Measurement while drilling device

Abstract

The utility model belongs to the technical field of petroleum drilling equipment, and particularly relates to a measurement-while-drilling device which comprises a protection head, a mounting pipe and a mounting sleeve rod, the protection head is detachably connected with the mounting pipe, the mounting pipe is detachably connected with the mounting sleeve rod, and the mounting pipe is located between the protection head and the mounting sleeve rod; a placement pipe is fixedly mounted in the middle of the interior of the mounting pipe, a first accommodating cavity is formed in the placement pipe, and a sensor is placed in the first accommodating cavity; buffer assemblies are arranged at the two ends of the sensor in the first accommodating cavity; partition plates are fixedly mounted in the mounting pipe and located on the peripheral side of the containing pipe, and a plurality of second containing cavities are formed among the inner wall of the mounting pipe, the partition plates and the containing pipe. An accelerometer is placed in the second containing cavity, the accelerometer is placed at the bottom of the second containing cavity, and a limiting assembly used for fixing the accelerometer is further installed in the second containing cavity.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil drilling equipment, and specifically relates to a measurement-while-drilling device. Background Technique

[0002] At present, wired or wireless measurement-while-drilling instruments are usually used in directional drilling construction to measure well inclination and azimuth. The measurement-while-drilling instrument is usually placed in one or two non-magnetic drill collars, and several accelerometers and fluxgate sensors are used to measure three components of the gravitational acceleration and three components of the geomagnetic field at the location of the measurement-while-drilling instrument respectively. Then, corresponding calculation methods are used to calculate the well inclination and azimuth at the location of the measurement-while-drilling instrument.

[0003] In the existing measurement-while-drilling instruments, the accelerometers and sensors used for measurement are directly placed in the pipeline of the measurement instrument, lacking fixation of the accelerometers and sensors. It is easy to cause damage and failure of the accelerometers and sensors inside the pipeline due to the movement of the instrument following the drill bit during use. Moreover, the existing measurement-while-drilling instruments do not take protective measures for the positions where the accelerometers and sensors are located, and it is easy to cause damage to the internal structure during use. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a measurement-while-drilling device.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] A measurement-while-drilling device, comprising:

[0007] A protection head, an installation pipe and an installation sleeve rod, the protection head is detachably connected to the installation pipe, the installation pipe is detachably connected to the installation sleeve rod, and the installation pipe is located between the protection head and the installation sleeve rod;

[0008] In the middle of the interior of the installation pipe, a placement pipe is fixedly installed, a first accommodation cavity is provided in the placement pipe, and a sensor is placed in the first accommodation cavity; buffer components are provided at both ends of the sensor in the first accommodation cavity;

[0009] Inside the installation pipe, a partition is fixedly installed around the placement pipe, and a plurality of second accommodation cavities are formed between the inner wall of the installation pipe, the partition and the placement pipe; an accelerometer is placed in the second accommodation cavity, the accelerometer is placed at the bottom of the second accommodation cavity, and a limiting component for fixing the accelerometer is also installed in the second accommodation cavity.

[0010] Furthermore, clamping blocks are fixedly installed at both ends of the installation pipe, clamping grooves are opened at one ends of the protection head and the installation sleeve rod, and the clamping blocks are adapted to the clamping grooves.

[0011] Further, a first threaded hole is provided on the side end of the clamping block. Second threaded holes are provided on the side ends of both the protection head and the mounting sleeve rod. The first threaded hole is adapted to the second threaded hole. A detachable connection is achieved between the protection head and the mounting tube, and between the mounting sleeve rod and the mounting tube through long screws.

[0012] Further, a through groove is provided on the side end of the mounting tube close to the clamping block of the protection head. The through groove communicates with the first accommodation cavity. A plug block is installed at the through groove. A third threaded hole 27 is provided on the side end of the plug block. The third threaded hole 27 is adapted to the first threaded hole.

[0013] Further, buffer assemblies are provided at both ends of the sensor. One set of buffer assemblies is fixedly connected to the bottom of the placement tube, and the other set of buffer assemblies is fixedly connected to the bottom of the plug block. The buffer assembly includes a buffer block, a buffer spring, a first telescopic rod, and a second telescopic rod. When the buffer assembly is connected to the placement tube, one end of the buffer spring is fixedly connected to the bottom of the placement tube, the buffer block is fixedly connected to the other end of the buffer spring, the first telescopic rod is fixedly connected to the bottom of the placement tube, one end of the second telescopic rod is sleeved on the first telescopic rod, and the other end of the second telescopic rod is fixedly connected to the buffer block; when the buffer assembly is connected to the plug block, one end of the buffer spring is fixedly connected to the bottom of the plug block, the buffer block is fixedly connected to the other end of the buffer spring, the first telescopic rod is fixedly connected to the bottom of the plug block, one end of the second telescopic rod is sleeved on the first telescopic rod, and the other end of the second telescopic rod is fixedly connected to the buffer block.

