Torque damping loading measuring tool

Abstract

The invention belongs to the technical field of petroleum drilling and completion, and discloses a torque damping loading measuring tool which comprises an outer cylinder, a friction cylinder assembly, a torque assembly and an external assembly, the friction cylinder assembly comprises a friction cylinder inserted into the outer cylinder from the outer cylinder, the torque assembly comprises an axis cylinder rotationally inserted into the friction cylinder, and the axis cylinder is provided with a first liquid passing hole; an embedding groove is formed in the outer wall, located in the friction cylinder, of the axis cylinder, a friction block is arranged in the embedding groove, a circulation groove communicated with an inner cavity of the axis cylinder is formed in the groove wall of the embedding groove, a piston block is slidably connected into the circulation groove in a sealed mode, and the piston block can push the friction block to abut against the friction cylinder in the axial direction of the axis cylinder; the torque measuring instrument is connected to the axis cylinder; the external assembly comprises a fixed pipe and a connector, the fixed pipe is connected to the outer cylinder in a sealed mode, an external outlet is formed in the fixed pipe, one end of the connector is rotationally inserted into the fixed pipe and connected to the torque measuring instrument, and the other end of the connector is used for being connected with an external testing tool so that the actual underground torque condition can be accurately simulated.

Description

Technical Field

[0001] This invention relates to the field of oil drilling and completion technology, and in particular to a torque damping loading measurement tool. Background Technology

[0002] As oil and gas fields gradually enter the later stages of development, investment in drilling and completion is decreasing. Drilling operations inevitably require a range of speed-up and efficiency-enhancing tools, such as screw drills, hydraulic speed-up tools, and various downhole instruments. To ensure the reliable performance of these tools downhole, surface testing is typically required. Currently, these tests are usually conducted under static or no-load conditions. However, in reality, during rock breaking, the drill string and drilling tools above the drill bit operate under torque conditions. Therefore, conventional testing conditions cannot accurately simulate the actual working state of the tools downhole, limiting the performance verification of these tools. Summary of the Invention

[0003] The purpose of this invention is to provide a torque damping loading measurement tool that can accurately simulate actual downhole torque conditions.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] Torque damping loading measurement tools, which include:

[0006] outer cylinder;

[0007] A friction cylinder assembly, the friction cylinder assembly including a friction cylinder, the first end of the friction cylinder being sealed and inserted into the outer cylinder by the first end of the outer cylinder;

[0008] A torque assembly includes a shaft cylinder and a torque measuring instrument. The shaft cylinder is rotatably inserted into a friction cylinder. The shaft cylinder has a first liquid passage hole communicating with an external liquid injection device, and the first liquid passage hole communicates with the inner cavity of the shaft cylinder. The outer wall of the shaft cylinder located inside the friction cylinder has a groove, and a friction block is disposed in the groove. The groove wall of the groove has a flow groove communicating with the inner cavity of the shaft cylinder. A piston block is slidably sealed in the flow groove, and the piston block can push the friction block against the friction cylinder radially. The torque measuring instrument is located inside the outer cylinder and connected to the shaft cylinder.

[0009] An external component includes a stationary tube and a connector. The stationary tube is sealed to the second end of the outer cylinder and has an external outlet. One end of the connector is rotatably inserted into the stationary tube and connected to the torque measuring instrument. The other end of the connector is used to connect to an external testing tool.

[0010] In some embodiments, the groove extends axially along the shaft cylinder, and a plurality of guide members are provided in the groove at intervals along the axial direction of the shaft cylinder. The friction block is provided with a guide hole, and the friction block slides through the guide hole onto the guide member.

[0011] In some embodiments, multiple grooves are provided along the circumference of the shaft cylinder, and each groove is correspondingly provided with the friction block and the piston block.

[0012] In some embodiments, a seal is provided between the piston block and the wall of the flow channel.

[0013] In some embodiments, the flow channel includes a large-diameter section and a small-diameter section connected in sequence, the small-diameter section being connected to the inner cavity of the shaft cylinder, the large-diameter section being connected to the groove, and the piston block being located within the large-diameter section.

