A downhole tool rotation working condition simulation test bench

Abstract

The application discloses a kind of downhole tool rotation working condition simulation test platform, including test mechanism, the test mechanism includes bottom plate, the bottom plate is provided with measurement while drilling tool above, the bottom plate is provided with simulation mechanism above;The simulation mechanism includes soil layer simulation unit, the soil layer simulation unit is set to the outside of measurement while drilling tool, the soil layer simulation unit is used to simulate the soil layer in the actual use process of measurement while drilling tool, the simulation mechanism includes pressure simulation unit, the pressure simulation unit is set below measurement while drilling tool, the pressure simulation unit is used to simulate the pressure actually received when measurement while drilling tool drills, play to let simulation test platform when using, can more truly simulate different operating environment in well, improve subsequent measurement while drilling tool in instrument downhole operation reliability, increase the role of simulation test performance of downhole tool rotation working condition simulation test platform simulation test.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of simulation test of downhole tools, and particularly to a simulation test platform for rotating working conditions of downhole tools. BACKGROUND

[0002] In drilling operations, in order to better explore the downhole conditions and collect various data in the well, sufficient preparation is needed for subsequent construction work, and thus it is necessary to use a measurement-while-drilling tool into the instrument and other downhole tools into the drill pipe together into the downhole during drilling. Since the downhole is at a deep distance from the ground, in order to ensure that the electronic components and sensors of the measurement-while-drilling tool into the instrument can be used normally, it is necessary to simulate the downhole operation working conditions of the measurement-while-drilling tool into the instrument, test the working state of the measurement-while-drilling tool into the instrument through simulation of the downhole environment, and improve the reliability of the measurement-while-drilling tool into the instrument in actual operation in the downhole.

[0003] The existing simulation test platform for rotating working conditions of downhole tools has a single function in use, and can only perform simple data testing, such as temperature and pressure, on the measurement-while-drilling tool into the instrument and other downhole tools, and cannot more realistically simulate the downhole operation environment, so that the simulation test platform for rotating working conditions of downhole tools cannot better test the working state of the measurement-while-drilling tool into the instrument and other downhole tools in the downhole, thereby affecting the simulation test data accuracy of the measurement-while-drilling tool into the instrument and other downhole tools, leading to the measurement-while-drilling tool into the instrument in the downhole operation prone to failure, and resulting in the simulation test performance of the simulation test platform for rotating working conditions of downhole tools being insufficient. SUMMARY

[0004] The present application aims to provide a simulation test platform for rotating working conditions of downhole tools to solve the above problems.

[0005] The present application is achieved by the following technical solutions:

[0006] A simulation test platform for rotating working conditions of downhole tools, comprising a test mechanism, the test mechanism comprising a bottom plate, a measurement-while-drilling tool being arranged above the bottom plate, and a simulation mechanism being arranged above the bottom plate.

[0007] The simulation mechanism comprises a soil layer simulation unit, the soil layer simulation unit being arranged outside the measurement-while-drilling tool, and the soil layer simulation unit being used for simulating the soil layer in the actual use process of the measurement-while-drilling tool.

[0008] The soil layer simulation unit comprises a simulation box arranged above the base plate, the MWD tool is arranged inside the simulation box, the simulation box is filled with a mudstone layer, a sandstone layer and a shale layer respectively, the mudstone layer, the sandstone layer and the shale layer are in contact with the MWD tool, the two side surfaces of the simulation box are fixedly connected with three fixing frames, the inner wall of each fixing frame is fixedly connected with a first hydraulic rod, the telescopic end of each first hydraulic rod is fixedly connected with a pushing frame, each pushing frame is slidably connected inside the simulation box, a pushing plate is slidably connected inside each pushing frame, the mudstone layer, the sandstone layer and the shale layer are in contact with one side surface of the pushing plate, the inner wall of each pushing frame is fixedly connected with a plurality of buffer springs, the other ends of the plurality of buffer springs are fixedly connected with one side surface of the pushing plate, the inner wall of each pushing frame is fixedly connected with a first pressure sensor, and the detection end of each first pressure sensor is in contact with one side surface of the pushing plate, so that the soil layer simulation unit can simulate a soil layer with a large sand content, a dense sandstone layer and a soil layer with a large amount of gravel in the simulation box, so that the MWD tool can simulate different soil layer environments encountered in actual use through the drilling of the MWD tool, and the running condition of the electronic module of the MWD tool in the rotation work in different soil layer environments can be tested.

[0009] One side surface of each pushing frame is fixedly connected with a plurality of sliding rods, and the plurality of sliding rods are slidably connected inside the fixing frame, so that the sliding rods can slide inside the fixing frame to increase the stability of the left and right movement of the pushing frame and prevent the pushing frame from deviating to affect the pushing effect.

[0010] The outer surface of the telescopic end of each first hydraulic rod is fixedly connected with a reinforcing ring, and one side surface of each reinforcing ring is fixedly connected with one side surface of the pushing frame, so that the reinforcing ring can increase the connection stability between the first hydraulic rod and the pushing frame, and the connection between the first hydraulic rod and the pushing frame is not easy to loosen.

