A measurement-while-drilling device

Abstract

This utility model discloses a measurement-while-drilling (MSW) device, belonging to the field of MSW devices. It includes a protective shell, with a base inside the shell's cavity. A groove is formed at the center of the upper surface of the base, and a short rod is placed inside the groove. A second bevel gear is sleeved on the outer ring of the short rod. Several limiting grooves are distributed in a ring on the upper surface of the base, and a reciprocating lead screw is placed inside each limiting groove. A threaded sleeve is fitted on the outer ring of the reciprocating lead screw. Through the coordinated use of these devices, the integrity of the internal precision sensors and circuit modules is ensured, thereby guaranteeing the accuracy of data acquisition and the stability of signal transmission during downhole operations. This reduces serious consequences such as signal interruptions and false alarms caused by component damage, lowers the equipment repair rate and the probability of operational interruptions, and improves the overall safety and reliability of use.

Description

Technical Field

[0001] This utility model relates to the technical field of measurement while drilling devices, specifically a measurement while drilling device. Background Technology

[0002] Measurement While Drilling (MWD) is a specialized measurement and control device that acquires and transmits downhole engineering parameters in real time during the drilling process. It is mainly used in engineering fields such as oil and gas, geological exploration, and trenchless directional drilling. This device is usually integrated into the drill string, close to the drill bit, and can continuously monitor key data such as well inclination angle, azimuth angle, tool face angle, bottom hole temperature, and pressure without stopping drilling. It transmits the data to the surface control system in real time through mud pulses, electromagnetic waves, or wired transmission, providing a basis for precise control of the drilling trajectory.

[0003] An investigation revealed that a Chinese utility model patent discloses a measurement-while-drilling device (publication number: CN221703710 U), which includes a connecting pipe. Both ends of the connecting pipe are fixedly connected to flanges. The connecting pipe has a hollow structure, with connecting threads at both ends of the inner wall. An equipment compartment for installing equipment is also provided in the middle of the inner wall. A drill bit is threadedly connected to one end of the connecting pipe. The cutting edge of the drill bit has multiple sets of outwardly protruding curved cutting edges, and a channel is opened in the gap between adjacent cutting edges. The shank of the drill bit has a flange that is consistent with that of the connecting pipe. Connecting bolts are also installed directly between the two flanges. The channel converges in the shank and communicates with the inside of the connecting pipe.

[0004] While the aforementioned patent, through its structural design, can improve the accuracy of detection results and is simple and easy to use, the measurement while drilling device is subjected to external impacts during transportation, which can damage the internal measurement units. This severely affects the accuracy of data acquisition and the stability of signal transmission during downhole operations. Furthermore, once internal components are damaged, the device will directly malfunction, requiring at least factory repairs and extended operation cycles, or even signal interruptions or false alarms during drilling, leading to well control accidents or deviations from the designed wellbore trajectory, posing significant risks to the safety and economy of the entire drilling project.

[0005] Therefore, this utility model provides a drilling measurement device to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved This invention provides a drilling measurement device, which aims to solve the problems mentioned in the background art.

[0007] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a measurement while drilling device, comprising a protective shell, a base disposed within the inner cavity of the protective shell, a groove formed at the center of the upper surface of the base, a short rod disposed within the inner cavity of the groove, a second bevel gear sleeved on the outer ring of the short rod, a plurality of limiting grooves distributed in a ring on the upper surface of the base, a reciprocating lead screw disposed within the inner cavity of the limiting groove, a threaded sleeve sleeved on the outer ring of the reciprocating lead screw, a fixing arc plate fixedly connected to the top of the threaded sleeve, one end of the reciprocating lead screw extending through the inner wall of an adjacent limiting groove to the inner cavity of the groove and fixedly connected to a first bevel gear, and a main body of the measurement while drilling device disposed above the base.

[0008] As a preferred technical solution of this application, a second motor is fixedly installed at the bottom of the base, and the bottom end of the short rod passes through the bottom of the inner cavity of the groove and is fixedly connected to the output shaft of the second motor.

[0009] As a preferred technical solution of this application, the other end of the reciprocating screw is rotatably connected to the inner wall of the corresponding limiting groove through a rotating shaft, and multiple first bevel gears mesh with second bevel gears. One side of the fixed arc plate is in contact with the outer wall of the adjacent drilling measurement device body.