[0014] In some embodiments, the friction cylinder assembly further includes a sealing cap, which is sealed to the second end of the friction cylinder. The sealing cap is provided with a liquid inlet hole, and the outer wall of the shaft cylinder is provided with a first annular groove. The first liquid passage hole is disposed in the first annular groove, and the liquid inlet hole communicates with the first annular groove.

[0015] In some embodiments, the inlet port is connected to a pressure fitting, and the injection device is connected to the pressure fitting.

[0016] In some embodiments, the outer cylinder is provided with a signal transmission hole, through which the torque measuring instrument transmits signals.

[0017] In some embodiments, the signal transmission hole is arranged circumferentially along the outer cylinder and faces the torque measuring instrument.

[0018] In some embodiments, the outer wall of the connector is provided with a second annular groove, the second annular groove is provided with a second liquid passage hole, and the external outlet is connected to the second annular groove.

[0019] The beneficial effects of this invention are:

[0020] The external testing tool is connected to the connector, and then hydraulic oil is injected into the spindle through the inlet hole, driving the spindle to rotate. The spindle will drive the torque measuring instrument, the connector, and the testing tool on the connector to rotate. During the rotation, the hydraulic oil pushes the piston block against the friction block through the flow groove, causing the friction block and the friction cylinder to generate circumferential friction, which generates damping torque. The torque data is then obtained directly through the torque measuring instrument. At the same time, the torque can be adjusted by controlling the oil pressure. After passing through the torque measuring instrument, the hydraulic oil flows out from the external outlet on the stationary pipe, thus providing a load environment close to the actual working condition and more accurately testing the actual performance of the tool. Attached Figure Description

[0021] Figure 1 This is a partial cross-sectional view of the torque damping loading measurement tool of the present invention;

[0022] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 yes Figure 1 Enlarged view of section B in the middle.

[0024] In the picture:

[0025] 1. Outer cylinder; 11. Signal transmission hole;

[0026] 2. Friction cylinder assembly; 21. Friction cylinder; 22. Sealing gland; 23. Liquid inlet; 24. Pressure testing connector; 25. First connecting flange; 26. First bearing; 27. Bearing cover; 28. Pin; 29. ​​Sealing plug;

[0027] 3. Torque assembly; 31. Shaft cylinder; 32. Torque measuring instrument; 33. Groove; 34. Friction block; 35. Flow groove; 36. Piston block; 37. Guide component; 38. Seal component; 39. Guide hole; 310. First liquid passage hole;

[0028] 4. External component; 41. Stationary pipe; 42. Connector; 43. External outlet; 44. Second liquid passage hole; 45. Second connecting flange; 46. Second bearing; 47. Second bearing end cap. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0030] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0033] like Figures 1 to 3 As shown, the present invention provides a torque damping loading measurement tool, which includes an outer cylinder 1, a friction cylinder assembly 2, a torque assembly 3, and an external assembly 4. The friction cylinder assembly 2 includes a friction cylinder 21, the first end of which is sealed and inserted into the outer cylinder 1 through the first end of the outer cylinder 1. The torque assembly 3 includes a spindle cylinder 31 and a torque measuring instrument 32. The spindle cylinder 31 is rotatably inserted into the friction cylinder 21. The spindle cylinder 31 is provided with a first liquid passage hole 310 communicating with an external liquid injection device. A groove 33 is provided on the outer wall of the spindle cylinder 31 located inside the friction cylinder 21. A friction block 34 is provided in the groove 33. The groove wall of the 3 is provided with a flow groove 35 that connects to the inner cavity of the shaft cylinder 31. A piston block 36 is slidably connected in the flow groove 35. The piston block 36 can push the friction block 34 against the friction cylinder 21 radially along the shaft cylinder 31. The torque measuring instrument 32 is located inside the outer cylinder 1 and connected to the shaft cylinder 31. The external component 4 includes a stationary tube 41 and a connector 42. The stationary tube 41 is sealed and connected to the second end of the outer cylinder 1. An external outlet 43 is provided on the stationary tube 41. One end of the connector 42 is rotatably inserted into the stationary tube 41 and connected to the torque measuring instrument 32. The other end of the connector 42 is used to connect to an external testing tool.