[0011] The simulation mechanism comprises a pressure simulation unit arranged below the measurement-while-drilling tool, the pressure simulation unit is used for simulating the pressure actually borne by the measurement-while-drilling tool when the measurement-while-drilling tool is rotated, and the pressure simulation unit comprises a support frame, an upper surface of the support frame is fixedly connected with a bottom surface of a simulation box, an inner wall of the support frame is fixedly connected with a second hydraulic rod, an extension end of the second hydraulic rod is fixedly connected with a connecting disc, an upper surface of the connecting disc is fixedly connected with an auxiliary spring, a top end of the auxiliary spring is fixedly connected with a second pressure sensor, an upper surface of the second pressure sensor is fixedly connected with a connecting frame, inner walls of two rotating bearings fixedly connected with the connecting frame are fixedly connected with a pressure-bearing seat in common, the pressure-bearing seat is rotatably connected in the simulation box, a bottom end of the measurement-while-drilling tool is in contact with an inner bottom wall of the pressure-bearing seat, through the pressure simulation unit, the pressure borne by the bottom end of the measurement-while-drilling tool can be detected, and an upward reverse pressure can be provided to the bottom end of the measurement-while-drilling tool without affecting the rotation of the measurement-while-drilling tool, so as to simulate the working state of an internal electronic module of the measurement-while-drilling tool when the bottom end of the measurement-while-drilling tool is subjected to a stronger pressure, thereby the working condition of the measurement-while-drilling tool in actual work can be more truly simulated, the precision of simulation test data collected by a tester is further improved, and the testing performance of the downhole tool rotation working condition simulation test bench is improved.

[0012] The auxiliary spring is internally provided with a first extension rod, a bottom end of the first extension rod is fixedly connected with an upper surface of the connecting disc, and an extension end of the first extension rod is fixedly connected with a bottom surface of the second pressure sensor, the first extension rod can prevent the auxiliary spring from being deviated, the extension stability of the auxiliary spring is improved, and the cooperation effect of the auxiliary spring with the connecting disc and the second pressure sensor is increased.

[0013] Two sliding blocks are fixedly connected with an outer surface of the connecting frame, the two sliding blocks are slidingly connected in the support frame, an outer surface of the pressure-bearing seat is sleeved with a sealing ring, and an upper surface of the sealing ring is fixedly connected with the bottom surface of the simulation box, through the sliding of the sliding blocks in the support frame, the left-right inclination of the connecting frame can be prevented while the up-down movement of the connecting frame is not affected, the use reliability of the connecting frame is ensured, and the sealing ring can prevent the gap between the pressure-bearing seat and the simulation box from leaking.

[0014] The simulation mechanism further comprises a tilting simulation unit arranged above the bottom plate, the tilting simulation unit being used for simulating tilting of the measurement-while-drilling tool occurring in the well, the tilting simulation unit comprising a limiting ring arranged above the bottom plate, an outer surface of the simulation box being fixedly connected with a positioning frame, an inner wall of the limiting ring being fixedly connected with a plurality of first cross universal joints, an outer surface of the positioning frame being fixedly connected with a plurality of second cross universal joints, one end of each of the first cross universal joints being fixedly connected with an electric push rod, a telescopic end of each of the electric push rods being fixedly connected with one end of a second cross universal joint, a bottom surface of the limiting ring being fixedly connected with four supporting plates, a bottom surface of each of the supporting plates being fixedly connected with an upper surface of the bottom plate, a bottom surface of the simulation box being fixedly connected with a stabilizing frame, a bottom portion of the stabilizing frame being rotatably connected with a rotating ball, an outer surface of the rotating ball being fixedly connected with a fixing column, a bottom end of the fixing column being fixedly connected with the upper surface of the bottom plate, an outer surface of the stabilizing frame being fixedly connected with four third cross universal joints, one side of each of the supporting plates being fixedly connected with a fourth cross universal joint, one end of each of the third cross universal joints being fixedly connected with a strong spring, the other end of each of the strong springs being fixedly connected with one end of the fourth cross universal joint, through the tilting simulation unit, slight tilting of the measurement-while-drilling tool in the rotary drilling process can be caused, tilting of the measurement-while-drilling tool occurring in actual work in the well can be simulated, whether the built-in three-axis fluxgate magnetometer and accelerometer of the measurement-while-drilling tool can smoothly pass through the three-axis fluxgate magnetometer to collect earth magnetic field data can be tested, the spatial azimuth angle and the tilting angle of the measurement-while-drilling tool and other parameters can be calculated in real time by combining with three-axis accelerometer measurement of gravity field components, thereby rotary working condition simulation test of the measurement-while-drilling tool and other downhole tools can be more in line with actual use, and the simulation test work of the measurement-while-drilling tool and other downhole tools is more real and reliable.

[0015] One side of each of the supporting plates is fixedly connected with a reinforcing rib, a bottom surface of each of the reinforcing ribs is fixedly connected with the upper surface of the bottom plate, the reinforcing rib can increase the connection firmness of the supporting plate and the bottom plate, the supporting plate is not prone to tilting deformation in use, and the pressure bearing strength of the supporting plate is improved.

[0016] An outer surface of the fixing column is fixedly connected with a stabilizing ring, a bottom surface of the stabilizing ring is fixedly connected with the upper surface of the bottom plate, the stabilizing ring can increase the stability of the fixing column, the connection between the fixing column and the bottom plate is more closely and reliably, and the supporting stability of the fixing column to the rotating ball is ensured.

[0017] The interior of each strong spring is provided with a second telescopic rod, the telescopic end of each second telescopic rod is fixedly connected with one end of a fourth cross universal joint, the other end of each second telescopic rod is fixedly connected with one end of a third cross universal joint, and the second telescopic rod can make the strong spring and the third cross universal joint and the fourth cross universal joint more stable and integral.

[0018] The upper side of the soil layer simulation unit is provided with a rotating mechanism, the rotating mechanism is used in cooperation with the simulation mechanism, the rotating mechanism is used for driving the drilling measurement tool to drill downward, and the rotating mechanism comprises two third hydraulic rods, the bottom ends of the two third hydraulic rods are fixedly connected with the upper surface of the positioning frame, the telescopic ends of the two third hydraulic rods are fixedly connected with a moving frame, the interior of the moving frame is provided with a servo motor, the output end of the servo motor is fixedly connected with a first gear, the inner wall of the moving frame is fixedly connected with a limiting cylinder, the inner wall of the limiting cylinder is fixedly connected with auxiliary bearings, the inner walls of the inner rings of the two auxiliary bearings are fixedly connected with a connecting cylinder, the inner wall of the connecting cylinder is threadedly connected with the top end of the drilling measurement tool, the outer surface of the connecting cylinder is fixedly connected with a second gear, and the outer surface of the second gear is meshedly connected with the outer surface of the first gear.