[0010] As a preferred technical solution of this application, the inner surface wall of the protective shell is provided with grooves on both sides, and the inner cavity of the groove is slidably connected to a slider. One of the grooves is provided with a threaded rod in its inner cavity, and the other groove is provided with a limit rod in its inner cavity.

[0011] As a preferred technical solution of this application, the bottom of the protective shell is provided with an installation groove, and a motor is fixedly installed on one side of the inner wall of the installation groove. The top end of the threaded rod passes through the bottom of the corresponding slider through the thread. The top end of the threaded rod is rotatably connected to the top of the inner cavity of the adjacent slide groove through a rotating shaft. The bottom end of the threaded rod passes through the inner wall of the adjacent slide groove and is fixedly connected to the output shaft of the motor.

[0012] As a preferred technical solution of this application, the top end of the limiting rod passes through the bottom of the adjacent slider and is fixedly connected to the top of the inner cavity of the corresponding slide groove, and the bottom end of the limiting rod is fixedly connected to the bottom of the inner cavity of the corresponding slide groove.

[0013] As a preferred technical solution of this application, the inner cavity of the limiting groove is provided with a round rod, one end of the round rod passes through the side of the corresponding threaded sleeve and is fixedly connected to the inner wall of the adjacent limiting groove, and the other end of the round rod is fixedly connected to the inner wall of the adjacent limiting groove.

[0014] (III) Beneficial Effects By using a base, fixed arc plate, reciprocating lead screw, first bevel gear, second bevel gear, screw sleeve, and motor II, the main body of the measurement while drilling device is housed inside a protective shell, preventing it from being directly exposed to the external environment. This reduces the risk of damage caused by collisions, drops, or compression during handling, hoisting, or transportation, and ensures the integrity of the internal precision sensors and circuit modules. Consequently, it ensures the accuracy of data acquisition and the stability of signal transmission during downhole operations, reduces serious consequences such as signal interruptions and false alarms caused by component damage, lowers the equipment repair rate and the probability of operational interruptions, and improves the overall safety and reliability of use. The design of the motor, slide, threaded rod, and slider allows the base to move inside the protective shell, facilitating the removal or insertion of the main body of the measurement while drilling device (MSD) inside the protective shell. This enables rapid docking and installation with the drilling tools, reduces the labor intensity of operators, and improves the efficiency and safety of equipment deployment. It is suitable for drilling sites with frequent relocation and complex operating environments. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of a drilling measurement device; Figure 2 This is a schematic diagram of the structure of a motor in a drilling measurement device; Figure 3 This is a cross-sectional view of the protective shell in a measurement-while-drilling device; Figure 4 This is a schematic diagram of a fixed arc plate in a drilling measurement device; Figure 5 In a type of measurement while drilling device Figure 4 Enlarged view of point A.

[0016] In the picture: 1. Protective shell; 2. Base; 3. Fixed arc plate; 4. Main body of the measurement while drilling device; 5. Mounting slot; 6. Motor 1; 7. Slide groove; 8. Threaded rod; 9. Limiting rod; 10. Slider; 11. Motor 2; 12. Limiting groove; 13. Groove; 14. Reciprocating lead screw; 15. First bevel gear; 16. Second bevel gear; 17. Screw sleeve; 18. Round rod. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] This utility model provides a measurement-while-drilling device, such as... Figure 1 - Figure 5 As shown, the technical solution includes a protective shell 1, a base 2 is provided in the inner cavity of the protective shell 1, a groove 13 is provided at the center of the upper surface of the base 2, a short rod is provided in the inner cavity of the groove 13, a second bevel gear 16 is sleeved on the outer ring of the short rod, a number of limiting grooves 12 are distributed in a ring on the upper surface of the base 2, a reciprocating screw 14 is provided in the inner cavity of the limiting groove 12, a threaded sleeve 17 is sleeved on the outer ring of the reciprocating screw 14, a fixing arc plate 3 is fixedly connected to the top of the threaded sleeve 17, one end of the reciprocating screw 14 extends through the inner wall of the adjacent limiting groove 12 to the inner cavity of the groove 13 and is fixedly connected to the first bevel gear 15, and a drilling measurement device body 4 is provided above the base 2.

