Calibration device

Abstract

The invention relates to the technical field of petroleum drilling, and discloses a calibration device which comprises a support, an adjusting assembly, a stretching assembly and a measuring assembly. An inserting hole for the to-be-measured object to penetrate through is formed in the supporting part, hanging holes for the to-be-measured object to penetrate through are formed in the top ends of the two stretching pieces, and the inserting hole and the hanging holes are of circular structures matched with the to-be-measured object in shape, so that the matching effect of the calibration device and the to-be-measured object is improved, the calibration device and the to-be-measured object are tightly attached, and the calibration accuracy is improved. And the measurement error of the calibration device can be effectively reduced. When bending moment calibration is carried out on an object to be measured through the calibration device, the adjusting piece abuts against the connecting piece, downward acting force is continuously applied to the connecting piece, the bottom ends of the two stretching pieces are subjected to downward pressure to move downwards, and further, the downward pressure acts on the object to be measured through the top ends of the stretching pieces and enables the object to be measured to deform. The sensor arranged on the to-be-measured object can accurately obtain the deformation information of the to-be-measured object.

Description

Technical Field

[0001] The invention belongs to the technical field of oil drilling, and in particular relates to a calibration device. Background Art

[0002] Drilling and completion engineering is a key link in oil and gas development. Due to the common high temperature and high pressure and complex formation pressure system in deep and ultra-deep oil and gas reservoirs, various downhole complex conditions often occur during deep well drilling and completion. When downhole complexities occur, there will be certain signs, which are directly manifested as abnormal force parameters of the drilling and completion string, such as drilling pressure, torque, bending moment, vibration, etc. The pure calibration device in the prior art is mainly used for bending moment calibration of square structures, and is not suitable for the bending moment calibration of round tube structures of oil and gas drilling and completion strings, and there are certain measurement errors. Summary of the invention

[0003] The purpose of the present invention is to provide a calibration device, which can effectively reduce the measurement error existing in the calibration measurement process of the bending moment of a circular tube structure.

[0004] In order to achieve the above object, the present invention provides a calibration device, the calibration device comprising:

[0005] Bracket;

[0006] An adjustment component is installed at the top of the bracket. The adjustment component includes an adjustment body and an adjustment member installed below the adjustment body. Two support parts are respectively provided at positions above the adjustment body near both ends. The support parts are formed with plug holes for the object to be tested to pass through.

[0007] The stretching assembly includes two stretching members extending vertically and arranged at intervals, the top ends of the two stretching members form a hanging hole for the object to be tested to pass through, the bottom ends are connected by a connecting member, the adjusting member abuts against the connecting member and can apply a downward stretching force to the connecting member, and the plug hole and the hanging hole are both circular structures adapted to the shape of the object to be tested;

[0008] The measuring assembly comprises a sensor arranged on the object to be measured and used for bending moment calibration measurement.

[0009] In an embodiment of the present invention, the stretching member includes a positioning rod, a first positioning joint threadedly connected to the top end of the positioning rod, and a second positioning joint threadedly connected to the bottom end of the positioning rod, and the hanging hole is opened on the first positioning joint.

[0010] In an embodiment of the present invention, a mounting groove is formed on the second positioning joint, and the stretching member also includes a hanging member, one end of the hanging member is inserted into the mounting groove and detachably connected to the inner wall of the mounting groove, and the other end is detachably connected to the connecting member.

[0011] In an embodiment of the present invention, a limiting protrusion is provided at the bottom end of the support portion, a limiting groove is formed on one side of the adjustment body facing the support portion, and the limiting protrusion extends into the limiting groove to limit the adjustment body and the support portion.

[0012] In an embodiment of the present invention, central axes of the two hanging holes and the two plugging holes are located on the same horizontal line.

[0013] In an embodiment of the present invention, the measuring component further comprises a force gauge communicatively connected to the sensor, and the force gauge is used to receive a sensing signal sent by the sensor to convert the sensing signal into force information and display the information.

[0014] In an embodiment of the present invention, the adjustment assembly further comprises an adjustment handle connected to a side surface of the adjustment body, the adjustment handle being connected to the adjustment member and being used to drive the adjustment member to perform telescopic movement along the height direction.

[0015] In an embodiment of the present invention, the sensor is disposed in the middle of the object to be measured, and the number of the sensors is plural and they are arranged at intervals along the circumferential direction of the inner wall of the object to be measured.

