid strip 27 is several, one side of the fixed plate 20 is provided with a corrugated pipe, the corrugated pipe is made of nickel-copper alloy material, and one side of the upper end of the fixed plate 20 is openable and the other side is fixed. The fixed side is fixedly connected with the corrugated pipe, and the corrugated pipe is connected with the horizontal well oil pipe. There is a sealing gasket at the connection position of the corrugated pipe and the horizontal well oil pipe, so that the sealing property can be ensured. The open side is fixed through a nut, so that the sliding or non-sealing condition can not occur in the stretching process. The sealing gasket is a prior art and will not be described here. The concentrated conveying pipe 28 is in communication with the conveying pipe 43 inside, so that the concentrated testing effect can be achieved.

[0049] The sealing ring 26 is made of ceramic material.

[0050] The horizontal well oil pipe is fixed on the fixed plate 20 and the fixed plate 21, and can be moved by the movement of the electric slide rail 23 and the electric slide rail 22. Due to the difference in moving speed between the electric slide rail 23 and the electric slide rail 22, the horizontal well oil pipe body can be stretched, so that the stretching test can be completed. At the same time, one end of the horizontal well oil pipe is in contact with the variable speed pipe 25, the sealing ring 26 can enter the inside of the horizontal well oil pipe, and the sealing ring 26 is in close contact with the inner wall of the horizontal well oil pipe. The taper of the variable speed pipe 25 can accelerate the above-mentioned gas or high-chlorine salt water reaching this position, so that the above-mentioned gas and high-chlorine salt water with different flow rates in the use process of the horizontal well oil pipe can be simulated. At the same time, due to the existence of the stepped gap at the connection position of the variable speed pipe 25 and the horizontal well oil pipe, the high-chlorine salt water or the above-mentioned gas reaching this position will be disturbed to cause the occurrence of turbulence, so that the real use condition of the horizontal well oil pipe can be simulated further, the testing precision effect can be achieved, and the sealing ring 26 can adapt to the curved surface structure of the tapered variable speed pipe 25, so that the sealing ring 26 is closely attached to the contact surface. The first sealing ring 26 bears the main impact pressure, and the subsequent sealing ring 26 bears the residual pressure, so that the effect of dispersing the sealing pressure can be achieved, the sealing effect in the testing process can be achieved, and the testing stability and safety effect can be achieved. The multi-stage and sequentially arranged anti-skid strips 27 can prevent the pipe from slipping, ensure the stability and precision of the stretching process, and also can protect the surface of the pipe to avoid damage during clamping, so that the testing process stability effect can be achieved.

[0051] As Figure 1 - Figure 14As shown, the magnet 411 is provided above the conveying pipe 43, the conveying pipe 43 is internally provided with a blocking mechanism 6, the blocking mechanism 6 comprises a second spring 61 and a telescopic rod 62 arranged in the second spring 61, the upper ends of the second spring 61 and the telescopic rod 62 are fixedly connected with a blocking block 63, the lower ends of the second spring 61 and the telescopic rod 62 are fixedly connected with the inner wall of the conveying pipe 43, and the conveying pipe 43 is in communication with the inside of the centralized conveying pipe 28.

[0052] The magnet is fixedly installed on the lower side of the blocking block 63, compared with the mode that the whole blocking block 63 is a magnet, the mode of arranging the magnet on the lower side of the blocking block 63 can avoid that the impurities in the high-chloride salt water are adsorbed by the magnet to cause blockage and lead to the operation jam of the blocking mechanism 6, therefore the whole blocking block 63 cannot be a magnet, only the lower side is a magnet, and meanwhile the accurate attraction of the magnet 411 can be ensured, the conveying pipe 43 is U-shaped, and the second spring 61 and the telescopic rod 62 are located at one end of the conveying pipe 43 close to the circulating mechanism 4.

