Anti-collision device of logging instrument

Abstract

The utility model relates to an anti-collision device of a logging instrument, which belongs to the technical field of anti-collision devices and comprises a protective plate, a protective frame and a logging instrument body, and fixed semi-rings are fixed at four positions of the upper surface of the protective plate. According to the anti-collision device for the logging instrument, the anti-collision performance of the logging instrument body can be improved through the protection frame, the protection plate, the protection net and the rectangular frame, four handles are twisted to drive four threaded covers to rotate on the outer sides of four threaded rods, and the four threaded covers can be detached from the outer sides of the four threaded rods; then the protection plate is pulled upwards, four threaded rods move upwards and move out of the interiors of four fixing holes, and then the bolts on the left side and the right side are pulled in the opposite directions, so that the bolts on the left side and the right side move out of the interiors of the slots on the left side and the right side relative to the outer sides; and then the logging instrument body is taken out from the bottom wall of the inner cavity of the protection frame, so that the logging instrument is convenient to disassemble and install, and the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-collision devices, in particular to an anti-collision device for a well logging instrument. Background Art

[0002] The logging instrument can continuously scan the well wall and can also perform horizontal scanning at any level, and provide technical information such as the vertical section, horizontal section, effective section, and deviation distance of the wellbore. The logging results can be directly displayed on the computer screen or given by a plotter printer. It is flexible and convenient to use. The use of logging instruments can prevent wellbore deviation, reduce construction period, speed up construction progress, ensure project quality, and have obvious indirect economic benefits and very significant social benefits. There are many types of logging instruments on the market, including well drilling logging instruments, ultrasonic logging instruments, nuclear logging instruments, and digital coring logging instruments, etc. In the process of placing the logging instrument into the borehole, measuring, and removing the logging instrument, it is easy to cause a collision between the logging instrument and the borehole. As a precision instrument, the logging instrument is likely to malfunction or be damaged by impact.

[0003] For example, Chinese patent CN219733362U discloses a well logging instrument, including a well logging instrument body, a fixed seat is arranged around the well logging instrument body, a fixed barrel is arranged on the fixed seat, a limit screw is arranged on the fixed barrel, a limit plate is arranged at one end of the limit screw, and a limit knob is arranged at the other end, a limit slide is arranged between the limit plate and the fixed barrel, and a scale line is arranged on the limit slide, and the well logging instrument body includes an insulating isolation sleeve, a fixed ring is arranged on the insulating isolation sleeve, a sliding ring is arranged between the two fixed rings, and a protective seat and a protective spring are arranged between the sliding ring and the fixed ring. By arranging the limit screw, the limit knob and the limit plate, the well logging instrument body is located at the center of the wellhead to prevent the well logging instrument body from shifting, and by arranging the scale line, the distance between the well logging instrument body and the wellbore wall at the wellhead is accurately controlled, and by arranging the fixed ring, the sliding ring, the connecting rod and the protective seat, the hard collision of the well logging instrument body noise is prevented, and by arranging the protective spring, the collision buffering effect is given to the well logging instrument body.

[0004] Although the above patent provides a collision buffering effect to the logging instrument body by setting a protective spring, the connection method of fixing the logging instrument body inside the fixing seat in the patent is not disclosed, which makes it inconvenient to install and disassemble the logging instrument body inside the fixing seat, reducing practicality. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides an anti-collision device for a well logging instrument, which has the advantages of easy disassembly and installation of the well logging instrument body, and solves the problem that the connection method of the well logging instrument body fixed inside the fixing seat is not disclosed, which makes it inconvenient to install and disassemble the well logging instrument body inside the fixing seat, reducing the practicality.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a well logging instrument anti-collision device, comprising a protective plate, a protective frame and a well logging instrument body, wherein four locations on the upper surface of the protective plate are fixed with fixed semi-rings, the outer sides of the four fixed semi-rings are fixed with connecting ropes, the top ends of the four connecting ropes are fixed with traction ropes, and the lower surface of the protective plate is provided with a connecting mechanism;

[0007] The connecting mechanism includes four connecting rods, four threaded rods, four limiting rings, four threaded covers, four handles, four fixing holes and connecting components. The top ends of the four connecting rods are fixedly connected to the four corners of the lower surface of the protective plate. The threaded rods are fixed to the bottom ends of the connecting rods. The limiting rings are fixed to the outside of the connecting rods. The threaded covers are threadedly connected to the outside of the threaded rods and the top ends are fitted with the lower surface of the protective frame. The handles are fixed to the lower surface of the threaded covers. The four fixing holes are all opened at the four corners of the lower surface of the protective frame. The threaded rods are slidably inserted into the fixing holes. The lower surface of the limiting rings is fitted with the bottom wall of the inner cavity of the protective frame.