[0019] The back surface of the servo motor is fixedly connected with a positioning seat, the back surface of the positioning seat is fixedly connected with the inner wall of the moving frame, the positioning seat can position the servo motor, and the servo motor can smoothly drive the first gear to rotate.

[0020] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0021] 1、The soil layer simulation unit can simulate the mudstone layer, the sandstone layer and the shale layer in the simulation box respectively, so that the drilling measurement tool can simulate different rock layer environments encountered in actual use, and the running conditions of the electronic module of the drilling measurement tool in the rotation work in different rock layer environments can be tested.

[0022] 2、The present application is provided with a pressure simulation unit, which can detect the pressure received by the bottom end of the measurement-while-drilling tool, and can provide the bottom end of the measurement-while-drilling tool with an upward reverse pressure without affecting the rotation of the measurement-while-drilling tool, so as to simulate the working state of the internal electronic module of the measurement-while-drilling tool when it receives strong pressure, thereby more truly simulating the working condition of the measurement-while-drilling tool in actual work, achieving the effect of further improving the simulation test data collection accuracy and improving the test performance of the downhole tool rotary working condition simulation test bench.

[0023] 3、The present application is provided with an inclination simulation unit, which can cause the measurement-while-drilling tool to slightly incline during the rotary drilling process, simulate the inclination of the measurement-while-drilling tool in actual work downhole, and test whether the built-in three-axis fluxgate magnetometer and accelerometer of the measurement-while-drilling tool can smoothly pass through the three-axis fluxgate magnetometer to collect earth magnetic field data, combine the three-axis accelerometer to measure the gravity field component, and real-time calculate the spatial azimuth angle and inclination angle of the measurement-while-drilling tool and other parameters, thereby more closely simulating the rotary working condition of the measurement-while-drilling tool and other downhole tools for actual use, making the simulation test work of the measurement-while-drilling tool and other downhole tools more real and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0024] The drawings described herein are used to provide further understanding of the embodiments of the present application, constitute a part of the present application, and do not constitute a limitation on the embodiments of the present application. In the drawings:

[0025] Figure 1 is a schematic diagram of the overall structure of the present application;

[0026] Figure 2 is a schematic diagram of the fixed frame and simulation box structure of the present application;

[0027] Figure 3 is a schematic diagram of the simulation box cross-section structure of the present application;

[0028] Figure 4 is a schematic diagram of the push frame cross-section structure of the present application;

[0029] Figure 5 is a schematic diagram of the support frame cross-section structure of the present application;

[0030] Figure 6 is a schematic diagram of the connection frame cross-section structure of the present application;

[0031] Figure 7 is a schematic diagram of the support plate and bottom plate structure of the present application;

[0032] Figure 8 is a schematic diagram of the stable frame cross-section structure of the present application;

[0033] Figure 9The third hydraulic rod and positioning frame structure schematic diagram of the present application;

[0034] Figure 10 The moving frame cross-section structure schematic diagram of the present application;

[0035] Figure 11 The connecting cylinder cross-section structure schematic diagram of the present application.

[0036] The signs represent: 1, test mechanism; 11, bottom plate; 12, measurement while drilling tool; 2, simulation mechanism; 21, soil layer simulation unit; 2101, simulation box; 2102, mudstone layer; 2103, sandstone layer; 2104, shale layer; 2105, fixed frame; 2106, first hydraulic rod; 2107, pushing frame; 2108, pushing plate; 2109, buffer spring; 2110, first pressure sensor; 2111, sliding rod; 2112, reinforcing ring; 22, pressure simulation unit; 2201, support frame; 2202, second hydraulic rod; 2203, connecting disc; 2204, auxiliary spring; 2205, second pressure sensor; 2206, connecting frame; 2207, rotating bearing; 2208, pressure bearing seat; 2209, first telescopic rod; 2210, sliding block; 2211, sealing ring; 23, inclination simulation unit; 2301, limiting ring; 2302, positioning frame; 2304, first cross universal joint; 2305, second cross universal joint; 2306, electric push rod; 2307, support plate; 2308, stable frame; 2309, rotating ball; 2310, fixed column; 2311, third cross universal joint; 2312, fourth cross universal joint; 2313, strong spring; 2314, reinforcing rib; 2315, stable ring; 2316, second telescopic rod; 3, rotating mechanism; 301, third hydraulic rod; 302, moving frame; 303, servo motor; 304, first gear; 305, limiting cylinder; 306, auxiliary bearing; 307, connecting cylinder; 308, second gear; 309, positioning seat. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below with examples and drawings, the illustrative embodiments of the present application and the description thereof are only used to explain the present application, and do not limit the present application. It should be noted that the present application has been in the actual research and development stage.

[0038] Example 1: please refer to Figures 1-4 The present application provides a technical scheme: a downhole tool rotation working condition simulation test bench, which comprises a test mechanism 1, the test mechanism 1 comprises a bottom plate 11, a measurement while drilling tool 12 is arranged above the bottom plate 11, and a simulation mechanism 2 is arranged above the bottom plate 11;

[0039] The simulation mechanism 2 comprises a soil layer simulation unit 21 arranged outside the measurement-while-drilling tool 12, and the soil layer simulation unit 21 is used for simulating the soil layer in the actual use of the measurement-while-drilling tool 12.