[0014] Further, the limiting assembly includes a limiting plate, a limiting block, a limiting screw, and a limiting circular plate. Two limiting screws are threadedly connected to each limiting block. A limiting circular plate is fixedly installed at the bottom of the limiting screw. The limiting block is rotatably connected at the limiting circular plate.

[0015] Explanations for the nouns, conjunctions, or adjectives involved in the above technical solutions are as follows:

[0016] Fixed connection: It refers to the connection where parts or components are fixed without any relative movement. It is divided into two types: detachable connection and non-detachable connection.

[0017] (1) Detachable connection: Parts are fixed together using screws, splines, wedge pins, etc. This connection method can be disassembled during maintenance without damaging the parts. However, the specifications of the connecting parts used must be correct (such as the length of bolts, keys, and wedge pins), and they must be fastened properly.

[0018] (2) Non-detachable connection: It mainly refers to welding, riveting, and tenon fitting, etc. Since it requires forging, sawing, or oxygen cutting to disassemble during maintenance or replacement, the spare parts generally cannot be used twice. At the same time, during connection, attention should be paid to process quality, technical inspection, and remedial measures (such as correction, polishing, etc.).

[0019] Advantages of the present utility model: The device limits the sensor located in the first accommodation cavity through a buffer assembly to prevent the sensor from being damaged due to repeated collisions during the use of the measurement-while-drilling device; the limiting assembly is used to limit and fix the accelerometer in the second accommodation cavity to prevent the accelerometer from being damaged due to repeated collisions during the use of the measurement-while-drilling device. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of the overall device in an embodiment of the present utility model;

[0022] Figure 2 It is a schematic structural diagram of the mounting sleeve rod in an embodiment of the present utility model;

[0023] Figure 3 It is a schematic structural diagram of the protection head in an embodiment of the present utility model;

[0024] Figure 4 It is a schematic structural diagram of the mounting tube in an embodiment of the present utility model;

[0025] Figure 5 It is a cross-sectional view of the mounting tube in an embodiment of the present utility model;

[0026] Figure 6 It is a schematic structural diagram of the limiting assembly in an embodiment of the present utility model;

[0027] Figure 7 It is a schematic structural diagram of the limiting screw and the limiting disc in an embodiment of the present utility model;

[0028] Figure 8 It is a schematic structural diagram of the buffer assembly in an embodiment of the present utility model.

[0029] Reference numerals: 1. Protection head; 2. Mounting tube; 3. Mounting sleeve rod; 4. Placing tube; 5. First accommodation cavity; 6. Sensor; 7. Buffer assembly; 8. Partition board; 9. Second accommodation cavity; 10. Accelerometer; 11. Limiting assembly; 12. Clamping block; 13. Clamping groove; 14. First threaded hole; 15. Second threaded hole; 16. Long screw; 17. Through groove; 18. Plug block; 19. Buffer block; 20. Buffer spring; 21. First telescopic rod; 22. Second telescopic rod; 23. Limiting plate; 24. Limiting block; 25. Limiting screw; 26. Limiting disc; 27. Third threaded hole. Detailed implementation manners

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present utility model.

[0031] A measurement-while-drilling device, as Figures 1 to 8 shown, includes:

[0032] A protection head 1, a mounting pipe 2 and a mounting sleeve rod 3. The protection head 1 is detachably connected to the mounting pipe 2, the mounting pipe 2 is detachably connected to the mounting sleeve rod 3, and the mounting pipe 2 is located between the protection head 1 and the mounting sleeve rod 3;

[0033] In the middle part of the interior of the mounting pipe 2, a placement pipe 4 is fixedly installed. A first accommodation cavity 5 is provided in the placement pipe 4, and a sensor 6 is placed in the first accommodation cavity 5; buffer components 7 are provided at both ends of the sensor 6 in the first accommodation cavity 5; the device limits the sensor 6 located in the first accommodation cavity 5 through the buffer components 7 to prevent the sensor 6 from colliding back and forth and being damaged during the use of the measurement-while-drilling device.

