Probe tube of while-drilling gamma spectrum logger

Abstract

The invention relates to the technical field of measurement while drilling, and discloses a while-drilling gamma spectrum logger probe tube which comprises a main body. The spring on the inner wall of the annular plate can contract and accumulate potential energy under the pushing of the annular plate, at the moment, the whole annular plate can deform into an oval shape under the action of reverse thrust, and the extending part of the spring enables the spring connected with the extending part to extend and accumulate potential energy; then, when the device is separated from the inner wall of the detection hole through rebounding of the annular plate, the overall state of the annular plate is changed into a circle under reset potential energy of springs in different states, and the effect of the angle of a conveying wire and the gravity of the device when the device moves downwards in the detection hole is reduced; the condition that the whole device swings and collides with the inner wall of the detection hole is avoided, the abrasion degree of the detection tube in the moving process is reduced, and the overall quality of the gamma probe in the detection tube in the detection process is improved.

Description

Technical Field

[0001] This invention relates to the field of measurement while drilling technology, specifically to a gamma spectral logging tool probe for drilling. Background Technology

[0002] The gamma ray logging-while-drilling (GLOD) probe is a key downhole logging unit integrated near the drill bit on the drill collar. Its core function is to measure the total amount of natural gamma rays and energy spectrum information of the formation rocks in real time during the drilling process. By analyzing the content of characteristic radioactive elements such as uranium, thorium, and potassium, it can simultaneously identify lithology and conduct formation comparison and evaluation.

[0003] During the use of this device, the wire at the top of the device is first connected to the power supply and the device is started. Then, the operator places the device vertically above the detection hole and moves it gradually into the detection hole using the wire. As the device moves, it will use the gamma probe to detect the inner wall of the detection hole. When the device moves downward inside the detection hole, due to the angle of the wire and its own weight, the device is prone to swinging and colliding with the inner wall of the detection hole. This increases the wear of the probe tube during movement and affects the overall quality of the gamma probe inside the probe tube during detection. Summary of the Invention

[0004] The purpose of this invention is to provide a logging-while-drilling gamma spectroscopy probe to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to a logging-while-drilling gamma spectroscopy (LSD) probe, comprising a main body and further comprising:

[0007] The buffer mechanism is installed inside the main body to reduce the force when the main body comes into contact with the inner wall of the exploration tunnel;

[0008] An auxiliary mechanism is installed on the inner wall of the buffer mechanism to reset it after deformation.

[0009] Furthermore, the main body includes:

[0010] The detection components are installed at the top and bottom of the main body and are used to detect the inside of the detection hole;

[0011] The oscillating component is installed inside the detection component and is used to oscillate when the detection component moves.

[0012] Furthermore, the buffer mechanism includes:

[0013] A movable component is installed inside the swing component and is used to move when the swing component moves;

[0014] The retraction assembly is installed on the side wall of the movable assembly and is used to retract when in contact with the inner wall of the probe hole.

[0015] Furthermore, the auxiliary mechanisms include:

[0016] The push component is installed on the inner wall of the shrink component and is used to apply a thrust to the shrink component when it is reset.

[0017] Furthermore, the detection component includes a probe tube fixedly connected to the top and bottom of the main body, and the outer surface of the detection component is provided with several sliding grooves;

[0018] The top of the probe is fixedly connected with a wire.

[0019] Furthermore, the swing assembly includes a sliding block slidably connected inside the sliding groove, a swing plate rotatably connected inside the sliding block, and a moving groove provided on the side wall of the swing plate;

[0020] The initial position of the sliding block is located in the middle of the sliding groove.

[0021] Furthermore, the moving component includes a moving block that is slidably connected inside the moving slot, and an arc-shaped plate is slidably connected inside the moving block.

[0022] Furthermore, the bottom of several arc-shaped plates is rotatably connected to a fixing ring, and the inner wall of the fixing ring is fixedly connected to the outer surface of the probe.

[0023] Furthermore, the shrinking assembly includes an annular plate rotatably connected to a plurality of swing plates at opposite ends, and a plurality of springs are fixedly connected to the inner wall of the annular plate.

