Gamma tool

Abstract

The utility model relates to the technical field of geosteering equipment, and discloses a gamma tool. The utility model provides a gamma tool which comprises a drill bit, a connecting sleeve, a connecting seat, a transmitting tube and a gamma assembly, the connecting sleeve is installed on the top of the drill bit, the connecting seat is arranged on the connecting sleeve in a threaded mode, the transmitting tube is installed on the connecting seat on the lower portion, the gamma assembly is arranged in the transmitting tube, and the transmitting tube is provided with the other connecting seat. The device further comprises a guide disc, a pushing frame, guide rods, a limiting frame, a first elastic piece and a first clamping rod, the guide disc is installed on the connecting base, the pushing frame is rotationally arranged on the guide disc, and the multiple guide rods are fixedly connected to the connecting base on the lower portion. The limiting frame moves upwards to drive the first clamping rod to move upwards to be disengaged from the connecting sleeve, then the connecting base is rotated, the connecting base is disengaged from the connecting sleeve, the drill bit is detached, and therefore the drill bit is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the technical field of exploration equipment and discloses a gamma tool. Background Art

[0002] The near-bit gamma tool is a measurement tool installed between the drill bit and the screw, which can directly measure the natural gamma and wellbore trajectory parameters at the drill bit. The design and application of this tool has significant advantages in geosteering, because it can obtain formation lithology information more accurately and timely, guide the drill bit to travel through high-quality reservoirs, and thus achieve more precise control of the wellbore trajectory.

[0003] The patent authorization publication number is CN219034704U, and discloses a near-drill bit azimuth gamma instrument, including a drill bit assembly, a connecting rod is provided on one side of the drill bit assembly, and a mounting assembly is provided in the middle of the connecting rod, and the mounting assembly includes a sleeve rod, a mounting rod and a mounting groove. Although the above patent shortens the distance between the azimuth gamma assembly and the drill bit by adding an azimuth gamma assembly next to the drill bit, thereby avoiding the problem of the gamma tool being far away from the drill bit, the drill bit will be worn out during long-term use, so the drill bit needs to be replaced. Since the drill bit is fixedly installed on the mounting block, the drill bit needs to be disassembled with the help of tools for replacement. When the disassembly tool is missing, the drill bit cannot be disassembled.

[0004] Therefore, a gamma tool that facilitates the replacement of drill bits is needed. Utility Model Content

[0005] In order to overcome the disadvantage that the drill bit will be worn out during long-term use in the prior art, the drill bit needs to be replaced. Since the drill bit is fixedly mounted on the mounting block, the drill bit needs to be disassembled with the help of tools for replacement. When the disassembly tool is missing, the drill bit cannot be disassembled. The utility model provides a gamma tool that is easy to replace.

[0006] Technical solution: A gamma tool includes a drill bit, a connecting sleeve, a connecting seat, a launching tube and a gamma component. A connecting sleeve is installed on the top of the drill bit, and a connecting seat is threadedly arranged on the connecting sleeve. A launching tube is installed on the lower connecting seat, and a gamma component is arranged inside the launching tube. The launching tube is installed with another connecting seat, and also includes a guide plate, a pushing frame, a guide rod, a limiting frame, a first elastic member and a first clamping rod. A guide plate is installed on the connecting seat, and a pushing frame is rotatably arranged on the guide plate. A plurality of guide rods are fixedly connected to the lower connecting seat, and a limiting frame is slidably arranged on the plurality of guide rods. The pushing frame contacts the limiting frame, and a first elastic member is sleeved on the guide rod. The two ends of the first elastic member are respectively connected to the limiting frame and the lower connecting seat, and a plurality of first clamping rods are fixedly connected to the bottom of the limiting frame, and the first clamping rods are clamped into the interior of the connecting sleeve.

[0007] In addition, it is particularly preferred that it also includes a fixed screw, a limit seat, an annular baffle and a second elastic member. The limit seat is installed on the drill bit through multiple fixed screws, and an annular baffle is slidably arranged in the limit seat. The annular baffle slides to block the gap between the drill bit and the connecting seat, and multiple second elastic members are connected between the annular baffle and the limit seat.