[0016] In an embodiment of the present invention, the calibration device further comprises a horizontal inclinometer, which is arranged parallel to and spaced apart from the object to be measured and is used to monitor the bending degree of the object to be measured during the stretching process.

[0017] In an embodiment of the present invention, the bracket includes a pulley member, a mounting platform and two spaced support rods, the top end of the support rods is connected to the adjustment body, and the bottom end is connected to the mounting platform, and a plurality of pulley members are installed on the side of the mounting platform away from the support rods.

[0018] Through the above technical solution, the calibration device provided by the embodiment of the present invention has the following beneficial effects:

[0019] The calibration device in this embodiment includes a bracket, an adjustment component, a stretching component and a measuring component. The adjustment component is installed at the top of the bracket, and the adjustment component includes an adjustment body and an adjustment member installed below the adjustment body. Two support parts are respectively provided at the positions near the two ends above the adjustment body, and a plug-in hole is formed on the support part for the object to be measured to pass through. The stretching component includes two stretching members extending vertically and arranged at intervals, and the tops of the two stretching members are formed with hanging holes for the object to be measured to pass through. The bottom ends of the two stretching members are connected by a connecting member, and the plug-in hole and the hanging hole are both circular structures adapted to the shape of the object to be measured, which improves the coordination effect of the calibration device and the object to be measured and reduces the measurement error of the calibration device. When the calibration device is used to calibrate the bending moment of the object to be measured, the adjusting member abuts the connecting member and continuously applies a downward force to the connecting member, and the bottom ends of the two stretching members are subjected to downward pressure and move downward. Further, the downward pressure will act on the object to be measured through the top of the stretching member and cause the object to be measured to deform, and the sensor arranged on the object to be measured can accurately obtain the deformation information of the object to be measured. Compared with the calibration device with a square structure in the prior art for calibrating a round tube, the calibration device of this embodiment has a better matching effect with the object to be measured and a higher measurement accuracy.

[0020] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative work. In the accompanying drawings:

[0022] Figure 1 It is a structural schematic diagram of the calibration device according to the present invention;

[0023] Figure 2 A schematic diagram of the structure of the calibration device according to the present invention omitting the object to be measured and one of the supporting parts;

[0024] Figure 3 It is a structural schematic diagram of the support part according to the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the stretching assembly according to the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of arranging sensors on the object to be tested according to the present invention.

[0027] Description of Reference Numerals

[0028] 1 Bracket 3 Tensile component

[0029] 11 pulley parts 31 tensile parts

[0030] 12 Mounting table 311 Positioning rod

[0031] 13 Support rod 312 First positioning joint

[0032] 2 Adjustment assembly 313 Second positioning joint

[0033] 21 Adjustment body 314 Mounting slot

[0034] 211 Limiting slot 315 Hanging hole

[0035] 22 Adjustment piece 32 Connector

[0036] 23 support part 33 hanging part

[0037] 231 Socket 41 Sensor

[0038] 232 limit protrusion 42 force gauge

[0039] 24 Adjustment handle 100 Object to be measured DETAILED DESCRIPTION

[0040] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0041] The calibration device according to the present invention will be described below with reference to the accompanying drawings.

[0042] like Figure 1As shown, the present application provides a calibration device, which includes a bracket 1, an adjustment component 2, a stretching component 3 and a measuring component. The adjustment component 2 is installed at the top of the bracket 1, and the adjustment component 2 includes an adjustment body 21 and an adjustment member 22 installed below the adjustment body 21. Two support parts 23 are respectively provided at the positions near the two ends above the adjustment body 21, and a plug hole 231 for the object to be measured 100 to pass through is formed on the support part 23. The stretching component 3 includes two stretching members 31 extending vertically and arranged at intervals. The top ends of the two stretching members 31 form a hanging hole 315 for the object to be measured 100 to pass through, and the bottom ends are connected by a connecting member 32. The adjustment member 22 abuts against the connecting member 32 and can apply a downward tensile force to the connecting member 32. The plug hole 231 and the hanging hole 315 are both circular structures adapted to the shape of the object to be measured 100. The measuring component includes a sensor 41 arranged on the object to be measured 100 and used for bending moment calibration measurement. In this embodiment, a cylindrical object to be measured 100 is used as a bending moment calibration object, such as a cylindrical drill string. Figure 2 The up and down directions in the horizontal direction are Figure 2 The left and right direction in .