[0008] By adopting this technical solution, it is easy to disassemble and install the logging tool body

[0009] Furthermore, the connecting assembly includes two limit plates, two latches, two sockets, two slots, a rectangular frame and a protective net. The two limit plates are fixed on the left and right sides of the bottom wall of the inner cavity of the protective frame. The two latches are arranged on the left and right sides of the bottom wall of the inner cavity of the protective frame. The sockets are opened on the right side of the limit plates. The two slots are opened on the left and right sides of the logging instrument body. The rectangular frame is fixed on the opposite side of the four connecting rods. The protective net is fixed on the opposite side of the four connecting rods. The outer sides of the opposite sides of the left and right side latches are slidably inserted into the inside of the left and right side sockets and slots.

[0010] By adopting this technical solution, the anti-collision performance can be improved through the rectangular frame and the protective net.

[0011] Furthermore, the left and right sides of the logging instrument body are both in contact with the opposite sides of the left and right limit plates, and the protective net is located on the upper side of the rectangular frame.

[0012] By adopting this technical solution, the stability of the clamping fixation can be improved through the limiting plates on the left and right sides.

[0013] Furthermore, the outer diameter of the threaded rod is matched with the inner diameter of the fixing hole.

[0014] By adopting this technical solution, the fixing effect can be improved.

[0015] Furthermore, buffer frames are fixed on the left and right sides of the lower surface of the protective frame, buffer rubber blocks are fixed inside the left and right buffer frames, buffer U-shaped frames are fixed on the lower surfaces of the left and right buffer rubber blocks, and the buffer U-shaped frames are slidably connected inside the buffer frames.

[0016] By adopting this technical solution, the cushioning rubber blocks on the left and right sides can provide ground cushioning, thereby improving the safety of the logging instrument body.

[0017] Furthermore, the buffer frames on the left and right sides are symmetrically distributed on the left and right sides of the longitudinal center axis of the protection frame.

[0018] By adopting this technical solution, landing buffering can be performed through the buffer frame.

[0019] Furthermore, the handle is located on the longitudinal center axis of the threaded cap.

[0020] By adopting this technical solution, the twisting stability of the threaded cover is improved.

[0021] Furthermore, the logging instrument body is located on the longitudinal center axis of the protection frame.

[0022] By adopting this technical solution, the stability of the logging instrument body fixed inside the protective frame is improved.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] The anti-collision device of the well logging instrument can improve the anti-collision performance of the well logging instrument body through the protection frame, protection plate, protection net and rectangular frame. The four threaded covers are driven to rotate on the outside of the four threaded rods by twisting the four handles, and the four threaded covers can be removed from the outside of the four threaded rods. Then the protection plate is pulled upward to move the four threaded rods upward and out of the inside of the four fixing holes. Then, the left and right side pins are pulled in opposite directions to move the left and right side pins relatively to the outside to move out of the inside of the left and right side slots. Then, the well logging instrument body is taken out from the bottom wall of the inner cavity of the protection frame, which is convenient for disassembly and installation, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the internal structure of the protective frame of the utility model;

[0027] Figure 3 This is a schematic diagram of the connection mechanism of the utility model;

[0028] Figure 4It is a schematic diagram of the three-dimensional structure of the protective plate and the rectangular frame of the utility model.

[0029] In the figure: 1. protective plate; 2. protective frame; 3. logging instrument body; 4. fixing half ring; 5. connecting rope; 6. traction rope; 7. connecting mechanism; 71. connecting rod; 72. threaded rod; 73. limiting ring; 74. threaded cover; 75. handle; 76. fixing hole; 77. connecting assembly; 771. limiting plate; 772. latch; 773. socket; 774. slot; 775. rectangular frame; 776. protective net; 8. buffer frame; 9. buffer rubber block; 10. buffer U-shaped frame. DETAILED DESCRIPTION

[0030] 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.

[0031] See also Figure 1-2 A logging instrument anti-collision device in this embodiment includes a protective plate 1, a protective frame 2 and a logging instrument body 3. No less than two anti-collision rubber rings are fixed to the outside of the protective frame 2. Fixed semi-rings 4 are fixed at four locations on the upper surface of the protective plate 1. Connecting ropes 5 are fixed to the outsides of the four fixed semi-rings 4. Towing ropes 6 are fixed to the tops of the four connecting ropes 5. A connecting mechanism 7 is provided on the lower surface of the protective plate 1. The connecting mechanism 7 facilitates the disassembly and installation of the logging instrument body 3.