[0034] A partition 8 is fixedly installed on the periphery of the placement pipe 4 inside the mounting pipe 2. A plurality of second accommodation cavities 9 are formed between the inner wall of the mounting pipe 2, the partition 8 and the placement pipe 4; an accelerometer 10 is placed in the second accommodation cavity 9, the accelerometer 10 is placed at the bottom of the second accommodation cavity 9, and a limiting component 11 for fixing the accelerometer is further installed in the second accommodation cavity 9; the limiting component 11 is used to limit and fix the accelerometer 10 in the second accommodation cavity 9 to prevent the accelerometer 10 from colliding back and forth and being damaged during the use of the measurement-while-drilling device.

[0035] As a preferred solution of the present utility model, clamping blocks 12 are fixedly installed at both ends of the mounting pipe 2, clamping grooves 13 are opened at one ends of the protection head 1 and the mounting sleeve rod 3, and the clamping blocks 12 are adapted to the clamping grooves 13.

[0036] As a preferred solution of the present utility model, a first threaded hole 14 is opened at the side end of the clamping block 12, second threaded holes 15 are opened at the side ends of the protection head 1 and the mounting sleeve rod 3, the first threaded hole 14 is adapted to the second threaded hole 15, and the protection head 1 and the mounting pipe 2, and the mounting sleeve rod 3 and the mounting pipe 2 are detachably connected through long screws 16.

[0037] As a preferred embodiment of the present utility model, a through groove 17 is formed at the side end of the installation pipe 2 close to the clamping block 12 of the protection head 1. The through groove 17 communicates with the first accommodation cavity 5. A plug block 18 is installed at the through groove 17. A third threaded hole 27 is formed at the side end of the plug block 18, and the third threaded hole 27 is adapted to the first threaded hole 14. The through groove 17 and the plug block 18 are mainly provided to facilitate the placement of the sensor 6 into the first accommodation cavity 5.

[0038] As a preferred embodiment of the present utility model, buffer assemblies 7 are provided at both ends of the sensor 6. One of the buffer assemblies 7 is fixedly connected to the bottom of the placement pipe 4, and the other buffer assembly 7 is fixedly connected to the bottom of the plug block 18. The buffer assembly 7 includes a buffer block 19, a buffer spring 20, a first telescopic rod 21, and a second telescopic rod 22. When the buffer assembly 7 is connected to the placement pipe 4, one end of the buffer spring 20 is fixedly connected to the bottom of the placement pipe 4, the buffer block 19 is fixedly connected to the other end of the buffer spring 20, the first telescopic rod 21 is fixedly connected to the bottom of the placement pipe 4, one end of the second telescopic rod 22 is sleeved on the first telescopic rod 21, and the other end of the second telescopic rod 22 is fixedly connected to the buffer block 19. When the buffer assembly 7 is connected to the plug block 18, one end of the buffer spring 20 is fixedly connected to the bottom of the plug block 18, the buffer block 19 is fixedly connected to the other end of the buffer spring 20, the first telescopic rod 21 is fixedly connected to the bottom of the plug block 18, one end of the second telescopic rod 22 is sleeved on the first telescopic rod 21, and the other end of the second telescopic rod 22 is fixedly connected to the buffer block 19. The device limits the sensor 6 located in the first accommodation cavity 5 through the buffer assembly 7 to prevent the sensor 6 from colliding back and forth and being damaged during the use of the measurement-while-drilling device. When the sensor 6 is installed, first, the plug block 18 is pulled out from the through groove 17, and one of the buffer assemblies 7 is pulled out from the first accommodation cavity 5. Then, the sensor 6 is placed into the first accommodation cavity 5, and then the plug block 18 is re-inserted into the through groove 17 to limit the sensor 6 through the two buffer assemblies 7.

[0039] As a preferred embodiment of the present utility model, the limiting component 11 includes a limiting plate 23, a limiting block 24, a limiting screw 25 and a limiting disc 26. Two limiting screws 25 are threadedly connected to each limiting block 24. The bottom of the limiting screw 25 is fixedly installed with a limiting disc 26, and the limiting disc 26 is rotatably connected to the limiting block 24. The limiting component 11 is mainly used to limit and fix the accelerometer 10 in the second accommodation cavity 9 to prevent the accelerometer 10 from colliding back and forth and being damaged when the measurement-while-drilling device is in use. Specifically, when the accelerometer 10 is installed in the second accommodation cavity 9, the limiting plate 23 is placed in the second accommodation cavity 9, the bottom of the limiting plate 23 is attached to the upper end of the partition plate 8, and then the limiting screw 25 is rotated to drive the limiting block 24 to move downward through the limiting screw 25, so that the lower end of the limiting block 24 is attached to the accelerometer 10.