[0053] The magnet on the lower side of the blocking block 63 is attracted to the magnet 411 and can approach the magnet 411, the pulling force generated by the attraction force can extrude the telescopic rod 62, so that the second spring 61 performs a compression action, and the telescopic rod 62 performs a compression action, and the blocking block 63 enters the inside of the lower side of the conveying pipe 43, when the magnet 411 is away from the blocking block 63, the attraction force of the magnet 411 disappears, the second spring 61 performs an unfolding action, and the blocking block 63 can enter the inside of the conveying pipe 43 again to block the conveying pipe 43, the arrangement of the blocking block 63 can control the conveying of the high-chloride salt water or gas of the conveying pipe 43, and the accuracy of the conveying of the gas or the high-chloride salt water during the test is ensured.

[0054] As shown in the figure, Figure 1 Figure 14 The rotating rod 42 is rotatably connected with the inner wall of the rotating disc 45, the supporting blocks 41 are two and are symmetrically distributed, one end of the rotating rod 42 extends to the inside of the supporting block 41, and the other end of the rotating rod 42 extends to the outside of the other supporting block 41.

[0055] The surface on one side of the driving wheel 44 is fixedly connected with the output shaft of the motor 9, and the motor 9 is fixedly connected with the outside of the test main body 1.

[0056] The sliding grooves 419 are arranged on the opposite sides of the inner wall of the circulating bin 40, the sliding rods 49 are fixedly installed on the two sides of the moving block 412, one end of the sliding rod 49 is slidably connected with the inner wall of the sliding groove 419, and the sliding rod 49 is two groups, each group has two sliding rods.

[0057] The limiting grooves 415 are two groups, each group has two limiting grooves, the first springs 414 and the limiting balls 418 are two and are arranged in an upper-lower distribution mode.

[0058] ​The rotating disc 45 is rotatably connected to one side of the supporting block 41, and the other rotating disc 45 is rotatably connected to the inner wall of the circulating bin 40, and the inner walls of the two rotating discs 45 are rotatably connected to the circumferential side of the rotating rod 42, so that the rotating rod 42 can move and rotate, at the same time, the sliding rods 49 on both sides of the moving block 412 are in sliding connection with the sliding grooves 419 of the circulating bin 40, which can support and limit the movement of the moving block 412, avoid the rotation of the moving block 412, cause the unstable operation of the plugging mechanism 6, and the symmetrically distributed sliding rods 49 can balance the lateral force of the moving block 412 during movement, prevent the inclination or deviation of the moving block 412, ensure the smooth sliding of the moving block 412 along the preset track, and ensure the accuracy during the reciprocating movement of the circulating test.

[0059] As shown in Figure 1 - Figure 14 The weighing mechanism 3 includes a weighing table 33 and a weighing sensor 32 fixedly connected to the upper surface of the weighing table 33, and the upper end of the weighing sensor 32 is provided with a fixing frame 31.

[0060] The to-be-tested horizontal well oil pipe is placed on the fixing frame 31 in an artificial taking manner, at this time, the weight of the horizontal well oil pipe can be displayed on the display screen on the weighing table 33 after the weighing sensor 32 is subjected to pressure, and compared with the traditional mechanical lever-type weighing mechanism, the traditional mechanical lever-type weighing mechanism will be worn during use, thus causing inaccurate weighing data, and the weighing mechanism with a mechanical lever structure will also cause inaccurate weighing data due to vibration and corrosion, therefore, the setting of the weighing sensor 32 can achieve accurate measurement and stable operation.

[0061] As shown in Figure 1 - Figure 14 The length of the rotating drum 413 is less than the distance between the two rotating discs 45, and the meshing teeth two 417 are meshingly connected with the meshing teeth one 416.

[0062] The length of the rotating drum 413 can ensure the sliding space of itself between the two rotating discs 45, and can ensure that one meshing tooth two 417 and one meshing tooth one 416 are meshed, and the other meshing tooth two 417 and the meshing tooth one 416 are kept at a certain distance, so that the mis-meshing does not occur, thereby ensuring the accurate rotating direction of the rotating rod 42.