[0019] A second motor 11 is fixedly installed at the bottom of the base 2. The bottom end of the short rod passes through the bottom of the inner cavity of the groove 13 and is fixedly connected to the output shaft of the second motor 11. After the second motor 11 is started, its output shaft drives the short rod to rotate. The short rod drives the second bevel gear 16 to rotate. The second bevel gear 16 meshes with multiple first bevel gears 15 to drive the reciprocating screws 14 to rotate synchronously. The rotation of the reciprocating screws 14 drives the screw sleeve 17 to move axially in the limiting groove 12, thereby driving the fixed arc plate 3 to clamp or loosen the main body 4 of the drilling measurement device, realizing multi-point synchronous automatic clamping, improving the stability of clamping and the convenience of operation.

[0020] The other end of the reciprocating screw 14 is rotatably connected to the inner wall of the corresponding limiting groove 12 via a rotating shaft. Multiple first bevel gears 15 mesh with second bevel gears 16. One side of the fixed arc plate 3 is in contact with the outer wall of the adjacent measurement-while-drilling device body 4. The reciprocating screw 14 rotates, causing the screw sleeve 17 to drive the fixed arc plate 3 to move synchronously to the center or centrifugally. One side of the fixed arc plate 3 is in contact with the outer wall of the measurement-while-drilling device body 4, achieving a multi-directional uniform clamping effect. This ensures symmetrical force during clamping, prevents the measurement-while-drilling device body 4 from shifting or experiencing local stress concentration, and improves the reliability and centering accuracy of the clamping process.

[0021] The inner surface of the protective shell 1 is provided with grooves 7 on both sides. The inner cavity of the groove 7 is slidably connected to a slider 10. One groove 7 has a threaded rod 8 in its inner cavity, and the other groove 7 has a limit rod 9 in its inner cavity. The threaded rod 8 is threadedly engaged with a slider 10 to make it move along the direction of the groove 7. At the same time, the limit rod 9 provides lateral restraint to a slider 10 to prevent it from rotating with the threaded rod 8. The slider 10 drives the base 2 to slide smoothly back and forth inside the protective shell 1, achieving the effect of controlling the base 2 to move in a straight line, and ensuring the stability and guidance of the main body 4 of the drilling measurement device during the process of entering and exiting the protective shell 1.

[0022] The bottom of the protective shell 1 is provided with a mounting groove 5. A motor 6 is fixedly installed on the inner wall of one side of the mounting groove 5. The top end of the threaded rod 8 passes through the bottom of the corresponding slider 10 through a thread. The top end of the threaded rod 8 is rotatably connected to the top of the inner cavity of the adjacent slide groove 7 through a rotating shaft. The bottom end of the threaded rod 8 passes through the inner wall of the adjacent slide groove 7 and is fixedly connected to the output shaft of the motor 6. Through the setting of the motor 6, the output shaft of the motor 6 drives the threaded rod 8 to rotate, giving the threaded rod 8 the power to rotate.

[0023] The top of the limiting rod 9 passes through the bottom of the adjacent slider 10 and is fixedly connected to the top of the inner cavity of the corresponding slide groove 7. The bottom of the limiting rod 9 is fixedly connected to the bottom of the inner cavity of the corresponding slide groove 7. The setting of the limiting rod 9 guides and prevents the movement of the slider 10, so that it can only slide along the limiting rod 9. With the driving action of the threaded rod 8, the stability of the slider 10 is enhanced, effectively preventing swaying or tilting caused by unilateral force or vibration, and ensuring that the base 2 remains horizontal during reciprocating movement.

[0024] The inner cavity of the limiting groove 12 is provided with a round rod 18. One end of the round rod 18 passes through one side of the corresponding threaded sleeve 17 and is fixedly connected to the inner wall of the adjacent limiting groove 12. The other end of the round rod 18 is fixedly connected to the inner wall of the adjacent limiting groove 12. The round rod 18 provides lateral guide support for the threaded sleeve 17, restricting the threaded sleeve 17 to move only along the axial direction of the reciprocating screw 14 and not rotate with it. In conjunction with the rotation of the reciprocating screw 14, the effect of ensuring the smooth linear movement of the threaded sleeve 17 is achieved.

