Comprehensive logging depth metering equipment suitable for directional drilling

Abstract

The utility model discloses depth metering equipment suitable for directional drilling comprehensive logging, and relates to the technical field of directional drilling comprehensive logging. The device comprises a reinforcing and supporting structure, a sleeve hoop, a surface grooving drill rod, a connecting and fixing bracket and a bearing fixing seat, a synchronous cog belt of which the lower surface is in contact with the upper surface of the surface grooving drill rod is arranged in the bearing fixing seat; a plurality of synchronous belt wheels are arranged in the synchronous cog belt from left to right at intervals, and the inner surface of the synchronous cog belt is matched with the synchronous belt wheels; the two ends of the synchronous belt wheel are hinged to the bearing fixing base. And the encoder is connected with one of the synchronous belt wheels. According to the utility model, the problem that the detection depth counting is inaccurate when a conventional single-pulley depth counting device encounters a surface grooving drill rod is solved, and the depth counting precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of directional drilling comprehensive well logging, and more specifically is a depth measuring device suitable for directional drilling comprehensive well logging. Background Art

[0002] For some difficult and key areas of geological exploration, such as some areas where conventional ground shaft drilling and geophysical survey work cannot be carried out, or some tunnel areas with relatively complex geological conditions, where the tunnel advanced geological forecast cannot meet the construction safety requirements in terms of detection range and data accuracy, directional drilling supplemented by in-hole comprehensive logging technology can intuitively and accurately understand the geological conditions of the rock formations, and accurately divide the lithology changes of the surrounding rocks, the distribution range of the broken zones, etc., which can assist geologists in completing precise geological exploration in difficult and key areas.

[0003] The storage-type comprehensive logging equipment is used to test the geophysical parameters such as wave velocity and rock resistivity of directional drilling and record the whole hole. This is the development direction of comprehensive logging. The storage-type comprehensive logging equipment can realize the comprehensive logging work of directional drilling with the help of the push of the drill pipe.

[0004] For spiral drill pipes with spiral grooves or drill pipes with uneven grooved surfaces, when pushing the storage-type comprehensive logging equipment for comprehensive drilling logging, the conventional single-pulley depth measuring equipment cannot accurately count the moving length of the drill pipe, resulting in detection depth and positioning errors during the logging process, affecting the detection accuracy.

[0005] Therefore, it is necessary to develop a depth measuring device suitable for directional drilling comprehensive logging to improve the counting accuracy of drill pipe moving length and improve the comprehensive logging accuracy. Utility Model Content

[0006] The purpose of the utility model is to overcome the shortcomings of the above-mentioned background technology and to provide a depth measuring device suitable for directional drilling comprehensive logging.

[0007] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a depth measuring device suitable for directional drilling comprehensive logging, characterized in that it includes a reinforcement support structure, a casing clamp connected to the left side of the reinforcement support structure, a surface grooved drill pipe connected to the casing clamp, a connecting and fixing bracket located above the surface grooved drill pipe and hinged to the left side of the upper end of the casing clamp, and a bearing fixing seat in the middle that is detachably connected to the right end of the connecting and fixing bracket;

[0008] The bearing fixing seat has a synchronous toothed belt whose lower surface contacts the upper surface of the grooved drill rod; the synchronous toothed belt has a plurality of synchronous pulleys arranged at intervals from left to right, and the inner surface of the synchronous toothed belt matches the synchronous pulley; both ends of the synchronous pulley are hinged to the bearing fixing seat;

[0009] The encoder is connected to one of the timing pulleys.

[0010] In the above technical solution, a combination interface is provided at the right end of the connecting and fixing bracket, a pin is provided at the bearing fixing seat, and the connecting and fixing bracket is detachably connected to the pin via the combination interface.

[0011] In the above technical solution, a rack is provided on the inner surface of the synchronous toothed belt, the surface of the synchronous belt pulley is a gear structure, and the rack meshes with the contact surface of the gear structure.

[0012] In the above technical solution, the left side of the lower end of the sleeve clamp is connected to the pin through a tension spring.

[0013] In the above technical solution, the bearing fixing seat is a rectangular frame structure, and the left end of the bearing fixing seat is located on the inner side of the connecting fixing bracket.

[0014] In the above technical solution, the combined interface includes a major arc structure and a square structure located on the right side of the major arc structure. The middle part of the pin shaft is a small square structure, and the upper and lower ends are semicircular structures. The diameter of the major arc structure is greater than the length of the small square structure plus the sum of the diameters of the two semicircular structures.