[0024] The end of the spring away from the annular plate is fixedly connected to the side wall of the arc-shaped plate, and the annular plate as a whole is elastically designed.

[0025] Furthermore, the actuating component includes several fixing blocks fixedly connected to the outer surface of the probe, and the sidewalls of the fixing blocks are rotatably connected to U-shaped plates;

[0026] In this design, several U-shaped plates are rotatably connected to the inner wall of an annular plate at opposite ends, and the U-shaped plates are elastically configured as a whole.

[0027] The present invention has the following beneficial effects:

[0028] (1) In this invention, when the part of the annular plate that contacts the inner wall of the detection hole contracts, the spring on the inner wall of the annular plate will contract and accumulate potential energy under the push of the annular plate. At this time, the annular plate as a whole will deform into an ellipse under the action of the counter-thrust, and the spring extension part will cause the spring connected to it to extend and accumulate potential energy. Afterwards, when the device rebounds and separates from the inner wall of the detection hole through the annular plate, the annular plate as a whole will become circular under the reset potential energy of the spring in different states. This reduces the situation where the device swings and collides with the inner wall of the detection hole due to the angle of the transmission wire and its own gravity when the device moves downward in the detection hole. This reduces the wear of the probe when it moves and improves the overall quality of the gamma probe inside the probe when it is performing detection.

[0029] (2) In this invention, after the annular plate is separated from the inner wall of the detection hole, the contracting and extending spring will first drive the arc plate to reset. Then, part of the force on the arc plate will be transmitted to the outer surface of the probe tube, thereby resetting the probe tube to a vertical state. This reduces the situation where the probe tube is subjected to a large force when the spring resets and drives the probe tube to reset, which would cause the probe tube to swing back and forth when descending. This keeps the probe tube stable when moving and improves the efficiency of the gamma probe inside the probe tube when performing detection.

[0030] (3) In this invention, when the remaining part of the annular plate extends, the sliding block is pulled down inside the sliding groove by the swing plate. At the same time as the swing plate moves, the arc plate is pulled to swing by the moving block located inside the moving groove, so that the annular plate in the extended part remains horizontal when pushed by the spring. This reduces the situation where the annular plate tilts due to the different thrust angle caused by the different connection points with the spring when the spring pushes the annular plate to extend and deforms. This keeps the spring stable and further improves the overall quality of the gamma probe inside the probe tube when performing detection.

[0031] (4) In this invention, the reaction force on the annular plate is dispersed under the elastic potential energy of the U-shaped plate contraction. The remaining U-shaped plates will be extended under the pull of the deformed annular plate. Then, when the annular plate is reset, several U-shaped plates will apply force to the probe from different directions during the reset, thereby correcting the probe during the reset. This enhances the reset effect of the probe by the annular plate and spring, allowing the probe to perform better detection and further improving the efficiency of the gamma probe inside the probe during detection.

[0032] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 This is a schematic diagram of the overall partial cross-sectional structure of the present invention;

[0036] Figure 3 This is a partial cross-sectional view of the swing assembly of the present invention;

[0037] Figure 4 This is a partial cross-sectional view of the moving component of the present invention;

[0038] Figure 5 This is a partial cross-sectional view of the shrinkage component of the present invention;

[0039] Figure 6 This is a partial cross-sectional view of the component driving the present invention;

[0040] Figure 7 This is a diagram showing the connection relationships of some components of the present invention;

[0041] Figure 8 This is a partial plan view of the moving component of the present invention.

[0042] The attached diagram lists the components represented by each number as follows:

[0043] In the diagram: 1. Main body; 11. Detection component; 111. Probe tube; 112. Sliding groove; 12. Swing component; 121. Sliding block; 122. Swing plate; 123. Moving groove; 2. Buffer mechanism; 21. Moving component; 211. Moving block; 212. Arc plate; 213. Fixing ring; 22. Retraction component; 221. Annular plate; 222. Spring; 3. Auxiliary mechanism; 31. Pushing component; 311. Fixing block; 312. U-shaped plate. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Please see Figures 1-8As shown, the present invention is a logging-while-drilling gamma spectroscopy probe, comprising a main body 1, and further comprising:

[0046] Buffer mechanism 2 is installed inside the main body 1 to reduce the force when the main body 1 comes into contact with the inner wall of the detection tunnel.