[0040] As a further limitation of the simulation mechanism 2 of the application, the soil layer simulation unit 21 comprises a simulation box 2101 arranged above the base plate 11, the measurement-while-drilling tool 12 is arranged inside the simulation box 2101, the inside of the simulation box 2101 is respectively filled with a mudstone layer 2102, a sandstone layer 2103 and a shale layer 2104, the mudstone layer 2102, the sandstone layer 2103 and the shale layer 2104 are in contact with the measurement-while-drilling tool 12, both sides of the simulation box 2101 are fixedly connected with three fixing frames 2105, the inner wall of each fixing frame 2105 is fixedly connected with a first hydraulic rod 2106, the telescopic end of each first hydraulic rod 2106 is fixedly connected with a pushing frame 2107, each pushing frame 2107 is slidingly connected inside the simulation box 2101, the inside of each pushing frame 2107 is slidingly connected with a pushing plate 2108, the mudstone layer 2102, the sandstone layer 2103 and the shale layer 2104 are in contact with one side of the pushing plate 2108, the inner wall of each pushing frame 2107 is fixedly connected with a plurality of buffer springs 2109, the other end of the plurality of buffer springs 2109 is fixedly connected with one side of the pushing plate 2108, the inner wall of each pushing frame 2107 is fixedly connected with a first pressure sensor 2110, and the detection end of each first pressure sensor 2110 is in contact with one side of the pushing plate 2108. By arranging the soil layer simulation unit 21, the mudstone layer 2102, the sandstone layer 2103 and the shale layer 2104 can be simulated in the simulation box 2101, so that different rock layer environments encountered by the measurement-while-drilling tool 12 in the actual use can be simulated by the drilling of the measurement-while-drilling tool 12, and the running conditions of the electronic module of the measurement-while-drilling tool 12 in the rotary work in different rock layer environments can be tested.

[0041] One side of each pushing frame 2107 is fixedly connected with a plurality of sliding rods 2111, and the plurality of sliding rods 2111 are slidingly connected inside the fixing frame 2105. By sliding the sliding rod 2111 inside the fixing frame 2105, the stability of the pushing frame 2107 when moving left and right can be increased, and the pushing effect is prevented from being affected by the deviation of the pushing frame 2107.

[0042] The outer surface of the telescopic end of each first hydraulic rod 2106 is fixedly connected with a reinforcing ring 2112, and one side of each reinforcing ring 2112 is fixedly connected with one side of the pushing frame 2107. The reinforcing ring 2112 can increase the connection firmness between the first hydraulic rod 2106 and the pushing frame 2107, so that the connection between the first hydraulic rod 2106 and the pushing frame 2107 is not easy to loosen.

[0043] The specific implementation of the embodiment is that first, the first hydraulic rod 2106 and the first pressure sensor 2110 are connected with an external power supply and a controller. When it is necessary to perform a rotary working condition simulation test on the measurement-while-drilling tool 12, the simulated box 2101 is first filled with mudstone, sandstone and shale respectively, so that the mudstone layer 2102, the sandstone layer 2103 and the shale layer 2104 are formed from top to bottom. By using three different types of rock layers, different rock layer environments encountered by the measurement-while-drilling tool 12 in actual use can be simulated, and the running condition of the electronic module of the measurement-while-drilling tool 12 in rotary work in different rock layer environments is tested. Then, by the power provided by the first hydraulic rod 2106 in cooperation with the fixed frame 2105, the pushing frame 2107 can be driven to press the mudstone layer 2102, the sandstone layer 2103 and the shale layer 2104 under the assistance of the sliding rod 2111, so as to increase the pressure and resistance of the mudstone layer 2102, the sandstone layer 2103 and the shale layer 2104 on the measurement-while-drilling tool 12 in the rotary process, simulate the influence of external pressure and resistance on the internal electronic module of the measurement-while-drilling tool 12 in work, and enable the downhole tool rotary working condition simulation test bench to more truly simulate different working environments in the wellbore, better test the working state of the measurement-while-drilling tool 12 in the instrument wellbore, ensure the accuracy of the simulation test data of the measurement-while-drilling tool 12 in the instrument, improve the reliability of subsequent measurement-while-drilling tool 12 in the instrument wellbore operation, increase the simulation test performance of the downhole tool rotary working condition simulation test bench, and when the pushing plate 2108 presses the mudstone layer 2102, the sandstone layer 2103 and the shale layer 2104, the buffer spring 2109 will be forced to contract due to the reaction force, so that the first pressure sensor 2110 receives the reverse force pressure value of the pushing plate 2108, so as to more accurately and reliably collect the influence of external pressure on the internal electronic module of the measurement-while-drilling tool 12.

[0044] Embodiment 2: please refer to Figure 3 , Figure 5 and Figure 6 , the present application provides a technical solution: a downhole tool rotary working condition simulation test bench. The present application makes corresponding improvements for the technical problems mentioned in the background art. The simulation mechanism 2 comprises a pressure simulation unit 22, which is arranged below the measurement-while-drilling tool 12. The pressure simulation unit 22 is used to simulate the pressure actually received by the measurement-while-drilling tool 12 when it is drilled.

