Well logging instrument and numerically controlled well logging system

Abstract

The present invention belongs to the technical field of numerical control well logging, and in particular, relates to a well logging instrument and a numerical control well logging system, including a columnar detection probe, the top of the detection probe is connected to a data line, a plurality of protective rods are distributed in an annular manner on the surface of the upper half of the detection probe, a mounting groove is provided on the side of the top of the protective rod away from the detection probe, a shock absorbing assembly is installed in the mounting groove, and the bottom end of the protective rod is hinged to the surface of the detection probe. The present invention is provided with a shock absorbing assembly, when the data line is suddenly loosened, the reset spring can be quickly reset, so that the protective rod can contact the inner wall of the mine under the pull of the guide rod, and then the friction plate can drive the end of the shock absorbing rod away from the detection probe to deflect upward and stretch the shock absorbing spring under the action of friction force, so that the collision force between the friction plate and the well wall is converted into the elastic potential energy of the shock absorbing spring, thereby reducing the impact of the collision on the detection probe.

Description

Technical Field

[0001] The invention belongs to the technical field of digital well logging, and in particular relates to a well logging instrument and a digital well logging system. Background Art

[0002] The well logging instrument is an important instrument used in the field of well drilling and in the exploration and development of mineral resources such as oil and natural gas. It can continuously scan the well wall or horizontally scan any level to obtain technical data such as the vertical section, horizontal section, effective section, and deviation distance of the wellbore.

[0003] When using the existing logging instrument, it is necessary to perform ultrasonic detection at different depths of the mine to determine the distribution of rock layers at different depths on the ground. In order to achieve detection operations at different depths, it is generally necessary to use a wire take-up device or manually release the wire so that the detection probe can be located at different depths of the mine. However, when the wire take-up device fails or a manual error occurs during the wire release process, the detection probe will fall rapidly under the action of gravity. During the rapid fall of the detection probe, the detection probe may collide with the inner wall of the mine, thereby causing damage to the detection probe.

[0004] Therefore, it is necessary to invent a well logging instrument and a numerically controlled well logging system to solve the above problems. Summary of the invention

[0005] In view of the above problems, the present invention provides a well logging instrument and a digitally controlled well logging system to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a well logging instrument and a numerically controlled well logging system, comprising a columnar detection probe, the top of the detection probe is connected to a data line, a plurality of protective rods are distributed in an annular manner on the surface of the upper half of the detection probe, a mounting groove is provided on the side of the top of the protective rod away from the detection probe, a shock absorbing component is installed in the mounting groove, the bottom end of the protective rod is hinged to the surface of the detection probe, the bottom ends of the plurality of protective rods are provided with the same first movable ring, the top of the first movable ring is provided with a connecting component, the first movable ring is slidably sleeved on the detection probe, a plurality of levers are fixedly connected to the outer side of the first movable ring, and the plurality of levers are respectively located at a plurality of The bottom of the protective rod, the top of the lever is provided with a notch, and the protective rod is located in the notch of the lever at the bottom thereof, a strip-shaped guide hole is penetrated through the protective rod, a guide rod is inserted through the guide hole, two ends of the guide rod are respectively fixedly connected to the inner walls on both sides of the notch, a fixing ring is provided at the bottom of the first movable ring, the fixing ring is fixedly sleeved on the detection probe, a reset spring is fixedly connected between the fixing ring and the first movable ring, and the reset spring is sleeved on the detection probe, a plurality of support components are distributed in an annular manner on the surface of the lower half of the detection probe, a vertical limit groove is provided at a position on the surface of the detection probe facing the support component, and a driving component is provided in the limit groove.

[0007] Furthermore, the shock absorbing assembly includes a shock absorbing rod, the side position of the shock absorbing rod near the bottom end is hinged to the mounting groove, a shock absorbing spring is connected between the bottom end of the shock absorbing rod and the bottom groove wall of the mounting groove, the upward end of the shock absorbing rod is fixedly connected to a friction plate, and the angle between the side of the friction plate close to the detection probe and the shock absorbing rod is an obtuse angle.

[0008] Furthermore, the connecting assembly includes a plurality of first connecting rods, which are vertically fixedly connected to the top of the first movable ring, and a connecting ring is fixedly connected between the top ends of the plurality of first connecting rods, a threading plate is provided at the top axis of the connecting ring, and the data cable is fixedly inserted through the threading plate at the center of the circle, and a plurality of second connecting rods are fixedly connected between the side of the threading plate and the top of the connecting ring.