[0032] In this embodiment, buffer frames 8 are fixed on the left and right sides of the lower surface of the protective frame 2, buffer rubber blocks 9 are fixed inside the left and right buffer frames 8, buffer U-shaped frames 10 are fixed on the lower surfaces of the left and right buffer rubber blocks 9, and the buffer U-shaped frame 10 is slidably connected to the inside of the buffer frame 8. The left and right buffer frames 8 are symmetrically distributed on the left and right sides of the longitudinal center axis of the protective frame 2, and the logging instrument body 3 is located on the longitudinal center axis of the protective frame 2.

[0033] See also Figure 3-4 In order to facilitate the disassembly and installation of the logging instrument body 3, in this embodiment, the connecting mechanism 7 includes four connecting rods 71, four threaded rods 72, four limiting rings 73, four threaded covers 74, four handles 75, four fixing holes 76 and a connecting assembly 77. The top ends of the four connecting rods 71 ​​are fixedly connected to the four corners of the lower surface of the protective plate 1, the threaded rods 72 are fixed to the bottom ends of the connecting rods 71, and the limiting rings 73 are fixed to the outside of the connecting rods 71.

[0034] In this embodiment, the threaded cover 74 is threadedly connected to the outer side of the threaded rod 72 and the top end is in contact with the lower surface of the protective frame 2. The handle 75 is fixed to the lower surface of the threaded cover 74. Four fixing holes 76 are all opened at the four corners of the lower surface of the protective frame 2. The threaded rod 72 is slidably inserted into the fixing hole 76, and the lower surface of the limit ring 73 is in contact with the bottom wall of the inner cavity of the protective frame 2.

[0035] In this embodiment, the connecting component 77 includes two limit plates 771, two pins 772, two plug holes 773, two slots 774, a rectangular frame 775 and a protective net 776, and the two limit plates 771 are fixed on the left and right sides of the bottom wall of the inner cavity of the protective frame 2.

[0036] In this embodiment, the two latches 772 are arranged on the left and right sides of the bottom wall of the inner cavity of the protective frame 2. The four threaded covers 74 are driven to rotate on the outside of the four threaded rods 72 by twisting the four handles 75, and the four threaded covers 74 can be removed from the outside of the four threaded rods 72. Then the protective plate 1 is pulled upward to move the four threaded rods 72 upward and out of the inside of the four fixing holes 76. Then, the left and right side latches 772 are pulled in opposite directions to make the left and right side latches 772 move relatively to the outside to move out of the inside of the left and right side slots 774. Then, the logging instrument body 3 is taken out from the bottom wall of the inner cavity of the protective frame 2.

[0037] The socket 773 is provided on the right side of the limit plate 771, and the two slots 774 are provided on the left and right sides of the logging instrument body 3. The rectangular frame 775 is fixed on the opposite side of the four connecting rods 71. The anti-collision performance of the logging instrument body 3 can be improved by the protective frame 2, the protective plate 1, the protective net 776 and the rectangular frame 775. The traction rope 6 is pulled by the outer traction structure to move the logging instrument body 3 up and down in the well and perform operations.

[0038] In this embodiment, the protective net 776 is fixed on the opposite side of the four connecting rods 71, and the outer sides of the opposite sides of the left and right side pins 772 are slidably inserted into the left and right side holes 773 and the slots 774. The left and right sides of the logging instrument body 3 are both in contact with the opposite sides of the left and right side limit plates 771. The protective net 776 is located on the upper side of the rectangular frame 775, the outer diameter of the threaded rod 72 is matched with the inner diameter of the fixing hole 76, and the handle 75 is located on the longitudinal center axis of the threaded cover 74.

[0039] It should be noted that when installing the logging instrument body 3, the logging instrument body 3 can be placed between the opposite sides of the left and right side limit plates 771 and the left and right side pins 772 can be operated so that the outer sides of the opposite sides of the left and right side pins 772 are slidably inserted into the left and right side plug holes 773 and the slots 774. At this time, the four threaded rods 72 are slidably inserted into the four fixing holes 76 and threadedly connected to the outer sides of the bottom ends of the four threaded rods 72 through four threaded covers 74. The installation is then completed, which is convenient for disassembly and installation and improves practicality.

