Totally sealed small hole acoustic string calibrator
By using the air blowing assembly and air guide plate structure of the fully sealed small-bore acoustic scale, the problem of sensor components being covered by impurities is solved, improving measurement accuracy and recording of wellbore diameter changes, and enabling the cleaning and storage of impurities.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 安徽省煤田地质局第三勘探队
- Filing Date
- 2023-12-27
- Publication Date
- 2026-05-29
AI Technical Summary
When existing sound velocity scales are used inside small wells, impurities may adhere to the outer surface, causing the sensing components to be obscured and resulting in inaccurate measurements.
A fully sealed small-bore acoustic scale was designed, comprising a blowing assembly and an air guide plate structure. The sensor is continuously cleaned by blowing air through the guide shell and air guide plate. Combined with the rubber pad and collection shell structure, the wellbore legs are protected and wellbore impurities are collected, ensuring the cleanliness of the sensor.
This effectively prevents impurities from obscuring the sensor, improves measurement accuracy, and enables accurate recording of wellbore diameter changes and observable storage and removal of impurities.
Smart Images
Figure CN224300868U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of well logging instrument technology, specifically relating to a fully sealed small-bore acoustic scale. Background Technology
[0002] The fully sealed small-bore acoustic calibrator consists of a main frame, a far-receiving crystal contact arm, an arc-shaped end face, a near-receiving crystal contact arm, and a transmitting crystal contact arm. Its purpose is to calibrate and check small-bore acoustic logging tools to ensure measurement accuracy and stability. When using this calibrator, simply align it with the acoustic instrument, and each crystal will simulate an acoustic signal. By detecting the signal propagation time within the calibrator, the instrument's measurement accuracy and stability can be checked. It can be used both indoors and in the field, and can be widely applied in small-bore multi-bottom branch well logging.
[0003] In the existing technology, when the sound velocity scale is used to move up and down inside a small well, impurities may adhere to its outer surface, which may cover the sound velocity scale's sensing components. This does not take into account the problem that the sensing components may be inaccurate if they are covered. Utility Model Content
[0004] The purpose of this invention is to provide a fully sealed acoustic scale for small wellbore to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A fully sealed small-bore acoustic scale includes: a scale body, wellbore legs, and a mounting cylinder. The wellbore legs are symmetrically and movably connected to the outside of the scale body, and four sets of wellbore legs are symmetrically arranged. The mounting cylinder is disposed inside the scale body, and a blowing assembly is disposed inside the mounting cylinder. Four sets of through slots are symmetrically opened through the inside of the mounting cylinder. Four sets of connecting shells are symmetrically connected to the outside of the mounting cylinder, and the connecting shells are located on one side of the through slots. A guide shell is connected through the top of the connecting shell, and the guide shell is an arc shell. Multiple sets of air guide plates are symmetrically arranged on the inner wall of the guide shell, and the air guide plates are inclined.
[0007] Preferably, a hanging ring is connected to the top of the scale body.
[0008] Preferably, the inside of the scale body is provided with a sensor, and four sets of sensors are symmetrically arranged, with the sensors located diagonally above the guide shell.
[0009] Preferably, a telescopic component is fixedly and movably connected to one side of the wellbore leg, and the telescopic component is fixedly and movably connected to the scale body.
[0010] Preferably, a roller is fixedly and movably connected to the other end of the wellbore leg, and a rubber pad is wrapped around the outside of the roller.
[0011] Preferably, a collection shell is connected to the bottom of the wellbore leg, an observation port is connected through one side of the collection shell, and a discharge port is connected through the bottom of the collection shell.
[0012] Preferably, the interior of the mounting cylinder is symmetrically connected with multiple sets of filter screens, and four sets of filter screens are symmetrically arranged.
[0013] Preferably, a battery is connected to the top inner wall of the mounting cylinder, a support mesh plate is connected to the inner wall of the mounting cylinder, and the top of the support mesh plate is connected to the bottom of the blower assembly.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] (1) By setting up components such as a blower assembly and a guide plate, when the blower assembly is running, the external air can enter the interior of the mounting cylinder after being adsorbed and purified by the filter screen. The blower assembly accelerates the air entering the mounting cylinder and enters the interior of the connecting shell through the through groove. The guide shell guides the airflow, and the guide plate is set at an angle inside the guide shell. The accelerated air can be blown towards the sensor through the guide plate to continuously blow and clean the sensor's detection end, avoiding impurities adsorbed on the sensor's detection end and causing obstruction, thus effectively improving the accuracy of the measurement of the fully sealed small wellbore acoustic scale.