[0043] In the present embodiment, a plug-in hole 231 is formed on the support portion 23 for the object to be measured 100 to pass through, and a hanging hole 315 is formed on the top of each of the two stretching members 31 for the object to be measured 100 to pass through. Both the plug-in hole 231 and the hanging hole 315 are circular structures that match the shape of the object to be measured 100. When plugged in, the tubular object to be measured passes through the plug-in hole 231 and the hanging hole 315 in turn, thereby improving the coordination effect between the calibration device and the object to be measured 100, avoiding the stress concentration problem commonly seen in the square-structured calibration device in the prior art, and effectively reducing the measurement error of the calibration device. When the calibration device is used to calibrate the bending moment of the object 100, the adjusting member 22 abuts against the connecting member 32 and continuously applies a downward force to the connecting member 32, and the bottom ends of the two tensile members 31 are subjected to the downward pressure and move downward. Furthermore, the downward pressure will act on the object 100 through the top of the tensile member 31 and cause the object 100 to deform. The sensor 41 arranged on the object 100 can accurately obtain the deformation information of the object 100. Compared with the calibration device of the square structure in the prior art for calibrating the circular tube, the calibration device of this embodiment has a better matching effect with the object 100 and a higher measurement accuracy. Among them, the stress concentration problem refers to the fact that the object 100 has been deformed by the pressure before the bending moment calibration measurement is performed on the object 100, resulting in a decrease in the measurement accuracy of the object 100.

[0044] like Figure 1 and Figure 4As shown, in the present embodiment, the stretching member 31 includes a positioning rod 311, a first positioning joint 312 threadedly connected to the top end of the positioning rod 311, and a second positioning joint 313 threadedly connected to the bottom end of the positioning rod 311. The first positioning joint 312 and the second positioning joint 313 are both provided with threaded connection holes with internal threads. The positioning rod 311 is provided with external threads matching the internal threads at both ends along the length direction. The threaded connection arrangement of the first positioning joint 312 and the second positioning joint 313 ensures that the stretching member 31 can be easily assembled, and the first positioning joint 312 matching the object to be tested 100 can be replaced according to actual needs. The hanging hole 315 is opened on the first positioning joint 312, and the object to be measured 100 passes through the plug hole 231 and the hanging hole 315 in sequence, and ensures that the sensor 41 is between the two first positioning joints 312 and the distance between the first positioning joints 312 on the left and right sides of the sensor 41 is equal, thereby ensuring that the sensor 41 can sensitively monitor the bending moment changes of the object to be measured 100 and perform bending moment calibration measurements, thereby ensuring the accuracy of the calibration device in performing bending moment calibration measurements.

[0045] like Figure 4 As shown, in this embodiment, a mounting groove 314 is formed on the second positioning joint 313, and the stretching member 31 also includes a hanging member 33, one end of the hanging member 33 is inserted into the mounting groove 314 and is detachably connected to the inner side wall of the mounting groove 314, and the other end is detachably connected to the connecting member 32. Among them, a locking rod is also provided on the second positioning joint 313, and the locking rod is inserted into the second positioning joint 313 in the horizontal direction and penetrates the hanging member 33, so that the hanging member 33 can be detachably connected to the second positioning joint 313 through the locking rod, which can effectively improve the force strength of the second positioning joint 313, disperse the pressure on the second positioning joint 313, and reduce the damage to the second positioning joint 313 caused by the downward pressure, and the detachable setting of the hanging member 33 also facilitates the convenient replacement of the hanging member 33 after it is damaged and deformed. Similarly, one end of the hanging member 33 that is detachably connected to the connecting member 32 is also locked by the locking rod, and the locking rod can adopt a pin shaft in the prior art.