[0008] In addition, it is particularly preferred that it also includes a fixed frame, a second clamping rod, an arc plate and a third elastic member, the bottom of the pushing frame is fixedly connected to the fixed frame, a plurality of second clamping rods are slidably arranged on the fixed frame, the end of the second clamping rod away from the fixed frame is fixedly connected to the arc plate, the second clamping rod slides inwardly and is clamped into the interior of the guide plate, the second clamping rod is sleeved with a third elastic member, and the two ends of the third elastic member are respectively connected to the fixed frame and the second clamping rod.

[0009] In addition, it is particularly preferred that a protrusion is provided on one side of the pushing frame and the limiting frame adjacent to each other, and the contact surface of the protrusion on the pushing frame and the limiting frame is an inclined surface.

[0010] Furthermore, it is particularly preferred that the connecting seat is provided with grooves along the circumference.

[0011] In addition, it is particularly preferred that the inner diameter of the annular baffle is smaller than the outer diameter of the connecting seat, and when the annular baffle is reset, the upper end surface of the annular baffle contacts the lower end surface of the connecting seat.

[0012] The utility model has the following advantages: 1. The limiting frame moves upward to drive the first clamping rod to move upward to disengage from the connecting sleeve, and then the connecting seat is rotated to disengage the connecting seat from the connecting sleeve to remove the drill bit, thereby facilitating the replacement of the drill bit.

[0013] 2. After the drill bit is replaced, the annular baffle is loosened, and the annular baffle blocks the gap between the connecting seat and the drill bit under the action of the second elastic member, thereby protecting the guide plate, the push frame and the limit frame to prevent mud and sand from wrapping the push frame and the limit frame during the use of the drill bit, making it convenient to disassemble the drill bit through the push frame and the limit frame 7 later.

[0014] 3. By loosening the second clamping rod, the third elastic member returns to its original state, causing the second clamping rod to move inward and clamp the push frame into the push frame, thereby limiting the push frame and preventing the push frame from moving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the drill bit, connecting sleeve and connecting seat of the utility model.

[0017] Figure 3It is a three-dimensional cross-sectional structural schematic diagram of the push plate, the guide rod and the first clamping rod of the utility model.

[0018] Figure 4 It is a three-dimensional cross-sectional structural schematic diagram of the connecting seat, the pushing frame and the guide plate of the utility model.

[0019] Figure 5 It is a three-dimensional cross-sectional structural schematic diagram of the drill bit, the limit seat and the annular baffle of the utility model.

[0020] Figure 6 It is an exploded view of the fixing screw, the limiting seat and the annular baffle of the utility model.

[0021] Figure 7 It is a three-dimensional cross-sectional structural schematic diagram of the connecting seat, the pushing frame and the second clamping rod of the utility model.

[0022] Figure 8 For this utility model Figure 7 Enlarged view of point A in the middle.

[0023] Fig. 9 It is a schematic diagram of the three-dimensional cross-sectional structure of the arc plate, the fixing frame and the fixing frame of the utility model.

[0024] Among them, the above-mentioned drawings include the following figure marks: 1, drill bit, 2, connecting sleeve, 3, connecting seat, 4, launching tube, 401, gamma assembly, 402, guide plate, 5, pushing frame, 6, guide rod, 7, limiting frame, 8, first elastic member, 9, first clamping rod, 10, fixing screw, 11, limiting seat, 12, annular baffle, 13, second elastic member, 14, fixing frame, 15, second clamping rod, 16, arc plate, 17, third elastic member. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1: A gamma tool, see Figure 1-Figure 4As shown, it includes a drill bit 1, a connecting sleeve 2, a connecting seat 3, a launching tube 4 and a gamma component 401. The connecting sleeve 2 is installed on the top of the drill bit 1 by bolt connection. The connecting sleeve 2 is threadedly provided with a connecting seat 3. The connecting seat 3 is provided with a groove along the circumferential direction. When the connecting seat 3 is rotated, the friction force can be increased by the groove, which is convenient for rotating the connecting seat 3. A launching tube 4 is installed on the lower connecting seat 3. The gamma component 401 is arranged inside the launching tube 4. The launching tube 4 is installed with another connecting seat 3. It also includes a guide plate 402, a pushing frame 5, a guide rod 6, a limiting frame 7, a first elastic member 8 and a first clamping rod 9. The guide plate 402 is installed on the connecting seat 3. A pushing frame 5 is rotatably arranged on the steering disk 402, and a plurality of guide rods 6 are fixedly connected to the lower connecting seat 3. A limiting frame 7 is slidably arranged on the plurality of guide rods 6. A protrusion is arranged on the side adjacent to the pushing frame 5 and the limiting frame 7. The pushing frame 5 is in contact with the limiting frame 7, and the contact surface of the protrusions on the pushing frame 5 and the limiting frame 7 is an inclined surface. A first elastic member 8 is sleeved on the guide rod 6, and the two ends of the first elastic member 8 are respectively connected to the limiting frame 7 and the lower connecting seat 3. A plurality of first clamping rods 9 are fixedly connected to the bottom of the limiting frame 7. When the pushing frame 5 is rotated, the protrusions on the pushing frame 5 and the limiting frame 7 are squeezed against each other, so that the limiting frame 7 drives the first clamping rod 9 to be clamped into the inside of the connecting sleeve 2.