[0009] Furthermore, the support assembly includes two parallel supported support rods, and the bottom ends of the support rods are designed as pointed ends, and the two supports are distributed inclined upward and downward, the top ends of the support rods are hinged together with the side walls of the limiting grooves, the lower half of the support rods are slidably sleeved with a sleeve, and the same vertical support plate is arranged between the bottom ends of the two sleeves, the support plate is penetrated by a strip-shaped through hole in a direction perpendicular to the surface of the detection probe, the bottom end of the sleeve is hinged together with the side inner wall of the through hole, a positioning ring and a limiting ring are fixedly sleeved on the support rod from top to bottom in sequence, the limiting ring is located on the inner side of the sleeve, and the limiting ring is fitted with the inner wall of the top end of the sleeve, a supporting spring is fixedly connected between the bottom of the positioning ring and the top end of the sleeve, the supporting spring is sleeved on the support rod, and the sum of the elastic forces of all the supporting springs is less than the gravity of the detection probe.

[0010] Furthermore, the driving assembly includes a rack, which is slidably installed in a limit groove, and the top of the rack protrudes in a direction away from the axis of the detection probe, a second movable ring is fixedly connected between the protruding parts of the top of the multiple racks, the second movable ring is slidably sleeved on the detection probe, and two pull rods are symmetrically fixedly connected between the outer side of the second movable ring and the outer side of the first movable ring, a gear is fixedly connected to the top of the support rod, the center of the gear coincides with the hinge point of the top of the support rod, and the gear and the rack are always meshed together.

[0011] Furthermore, the support plate is always in a vertical state, and horizontal anti-slip grooves are evenly arranged on a side of the support plate away from the detection probe.

[0012] Furthermore, the portion of the data cable located between the top of the detection probe and the threading plate is designed to be retractable and spiral, and the maximum elongation of this portion of the data cable is greater than the maximum elongation of the reset spring.

[0013] Furthermore, in the initial state, the length of the support rod is smaller than the distance from the top of the friction plate to the bottom of the shock-absorbing rod, and in the initial state, the bottom end of the support rod is just located in the through hole of the support plate.

[0014] The present invention also provides a digitally controlled well logging system, comprising the well logging instrument as described in any one of the above items.

[0015] Technical effects and advantages of the present invention:

[0016] 1. The present invention is provided with a shock-absorbing assembly. When the data line is suddenly loosened, the reset spring can be quickly reset, so that the protection rod can be pulled by the guide rod to contact the inner wall of the mine. Then, the friction plate can drive the end of the shock-absorbing rod away from the detection probe to deflect upward and stretch the shock-absorbing spring under the action of friction force, so that the collision force between the friction plate and the well wall is converted into the elastic potential energy of the shock-absorbing spring, thereby reducing the impact of the collision on the detection probe;

[0017] 2. The present invention is provided with a connection assembly. When the data line is accidentally loosened, as the reset spring contracts, the part of the data line between the top of the detection probe and the threading plate can be changed back to a spirally retractable state. At this time, when the detection probe is pulled by the data line before it stops falling, the data line can pull the reset spring to extend through the threading plate, the second connecting rod, the connecting ring, and the first connecting rod, thereby converting the tension of the data line into the elastic potential energy of the reset spring, thereby effectively preventing the data line from being damaged or broken due to sudden tension.

[0018] 3. The present invention is provided with a support assembly. When the detection probe suddenly falls, as the second movable ring drives the rack to move downward along the limit groove, the rack can drive the two support rods to deflect upward synchronously through the cooperation with the gear, so that the support plate can gradually keep in contact with the inner wall of the mine. As the support plate moves downward along the wall of the mine, the bottom tip of the support rod can extend out of the through hole of the support plate and fit together with the inner wall of the mine, so that the tip of the support rod can be inserted into the pit on the inner wall of the mine during the falling process, and then cooperate with the friction between the support plate and the inner wall of the mine to quickly prevent the detection probe from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 The present invention Figure 1 A magnified view of part A;

[0021] Figure 3 It is a three-dimensional schematic diagram of the detection probe, the first movable ring, the lever, the return spring and part of the driving components in the present invention;

[0022] Figure 4 It is a three-dimensional schematic diagram of the support assembly and part of the drive assembly in the present invention;

[0023] Figure 5 is a three-dimensional schematic diagram of the support assembly and the gear in the present invention;

[0024] Figure 6 It is a three-dimensional schematic diagram of the protection rod, the first movable ring, the lever and the shock absorbing assembly in the present invention;

[0025] Figure 7 It is a three-dimensional schematic diagram of the shock absorbing assembly and the protection rod in the present invention;

[0026] Figure 8 It is a three-dimensional schematic diagram of the first movable ring, the shifting rod and the guide rod in the present invention.