[0046] like Figure 2 and Figure 3As shown, in this embodiment, a limiting protrusion 232 is provided at the bottom end of the support portion 23, and a limiting groove 211 is formed on one side of the adjustment body 21 facing the support portion 23, and the limiting protrusion 232 extends into the limiting groove 211 to limit the adjustment body 21 and the support portion 23. The support portion 23 is an L-structure, and a plug-in hole 231 is formed at the top end of the support portion 23 for the object to be tested 100 to pass through, and a contact surface that contacts the adjustment body 21 is formed at the bottom end, and a limiting protrusion 232 is formed on one side of the contact surface facing the adjustment body 21, and the limiting groove 211 is gradually narrowed from the bottom of the groove to the top. Through the cooperation of the limiting protrusion 232 and the limiting groove 211, the limiting connection between the adjustment body 21 and the support portion 23 can be efficiently achieved, thereby ensuring the stability of the installation of the support portion 23. Furthermore, a limiting portion is provided on the left side of the limiting groove 211 at the left end of the adjusting body 21, and a limiting portion is also provided on the right side of the limiting groove 211 at the right end of the adjusting body 21. The limiting portion can play a role in blocking the limiting protrusion 232, so that the limiting groove 211 is only formed with a single-side opening for the limiting protrusion 232 to extend into, thereby preventing the limiting protrusion 232 from sliding out of the limiting groove 211. When facing objects 100 of different sizes to be measured, the support portion 23 with a plug-in hole 231 matching the size of the object 100 to be measured can be replaced, thereby enhancing the versatility and practicality of the calibration device. It should be noted that an avoidance groove extending in the front-to-back direction is also provided above the adjusting body 21, and the single-side opening of the limiting groove 211 faces the avoidance groove, and the groove width of the avoidance groove is greater than the width of the limiting protrusion 232, so that the limiting protrusion 232 can pass smoothly. During the assembly of the support part 23 and the adjusting body 21, the limiting protrusion 232 is placed in the avoidance groove. After the single-sided opening of the limiting groove 211 is aligned with the limiting protrusion 232, the assembly can be easily completed by extending it into the limiting groove 211, thereby realizing convenient assembly between the support part 23 and the adjusting body 21.

[0047] In this embodiment, the central axes of the two hanging holes 315 and the two plug holes 231 are all located on the same horizontal line, ensuring that the object to be tested 100 can always maintain an aligned state when the calibration device has not applied a force to the object to be tested 100, thereby avoiding the object to be tested 100 being bent under pressure after passing through the plug holes 231 and the hanging holes 315 in sequence due to deviation of the central axis.

[0048] like Figure 1 As shown, in this embodiment, the measuring component also includes a dynamometer 42 that is communicatively connected to the sensor 41. The dynamometer 42 is used to receive the sensing signal sent by the sensor 41 to convert the sensing signal into force information and display it for easy viewing by the staff. Among them, the dynamometer 42 in this embodiment is arranged on the adjustment body 21, and the position of the dynamometer 42 can be adjusted according to actual needs, and it only needs to ensure that the dynamometer 42 can clearly display the force information.

[0049] like Figure 1 As shown, in this embodiment, the adjustment assembly 2 also includes an adjustment handle 24 connected to the front of the adjustment body 21, and the adjustment handle 24 is engaged with the adjustment member 22 through gear matching, and can drive the adjustment member 22 to perform telescopic movement in the height direction by rotating the adjustment handle 24. It should be noted that in this embodiment, the adjustment member 22 can be set as a telescopic cylinder.

[0050] like Figure 5 As shown, in this embodiment, the sensor 41 is arranged in the middle of the object to be tested 100, and the number of sensors 41 is multiple and arranged at intervals along the inner wall of the object to be tested 100. It should be noted that the sensor 41 can be a resistive strain gauge, and multiple resistive strain gauges are arranged at intervals along the inner wall of the object to be tested 100 to form a Wheatstone bridge. The voltage change at the sensor 41 is monitored by the force gauge 42 and the voltage change is converted into force information for display, which can further accurately monitor the force condition of the object to be tested 100 and improve the accuracy of the bending moment calibration of the object to be tested 100.

[0051] In this embodiment, the calibration device also includes a horizontal inclinometer, which is arranged parallel to the object to be tested 100 and is used to monitor the bending degree of the object to be tested 100 during the stretching process, obtain the bending angle of the object to be tested 100, and compare and verify the bending moment value of the object to be tested 100 with the bending angle, so as to comprehensively obtain a more accurate bending moment value of the object to be tested 100.