[0047] Auxiliary mechanism 3 is installed on the inner wall of buffer mechanism 2 and is used to reset buffer mechanism 2 after deformation.

[0048] Entity 1 includes:

[0049] Detection component 11 is installed at the top and bottom of the main body 1 and is used to detect the inside of the detection hole;

[0050] The swing component 12 is installed inside the detection component 11 and is used to swing when the detection component 11 moves.

[0051] Buffer mechanism 2 includes:

[0052] The movable component 21 is installed inside the swing component 12 and is used to move when the swing component 12 moves;

[0053] The retraction component 22 is installed on the side wall of the movable component 21 and is used to retract when in contact with the inner wall of the probe hole.

[0054] Auxiliary mechanism 3 includes:

[0055] A push component 31 is installed on the inner wall of the shrinking component 22 and is used to apply a thrust to the shrinking component 22 when it is reset.

[0056] The detection component 11 includes a probe 111 fixedly connected to the top and bottom of the main body 1, and a plurality of sliding grooves 112 are provided on the outer surface of the detection component 11.

[0057] The probe tube 111 is fixedly connected to a wire at its top. The spring 222, which completes the contraction and extension, will first drive the arc plate 212 to reset. Then, part of the force on the arc plate 212 will be transmitted to the outer surface of the probe tube 111, thereby resetting the probe tube 111 to a vertical state.

[0058] The swing assembly 12 includes a sliding block 121 that is slidably connected inside the sliding groove 112. A swing plate 122 is rotatably connected inside the sliding block 121. A moving groove 123 is provided on the side wall of the swing plate 122.

[0059] The initial position of the sliding block 121 is located in the middle of the sliding groove 112. When the annular plate 221 contracts in contact with the detection hole, the annular plate 221 will push the swing plate 122 to move through the top. When the swing plate 122 moves, it will push the sliding block 121 at the top to slide upward inside the sliding groove 112.

[0060] The moving component 21 includes a moving block 211 slidably connected inside the moving groove 123. An arc plate 212 is slidably connected inside the moving block 211. When the annular plate 221 is pushed by a counter-thrust to the spring 222 on its inner wall to contract and extend, the contracted annular plate 221 will exert a thrust on the arc plate 212 connected to it. After the arc plate 212 is pushed, it will swing around the fixed ring 213 toward the probe 111.

[0061] Several arc-shaped plates 212 are rotatably connected to a fixing ring 213 at their bottom. The inner wall of the fixing ring 213 is fixedly connected to the outer surface of the probe 111. The remaining extended annular plates 221 will pull the arc-shaped plates 212 to swing around the fixing ring 213 towards the annular plates 221. After the annular plates 221 are separated from the inner wall of the probe hole, the contracting and extending springs 222 will first drive the arc-shaped plates 212 to reset.

[0062] The shrinking assembly 22 includes an annular plate 221 rotatably connected to a plurality of swing plates 122 at one end away from each other, and a plurality of springs 222 are fixedly connected to the inner wall of the annular plate 221.

[0063] Among them, the end of the spring 222 away from the annular plate 221 is fixedly connected to the side wall of the arc plate 212. The annular plate 221 is elastically configured. When the part of the annular plate 221 in contact with the inner wall of the detection hole contracts, the spring 222 on the inner wall of the annular plate 221 will contract and accumulate potential energy under the push of the annular plate 221. At this time, the annular plate 221 will deform into an ellipse under the action of the counter-thrust.