[0015] In the above technical solution, there are three synchronous pulleys, and the encoder is rigidly connected to the middle synchronous pulley via a rotating shaft.

[0016] In the above technical solution, a hook rod is provided on the left side of the lower end of the sleeve clamp, the lower end of the tension spring is hooked on the hook rod, and the upper end is hooked on the pin shaft.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1) The utility model solves the problem of inaccurate depth counting when a conventional single-pulley depth measuring device encounters a surface grooved drill rod, and the utility model improves the depth counting accuracy.

[0019] 2) The utility model has a modular design, is easy to disassemble and assemble, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 It is a structural schematic diagram of the bearing fixing seat.

[0022] Figure 3 A schematic diagram of the structure for connecting and fixing the bracket.

[0023] Among them, 1-reinforcement support structure, 2-casing clamp, 3-surface grooved drill rod, 31-hook rod, 4-connecting fixed bracket, 41-combination interface, 411-superior arc structure, 412-square structure, 5-bearing fixing seat, 51-synchronous toothed belt, 511-rack, 52-synchronous pulley, 521-gear structure, 53-pin shaft, 531-small square structure, 532-semicircular structure, 6-encoder, 7-tension spring. DETAILED DESCRIPTION

[0024] The following is a detailed description of the implementation of the utility model in conjunction with the accompanying drawings, but they do not constitute a limitation of the utility model and are only used as examples. At the same time, the advantages of the utility model will become clearer and easier to understand through the description.

[0025] Referring to the attached drawings, it can be seen that: a depth measuring device suitable for directional drilling comprehensive logging, characterized in that: it includes a reinforcement support structure 1, a casing clamp 2 connected to the left side of the reinforcement support structure 1, a surface grooved drill pipe 3 connected to the casing clamp 2, a connecting and fixing bracket 4 located above the surface grooved drill pipe 3 and hinged to the left side of the upper end of the casing clamp 2, and a bearing fixing seat 5 detachably connected to the right end of the connecting and fixing bracket 4 in the middle;

[0026] The bearing fixing seat 5 has a synchronous toothed belt 51 whose lower surface contacts the upper surface of the surface grooved drill rod 3; a plurality of synchronous pulleys 52 are arranged in the synchronous toothed belt 51 from left to right, and the inner surface of the synchronous toothed belt 51 matches the synchronous pulleys 52; both ends of the synchronous pulleys 52 are hinged to the bearing fixing seat 5;

[0027] The encoder 6 is connected to one of the synchronous belt wheels 52 , and the encoder 6 is connected to a numerical control host or a comprehensive well logging host system to count the rotation length of the synchronous toothed belt 51 .

[0028] The right end of the connecting and fixing bracket 4 is provided with a combination interface 41 , and the bearing fixing seat 5 is provided with a pin shaft 53 . The connecting and fixing bracket 4 is detachably connected to the pin shaft 53 via the combination interface 41 .

[0029] The inner surface of the synchronous toothed belt 51 is provided with a rack 511 , and the surface of the synchronous pulley 52 is a gear structure 521 . The rack 511 meshes with the contact surface of the gear structure 521 .

[0030] The left side of the lower end of the sleeve clamp 2 is connected to the pin 53 through a tension spring 7.

[0031] The bearing fixing seat 5 is a rectangular frame structure, and the left end of the bearing fixing seat 5 is located inside the connecting fixing bracket 4 .

[0032] The combined interface 41 includes a major arc structure 411 and a square structure 412 located on the right side of the major arc structure 411. The middle part of the pin shaft 53 is a small square structure 531, and the upper and lower ends are semicircular structures 532. The diameter of the major arc structure 411 is greater than the length of the small square structure 531 plus the sum of the diameters of the two semicircular structures 532. By rotating the combined interface 41 90 degrees clockwise around the pin shaft 53, the connecting fixing bracket 4 can be disassembled or assembled from the bearing fixing seat 5.

[0033] There are three synchronous belt pulleys 52, and the encoder 6 is rigidly connected to the middle synchronous belt pulley 52 via a rotating shaft.

[0034] The left side of the lower end of the casing clamp 2 is provided with a hook rod 31, and the lower end of the tension spring 7 is hooked on the hook rod 31, and the upper end is hooked on the pin 53. The tension spring 7 makes the synchronous toothed belt 51 and the surface grooved drill rod 3 fit tightly.