[0025] Specifically: The operator places the main body 4 of the measurement-while-drilling device above the base 2 and in the area between the fixed arc plates 3. Then, the second motor 11 is started. The output shaft of the second motor 11 drives the short rod to rotate. The rotation of the short rod is transmitted to the second bevel gear 16, causing it to rotate synchronously. The second bevel gear 16 meshes with the first bevel gear 15, thereby driving the first bevel gear 15 to rotate. The reciprocating screw 14 rotates accordingly. The threaded sleeve 17 moves axially under the drive of the reciprocating screw 14. Because the sleeve 17 is guided laterally by the round rod 18, it is prevented from rotating and can only make linear displacement. This causes the fixed arc plates 3, which are fixedly connected to it, to move closer to each other in the horizontal direction, thereby clamping and fixing the main body 4 of the measurement-while-drilling device. The operator then starts the first motor 6. The output shaft of the first motor 6... The drive threaded rod 8 rotates, and the slider 10, which is threaded to the outside of the threaded rod 8, moves linearly along the inner cavity of the slide groove 7 under the action of the thread. Since the slider 10 is fixedly connected to the base 2, the base 2 slides together with the slider 10 inside the protective shell 1, driving the main body 4 of the drilling measurement device, which has been clamped by the fixed arc plate 3, to move until it is completely inside the protective shell 1, forming a transport or storage state. When the device needs to be used, the motor 6 is started to move the base 2 and the main body 4 of the drilling measurement device from the protective shell 1 to the working position. Then, the motor 11 is controlled to reverse, so that the first bevel gear 15 and the second bevel gear 16 rotate in opposite directions, driving the reciprocating screw 14 to rotate in opposite directions, thereby causing the screw sleeve 17 to move in opposite directions, driving the fixed arc plate 3 to move away from each other, and releasing the clamping of the main body 4 of the drilling measurement device.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A measurement-while-drilling device, comprising a protective housing (1), characterized in that: The protective shell (1) has a base (2) in its inner cavity. A groove (13) is provided at the center of the upper surface of the base (2). A short rod is provided in the inner cavity of the groove (13). A second bevel gear (16) is sleeved on the outer ring of the short rod. Several limiting grooves (12) are distributed in a ring on the upper surface of the base (2). A reciprocating screw (14) is provided in the inner cavity of the limiting groove (12). A threaded sleeve (17) is sleeved on the outer ring of the reciprocating screw (14). A fixed arc plate (3) is fixedly connected to the top of the threaded sleeve (17). One end of the reciprocating screw (14) extends through the inner wall of the adjacent limiting groove (12) to the inner cavity of the groove (13) and is fixedly connected to the first bevel gear (15). The main body (4) of the drilling measurement device is provided above the base (2).

2. The measurement-while-drilling device according to claim 1, characterized in that: The bottom of the base (2) is fixedly installed with motor 2 (11), and the bottom end of the short rod passes through the bottom of the inner cavity of the groove (13) and is fixedly connected to the output shaft of motor 2 (11).

3. The measurement-while-drilling device according to claim 1, characterized in that: The other end of the reciprocating screw (14) is rotatably connected to the inner wall of the corresponding limiting groove (12) through a rotating shaft. Multiple first bevel gears (15) mesh with second bevel gears (16). One side of the fixed arc plate (3) is in contact with the outer wall of the adjacent drilling measurement device body (4).

4. The measurement-while-drilling device according to claim 1, characterized in that: The inner surface of the protective shell (1) is provided with grooves (7) on both sides. The inner cavity of the groove (7) is slidably connected to a slider (10). One of the grooves (7) is provided with a threaded rod (8) in its inner cavity, and the other groove (7) is provided with a limit rod (9).

5. The measurement-while-drilling device according to claim 4, characterized in that: The bottom of the protective shell (1) is provided with an installation groove (5). A motor (6) is fixedly installed on one side of the inner wall of the installation groove (5). The top end of the threaded rod (8) passes through the bottom of the corresponding slider (10) through a thread. The top end of the threaded rod (8) is rotatably connected to the top of the inner cavity of the adjacent slide groove (7) through a rotating shaft. The bottom end of the threaded rod (8) passes through the inner wall of the adjacent slide groove (7) and is fixedly connected to the output shaft of the motor (6).

6. The measurement-while-drilling device according to claim 5, characterized in that: The top end of the limiting rod (9) passes through the bottom of the adjacent slider (10) and is fixedly connected to the top of the inner cavity of the corresponding slide groove (7), and the bottom end of the limiting rod (9) is fixedly connected to the bottom of the inner cavity of the corresponding slide groove (7).

7. The measurement-while-drilling device according to claim 6, characterized in that: The inner cavity of the limiting groove (12) is provided with a round rod (18). One end of the round rod (18) passes through one side of the corresponding threaded sleeve (17) and is fixedly connected to the inner wall of the adjacent limiting groove (12). The other end of the round rod (18) is fixedly connected to the inner wall of the adjacent limiting groove (12).

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