[0034] When testing is required, simply connect the external testing tool to the connector 42, then inject hydraulic oil into the spindle cylinder 31 through the inlet hole 23, and drive the spindle cylinder 31 to rotate. The spindle cylinder 31 will drive the torque measuring instrument 32, the connector 42, and the testing tool on the connector 42 to rotate. During the rotation, the hydraulic oil pushes the piston block 36 against the friction block 34 through the flow groove 35, so that the friction block 34 and the friction cylinder 21 generate circumferential friction force, which generates damping torque. Then, the torque data is directly obtained through the torque measuring instrument 32. At the same time, the torque can be adjusted by controlling the oil pressure. After passing through the torque measuring instrument 32, the hydraulic oil flows out from the external outlet 43 on the stationary pipe 41, thus providing a load environment close to the actual working condition and more accurately testing the actual performance of the tool.

[0035] like Figure 2 As shown, in some embodiments, the friction cylinder assembly 2 includes a first connecting flange 25, which is disposed at the first end of the outer cylinder 1, and the friction cylinder 21 is fixed to the first connecting flange 25. In the current embodiment, for ease of installation, the first connecting flange 25 is divided into two flange portions that fit together. One flange portion is fixedly connected to the outer cylinder 1, and the other flange portion is provided with a key or keyway, one of which connects to the other key or keyway on the fixed friction cylinder 21, thereby fixing the friction cylinder 21.

[0036] To facilitate the rotation of the shaft cylinder 31, the friction cylinder assembly 2 also includes a first bearing 26 and a bearing cover 27. Two first bearings 26 are provided. The first end of the friction cylinder 21 is closed, and a through hole is provided at the first end of the friction cylinder 21. One first bearing 26 is disposed inside the first end of the friction cylinder 21, and the first bearing 26 is coaxial with the through hole. The shaft cylinder 31 passes through the first end of the friction cylinder 21 and the first bearing 26. The first bearing 26 is positioned by limiting the rotation of the shaft cylinder 31 within the friction cylinder 21. The bearing cover 27 is disposed at the second end of the friction cylinder 21 and is fixedly connected to the first connecting flange 25. Another first bearing 26 is disposed between the shaft cylinder 31 and the bearing cover 27, thereby straightening the shaft cylinder 31 through the two first bearings 26. Furthermore, the friction cylinder assembly 2 also includes bearing sealing rings located on the upper and lower sides of the first bearing 26, thereby sealing the first bearing 26 and preventing foreign matter from entering the bearing.

[0037] Continue as Figure 2As shown, the friction cylinder assembly 2 also includes a sealing cap 22, which is disposed at the second end of the friction cylinder 21 and connected to the bearing cap 27 by a pin 28. The sealing cap 22 has a liquid inlet hole 23. The end of the shaft cylinder 31 furthest from the torque measuring instrument 32 is closed, and a circumferential first annular groove is provided on the outer wall of this end. Several first liquid passage holes 310 are disposed within the first annular groove, connecting to the inner cavity of the shaft cylinder 31. The liquid inlet hole 23 is directly opposite and connects to the first annular groove. Therefore, when the injection device injects hydraulic oil into the liquid inlet hole 23, the hydraulic oil enters the first annular groove and then enters the inner cavity of the shaft cylinder 31 through the first liquid passage holes 310. This means that even when the shaft cylinder 31 is rotating, hydraulic oil can still be injected. Furthermore, by providing the liquid inlet hole 23 in the sealing cap 22, interference with the injection device during shaft cylinder 31 rotation can be avoided. Furthermore, to facilitate the injection of hydraulic oil, the inlet hole 23 is threadedly connected to a pressure fitting 24, thereby connecting the injection device to the pressure fitting 24 for injection. Further still, an isolation sealing ring is provided inside the sealing cap 22, positioned on both sides of the outlet of the inlet hole 23 connecting to the first annular groove, thereby preventing hydraulic oil leakage. In some embodiments, to facilitate the opening of the inlet hole 23 on the sealing cap 22, the inlet hole 23 includes a first section and a second section. The first section penetrates the side of the sealing cap 22 radially and connects to the first annular groove. The second section connects to the first section axially from the end face of the sealing cap 22. The pressure fitting 24 is connected to the port of the second section away from the first section, and a sealing plug 29 is provided to close the port of the first section away from the first annular groove.