[0035] The method of using the utility model comprises the following steps:

[0036] Step 1: When the drilling rig pushes the surface grooved drill pipe 3 to slowly send the storage type integrated logging equipment into the borehole, the connecting fixing bracket 4 and the bearing fixing seat 5 are combined and fixed just above the surface grooved drill pipe 3 (such as Figure 1 shown);

[0037] At the same time, the lower end of the tension spring 7 is hooked on the hook rod 31, and the upper end is hooked on the pin 53. At this time, the tension spring 7 is in a tensioned state, so that the synchronous toothed belt 51 and the surface grooved drill rod 3 are closely fitted;

[0038] Step 2: The surface groove drill rod 3 slowly moves toward the bottom of the hole, which drives the rotation of the synchronous toothed belt 51. The teeth of the synchronous pulley 52 engage with the teeth of the synchronous toothed belt 51 to rotate the synchronous pulley 52. ​​The second synchronous toothed belt 51 in the middle is hard-connected with the encoder 6 through the rotating shaft. The encoder 6 counts the moving length of the surface groove drill rod 3.

[0039] In summary, the utility model has the advantages of modular design, easy disassembly and assembly, and easy use. At the same time, it solves the problem of inaccurate depth detection and counting when the conventional single-pulley depth meter encounters a surface grooved drill rod. The utility model avoids the depth measurement error caused by the surface grooves of the surface grooved drill rod 3 through the design of three synchronous pulleys 52 and a synchronous toothed belt 51, thereby improving the counting accuracy of the moving length of the drill rod.

[0040] Other parts not described belong to the prior art.

Claims

1. A depth measuring device suitable for directional drilling comprehensive logging, characterized in that: It comprises a reinforcement support structure (1), a casing clamp (2) connected to the left side of the reinforcement support structure (1), a surface grooved drill rod (3) connected to the casing clamp (2), a connecting and fixing bracket (4) located above the surface grooved drill rod (3) and hinged to the left side of the upper end of the casing clamp (2), and a bearing fixing seat (5) in the middle part which is detachably connected to the right end of the connecting and fixing bracket (4); The bearing fixing seat (5) has a synchronous toothed belt (51) whose lower surface contacts the upper surface of the grooved drill rod (3); a plurality of synchronous pulleys (52) are arranged at intervals from left to right in the synchronous toothed belt (51), and the inner surface of the synchronous toothed belt (51) matches the synchronous pulley (52); both ends of the synchronous pulley (52) are hinged to the bearing fixing seat (5); The encoder (6) is connected to one of the synchronous pulleys (52).

2. A depth measuring device suitable for directional drilling comprehensive logging according to claim 1, characterized in that: The right end of the connecting and fixing bracket (4) is provided with a combination interface (41), the bearing fixing seat (5) is provided with a pin shaft (53), and the connecting and fixing bracket (4) is detachably connected to the pin shaft (53) via the combination interface (41).

3. A depth measuring device suitable for directional drilling comprehensive logging according to claim 2, characterized in that: The inner surface of the synchronous toothed belt (51) is provided with a rack (511), the surface of the synchronous pulley (52) is a gear structure (521), and the contact surface of the rack (511) and the gear structure (521) are meshed.

4. The depth measuring device suitable for directional drilling comprehensive logging according to claim 3, characterized in that: The left side of the lower end of the sleeve clamp (2) is connected to the pin shaft (53) via a tension spring (7).

5. The depth measuring device suitable for directional drilling comprehensive logging according to claim 4, characterized in that: The bearing fixing seat (5) is a rectangular frame structure, and the left end of the bearing fixing seat (5) is located inside the connecting fixing bracket (4).

6. The depth measuring device suitable for directional drilling comprehensive logging according to claim 5, characterized in that: The combined interface (41) comprises a major arc structure (411) and a square structure (412) located on the right side of the major arc structure (411); the middle part of the pin shaft (53) is a small square structure (531), and the upper and lower ends are semicircular structures (532); the diameter of the major arc structure (411) is greater than the length of the small square structure (531) plus the sum of the diameters of the two semicircular structures (532).

7. The depth measuring device suitable for directional drilling comprehensive logging according to claim 6, characterized in that: There are three synchronous belt pulleys (52), and the encoder (6) is rigidly connected to the middle synchronous belt pulley (52) via a rotating shaft.

8. The depth measuring device suitable for directional drilling comprehensive logging according to claim 7, characterized in that: A hook rod (31) is provided on the left side of the lower end of the sleeve clamp (2); the lower end of the tension spring (7) is hooked on the hook rod (31) and the upper end is hooked on the pin shaft (53).

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