[0027] In the figure: 1. detection probe; 2. data cable; 3. protection rod; 4. shock absorbing assembly; 41. shock absorbing rod; 42. shock absorbing spring; 43. friction plate; 5. first movable ring; 6. connecting assembly; 61. first connecting rod; 62. connecting ring; 63. threading plate; 64. second connecting rod; 7. shift rod; 8. guide hole; 9. guide rod; 10. fixing ring; 11. reset spring; 12. support assembly; 121. support rod; 122. sleeve; 123. support plate; 124. positioning ring; 125. limit ring; 126. support spring; 13. drive assembly; 131. rack; 132. second movable ring; 133. pull rod; 134. gear. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0029] The present invention provides Figures 1 to 8A logging instrument and a numerically controlled logging system are shown, comprising a columnar detection probe 1, the top of which is connected to a data line 2, a plurality of protective rods 3 are distributed in an annular manner on the upper surface of the detection probe 1, a mounting groove is provided on the side of the top of the protective rod 3 away from the detection probe 1, a shock absorbing assembly 4 is installed in the mounting groove, the bottom end of the protective rod 3 is hinged to the surface of the detection probe 1, a plurality of the bottom ends of the protective rods 3 are provided with the same first movable ring 5, a connecting assembly 6 is provided on the top of the first movable ring 5, the connecting assembly 6 comprises a plurality of first connecting rods 61, the first connecting rods 61 are vertically fixedly connected to the top of the first movable ring 5, a connecting ring 62 is fixedly connected between the tops of the plurality of first connecting rods 61, a threading plate 63 is provided at the top axis of the connecting ring 62, and the data line 2 is fixedly inserted through the threading plate 63 at the center of the circle, a plurality of second connecting rods 64 are fixedly connected between the side of the threading plate 63 and the top of the connecting ring 62, the first movable ring 5 is slidably sleeved on the detection probe 1, and the first movable ring 5 is slidably sleeved on the detection probe 1. The outer side of the ring 5 is fixedly connected with a plurality of levers 7, and the plurality of levers 7 are respectively located at the bottom of the plurality of protective rods 3, the top of the lever 7 is provided with a notch, and the protective rod 3 is located in the notch of the lever 7 at the bottom thereof, the protective rod 3 is penetrated with a strip-shaped guide hole 8, the guide hole 8 is penetrated with a guide rod 9, and the two ends of the guide rod 9 are respectively fixedly connected with the inner walls on both sides of the notch, the bottom of the first movable ring 5 is provided with a fixing ring 10, the fixing ring 10 is fixedly sleeved on the detection probe 1, and the fixing ring 10 is connected with the first movable ring 5. A reset spring 11 is fixedly connected between a movable ring 5, and the reset spring 11 is sleeved on the detection probe 1. A plurality of support components 12 are distributed in an annular manner on the surface of the lower half of the detection probe 1. A vertical limit groove is provided at a position on the surface of the detection probe 1 directly opposite to the support component 12, and a drive component 13 is arranged in the limit groove. The portion of the data line 2 located between the top of the detection probe 1 and the threading plate 63 is a retractable spiral design, and the maximum elongation of this portion of the data line 2 is greater than the maximum elongation of the reset spring 11;

[0030] The shock absorbing assembly 4 includes a shock absorbing rod 41, the side position of the shock absorbing rod 41 near the bottom end is hinged with the installation groove, a shock absorbing spring 42 is connected between the bottom end of the shock absorbing rod 41 and the bottom groove wall of the installation groove, and the upward end of the shock absorbing rod 41 is fixedly connected to a friction plate 43, and the angle between the side of the friction plate 43 near the detection probe 1 and the shock absorbing rod 41 is an obtuse angle;