[0027] When the gamma tool is needed, the screw is connected to the connecting seat 3, and then the drill bit 1 is placed in the detection hole. The launch tube 4 is controlled to move by the sensor, so that the drill bit 1 passes through the reservoir, and the gamma component 401 detects and tracks the natural gamma in the wellbore, thereby guiding the drill bit 1 to pass through the high-quality reservoir. When the drill bit 1 needs to be replaced, the pushing frame 5 is rotated to make it contact with the limit frame 7, and the first elastic member 8 returns to its original state to make the limit frame 7 move upward, thereby driving the first clamping rod 9 to move upward and disengage from the connecting sleeve 2, and then the connecting seat 3 is rotated to make the connecting seat 3 disengage from the connecting sleeve 2, and then the drill bit 1 is removed, so as to facilitate the replacement of the drill bit 1, and then the new connecting sleeve 2 is moved to the lower end of the connecting seat 3, the connecting seat 3 is rotated, and the connecting seat 3 is connected to the connecting sleeve 2, and then the pushing frame 5 is reversed to make the pushing frame 5 squeeze the limit frame 7 and move downward, thereby making the first clamping rod 9 move downward and clamp into the inside of the connecting sleeve 2, and fix the connecting seat 3 on the connecting sleeve 2.

[0028] Example 2: Based on Example 1, refer to Figure 1 , Figure 3 and Figure 6As shown, it also includes a fixing screw 10, a limiting seat 11, an annular baffle 12 and a second elastic member 13. The limiting seat 11 is installed on the drill bit 1 through multiple fixing screws 10. An annular baffle 12 is slidably arranged in the limiting seat 11. The annular baffle 12 slides to block the gap between the drill bit 1 and the connecting seat 3. Four second elastic members 13 are connected between the annular baffle 12 and the limiting seat 11. The inner diameter of the annular baffle 12 is smaller than the outer diameter of the connecting seat 3. When the annular baffle 12 is reset, the upper end surface of the annular baffle 12 contacts the lower end surface of the connecting seat 3. When the annular baffle 12 slides upward, the connecting seat 3 resists the annular baffle 12, thereby forming a closed space between the outside of the connecting seat 3 and the inside of the annular baffle 12.

[0029] When the drill bit 1 needs to be replaced, the annular baffle 12 is pressed downward, and the annular baffle 12 squeezes the second elastic member 13 to deform, and then the push frame 5 is rotated to replace the drill bit 1. After the drill bit 1 is replaced, the annular baffle 12 is released, and the second elastic member 13 returns to its original state, driving the annular baffle 12 to slide upward and contact the bottom of the connecting seat 3, so that the annular baffle 12 blocks the gap between the connecting seat 3 and the drill bit 1, and protects the guide plate 402, the pushing frame 5 and the limiting frame 7 to prevent mud and sand from wrapping the pushing frame 5 and the limiting frame 7 during the use of the drill bit 1, so as to facilitate the subsequent disassembly of the drill bit 1 through the pushing frame 5 and the limiting frame 7.

[0030] See also Figure 7-Figure 9 As shown, it also includes a fixing frame 14, a second clamping rod 15, an arc plate 16 and a third elastic member 17. The bottom of the pushing frame 5 is fixedly connected to the fixing frame 14 by welding. Four second clamping rods 15 are circumferentially slidably arranged on the fixing frame 14. The end of the second clamping rod 15 away from the fixing frame 14 is fixedly connected to the arc plate 16. The second clamping rod 15 slides inwardly and is clamped into the guide plate 402. The third elastic member 17 is sleeved on the second clamping rod 15. The two ends of the third elastic member 17 are respectively connected to the fixing frame 14 and the second clamping rod 15.