[0064] The pushing component 31 includes several fixing blocks 311 fixedly connected to the outer surface of the probe 111, and a U-shaped plate 312 is rotatably connected to the side wall of the fixing block 311;

[0065] Among them, the ends of several U-shaped plates 312 that are far apart from each other are rotatably connected to the inner wall of the annular plate 221. The U-shaped plates 312 are elastically configured. When the annular plate 221 deforms, its inner wall will exert a force on several U-shaped plates 312. At this time, the U-shaped plates 312 that are close to the inner wall of the detection hole will contract under the push of the contracting annular plate 221, thereby dispersing the reaction force on the annular plate 221 under the elastic potential energy of the contraction of the U-shaped plates 312.

[0066] In use, first connect the wire at the top of the device to the power supply and start the device. Then, the staff will place the device vertically above the detection hole and move it gradually into the detection hole using the wire. As the device moves, the activated device will conduct phased detections of the inner wall of the detection hole through the gamma probe inside the main body 1. At the same time, the information collected by the main body 1 will be stored inside the probe tube 111, thus completing the detection process of the detection hole through the gamma probe inside the main body 1.

[0067] When the staff lowers the device into the detection hole using a wire, the wire is at an angle and the device is vertical. As it moves downwards, it oscillates inside the detection hole due to gravity and the force of the wire. During this oscillation, the spring 222 on the outer surface of the probe 111 contacts the inner wall of the detection hole and then contracts under the opposing force of the inner wall. When the annular plate 221 contracts at the point of contact with the inner wall, the spring 222 on the inner wall of the annular plate 221 contracts under the push of the annular plate 221, accumulating potential energy. At this time, the annular plate 221... Under the action of the counter-thrust, the whole will deform into an ellipse, and the extended part of the spring 222 will cause the connected spring 222 to extend and accumulate potential energy. Then, when the device rebounds and separates from the inner wall of the detection hole through the ring plate 221, the whole ring plate 221 will become circular under the reset potential energy of the spring 222 in different states. This reduces the situation where the whole device swings and collides with the inner wall of the detection hole due to the angle of the transmission wire and its own gravity when the device moves downward in the detection hole. This reduces the wear of the probe 111 during movement and improves the overall quality of the gamma probe inside the probe 111 during detection.

[0068] When the annular plate 221 is pushed by the counterforce to retract and extend the spring 222 on its inner wall, the retracting annular plate 221 applies a thrust to the arcuate plate 212 connected to it. After receiving the thrust, the arcuate plate 212 swings around the fixed ring 213 toward the probe 111. At the same time, the remaining annular plates 221 in the extended state pull the arcuate plate 212 to swing around the fixed ring 213 toward the annular plate 221. After the annular plate 221 detaches from the inner wall of the probe hole, the spring 222 completes its retraction and extension. First, the arc plate 212 will be reset. Then, part of the force on the arc plate 212 will be transmitted to the outer surface of the probe tube 111, so that the probe tube 111 is reset to a vertical state. This reduces the situation where the probe tube 111 is subjected to a large force when the spring 222 resets and drives the probe tube 111 to reset, which would cause the probe tube 111 to swing back and forth when descending. This keeps the probe tube 111 stable when moving and improves the efficiency of the gamma probe inside the probe tube 111 when performing detection.

[0069] When the annular plate 221 retracts at the part in contact with the detection hole, the annular plate 221 moves by pushing the swing plate 122 from the top. As the swing plate 122 moves, it pushes the top sliding block 121 to slide upward inside the sliding groove 112. At the same time, the rest of the annular plate 221 extends under the elastic action. As the rest of the annular plate 221 extends, the swing plate 122 pulls the sliding block 121 to slide downward inside the sliding groove 112. While the swing plate 122 moves, the moving block 211 located inside the moving groove 123 pulls the arc plate 212 to swing, so that the extended part of the annular plate 221 remains horizontal when pushed by the spring 222. This reduces the possibility of the annular plate 221 tilting due to different thrust angles caused by different connection points with the spring 222 when the annular plate 221 is deformed during the extension of the spring 222. This keeps the spring 222 stable and further improves the overall quality of the gamma probe inside the probe tube 111 during detection.