[0038] Similarly, such as Figure 1 As shown, the stationary pipe 41 is fixedly connected to the second end of the outer cylinder 1 via a second connecting flange 45. The second connecting flange 45 also includes two flange portions that are joined together, one of which is connected to the second end of the outer cylinder 1, and the other flange portion is connected to the stationary pipe 41. Furthermore, the external assembly 4 includes a second bearing 46, which is disposed inside the stationary pipe 41. The outer wall of the connector 42 is provided with a mounting step, and the second bearing 46 is fitted onto the mounting step, thereby transferring the connection to the stationary pipe 41 via the second bearing 46. A second bearing end cap 47 is provided at the end of the stationary pipe 41 away from the outer cylinder 1. The second bearing end cap 47 and the mounting step together restrict the second bearing 46. The outer wall of the connector 42 is provided with a circumferential second annular groove, within which a second fluid passage hole 44 communicating with the inner cavity of the connector 42 is provided. The external outlet 43 is directly opposite the communicating second annular groove, allowing hydraulic oil to enter the second annular groove through the second fluid passage hole 44 of the connector 42 and then flow out through the external outlet 43. For example, the external outlet 43 can be connected to a liquid injection device to form a hydraulic oil circulation.

[0039] like Figure 3As shown, in some embodiments, the groove 33 extends axially along the shaft cylinder 31, and a plurality of guide members 37 are spaced apart along the axial direction of the shaft cylinder 31 within the groove 33. The friction block 34 has a guide hole 39, and the guide member 37 passes through the guide hole 39, allowing the friction block 34 to slide through the cooperation between the guide member 37 and the guide hole 39, preventing the friction block 34 from shifting during the pushing process. For example, the guide member 37 is a screw, which is screwed onto the shaft cylinder 31. Furthermore, multiple grooves 33 are arranged circumferentially along the shaft cylinder 31, and the aforementioned friction block 34 and piston block 36 are arranged within each groove 33, thereby enabling circumferential contact with the friction cylinder 21 and ensuring sufficient torque damping during testing.

[0040] In some embodiments, the flow channel 35 is divided into a large diameter section and a small diameter section. The small diameter section is connected to the inner cavity of the shaft cylinder 31, and the large diameter section is connected to the groove 33. The piston block 36 slides in the large diameter section, and a seal 38 is provided between the piston block 36 and the groove wall of the flow channel 35 to prevent hydraulic oil from seeping out of the shaft cylinder 31 through the gap between them.

[0041] like Figure 1 As shown, in some embodiments, the outer cylinder 1 is provided with a signal transmission hole 11, through which the torque measuring instrument 32 transmits signals. Furthermore, the signal transmission hole 11 is arranged circumferentially along the outer cylinder 1 and faces the torque measuring instrument 32, so that when the torque measuring instrument 32 rotates, torque data can be transmitted to an external receiver at various positions of rotation via the wireless mechanism of the torque measuring instrument 32.

[0042] The usage process is briefly described below:

[0043] The outer cylinder 1 is fixed in place by means of a stand or similar means, keeping it stationary. For tools that require hydrodynamic testing, such as screw drills, the stator of the screw needs to be fixed in place by means of a stand or similar means, keeping the stator stationary and not rotating. The rotor of the test tool is connected to the drill rod buckle of the connector 42. For tools that require external power (such as a drilling rig), the drill rod buckle of the upper connector 42 can be directly connected to the test tool. Then, the test tool is rotated by means of circulation or drilling, which drives the spindle cylinder 31 and the torque measuring instrument 32 to rotate. Hydraulic oil is injected through the injection device, pushing the piston block 36 and the friction block 34 to move radially outward along the spindle cylinder 31. The friction block 34 generates friction and load torque with the friction cylinder 21. The torque measuring instrument 32 measures and sends the torque data. The load torque can be changed by changing the hydraulic pressure to complete the test of the test tool.