[0063] As shown in Figure 1 - Figure 14 Figure 1 Figure 14 Figure 1 Figure 14 Figure 1 Figure 14 Figure 1 Figure 14 Figure 1 Figure 14 Figure 1 Figure 14 Figure 1 Figure 14 Figure 1 The gas-liquid treatment box 5 and the conveying box 7 are fixedly installed on the inner wall of the mounting groove 8, and the conveying box 7 is fixedly connected with the lower end of the conveying pipe 43 and is in internal communication.

[0064] The gas-liquid treatment box 5 can collect and store the tested gas or high-chlorine salt water, and the conveying box 7 can provide the required gas and high-chlorine salt water for the test.

[0065] Working principle: when carrying out horizontal well tubing corrosion resistance test, first, the area of horizontal well tubing is measured, then the horizontal well tubing is placed on the fixed frame 31, the weight of the horizontal well tubing can be obtained through the action of the weighing sensor 32, then the horizontal well tubing is placed on the fixed plate one 20 and the fixed plate two 21, the fixed plate one 20 and the electric sliding rail one 22 start to run, the variable speed pipe 25 enters the inside of the horizontal well tubing, at this time, the PLC control module 10 controls the motor 9 to run, the driving wheel 44 rotates, the rotating disc 45 rotates, the rotating cylinder 413 rotates, the rotating rod 42 rotates, the moving block 412 moves, the magnet 411 attracts the blocking block 63, the telescopic rod 62 contracts, the second spring 61 contracts, the blocking block 63 moves, the blocking block 63 unblocks the conveying pipe 43, the PLC control module 10 controls the motor 9 to stop running, the moving block 412 stops moving, after a period of time, the PLC control module 10 controls the motor 9 to continue to rotate, the moving block 412 moves again, the magnet 411 moves away from the blocking block 63, the telescopic rod 62 expands, the second spring 61 expands, the blocking block 63 moves, the blocking block 63 blocks the conveying pipe 43 again, when the conveying pipe 43 contacts with the spring 48, the spring 48 contracts, the conveying pipe 43 stops moving, the rotating rod 42 moves, the limiting ball 418 moves out of the limiting groove 415, the first spring 414 contracts, the limiting ball 418 enters another limiting groove 415, the first spring 414 expands, the meshing tooth two 417 meshes with another meshing tooth one 416, the rotating rod 42 reverses, so as to complete reciprocating movement and cycle test.

