A well logging instrument for petroleum geology exploration

Abstract

The utility model discloses a kind of well logging instruments for petroleum geological exploration, it is related to well logging instrument technical field;And the utility model includes well logging instrument main body, well logging instrument main body outer circle is fixedly connected with installation cover, the installation cover bottom end is detachably equipped with mounting ring, and mounting ring is sleeved in well logging instrument main body outer circle, top groove is arranged in the center of the top end of mounting ring, gear ring is rotatably connected in the center of the inside bottom end of top groove, three second gears are engagedly connected in the center of the inside bottom end of top groove close to gear ring, inner cavity is arranged in the inside of mounting ring;In the utility model, mounting ring is installed to the inside of installation cover, to realize the effect of protecting servo motor, and then can avoid silt in working environment damaging servo motor circuit, in addition, mounting ring and installation cover are detachable, so that user can carry out regular maintenance to servo motor, it is easy to operate, improve the convenience of use.

Description

Technical Field

[0001] This utility model relates to the field of well logging instrument technology, specifically a well logging instrument for petroleum geological exploration. Background Technology

[0002] The logging instrument consists of a surface instrument and a downhole instrument. In actual logging operations, the downhole instrument is operated manually or controlled by computer software. The collected electrical signals are transmitted to the main unit of the surface instrument via cable. During the logging process, the instrument must be kept in the middle position inside the well.

[0003] When logging wells in petroleum geological exploration, it is necessary to ensure that the instrument is located in the center of the well. The logging instrument itself is often integrated with or uses a centralizer. The operation of the centralizer usually requires a drive source to operate it. However, most of the installed drive sources are generally set up in an exposed manner (such as a logging instrument for petroleum geological exploration in patent publication number CN221346829U). In the actual working conditions of petroleum logging, the downhole environment is extremely complex and harsh. The mud in the well contains a large number of hard particles such as quartz sand. These hard particles can easily penetrate into the exposed drive source with the flow of mud, causing short circuits and greatly increasing the failure rate of the equipment. In order to solve the above problems, the inventors have proposed a logging instrument for petroleum geological exploration. Utility Model Content

[0004] To address the problem that in actual oil well logging operations, the downhole environment is extremely complex and harsh, and the drilling mud contains a large amount of hard particles such as quartz sand. These hard particles, as the mud flows, can easily penetrate the exposed drive source and cause short circuits. The purpose of this invention is to provide a logging instrument for oil geological exploration.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a logging instrument for petroleum geological exploration, comprising a logging instrument body, an installation cover fixedly connected to the outer ring of the logging instrument body, an installation ring detachably provided at the bottom end of the installation cover, and the installation ring sleeved on the outer ring of the logging instrument body, a top groove opened at the center of the top of the installation ring, a gear ring rotatably connected at the center of the bottom end inside the top groove, three second gears meshing with the bottom end of the top groove near the gear ring, an inner cavity opened inside the installation ring, three annularly distributed threaded cylinders slidably connected to the side wall of the inner cavity near the center, a screw rotatably connected to the top of the threaded cylinder, and the top of the screw penetrating the inner cavity and fixedly connected to the second gear, an auxiliary inclined platform fixedly connected to the outer ring of the threaded cylinder near the center, and an installation shaft slidably inserted into the outer ring of the installation ring near the threaded cylinder, a limit plate fixedly connected to the side end of the installation shaft, a roller fixedly connected to the side end of the limit plate, and the roller cooperating with the auxiliary inclined platform, and an installation plate fixedly connected to the other end of the installation shaft.

[0006] Preferably, a first gear is rotatably connected to the bottom end of the top groove near the gear ring, and the first gear meshes with the gear ring.

[0007] Preferably, a servo motor is provided on the inner wall of the top groove near the first gear, and the output end of the servo motor is fixedly connected to the first gear.

[0008] Preferably, the outer ring of the mounting ring has an external thread near the top, and the inner wall of the mounting cover has an internal thread that matches the external thread.

[0009] Preferably, a return spring is fixedly connected to the side end of the limiting disc and sleeved on the outer ring of the mounting shaft, and the other end of the return spring is fixedly connected to the inner cavity.

[0010] Preferably, the side end of the mounting plate is provided with a plurality of evenly distributed ball bearings.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. In this utility model, by installing the mounting ring inside the mounting cover, the servo motor is protected, thereby preventing mud and sand in the working environment from damaging the servo motor circuit. In addition, the mounting ring and the mounting cover are detachable, which makes it convenient for users to perform regular maintenance on the servo motor. The operation is simple and the ease of use is improved.