[0044] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A torque damping loading measurement tool, characterized in that, include: outer cylinder(1); Friction cylinder assembly (2), the friction cylinder assembly (2) includes a friction cylinder (21), the first end of the friction cylinder (21) is sealed and inserted into the outer cylinder (1) by the first end of the outer cylinder (1); A torque assembly (3) includes a shaft cylinder (31) and a torque measuring instrument (32). The shaft cylinder (31) is rotatably inserted into the friction cylinder (21). The shaft cylinder (31) is provided with a first liquid passage hole (310) communicating with an external liquid injection device. The first liquid passage hole (310) communicates with the inner cavity of the shaft cylinder (31). The outer wall of the shaft cylinder (31) located inside the friction cylinder (21) is provided with a groove (33). A friction block (34) is provided in the groove (33), and a flow groove (35) is provided in the groove wall of the groove (33) to communicate with the inner cavity of the shaft cylinder (31). A piston block (36) is slidably sealed in the flow groove (35), and the piston block (36) can push the friction block (34) against the friction cylinder (21) along the radial direction of the shaft cylinder (31); the torque measuring instrument (32) is located in the outer cylinder (1) and connected to the shaft cylinder (31); An external component (4) includes a stationary tube (41) and a connector (42). The stationary tube (41) is sealed to the second end of the outer cylinder (1). An external outlet (43) is provided on the stationary tube (41). One end of the connector (42) is rotatably inserted into the stationary tube (41) and connected to the torque measuring instrument (32). The other end of the connector (42) is used to connect to an external testing tool.

2. The torque damping loading measuring tool according to claim 1, characterized in that, The groove (33) extends along the axial direction of the shaft cylinder (31), and a plurality of guide members (37) are provided in the groove (33) at intervals along the axial direction of the shaft cylinder (31). The friction block (34) is provided with a guide hole (39), and the friction block (34) slides through the guide hole (39) onto the guide member (37).

3. The torque damping loading measuring tool according to claim 1, characterized in that, Multiple grooves (33) are provided along the circumference of the shaft cylinder (31), and each groove (33) is provided with the friction block (34) and the piston block (36).

4. The torque damping loading measuring tool according to claim 1, characterized in that, A sealing element (38) is provided between the piston block (36) and the groove wall of the flow groove (35).

5. The torque damping loading measuring tool according to claim 1, characterized in that, The flow channel (35) includes a large diameter section and a small diameter section connected in sequence. The small diameter section is connected to the inner cavity of the shaft cylinder (31), and the large diameter section is connected to the groove (33). The piston block (36) is located in the large diameter section.

6. The torque damping loading measuring tool according to claim 1, characterized in that, The friction cylinder assembly (2) further includes a sealing cap (22), which is sealed to the second end of the friction cylinder (21). The sealing cap (22) is provided with a liquid inlet hole (23). The outer wall of the shaft cylinder (31) is provided with a first annular groove. The first liquid passage hole (310) is provided in the first annular groove. The liquid inlet hole (23) communicates with the first annular groove.

7. The torque damping loading measuring tool according to claim 6, characterized in that, The liquid inlet (23) is connected to a pressure fitting (24), and the liquid injection device is connected to the pressure fitting (24).

8. The torque damping loading measuring tool according to claim 1, characterized in that, The outer cylinder (1) is provided with a signal transmission hole (11), and the torque measuring instrument (32) transmits signals through the signal transmission hole (11).

9. The torque damping loading measuring tool according to claim 8, characterized in that, The signal transmission hole (11) is arranged circumferentially along the outer cylinder (1) and is directly opposite the torque measuring instrument (32).

10. The torque damping loading measuring tool according to claim 1, characterized in that, The outer wall of the connector (42) is provided with a second annular groove, and a second liquid passage hole (44) is provided in the second annular groove. The external outlet (43) is connected to the second annular groove.

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