[0045] As a further limitation of the simulation mechanism 2 of the application, the pressure simulation unit 22 comprises a support frame 2201, the upper surface of the support frame 2201 is fixedly connected with the bottom surface of the simulation box 2101, the inner wall of the support frame 2201 is fixedly connected with a second hydraulic rod 2202, the telescopic end of the second hydraulic rod 2202 is fixedly connected with a connecting disc 2203, the upper surface of the connecting disc 2203 is fixedly connected with an auxiliary spring 2204, the top end of the auxiliary spring 2204 is fixedly connected with a second pressure sensor 2205, the upper surface of the second pressure sensor 2205 is fixedly connected with a connecting frame 2206, the inner wall of the connecting frame 2206 is fixedly connected with two rotating bearings 2207, the inner wall of the inner ring of the two rotating bearings 2207 is fixedly connected with a pressure bearing seat 2208, the pressure bearing seat 2208 is rotatably connected in the inside of the simulation box 2101, the bottom end of the measurement while drilling tool 12 is in contact with the inner bottom wall of the pressure bearing seat 2208, by setting the pressure simulation unit 22, the pressure received by the bottom end of the measurement while drilling tool 12 can be detected, and the upward reverse pressure can be provided to the bottom end of the measurement while drilling tool 12 without affecting the rotation of the measurement while drilling tool 12, so as to simulate the working state of the internal electronic module of the measurement while drilling tool 12 when the bottom end of the measurement while drilling tool 12 receives strong pressure, so that the working condition of the measurement while drilling tool 12 in actual work can be more realistically simulated, the accuracy of the simulation test data collection is further improved, and the test performance of the downhole tool rotation condition simulation test bench is improved.

[0046] The inside of the auxiliary spring 2204 is provided with a first telescopic rod 2209, the bottom end of the first telescopic rod 2209 is fixedly connected with the upper surface of the connecting disc 2203, the telescopic end of the first telescopic rod 2209 is fixedly connected with the bottom surface of the second pressure sensor 2205, the first telescopic rod 2209 can prevent the auxiliary spring 2204 from deviating, improve the telescopic stability of the auxiliary spring 2204, and increase the cooperation effect of the auxiliary spring 2204 with the connecting disc 2203 and the second pressure sensor 2205.

[0047] The outer surface of the connecting frame 2206 is fixedly connected with two sliding blocks 2210, the two sliding blocks 2210 are both slidingly connected in the inside of the support frame 2201, the outer surface of the pressure bearing seat 2208 is sleeved with a sealing ring 2211, the upper surface of the sealing ring 2211 is fixedly connected with the bottom surface of the simulation box 2101, by sliding the sliding blocks 2210 in the inside of the support frame 2201, the left and right tilting of the connecting frame 2206 can be prevented while the up and down movement of the connecting frame 2206 is not affected, the use reliability of the connecting frame 2206 is ensured, and the sealing ring 2211 can prevent leakage between the pressure bearing seat 2208 and the simulation box 2101.

[0048] The specific implementation of the embodiment is: when the bottom end of the measurement-while-drilling tool 12 passes through the mudstone layer 2102, the sandstone layer 2103 and the shale layer 2104 and is in contact with the bottom wall in the pressure-bearing seat 2208, the rotation of the pressure-bearing seat 2208 is matched with the friction between the bottom end of the measurement-while-drilling tool 12 and the pressure-bearing seat 2208 to rotate the rotating bearing 2207, so that the pressure-bearing seat 2208 rotates with the measurement-while-drilling tool 12, and then the connecting disc 2203, the auxiliary spring 2204 and the second pressure sensor 2205 are pushed to move upward by the power provided by the second hydraulic rod 2202 in cooperation with the support frame 2201, so as to provide upward reverse pressure for the bottom end of the measurement-while-drilling tool 12 through the connecting disc 2203 and the pressure-bearing seat 2208, so as to simulate the working state of the internal electronic module of the measurement-while-drilling tool 12 when the bottom end of the measurement-while-drilling tool 12 is subjected to strong pressure, so that the working condition of the measurement-while-drilling tool 12 in the actual working condition can be more truly simulated, and with the continuous extension of the second hydraulic rod 2202, the auxiliary spring 2204 can be forced to contract with the assistance of the first telescopic rod 2209, so that the second pressure sensor 2205 can smoothly receive the pressure applied to the measurement-while-drilling tool 12, and by collecting the pressure value and comparing the working state of the internal electronic module of the measurement-while-drilling tool 12 under different pressure values, the working condition data of the internal electronic module of the measurement-while-drilling tool 12 when subjected to upward pressure can be conveniently collected by the tester, and the precision of the simulation test data of the measurement-while-drilling tool 12 is further increased.

[0049] Embodiment 3: see Figure 7 and Figure 8 The present application provides a technical solution: a downhole tool rotating working condition simulation test bench, the present application makes corresponding improvements for the technical problems mentioned in the background art, the simulation mechanism 2 further comprises an inclination simulation unit 23, the inclination simulation unit 23 is arranged above the bottom plate 11, and the inclination simulation unit 23 is used for simulating the inclination of the measurement-while-drilling tool 12 in the downhole.

[0050] As a further limitation of the simulation mechanism 2 of the application, the inclination simulation unit 23 comprises a limiting ring 2301 arranged above the bottom plate 11, the outer surface of the simulation box 2101 is fixedly connected with a positioning frame 2302, the inner wall of the limiting ring 2301 is fixedly connected with a plurality of first cross universal joints 2304, the outer surface of the positioning frame 2302 is fixedly connected with a plurality of second cross universal joints 2305, one end of each of the plurality of first cross universal joints 2304 is fixedly connected with an electric push rod 2306, the telescopic end of each electric push rod 2306 is fixedly connected with one end of a second cross universal joint 2305, the bottom surface of the limiting ring 2301 is fixedly connected with four support plates 2307, the bottom surface of each support plate 2307 is fixedly connected with the upper surface of the bottom plate 11, the bottom surface of the simulation box 2101 is fixedly connected with a stable frame 2308, the bottom of the stable frame 2308 is rotatably connected with a rotating ball 2309, the outer surface of the rotating ball 2309 is fixedly connected with a fixed column 2310, the bottom end of the fixed column 2310 is fixedly connected with the upper surface of the bottom plate 11, the outer surface of the stable frame 2308 is fixedly connected with four third cross universal joints 2311, one side surface of each support plate 2307 is fixedly connected with a fourth cross universal joint 2312, one end of each third cross universal joint 2311 is fixedly connected with a strong spring 2313, the other end of each strong spring 2313 is fixedly connected with one end of a fourth cross universal joint 2312, by arranging the inclination simulation unit 23, the measurement-while-drilling tool 12 in the rotary drilling process can be slightly inclined, the inclination of the measurement-while-drilling tool 12 in the actual work in the well can be simulated, whether the three-axis fluxgate magnetometer and the accelerometer built-in the measurement-while-drilling tool 12 can smoothly pass through the three-axis fluxgate magnetometer to collect the earth magnetic field data can be tested, the spatial azimuth angle and the inclination angle of the measurement-while-drilling tool 12 and other parameters can be calculated in real time by combining the three-axis accelerometer to measure the gravity field component, so that the rotary working condition simulation test of the measurement-while-drilling tool 12 and other downhole tools can be more in line with the actual use, and the simulation test work of the measurement-while-drilling tool 12 and other downhole tools is more real and reliable;