[0031] When in use, as the data line 2 is lifted upward, the threading plate 63 can pull the connecting ring 62 upward through the second connecting rod 64 under the pull of the data line 2, and as the connecting ring 62 moves upward, the connecting ring 62 can pull the first movable ring 5 upward through the multiple first connecting rods 61, and as the first movable ring 5 moves upward, the reset spring 11 is gradually stretched, and the lever 7 can drive the guide rod 9 to move upward along the guide hole 8, and as the guide rod 9 moves upward, the protective rod 3 can be pushed by the guide rod 9 to deflect in the direction close to the detection probe 1, so that the multiple protective rods 3 can drive the corresponding shock absorbing rods 41 to be in a convergent state, and at the same time, as the first movable ring 5 moves upward, the first movable ring 5 can drive the support assembly 12 to synchronously deflect in the direction close to the detection probe 1 through the driving assembly 13, so that the detection probe 1 together with the shock absorbing assembly 4 and the support assembly 12 can be smoothly placed in the mine;

[0032] After the detection probe 1 is placed in the mine, the support assembly 12 and the shock absorbing assembly 4 can be in a partially converged state and surround the detection probe 1, thereby effectively preventing the detection probe 1 from colliding with the inner wall of the mine during the downward movement of the detection probe 1, thereby protecting the detection probe 1 from damage;

[0033] During the up and down movement of the detection probe 1, when the data line 2 is suddenly loosened, as the pulling force of the data line 2 on the threading plate 63 disappears, the reset spring 11 can be quickly reset, so that the first movable ring 5 can move downward under the pull of the reset spring 11, and as the first movable ring 5 moves downward, the lever 7 can drive the guide rod 9 to move downward along the guide hole 8, so that the protection rod 3 can be deflected in the direction away from the detection probe 1 under the pull of the guide rod 9, and as the protection rod 3 deflects, when the friction plate 43 contacts the inner wall of the mine, the friction plate 43 can drive the damping rod 41 away from one end of the detection probe 1 under the action of friction. The shock absorbing rod 41 deflects upward, and with the deflection of the shock absorbing rod 41, the shock absorbing spring 42 can be gradually stretched, so that the collision force between the friction plate 43 and the well wall is converted into the elastic potential energy of the shock absorbing spring 42, thereby reducing the impact of the collision on the detection probe 1, so that the detection probe 1 can maintain a good vertical state. In addition, in the process of the reset spring 11 pulling the first movable ring 5 to move downward, the first movable ring 5 can also drive the multiple support components 12 to be close to the inner wall of the mine through the driving component 13, so that the detection probe 1 can quickly stop falling through the friction between the support component 12 and the well wall, reducing the damage to the detection probe 1 caused by unexpected situations;

[0034] In addition, by providing a connecting component 6, when the data cable 2 is accidentally loosened, as the reset spring 11 contracts, the part of the data cable 2 located between the top of the detection probe 1 and the threading plate 63 can be changed back to a spirally retractable state. At this time, when the detection probe 1 is pulled by the data cable 2 before stopping falling, the data cable 2 can pull the reset spring 11 to extend through the threading plate 63, the second connecting rod 64, the connecting ring 62, and the first connecting rod 61, thereby converting the tension of the data cable 2 into the elastic potential energy of the reset spring 11, thereby effectively preventing the data cable 2 from being damaged or broken due to sudden tension.

[0035] like Figures 1 to 5 As shown, the support assembly 12 includes two parallel support rods 121, and the bottom ends of the support rods 121 are of pointed design, and the two supports are inclined up and down, the top ends of the support rods 121 are hinged to the side walls of the limiting grooves, and the lower half of the support rods 121 is slidably sleeved with a sleeve 122, and a vertical support plate 123 is arranged between the bottom ends of the two sleeves 122, and the support plate 123 is penetrated with a strip-shaped through hole in a direction perpendicular to the surface of the detection probe 1, and the bottom ends of the sleeves 122 are hinged to the side inner walls of the through holes, and the support rods 121 are arranged from top to bottom in sequence. A positioning ring 124 and a limiting ring 125 are fixedly sleeved, the limiting ring 125 is located inside the sleeve 122, and the limiting ring 125 is in contact with the inner wall of the top end of the sleeve 122, a supporting spring 126 is fixedly connected between the bottom of the positioning ring 124 and the top end of the sleeve 122, the supporting spring 126 is sleeved on the supporting rod 121, and the sum of the elastic forces of all the supporting springs 126 is less than the gravity of the detection probe 1, in the initial state, the length of the supporting rod 121 is less than the distance from the top end of the friction plate 43 to the bottom end of the shock absorbing rod 41, and in the initial state, the bottom end of the supporting rod 121 is just located in the through hole of the supporting plate 123;