[0013] 2. In this utility model, the starting servo motor drives the first gear to rotate, which in turn causes the meshing gear ring to drive multiple second gears to rotate synchronously. The second gears drive the screw to rotate, causing the threaded cylinder to rise and fall synchronously. Then, with the cooperation of the rollers, the distance between the mounting plate and the mounting ring is adjusted, thereby achieving the effect of squeezing and limiting the inner wall of the oil well, so that the main body of the logging instrument is located in the center of the oil well. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a cross-sectional view of the mounting cover of this utility model.

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of the mounting ring of this utility model.

[0018] Figure 4 This is a schematic diagram of the threaded cylinder structure of this utility model.

[0019] In the diagram: 1. Logging instrument body; 2. Mounting cover; 21. Internal thread; 22. External thread; 3. Mounting ring; 31. Inner cavity; 32. Gear ring; 33. First gear; 34. Servo motor; 35. Second gear; 36. Screw; 4. Threaded cylinder; 41. Auxiliary inclined platform; 42. Mounting shaft; 43. Return spring; 44. Limiting plate; 45. Roller; 46. Mounting plate; 47. Ball bearing. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example: Figure 1-4As shown, this utility model provides a technical solution: a logging instrument for petroleum geological exploration, including a logging instrument body 1, an installation cover 2 fixedly connected to the outer ring of the logging instrument body 1, an installation ring 3 detachably provided at the bottom end of the installation cover 2, and the installation ring 3 is sleeved on the outer ring of the logging instrument body 1, a top groove is opened at the center of the top of the installation ring 3, a gear ring 32 is rotatably connected at the center of the bottom end inside the top groove, three second gears 35 are meshed and connected at the bottom end inside the top groove near the gear ring 32, an inner cavity 31 is opened inside the installation ring 3, three threaded cylinders 4 arranged in a ring are slidably connected to the side wall of the inner cavity 31 near the center, a screw 36 is rotatably connected to the top of the threaded cylinder 4, and the top of the screw 36 passes through the inner cavity 31 and is fixedly connected to the second gears 35, an auxiliary inclined platform 41 is fixedly connected to the outer ring of the threaded cylinder 4 near the center, and a mounting ring 3 is slidably inserted near the threaded cylinder 4 on the outer ring of the installation ring 3. The mounting shaft 42 has a limiting disk 44 fixedly connected to one side, and a roller 45 fixedly connected to the other side of the limiting disk 44. The roller 45 cooperates with the auxiliary inclined platform 41. The other end of the mounting shaft 42 is fixedly connected to a mounting disk 46. The mounting ring 3 is sleeved on the outer ring of the logging instrument body 1, and a high-temperature resistant sealing ring is provided between the mounting ring and the logging instrument body 1. The sealing ring is made of fluororubber. The mounting disk 46 is made of tungsten carbide alloy, which has high wear resistance. This solution aims to protect the physical structure, but does not protect the circuit and software control. The proposed processing circuit is only to supplement the feasibility and authenticity of this utility model. This utility model does not require protection of the algorithm and circuit technology. It is worth emphasizing that although this solution does not describe the electronic control program in detail, those skilled in the art can be familiar with and apply it based on their professional knowledge.

[0022] The bottom of the top groove is rotatably connected to the first gear 33 near the gear ring 32, and the first gear 33 meshes with the gear ring 32.

[0023] By adopting the above technical solution, the gear ring 32 rotates under the action of the first gear 33, thereby enabling the multiple meshing second gears 35 to rotate synchronously.

[0024] A servo motor 34 is installed on the inner wall of the top groove near the first gear 33, and the output end of the servo motor 34 is fixedly connected to the first gear 33.

[0025] By adopting the above technical solution, the working servo motor 34 is started, thereby causing the fixedly connected first gear 33 to rotate, which in turn drives the meshing gear ring 32 to rotate.

[0026] The outer ring of the mounting ring 3 has an external thread 22 near the top, and the inner wall of the mounting cover 2 has an internal thread 21 that matches the external thread 22.

[0027] By adopting the above technical solution, the external thread 22 is a trapezoidal thread, and the threaded connection between the two is coated with high-temperature resistant thread adhesive, reducing the probability of loosening.

[0028] A return spring 43 is fixedly connected to the side end of the limiting plate 44 and sleeved on the outer ring of the mounting shaft 42, and the other end of the return spring 43 is fixedly connected to the inner cavity 31.