[0031] When the drill bit 1 needs to be replaced, the second clamping rod 15 is pulled outward to disengage it from the pushing frame 5, and the third elastic member 17 is compressed accordingly. The pushing frame 5 is rotated again to remove the drill bit 1. After the replacement is completed, the pushing frame 5 is reversed, and then the second clamping rod 15 is released. The third elastic member 17 returns to its original state, causing the second clamping rod 15 to move inward and engage with the pushing frame 5 inside the pushing frame 5, thereby limiting the pushing frame 5 to prevent the pushing frame 5 from moving.

[0032] The above description is only an example of the implementation of the present invention and is not intended to limit the present invention. Any equivalent replacement made within the principle of the present invention shall be included in the protection scope of the present invention. The contents not elaborated in the present invention belong to the existing technology known to the technicians in this professional field.

Claims

1. A gamma tool, comprising a drill bit (1), a connecting sleeve (2), a connecting seat (3), a launching tube (4) and a gamma assembly (401), wherein a connecting sleeve (2) is installed on the top of the drill bit (1), a connecting seat (3) is threadedly arranged on the connecting sleeve (2), a launching tube (4) is installed on the lower connecting seat (3), a gamma assembly (401) is arranged inside the launching tube (4), and another connecting seat (3) is installed on the launching tube (4), wherein the gamma assembly (401) is arranged inside the launching tube (4), and another connecting seat (3) is installed on the launching tube (4), wherein the gamma tool comprises: The invention also comprises a guide plate (402), a push frame (5), a guide rod (6), a limit frame (7), a first elastic member (8) and a first clamping rod (9); the guide plate (402) is installed on the connecting seat (3); the push frame (5) is rotatably arranged on the guide plate (402); a plurality of guide rods (6) are fixedly connected to the lower connecting seat (3); a limit frame (7) is slidably arranged on the plurality of guide rods (6); the push frame (5) is in contact with the limit frame (7); a first elastic member (8) is sleeved on the guide rod (6); two ends of the first elastic member (8) are respectively connected to the limit frame (7) and the lower connecting seat (3); a plurality of first clamping rods (9) are fixedly connected to the bottom of the limit frame (7); and the first clamping rods (9) are clamped into the interior of the connecting sleeve (2).

2. A gamma tool as claimed in claim 1, characterized in that: The invention also comprises a fixing screw (10), a limiting seat (11), an annular baffle (12) and a second elastic member (13); the limiting seat (11) is mounted on the drill bit (1) via a plurality of fixing screws (10); an annular baffle (12) is slidably arranged inside the limiting seat (11); the annular baffle (12) slides to block the gap between the drill bit (1) and the connecting seat (3); and a plurality of second elastic members (13) are connected between the annular baffle (12) and the limiting seat (11).

3. A gamma tool as claimed in claim 1, characterized in that: It also includes a fixed frame (14), a second clamping rod (15), an arc plate (16) and a third elastic member (17); the bottom of the pushing frame (5) is fixedly connected to the fixed frame (14); a plurality of second clamping rods (15) are slidably arranged on the fixed frame (14); one end of the second clamping rod (15) away from the fixed frame (14) is fixedly connected to the arc plate (16); the second clamping rod (15) slides inwardly and is clamped into the inside of the guide plate (402); a third elastic member (17) is sleeved on the second clamping rod (15); and the two ends of the third elastic member (17) are respectively connected to the fixed frame (14) and the second clamping rod (15).

4. A gamma tool as claimed in claim 1, characterized in that: A protrusion is provided on one side of the push frame (5) and the limit frame (7) adjacent to each other, and the contact surface of the protrusion on the push frame (5) and the limit frame (7) is an inclined surface.

5. A gamma tool as claimed in claim 1, characterized in that: The connecting seat (3) is provided with grooves along the circumference.

6. A gamma tool as claimed in claim 3, characterized in that: The inner diameter of the annular baffle (12) is smaller than the outer diameter of the connecting seat (3), and when the annular baffle (12) is reset, the upper end surface of the annular baffle (12) contacts the lower end surface of the connecting seat (3).

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