[0051] One side surface of each support plate 2307 is fixedly connected with a reinforcing rib 2314, the bottom surface of each reinforcing rib 2314 is fixedly connected with the upper surface of the bottom plate 11, the reinforcing rib 2314 can increase the connection firmness of the support plate 2307 and the bottom plate 11, so that the support plate 2307 is not easy to be inclined and deformed during use, and the pressure strength of the support plate 2307 is improved;

[0052] The outer surface of the fixed column 2310 is fixedly connected with a stable ring 2315, the bottom surface of the stable ring 2315 is fixedly connected with the upper surface of the bottom plate 11, the stable ring 2315 can increase the stability of the fixed column 2310, so that the connection between the fixed column 2310 and the bottom plate 11 is more closely and reliably, and the support stability of the fixed column 2310 to the rotating ball 2309 is ensured.

[0053] The interior of each strong spring 2313 is provided with a second telescopic rod 2316, one end of each second telescopic rod 2316 is fixedly connected with one end of the fourth cross universal joint 2312, and the other end of each second telescopic rod 2316 is fixedly connected with one end of the third cross universal joint 2311, and the second telescopic rod 2316 can make the strong spring 2313 and the third cross universal joint 2311 and the fourth cross universal joint 2312 more stable and integral as a whole.

[0054] The specific implementation of the embodiment is: by utilizing the multi-directional adjustment of the first cross universal joint 2304 and the second cross universal joint 2305, cooperating with the pushing force provided by the electric push rod 2306 and the fixing of the first cross universal joint 2304 by the support plate 2307 and the limiting ring 2301, the simulated box 2101 can be tilted by the positioning frame 2302 through the contraction of one side and the extension of the other side of the electric push rod 2306, which can make the measurement-while-drilling tool 12 slightly tilt during the rotary drilling process, simulate the tilt of the measurement-while-drilling tool 12 in the actual work in the well, test whether the three-axis fluxgate magnetometer and the accelerometer built in the measurement-while-drilling tool 12 can smoothly pass through the three-axis fluxgate magnetometer to collect the earth magnetic field data, combine the three-axis accelerometer to measure the gravity field component, and real-time calculate the spatial azimuth angle and the tilt angle and other parameters of the measurement-while-drilling tool 12, so as to more accurately realize the rotary working condition simulation test of the measurement-while-drilling tool 12 and other downhole tools, and make the simulation test of the measurement-while-drilling tool 12 and other downhole tools more real and reliable. When the simulated box 2101 tilts, by rotating the ball 2309 and cooperating with the fixed column 2310 and the stabilizing ring 2315, the simulated box 2101 and the stabilizing frame 2308 can swing along the center of the rotating ball 2309, so as to increase the tilt stability of the simulated box 2101 without affecting the tilt test of the measurement-while-drilling tool 12, prevent the bottom end of the simulated box 2101 from swinging excessively, and utilize the multi-directional adjustment of the third cross universal joint 2311 and the fourth cross universal joint 2312, the elastic force provided by the strong spring 2313 and the assistance of the second telescopic rod 2316, so as to provide upward tension to the simulated box 2101 without affecting the tilt of the simulated box 2101, thereby sharing the downward pressure on the rotating ball 2309 and the fixed column 2310, reducing the friction between the rotating ball 2309 and the stabilizing frame 2308, improving the tilt simulation test smoothness of the simulated box 2101, and prolonging the service life of the rotating ball 2309 and the stabilizing frame 2308. In addition, the two ends of the test table can be connected with two cables respectively, one end of the two cables is connected with the gamma module of the measurement-while-drilling tool 12, and the other end is connected with the signal input port of the test decoding box. The resistivity of the cable is similar to that of the formation, which can simulate and transmit data, and the signal transmission of the gamma module of the measurement-while-drilling tool 12 can be tested. The test decoding box has data acquisition and analysis functions, and can output key test data including but not limited to inclination parameters, azimuth parameters, gamma parameters and rotation speed parameters after processing the signal transmitted by the gamma module of the measurement-while-drilling tool 12. The test personnel can compare the data read above with the actual situation of the workbench, check and adjust the running accuracy of the electronic module in the measurement-while-drilling tool 12 and the parameter output accuracy, so as to more accurately realize the calibration of the performance of the electronic module in the measurement-while-drilling tool 12.

[0055] Embodiment 4: please refer to Figures 9-11 The application provides a technical solution: a downhole tool rotating working condition simulation test table, and the application makes corresponding improvements to the technical problems mentioned in the background technology. The rotating mechanism 3 is arranged above the soil layer simulation unit 21, and the rotating mechanism 3 is used in cooperation with the simulation mechanism 2. The rotating mechanism 3 is used to drive the drilling measurement tool 12 to drill downward.