[0036] The driving assembly 13 includes a rack 131, which is slidably installed in a limiting groove, and the top of the rack 131 protrudes in a direction away from the axis of the detection probe 1. A second movable ring 132 is fixedly connected between the protruding parts of the tops of the multiple racks 131. The second movable ring 132 is slidably sleeved on the detection probe 1, and two pull rods 133 are symmetrically fixedly connected between the outer side of the second movable ring 132 and the outer side of the first movable ring 5. A gear 134 is fixedly connected to the top of the support rod 121, and the center of the gear 134 coincides with the hinge point at the top of the support rod 121, and the gear 134 is always meshed with the rack 131;

[0037] When the detection probe 1 suddenly falls, as the first movable ring 5 moves downward under the pull of the reset spring 11, the first movable ring 5 can push the second movable ring 132 through the pull rod 133 to drive the rack 131 to move downward along the limit groove, and as the rack 131 moves downward, the rack 131 can drive the two support rods 121 to deflect upward synchronously through the cooperation with the gear 134, so that the support plate 123 can gradually keep in contact with the inner wall of the mine, and when the support plate 123 is in contact with the inner wall of the mine, as the support plate 123 is in contact with the inner wall of the mine, The plate 123 moves downward along the shaft wall, and the upward friction of the inner wall of the shaft on the support plate 123 can make the sleeve 122 move upward and squeeze the support spring 126. As the sleeve 122 moves upward, the bottom tip of the support rod 121 can extend out of the through hole of the support plate 123 and fit together with the inner wall of the shaft, so that the tip of the support rod 121 can be inserted into the hole on the inner wall of the shaft during the falling process, and then cooperate with the friction between the support plate 123 and the inner wall of the shaft to quickly prevent the detection probe 1 from falling.

[0038] In addition, in the process of the support rod 121 and the support plate 123 preventing the detection probe 1 from falling, due to the existence of the shock absorbing assembly 4, the multiple shock absorbing rods 41 can maintain a relatively good vertical state of the upper half of the detection probe 1 during the falling process through the supporting force between the multiple shock absorbing rods 41 and the inner wall of the mine, thereby cooperating with the limiting effect of the support plate 123 and the support legs on the lower half of the detection probe 1, so that the detection probe 1 can quickly stop falling under the premise of reducing the probability of collision with the mine wall, thereby improving the protection effect of the detection probe 1 in unexpected situations;

[0039] In addition, due to the existence of the support spring 126 and the presence of potholes on the well wall, the support spring 126 can effectively absorb the collision force exerted on the support plate 123 during the process of the support plate 123 sliding downward along the well wall, thereby ensuring that the support plate 123 can be stably attached to the well wall, thereby enhancing the friction effect between the support plate 123 and the well wall, and helping the detection probe 1 to stop falling quickly.

[0040] like Figure 1 and Figure 4 As shown, the support plate 123 is always in a vertical state, and the side of the support plate 123 away from the detection probe 1 is evenly provided with horizontal anti-slip grooves;

[0041] By providing anti-skid grooves on the support plate 123 , when the support plate 123 moves downward along the inner wall of the mine, the anti-skid grooves can increase the friction between the support plate 123 and the inner wall of the mine, thereby causing the detection probe 1 to stop falling as soon as possible under the friction of the support plate 123 .

[0042] The present invention also provides a digitally controlled well logging system, comprising the well logging instrument as described in any one of the above items.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A well logging instrument, comprising a columnar detection probe (1), characterized in that: The top of the detection probe (1) is connected to a data line (2); a plurality of protective rods (3) are distributed in a ring shape on the upper surface of the detection probe (1); a mounting groove is provided on the side of the top of the protective rod (3) away from the detection probe (1); a shock absorbing component (4) is installed in the mounting groove; the bottom end of the protective rod (3) is hinged to the surface of the detection probe (1); the bottom ends of the plurality of protective rods (3) are provided with a same first movable ring (5); the top of the first movable ring (5) is provided with a connecting component (6); the first movable ring (5) is slidably sleeved on the detection probe (1); the outer side of the first movable ring (5) is fixedly connected to a plurality of levers (7); the plurality of levers (7) are respectively located at the bottom of the plurality of protective rods (3); the top of the levers (7) is provided with a notch; and the protective rods (3) Located in the notch of the bottom lever (7), the protection rod (3) is provided with a strip-shaped guide hole (8), a guide rod (9) is inserted into the guide hole (8), and the two ends of the guide rod (9) are respectively fixedly connected to the inner walls on both sides of the notch. A fixing ring (10) is provided at the bottom of the first movable ring (5), and the fixing ring (10) is fixedly sleeved on the detection probe (1). A reset spring (11) is fixedly connected between the fixing ring (10) and the first movable ring (5), and the reset spring (11) is sleeved on the detection probe (1). A plurality of support components (12) are distributed in an annular manner on the surface of the lower half of the detection probe (1), and a vertical limit groove is provided on the surface of the detection probe (1) at a position directly opposite to the support component (12), and a driving component (13) is provided in the limit groove.