[0052] like Figure 3 As shown, the bracket 1 includes a pulley 11, a mounting platform 12 and two support rods 13 arranged at intervals. The top ends of the two support rods 13 are connected to the adjustment body 21, and the bottom ends of the two support rods 13 are connected to the mounting platform 12. The mounting platform 12 is a plate-like structure and extends in the horizontal direction. In this embodiment, four pulleys 11 are installed on the side of the mounting platform 12 away from the support rods 13. The four pulleys 11 are arranged corresponding to the four corners of the mounting platform 12 respectively, ensuring that the bracket 1 has good support stability as a whole. At the same time, the setting of the pulley 11 enables the bracket 1 to slide on the ground, and the calibration device can be easily moved to different positions, so as to better cooperate with the object to be measured 100 for bending moment calibration. Among them, the pulley 11 is a pulley, and the number of pulleys 11 is not limited to four. The number of pulleys 11 arranged below the mounting platform 12 can be changed according to actual needs.

[0053] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0056] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A calibration device, characterized in that: The calibration device comprises: Bracket (1); An adjustment component (2) is installed at the top end of the bracket (1), the adjustment component (2) comprises an adjustment body (21) and an adjustment member (22) installed below the adjustment body (21), two support parts (23) are respectively provided above the adjustment body (21) near the two ends, and a plug hole (231) is formed on the support part (23) for the object to be tested (100) to pass through; A stretching assembly (3) comprising two stretching members (31) extending vertically and arranged at intervals, the top ends of the two stretching members (31) forming a hanging hole (315) for the object to be tested (100) to pass through, and the bottom ends are connected by a connecting member (32), the adjusting member (22) abuts against the connecting member (32) and can apply a downward stretching force to the connecting member (32), and the plug hole (231) and the hanging hole (315) are both circular structures adapted to the shape of the object to be tested (100); The measuring assembly comprises a sensor (41) arranged on the object to be measured (100) and used for bending moment calibration measurement.

2. The calibration device according to claim 1, characterized in that: The stretching member (31) comprises a positioning rod (311), a first positioning joint (312) threadedly connected to the top end of the positioning rod (311), and a second positioning joint (313) threadedly connected to the bottom end of the positioning rod (311), and the hanging hole (315) is opened on the first positioning joint (312).

3. The calibration device according to claim 2, characterized in that: A mounting groove (314) is formed on the second positioning joint (313), and the stretching member (31) further comprises a hanging member (33), one end of the hanging member (33) is inserted into the mounting groove (314) and is detachably connected to the inner wall of the mounting groove (314), and the other end is detachably connected to the connecting member (32).

4. The calibration device according to any one of claims 1 to 3, characterized in that: A limiting protrusion (232) is provided at the bottom end of the support portion (23), a limiting groove (211) is formed on one side of the adjustment body (21) facing the support portion (23), and the limiting protrusion (232) extends into the limiting groove (211) to limit and clamp the adjustment body (21) and the support portion (23).

5. The calibration device according to any one of claims 1 to 3, characterized in that: The central axes of the two hanging holes (315) and the two plugging holes (231) are located on the same horizontal line.

6. The calibration device according to any one of claims 1 to 3, characterized in that: The measuring component further comprises a force gauge (42) communicatively connected to the sensor (41), and the force gauge (42) is used to receive a sensing signal sent by the sensor (41) so as to convert the sensing signal into force information and display the information.

7. The calibration device according to any one of claims 1 to 3, characterized in that: The adjustment assembly (2) further comprises an adjustment handle (24) connected to the side of the adjustment body (21); the adjustment handle (24) is connected to the adjustment member (22) and is used to drive the adjustment member (22) to perform telescopic movement in the height direction.

8. The calibration device according to any one of claims 1 to 3, characterized in that: The sensor (41) is arranged in the middle of the object to be measured (100), and the number of the sensors (41) is plural and they are arranged at intervals along the circumferential direction of the inner wall of the object to be measured (100).

9. The calibration device according to any one of claims 1 to 3, characterized in that: The calibration device further comprises a horizontal angle meter, which is arranged in parallel and at intervals with the object to be measured (100) and is used to monitor the degree of bending of the object to be measured (100) during the stretching process.

10. The calibration device according to any one of claims 1 to 3, characterized in that: The bracket (1) comprises a pulley member (11), a mounting platform (12) and two spaced-apart support rods (13); the top end of the support rod (13) is connected to the adjustment body (21), and the bottom end is connected to the mounting platform (12); a plurality of pulley members (11) are installed on a side of the mounting platform (12) away from the support rod (13).

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