[0056] As a further limitation of the rotating mechanism 3 of the application, the rotating mechanism 3 comprises two third hydraulic rods 301, the bottom ends of the two third hydraulic rods 301 are fixedly connected with the upper surface of the positioning frame 2302, the telescopic ends of the two third hydraulic rods 301 are fixedly connected with a moving frame 302, the inside of the moving frame 302 is provided with a servo motor 303, the output end of the servo motor 303 is fixedly connected with a first gear 304, the inner wall of the moving frame 302 is fixedly connected with a limiting cylinder 305, the inner wall of the limiting cylinder 305 is fixedly connected with an auxiliary bearing 306, the inner walls of the inner rings of the two auxiliary bearings 306 are fixedly connected with a connecting cylinder 307, the inner wall of the connecting cylinder 307 is threadedly connected with the top end of the drilling measurement tool 12, the outer surface of the connecting cylinder 307 is fixedly connected with a second gear 308, and the outer surface of the second gear 308 is meshingly connected with the outer surface of the first gear 304. By arranging the rotating mechanism 3, it can be ensured that the multi-section drilling measurement tool 12 can smoothly enter the inside of the simulation box 2101 to perform rotating working condition simulation test, so that the drilling measurement tool 12 can rotate during simulation test or move downward according to the simulation test needs, and the normal performance of the rotating working condition simulation test of the drilling measurement tool 12 is ensured.

[0057] The back surface of the servo motor 303 is fixedly connected with a positioning seat 309, the back surface of the positioning seat 309 is fixedly connected with the inner wall of the moving frame 302, and the positioning seat 309 can position the position of the servo motor 303, so that the servo motor 303 can smoothly drive the first gear 304 to rotate.

[0058] The specific embodiment of the embodiment is: first, the power provided by the third hydraulic rod 301 is used to cooperate with the positioning frame 2302, the moving frame 302 and the connecting barrel 307 are pushed upwards, until the distance between the connecting barrel 307 and the simulation box 2101 can vertically put down one section of the measurement while drilling tool 12, then the measurement while drilling tool 12 is screwed with the connecting barrel 307 through the counterclockwise reverse thread, then the first gear 304 is driven to rotate clockwise through the fixing belt of the positioning seat 309 by the power provided by the servo motor 303, at this time, the connecting barrel 307 can be driven to rotate by the second gear 308 under the assistance of the auxiliary bearing 306 and the limiting barrel 305, so that the measurement while drilling tool 12 can also rotate, and then cooperating with the contraction of the third hydraulic rod 301, the measurement while drilling tool 12 in the rotating process can be driven to enter the inside of the simulation box 2101 for rotating condition simulation test, when the measurement while drilling tool 12 enters the inside of the simulation box 2101, stop the servo motor 303, first fix the position of the measurement while drilling tool 12 by the pipe wrench to prevent it from rotating, then use the reverse rotation of the servo motor 303 to rotate the connecting barrel 307 out of the measurement while drilling tool 12, then thread the other measurement while drilling tool 12 with the first measurement while drilling tool 12, and make the connecting barrel 307 thread with the second measurement while drilling tool 12, cooperate with the extension and contraction of the third hydraulic rod 301 again, so that multiple measurement while drilling tools 12 can enter the inside of the simulation box 2101 for rotating condition simulation test, so that the measurement while drilling tool 12 can rotate during the simulation test, or move downward according to the simulation test needs, to ensure the normal operation of the rotating condition simulation test of the measurement while drilling tool 12.

[0059] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and does not limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A simulation test bench for the rotational operation of downhole tools, comprising a test mechanism (1), characterized in that: The testing mechanism (1) includes a base plate (11), a drilling measurement tool (12) is provided above the base plate (11), and a simulation mechanism (2) is provided above the base plate (11). The simulation mechanism (2) includes a soil layer simulation unit (21), which is located outside the drilling measurement tool (12) and is used to simulate the soil layer during the actual use of the drilling measurement tool (12). The simulation mechanism (2) includes a pressure simulation unit (22), which is located below the measurement while drilling tool (12). The pressure simulation unit (22) is used to simulate the actual pressure experienced by the measurement while drilling tool (12) during drilling. The simulation mechanism (2) also includes an inclination simulation unit (23), which is disposed above the base plate (11) and is used to simulate the inclination of the measurement while drilling tool (12) in the well. A rotating mechanism (3) is provided above the soil simulation unit (21). The rotating mechanism (3) works in conjunction with the simulation mechanism (2). The rotating mechanism (3) is used to drive the drilling measurement tool (12) to drill downwards. The soil simulation unit (21) includes a simulation box (2101), which is located above the base plate (11), and the drilling measurement tool (12) is located inside the simulation box (2101). The pressure simulation unit (22) includes a support frame (2201). The upper surface of the support frame (2201) is fixedly connected to the bottom surface of the simulation box (2101). A second hydraulic rod (2202) is fixedly connected to the inner wall of the support frame (2201). A connecting plate (2203) is fixedly connected to the telescopic end of the second hydraulic rod (2202). An auxiliary spring (2204) is fixedly connected to the upper surface of the connecting plate (2203). A second pressure rod is fixedly connected to the top of the auxiliary spring (2204). Force sensor (2205), the upper surface of the second pressure sensor (2205) is fixedly connected to a connecting frame (2206), the inner wall of the connecting frame (2206) is fixedly connected to two rotating bearings (2207), the inner walls of the inner rings of the two rotating bearings (2207) are fixedly connected to a pressure seat (2208), the pressure seat (2208) is rotatably connected to the inside of the simulation box (2101), and the bottom end of the drilling measurement tool (12) is in contact with the inner bottom wall of the pressure seat (2208); The tilt simulation unit (23) includes a limiting ring (2301), which is located above the base plate (11). A positioning frame (2302) is fixedly connected to the outer surface of the simulation box (2101). Several first universal joints (2304) are fixedly connected to the inner wall of the limiting ring (2301). Several second universal joints (2305) are fixedly connected to the outer surface of the positioning frame (2302). One end of each of the first universal joints (2304) is fixedly connected to an electric push rod (2306). The telescopic end of each electric push rod (2306) is fixedly connected to one end of a second universal joint (2305). Four support plates (2307) are fixedly connected to the bottom surface of the limiting ring (2301). The bottom surface of each support plate (2307) is connected to the base plate. The upper surface of (11) is fixedly connected, and the bottom surface of the simulation box (2101) is fixedly connected to a stabilizing frame (2308). The bottom of the stabilizing frame (2308) is rotatably connected to a rotating ball (2309). The outer surface of the rotating ball (2309) is fixedly connected to a fixing column (2310). The bottom end of the fixing column (2310) is fixedly connected to the upper surface of the base plate (11). The outer surface of the stabilizing frame (2308) is fixedly connected to four third cross universal joints (2311). One side of each support plate (2307) is fixedly connected to a fourth cross universal joint (2312). One end of each third cross universal joint (2311) is fixedly connected to a strong spring (2313). The other end of each strong spring (2313) is fixedly connected to one end of the fourth cross universal joint (2312).