[0070] When the annular plate 221 deforms, its inner wall applies a force to several U-shaped plates 312. At this time, the U-shaped plates 312 closest to the inner wall of the detection hole will contract under the push of the contracting annular plate 221, thereby dispersing the reaction force on the annular plate 221 under the elastic potential energy of the contraction of the U-shaped plates 312. The remaining U-shaped plates 312 will extend under the pull of the deforming annular plate 221. Afterwards, when the annular plate 221 is reset, several U-shaped plates 312 will apply a force to the probe 111 from different directions during the reset, thereby correcting the probe 111 during reset. This enhances the reset effect of the probe 111 through the annular plate 221 and the spring 222, allowing the probe 111 to perform better detection and further improving the efficiency of the gamma probe inside the probe 111 during detection.

[0071] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A logging-while-drilling gamma spectroscopy probe, comprising a main body (1), characterized in that, Also includes: A buffer mechanism (2) is installed inside the main body (1) to reduce the force when the main body (1) comes into contact with the inner wall of the detection hole; The auxiliary mechanism (3) is installed on the inner wall of the buffer mechanism (2) and is used to reset the buffer mechanism (2) after deformation.

2. The probe for a gamma ray spectral logging tool as described in claim 1, characterized in that: The main body (1) includes: The detection component (11) is installed at the top and bottom of the main body (1) for detecting the inside of the detection hole; A swing assembly (12) is installed inside the detection assembly (11) and is used to swing when the detection assembly (11) moves.

3. The probe of the gamma ray spectral logging tool according to claim 2, characterized in that: The buffer mechanism (2) includes: A movable component (21) is installed inside the swing component (12) for moving when the swing component (12) moves; A retraction component (22) is installed on the side wall of the movable component (21) for retracting when in contact with the inner wall of the probe hole.

4. The probe for a gamma ray spectral logging tool as described in claim 3, characterized in that: The auxiliary mechanism (3) includes: A push component (31) is installed on the inner wall of the retraction component (22) to apply a thrust to the retraction component (22) when it is reset.

5. The probe for a gamma ray spectral logging tool as described in claim 4, characterized in that: The detection component (11) includes a probe (111) fixedly connected to the top and bottom of the main body (1), and the outer surface of the detection component (11) is provided with a plurality of sliding grooves (112). The top of the probe (111) is fixedly connected with a wire.

6. The probe for a gamma ray spectral logging tool as described in claim 5, characterized in that: The swing assembly (12) includes a sliding block (121) slidably connected inside the sliding groove (112), and a swing plate (122) is rotatably connected inside the sliding block (121). The side wall of the swing plate (122) is provided with a moving groove (123). The initial position of the sliding block (121) is located in the middle of the sliding groove (112).

7. The probe for a gamma ray spectral logging tool as described in claim 6, characterized in that: The moving component (21) includes a moving block (211) slidably connected inside the moving groove (123), and an arc plate (212) is slidably connected inside the moving block (211).

8. The probe for a gamma ray spectral logging tool according to claim 7, characterized in that: A fixing ring (213) is rotatably connected to the bottom of several of the arc-shaped plates (212), and the inner wall of the fixing ring (213) is fixedly connected to the outer surface of the probe (111).

9. The probe for a gamma ray spectral logging tool according to claim 3, characterized in that: The shrinking assembly (22) includes an annular plate (221) rotatably connected to a plurality of swing plates (122) at one end away from each other, and a plurality of springs (222) are fixedly connected to the inner wall of the annular plate (221). The spring (222) is fixedly connected to the side wall of the arc plate (212) at one end away from the annular plate (221), and the annular plate (221) is elastically configured as a whole.

10. The probe for a gamma ray spectral logging tool according to claim 4, characterized in that: The pushing assembly (31) includes several fixed blocks (311) fixedly connected to the outer surface of the probe (111), and the side wall of the fixed block (311) is rotatably connected to a U-shaped plate (312). Among them, one end of several U-shaped plates (312) that is far apart from each other is rotatably connected to the inner wall of the annular plate (221), and the U-shaped plates (312) as a whole are elastically configured.

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