[0029] By adopting the above technical solution and setting a reset spring 43, the effect of lifting and moving the mounting plate 46 back and forth can be achieved.

[0030] The mounting plate 46 has several evenly distributed ball bearings 47 on its side.

[0031] By adopting the above technical solution, the ball 47 is made of silicon nitride ceramic material. The ball 47 is installed on the groove on the surface of the mounting plate 46. A retaining ring is provided on the groove to prevent the ball 47 from falling off.

[0032] Working principle: When using this device, the mounting ring 3 is first installed into the mounting cover 2 using the internal thread 21 and the external thread 22, which facilitates the protection of the servo motor 34 and prevents the mud and sand in the working environment from damaging the circuit of the servo motor 34. The mounting ring 3 and the mounting cover 2 are designed to be detachable, which facilitates the regular maintenance of the servo motor 34, thereby improving the convenience of use and making the operation simple.

[0033] During operation, the servo motor 34 is activated, causing the fixedly connected first gear 33 to rotate. This causes the meshing gear ring 32 to drive multiple second gears 35 to rotate synchronously (the second gears 35 can synchronously drive the screw 36 to rotate, thereby causing the threaded cylinder 4 to rise and fall synchronously. The threaded installation patterns between multiple sets of screws 36 and threaded cylinder 4 are the same, thus enabling multiple auxiliary inclined platforms 41 to rise and fall simultaneously). Then, with the cooperation of the screw 36, the threaded cylinder 4, which is connected by a threaded rotation, can rise. This allows the roller 45 to drive the mounting shaft 42 to move away from the inner cavity 31, thereby adjusting the distance between the mounting plate 46 and the mounting ring 3. This achieves the effect of squeezing and limiting the inner wall of the oil well, thereby placing the logging instrument body 1 at the center of the oil well, which facilitates the operation of the logging instrument body 1.

[0034] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A logging instrument for petroleum geological exploration, comprising a logging instrument body (1), characterized in that: The logging instrument body (1) is fixedly connected to an installation cover (2) on its outer ring. The bottom of the installation cover (2) is detachably provided with an installation ring (3), and the installation ring (3) is sleeved on the outer ring of the logging instrument body (1). A top groove is opened at the center of the top of the installation ring (3). A gear ring (32) is rotatably connected at the center of the bottom of the top groove. Three second gears (35) are meshed at the bottom of the top groove near the gear ring (32). The mounting ring (3) has an inner cavity (31) inside. Three threaded cylinders (4) arranged in a ring are slidably connected to the side wall of the inner cavity (31) near the center. The top of the threaded cylinder (4) is threadedly connected to a screw (36), and the top of the screw (36) passes through the inner cavity (31) and is fixedly connected to the second gear (35). An auxiliary ramp (41) is fixedly connected to the outer ring of the threaded cylinder (4) near the center. Mounting shafts (42) are slidably inserted into the outer ring of the mounting ring (3) near the threaded cylinder (4). A limiting plate (44) is fixedly connected to the side end of the mounting shaft (42). A roller (45) is fixedly connected to the side end of the limiting plate (44), and the roller (45) cooperates with the auxiliary ramp (41). The other end of the mounting shaft (42) is fixedly connected to the mounting plate (46).

2. The logging instrument for petroleum geological exploration as described in claim 1, characterized in that, The bottom end of the top groove is rotatably connected to the first gear (33) near the gear ring (32), and the first gear (33) meshes with the gear ring (32).

3. The logging instrument for petroleum geological exploration as described in claim 2, characterized in that, A servo motor (34) is provided on the inner wall of the top groove near the first gear (33), and the output end of the servo motor (34) is fixedly connected to the first gear (33).

4. The logging instrument for petroleum geological exploration as described in claim 1, characterized in that, The mounting ring (3) has an external thread (22) on its outer ring and near the top, and the mounting cover (2) has an internal thread (21) on its inner wall that matches the external thread (22).

5. A logging instrument for petroleum geological exploration as described in claim 1, characterized in that, A reset spring (43) is fixedly connected to the side end of the limiting plate (44) and sleeved on the outer ring of the mounting shaft (42), and the other end of the reset spring (43) is fixedly connected to the inner cavity (31).

6. A logging instrument for petroleum geological exploration as described in claim 1, characterized in that, The mounting plate (46) has a number of evenly distributed ball bearings (47) on its side.

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