2. The downhole tool rotation condition simulation test bench according to claim 1, characterized in that: The simulation box (2101) is filled with mudstone layer (2102), sandstone layer (2103), and shale layer (2104), which are in contact with the drilling measurement tool (12). Three fixed frames (2105) are fixedly connected to both sides of the simulation box (2101). A first hydraulic rod (2106) is fixedly connected to the inner wall of each fixed frame (2105). A pusher frame (2107) is fixedly connected to the telescopic end of each first hydraulic rod (2106). Each pusher frame (2107) is slidably connected inside the simulation box (2101). Each of the aforementioned pushers (2107) has a pusher plate (2108) slidably connected inside. The mudstone layer (2102), sandstone layer (2103), and shale layer (2104) are all in contact with one side of the pusher plate (2108). Each of the aforementioned pushers (2107) has several buffer springs (2109) fixedly connected to its inner wall. The other end of each of the aforementioned buffer springs (2109) is fixedly connected to one side of the pusher plate (2108). Each of the aforementioned pushers (2107) has a first pressure sensor (2110) fixedly connected to its inner wall. The detection end of each of the aforementioned first pressure sensors (2110) is in contact with one side of the pusher plate (2108).

3. The downhole tool rotation condition simulation test bench according to claim 2, characterized in that: Each of the pushers (2107) has a plurality of sliding rods (2111) fixedly connected to one side, and the plurality of sliding rods (2111) are slidably connected inside the fixed frame (2105).

4. The downhole tool rotation condition simulation test bench according to claim 2, characterized in that: Each of the first hydraulic rods (2106) has a reinforcing ring (2112) fixedly connected to the outer surface of its telescopic end, and one side of each reinforcing ring (2112) is fixedly connected to one side of the push frame (2107).

5. The downhole tool rotation condition simulation test bench according to claim 1, characterized in that: The auxiliary spring (2204) is provided with a first telescopic rod (2209) inside. The bottom end of the first telescopic rod (2209) is fixedly connected to the upper surface of the connecting plate (2203), and the telescopic end of the first telescopic rod (2209) is fixedly connected to the bottom surface of the second pressure sensor (2205).

6. The downhole tool rotation condition simulation test bench according to claim 1, characterized in that: Two sliding blocks (2210) are fixedly connected to the outer surface of the connecting frame (2206). Both sliding blocks (2210) are slidably connected inside the support frame (2201). A sealing ring (2211) is sleeved on the outer surface of the pressure seat (2208). The upper surface of the sealing ring (2211) is fixedly connected to the bottom surface of the simulation box (2101).

7. The downhole tool rotation condition simulation test bench according to claim 1, characterized in that: Each of the support plates (2307) has a reinforcing rib (2314) fixedly connected to one side, and the bottom surface of each reinforcing rib (2314) is fixedly connected to the upper surface of the base plate (11).

8. The downhole tool rotation condition simulation test bench according to claim 1, characterized in that: The outer surface of the fixed column (2310) is fixedly connected to a stabilizing ring (2315), and the bottom surface of the stabilizing ring (2315) is fixedly connected to the upper surface of the base plate (11).

9. The downhole tool rotation condition simulation test bench according to claim 1, characterized in that: Each of the aforementioned high-strength springs (2313) is provided with a second telescopic rod (2316) inside. The telescopic end of each second telescopic rod (2316) is fixedly connected to one end of the fourth universal joint (2312), and the other end of each second telescopic rod (2316) is fixedly connected to one end of the third universal joint (2311).

10. The downhole tool rotation condition simulation test bench according to claim 1, characterized in that: The rotating mechanism (3) includes two third hydraulic rods (301). The bottom ends of the two third hydraulic rods (301) are fixedly connected to the upper surface of the positioning frame (2302). The telescopic ends of the two third hydraulic rods (301) are fixedly connected to a moving frame (302). A servo motor (303) is installed inside the moving frame (302). A first gear (304) is fixedly connected to the output end of the servo motor (303). A limiting cylinder (305) is fixedly connected to the inner wall of the moving frame (302). An auxiliary bearing (306) is fixedly connected to the inner wall of the limiting cylinder (305). A connecting cylinder (307) is fixedly connected to the inner wall of the inner ring of the two auxiliary bearings (306). The inner wall of the connecting cylinder (307) is threadedly connected to the top end of the drilling measurement tool (12). A second gear (308) is fixedly connected to the outer surface of the connecting cylinder (307). The outer surface of the second gear (308) meshes with the outer surface of the first gear (304).

11. The downhole tool rotation condition simulation test bench according to claim 10, characterized in that: The servo motor (303) has a positioning seat (309) fixedly connected to its back side, and the back side of the positioning seat (309) is fixedly connected to the inner wall of the moving frame (302).

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