[0066] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent substitution or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A horizontal well tubing corrosion resistance testing device, comprising a testing main body (1), and a weighing mechanism (3) fixedly connected with the upper surface of the testing main body (1), characterized in that, The testing main body (1) is provided with a stretching mechanism (2) near the upper side, a mounting groove (8) is arranged below the stretching mechanism (2) on the rear side of the testing main body (1), a circulating mechanism (4) is arranged in the mounting groove (8), a motor (9) is arranged on one side of the circulating mechanism (4), and a PLC control module (10) is fixedly installed on the surface of one side of the testing main body (1); The circulating mechanism (4) comprises a circulating bin (40) and a driving wheel (44) arranged on one side in the circulating bin (40), the driving wheel (44) is connected with two symmetrical rotating discs (45) in a meshing mode, the opposite inner sides of the two rotating discs (45) are fixedly provided with meshing teeth (416), a rotating drum (413) is arranged between the two rotating discs (45), the rotating drum (413) is provided with meshing teeth (417) at both ends, a rotating rod (42) is fixedly and penetratively arranged in the rotating drum (413), a screw thread (46) is arranged on the middle part of the rotating rod (42), two symmetrical fixed blocks (47) are rotatably connected to the rotating rod (42) on the two ends of the screw thread (46), springs (48) are fixedly arranged on the opposite sides of the two fixed blocks (47), a moving block (412) is screw-connected to the surface of the screw thread (46), a magnet (411) is fixedly connected to one end of the moving block (412), a moving drum (410) is rotatably connected to the end of the rotating rod (42), a limiting groove (415) is arranged on the surface of the moving drum (410), a supporting block (41) is slidably connected to the limiting groove (415), and the supporting block (41) is provided with a first spring (414) arranged therein, a limiting ball (418) is rotatably connected to one end of the first spring (414), and the limiting ball (418) is slidably connected to the limiting groove (415); The stretching mechanism (2) comprises two symmetrical fixed plates (20) and electric sliding rails (22) fixedly connected to the lower ends of the two fixed plates (20), the fixed plates (20) are provided with two symmetrical fixed plates (21) on one side, and a shunt bin (24) is arranged between the two fixed plates (21). A conveying pipe (43) is arranged above the magnet (411), a blocking mechanism (6) is arranged in the conveying pipe (43), the blocking mechanism (6) comprises a second spring (61) and a telescopic rod (62) arranged in the second spring (61), blocking blocks (63) are fixedly connected to the upper ends of the second spring (61) and the telescopic rod (62), the lower ends of the second spring (61) and the telescopic rod (62) are fixedly connected to the inner wall of the conveying pipe (43), and the conveying pipe (43) is in communication with the inside of the concentrated conveying pipe (28); The lower side of the blocking block (63) is fixedly provided with a magnet.

2. The horizontal well tubing corrosion resistant testing device of claim 1, wherein, Two lower ends of the second fixed plate 21 are fixedly connected with electric sliding rails 23, antiskid strips 27 are fixedly installed on the inner walls of upper halves of the first fixed plate 20 and the second fixed plate 21, conical speed-changing pipes 25 are fixedly installed on the surfaces of both sides of the shunt bin 24, and sealing rings 26 are fixedly installed on the circumferences of the speed-changing pipes 25.

3. The horizontal well tubing corrosion resistant testing device of claim 1, wherein, The rotating rod 42 is rotationally connected with the inner wall of the rotating disc 45, the support blocks 41 are two and symmetrically distributed, one end of the rotating rod 42 extends to the inside of the support block 41, and the other end of the rotating rod 42 extends to the outside of the other support block 41.

4. The horizontal well tubing corrosion resistant testing device of claim 1, wherein, The weighing mechanism 3 comprises a weighing table 33 and a weighing sensor 32 fixedly connected with the upper surface of the weighing table 33, and a fixing frame 31 is arranged at the upper end of the weighing sensor 32.

5. The horizontal well tubing corrosion resistant testing device of claim 1, wherein, One side surface of the driving wheel 44 is fixedly connected with the output shaft of the motor 9, and the motor 9 is fixedly connected with the outside of the test main body 1.

6. The horizontal well tubing corrosion resistant testing device of claim 1, wherein, The inner walls of the circulating bin 40 are provided with two sliding grooves 419, sliding rods 49 are fixedly installed on the two sides of the moving block 412, one end of the sliding rod 49 is slidably connected with the inner wall of the sliding groove 419, and the sliding rod 49 is two groups, each group having two sliding rods.

7. The horizontal well tubing corrosion resistant testing device of claim 1, wherein, The limiting grooves 415 are two groups, each group having two limiting grooves, and the first springs 414 and the limiting balls 418 are two and symmetrically distributed.

8. The horizontal well tubing corrosion resistant testing device of claim 1, wherein, The length of the rotating drum 413 is less than the distance between the two rotating discs 45, and the engaging teeth two 417 are in meshing connection with the engaging teeth one 416.

9. The horizontal well tubing corrosion resistant testing device of claim 1, wherein, The inner walls of the mounting grooves 8 are fixedly installed with a gas-liquid treatment box 5 and a conveying box 7, the conveying box 7 is fixedly connected with the lower end of the conveying pipe 43 and communicates with the conveying pipe 43.

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