2. The logging tool according to claim 1, characterized in that: The shock absorbing assembly (4) comprises a shock absorbing rod (41), the side position of the shock absorbing rod (41) close to the bottom end is hinged to the installation groove, a shock absorbing spring (42) is connected between the bottom end of the shock absorbing rod (41) and the bottom groove wall of the installation groove, and an upward end of the shock absorbing rod (41) is fixedly connected to a friction plate (43), and the angle between the side of the friction plate (43) close to the detection probe (1) and the shock absorbing rod (41) is an obtuse angle.

3. The well logging tool according to claim 2, characterized in that: The connection assembly (6) comprises a plurality of first connection rods (61), wherein the first connection rods (61) are vertically fixedly connected to the top of the first movable ring (5), a connection ring (62) is fixedly connected between the tops of the plurality of first connection rods (61), a threading plate (63) is provided at the axis center of the top of the connection ring (62), and the data cable (2) is fixedly inserted through the center of the threading plate (63), and a plurality of second connection rods (64) are fixedly connected between the side surface of the threading plate (63) and the top of the connection ring (62).

4. The logging tool according to claim 3, characterized in that: The support assembly (12) comprises two support rods (121) arranged in parallel, and the bottom ends of the support rods (121) are designed as pointed ends, and the two supports are distributed in an upward and downward tilted manner, the top ends of the support rods (121) are hinged to the side walls of the limiting grooves, the lower half of the support rods (121) is slidably sleeved with a sleeve (122), and a vertical support plate (123) is arranged between the bottom ends of the two sleeves (122), and the support plate (123) is penetrated by a strip-shaped through hole in a direction perpendicular to the surface of the detection probe (1), and the bottom end of the sleeve (122) is slidably sleeved with a sleeve (122). The inner walls of the side surfaces of the through hole are hinged together; a positioning ring (124) and a limiting ring (125) are fixedly sleeved on the support rod (121) in sequence from top to bottom; the limiting ring (125) is located inside the sleeve (122), and the limiting ring (125) is in contact with the inner wall of the top end of the sleeve (122); a supporting spring (126) is fixedly connected between the bottom of the positioning ring (124) and the top end of the sleeve (122); the supporting spring (126) is sleeved on the support rod (121), and the sum of the elastic forces of all the supporting springs (126) is less than the gravity of the detection probe (1).

5. The logging tool according to claim 4, characterized in that: The driving assembly (13) comprises a rack (131), the rack (131) being slidably mounted in a limiting groove, and the top end of the rack (131) protruding in a direction away from the axis of the detection probe (1), a second movable ring (132) being fixedly connected between the protruding parts of the top ends of the plurality of racks (131), the second movable ring (132) being slidably sleeved on the detection probe (1), and two pull rods (133) being symmetrically fixedly connected between the outer side of the second movable ring (132) and the outer side of the first movable ring (5), the top end of the support rod (121) being fixedly connected to a gear (134), the center of the gear (134) being coincident with the hinge point at the top end of the support rod (121), and the gear (134) and the rack (131) being always meshed together.

6. The well logging tool according to claim 5, characterized in that: The support plate (123) is always in a vertical state, and a side of the support plate (123) away from the detection probe (1) is evenly provided with horizontal anti-slip grooves.

7. The logging tool according to claim 6, characterized in that: The portion of the data line (2) located between the top of the detection probe (1) and the threading plate (63) is designed to be retractable and spiral, and the maximum elongation of this portion of the data line (2) is greater than the maximum elongation of the reset spring (11).

8. The well logging tool according to claim 7, characterized in that: In the initial state, the length of the support rod (121) is less than the distance from the top end of the friction plate (43) to the bottom end of the shock-absorbing rod (41), and in the initial state, the bottom end of the support rod (121) is just located in the through hole of the support plate (123).

9. A numerically controlled well logging system, characterized in that: Comprising a logging tool as described in any one of claims 1-8.

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