[0040] The working principle of the above embodiment is:

[0041] The anti-collision performance of the logging instrument body 3 can be improved by the protection frame 2, the protection plate 1, the protection net 776 and the rectangular frame 775. The logging instrument body 3 can be moved up and down in the well and operated by pulling the traction rope 6 through the outer traction structure. The four threaded covers 74 can be driven to rotate on the outside of the four threaded rods 72 by twisting the four handles 75. The four threaded covers 74 can be removed from the outside of the four threaded rods 72, and then the protection plate 1 is pulled upward to move the four threaded rods 72 upward and out of the four fixing holes 76. Then, the left and right side pins 772 are pulled in opposite directions to move the left and right side pins 772 relative to each other. The outside is moved out of the left and right side slots 774, and then the logging instrument body 3 is taken out from the bottom wall of the inner cavity of the protective frame 2. When installing the logging instrument body 3, the logging instrument body 3 can be placed between the opposite sides of the left and right side limit plates 771 and the left and right side pins 772 are operated to make the outsides of the opposite sides of the left and right side pins 772 slide and plug into the left and right side plug holes 773 and the slots 774. At this time, the four threaded rods 72 are slidably plugged into the inside of the four fixing holes 76, and are threadedly connected to the outside of the bottom ends of the four threaded rods 72 through four threaded covers 74. Then the installation is completed, which is convenient for disassembly and installation and improves practicality.

Claims

1. A logging tool anti-collision device, comprising a protection plate (1), a protection frame (2) and a logging tool body (3), characterized in that: Four fixing half rings (4) are fixed to the upper surface of the protective plate (1), connecting ropes (5) are fixed to the outer sides of the four fixing half rings (4), traction ropes (6) are fixed to the top ends of the four connecting ropes (5), and a connecting mechanism (7) is provided on the lower surface of the protective plate (1); The connecting mechanism (7) comprises four connecting rods (71), four threaded rods (72), four limiting rings (73), four threaded covers (74), four handles (75), four fixing holes (76) and a connecting assembly (77). The top ends of the four connecting rods (71) are fixedly connected to the four corners of the lower surface of the protective plate (1). The threaded rods (72) are fixed to the bottom ends of the connecting rods (71). The limiting rings (73) are fixed to the outside of the connecting rods (71). The threaded covers (74) are threadedly connected to the outside of the threaded rods (72) and the top ends thereof are in contact with the lower surface of the protective frame (2). The handles (75) are fixed to the lower surface of the threaded covers (74). The four fixing holes (76) are all provided at the four corners of the lower surface of the protective frame (2). The threaded rods (72) are slidably inserted into the fixing holes (76). The lower surface of the limiting rings (73) is in contact with the bottom wall of the inner cavity of the protective frame (2).

2. A logging tool anti-collision device according to claim 1, characterized in that: The connection assembly (77) comprises two limit plates (771), two latches (772), two insertion holes (773), two slots (774), a rectangular frame (775) and a protective net (776). The two limit plates (771) are fixed on the left and right sides of the bottom wall of the inner cavity of the protective frame (2). The two latches (772) are arranged on the left and right sides of the bottom wall of the inner cavity of the protective frame (2). The insertion holes (773) are arranged on the right side of the limit plates (771). The two slots (774) are arranged on the left and right sides of the logging instrument body (3). The rectangular frame (775) is fixed on the opposite side of the four connecting rods (71). The protective net (776) is fixed on the opposite side of the four connecting rods (71). The outer sides of the opposite sides of the left and right side latches (772) are slidably plugged into the inside of the left and right side insertion holes (773) and the slots (774).

3. A logging tool anti-collision device according to claim 2, characterized in that: The left and right sides of the logging instrument body (3) are both in contact with the opposite sides of the left and right limit plates (771), and the protective net (776) is located on the upper side of the rectangular frame (775).

4. The anti-collision device for logging tool according to claim 1, characterized in that: The outer diameter of the threaded rod (72) matches the inner diameter of the fixing hole (76).

5. The anti-collision device for logging tool according to claim 1, characterized in that: Buffer frames (8) are fixed to the left and right sides of the lower surface of the protection frame (2), and buffer rubber blocks (9) are fixed inside the buffer frames (8) on the left and right sides. Buffer U-shaped frames (10) are fixed to the lower surfaces of the buffer rubber blocks (9) on the left and right sides, and the buffer U-shaped frames (10) are slidably connected to the inside of the buffer frames (8).

6. A logging tool anti-collision device according to claim 5, characterized in that: The buffer frames (8) on the left and right sides are symmetrically distributed on the left and right sides of the longitudinal center axis of the protection frame (2).

7. The anti-collision device for logging tool according to claim 1, characterized in that: The handle (75) is located on the longitudinal center axis of the threaded cover (74).

8. The anti-collision device for logging tool according to claim 1, characterized in that: The logging instrument body (3) is located on the longitudinal center axis of the protection frame (2).

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