[0040] It should be noted here that when the protective head 1 is connected to the mounting tube 2, as shown in the figure, the protruding part at the end of the protective head 1 is attached to the side end of the limiting plate 23, so that the limiting plate 23 can be fixed between the protective head 1 and the mounting tube 2, thereby realizing the limiting and fixing of the accelerometer by the limiting component 11.

[0041] In the description of this specification, the descriptions with reference to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. 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 can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. A measurement-while-drilling device, characterized in that, Including: A protective head (1), an installation pipe (2), and an installation sleeve rod (3). The protective head (1) is detachably connected to the installation pipe (2), the installation pipe (2) is detachably connected to the installation sleeve rod (3), and the installation pipe (2) is located between the protective head (1) and the installation sleeve rod (3); In the middle part inside the installation pipe (2), a placement pipe (4) is fixedly installed. A first accommodation cavity (5) is provided inside the placement pipe (4), and a sensor (6) is placed in the first accommodation cavity (5); buffer components (7) are provided at both ends of the sensor (6) in the first accommodation cavity (5); Inside the installation pipe (2) and around the placement pipe (4), a partition (8) is fixedly installed. A plurality of second accommodation cavities (9) are formed between the inner wall of the installation pipe (2), the partition (8), and the placement pipe (4); an accelerometer (10) is placed in the second accommodation cavity (9), the accelerometer (10) is placed at the bottom of the second accommodation cavity (9), and a limiting component (11) for fixing the accelerometer is further installed in the second accommodation cavity (9).

2. The measurement-while-drilling device according to claim 1, wherein At both ends of the installation pipe (2), clamping blocks (12) are fixedly installed. At one end of the protective head (1) and the installation sleeve rod (3), clamping grooves (13) are opened, and the clamping blocks (12) are adapted to the clamping grooves (13).

3. The measurement-while-drilling device according to claim 2, wherein On the side end of the clamping block (12), a first threaded hole (14) is opened. On the side ends of the protective head (1) and the installation sleeve rod (3), second threaded holes (15) are opened. The first threaded hole (14) is adapted to the second threaded hole (15). Between the protective head (1) and the installation pipe (2), and between the installation sleeve rod (3) and the installation pipe (2), detachable connection is achieved through long screws (16).

4. The measurement-while-drilling device according to claim 3, characterized in that, On the side end of the clamping block (12) of the installation pipe (2) close to the protective head (1), a through groove (17) is opened. The through groove (17) communicates with the first accommodation cavity (5). A plug block (18) is installed at the through groove (17). On the side end of the plug block (18), a third threaded hole (27) is opened, and the third threaded hole (27) is adapted to the first threaded hole (14).

5. A measurement-while-drilling device according to claim 4, wherein, Buffer components (7) are located at both ends of the sensor (6). One set of buffer components (7) is fixedly connected to the bottom of the placement tube (4), and the other set of buffer components (7) is fixedly connected to the bottom of the plug block (18). The buffer component (7) includes a buffer block (19), a buffer spring (20), a first telescopic rod (21), and a second telescopic rod (22). When the buffer component (7) is connected to the placement tube (4), one end of the buffer spring (20) is fixedly connected to the bottom of the placement tube (4), the buffer block (19) is fixedly connected to the other end of the buffer spring (20), the first telescopic rod (21) is fixedly connected to the bottom of the placement tube (4), one end of the second telescopic rod (22) is sleeved on the first telescopic rod (21), and the other end of the second telescopic rod (22) is fixedly connected to the buffer block (19); when the buffer component (7) is connected to the plug block (18), one end of the buffer spring (20) is fixedly connected to the bottom of the plug block (18), the buffer block (19) is fixedly connected to the other end of the buffer spring (20), the first telescopic rod (21) is fixedly connected to the bottom of the plug block (18), one end of the second telescopic rod (22) is sleeved on the first telescopic rod (21), and the other end of the second telescopic rod (22) is fixedly connected to the buffer block (19).

6. The measurement-while-drilling device according to claim 1, characterized in that, The limiting component (11) includes a limiting plate (23), a limiting block (24), a limiting screw (25), and a limiting disc (26). Two limiting screws (25) are threadedly connected to each limiting block (24). A limiting disc (26) is fixedly installed at the bottom of the limiting screw (25), and the limiting block (24) is rotatably connected at the limiting disc (26).

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