[0016] (2) By setting up components such as a collection shell and rollers, the present invention can rotate when the rubber pad contacts the inner wall of the wellbore, which can protect one end of the wellbore leg. During the rotation of the rubber pad, some of the wellbore impurities carried on the surface can fall into the inside of the collection shell. The collection shell stores the impurities inside the wellbore. The layering of the impurities collected inside the collection shell can be observed through the observation port. The impurities collected inside the collection shell can be released through the discharge port, so that the fully sealed small wellbore acoustic scale can achieve the sampling effect. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the wellbore leg structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the mounting cylinder of this utility model;
[0020] Figure 4 This is a schematic diagram of the structure at point A of this utility model;
[0021] Figure 5 This is a schematic diagram of the structure at point B of this utility model.
[0022] In the diagram: 1. Scale body; 2. Hanging ring; 3. Well diameter leg; 4. Telescopic assembly; 5. Roller; 6. Rubber pad; 7. Collection shell; 8. Observation port; 9. Discharge port; 10. Sensor; 11. Mounting cylinder; 12. Filter screen; 13. Battery; 14. Support mesh plate; 15. Blowing assembly; 16. Through groove; 17. Connecting shell; 18. Guide shell; 19. Air guide plate. Detailed Implementation
[0023] 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.
[0024] Example 1:
[0025] Please see Figures 1-5 As shown, a fully sealed small-bore acoustic scale includes: a scale body 1, caliper legs 3, and a mounting cylinder 11. The caliper legs 3 are symmetrically and movably connected to the outside of the scale body 1, and four sets of caliper legs 3 are symmetrically arranged. The mounting cylinder 11 is located inside the scale body 1, and a blower assembly 15 is provided inside the mounting cylinder 11. Four sets of through slots 16 are symmetrically opened inside the mounting cylinder 11. Four sets of connecting shells 17 are symmetrically connected to the outside of the mounting cylinder 11, and the connecting shells 17 are located on one side of the through slots 16. A guide shell 1 is connected through the top of the connecting shell 17. 8. The guide shell 18 is an arc shell. Multiple sets of air guide plates 19 are symmetrically arranged on the inner wall of the guide shell 18. The air guide plates 19 are inclined. Sensors 10 are arranged inside the scale body 1. Four sets of sensors 10 are symmetrically arranged. The sensors 10 are located diagonally above the guide shell 18. Multiple sets of filters 12 are symmetrically connected through the inside of the mounting cylinder 11. Four sets of filters 12 are symmetrically arranged. A battery 13 is connected to the top inner wall of the mounting cylinder 11. A support mesh plate 14 is connected to the inner wall of the mounting cylinder 11. The top of the support mesh plate 14 is connected to the bottom of the blower assembly 15.
[0026] Specifically, the mounting cylinder 11 is installed inside the scale body 1. The mounting cylinder 11 provides installation space and protection for the internal working components. External air can enter the mounting cylinder 11 through the filter 12, which filters and blocks impurities in the incoming air. The support mesh plate 14 is a circular mesh plate, which supports the blower assembly 15 and facilitates its electrical connection to the battery 13. The battery 13 is an electrical energy storage element used to provide the necessary electrical energy to the blower assembly 15. When the blower assembly 15 is running, external air, after being adsorbed and purified by the filter 12, can enter the mounting cylinder 11. The blower assembly 15 then... The air inside the mounting cylinder 11 is accelerated and enters the interior of the connecting shell 17 through the through slot 16. The guide shell 18 is an arc-shaped shell, which guides the airflow. The air is then directed by the guide plate 19, which is inclined inside the guide shell 18. The accelerated air is blown towards the sensor 10 through the guide plate 19, continuously cleaning the detection end of the sensor 10 and preventing impurities from adhering to the detection end of the sensor 10 and causing obstruction. This effectively improves the accuracy of the measurement. The sensor 10 is a potentiometer-type sensor, which is mainly used to convert the mechanical linear displacement or angular displacement input into a resistance or voltage output that has a certain functional relationship with it. It is used to measure various parameters such as pressure, altitude, acceleration, and flight surface angle.
[0027] Example 2:
[0028] refer to Figures 1-5 As shown, a hanging ring 2 is connected to the top of the scale body 1, a telescopic component 4 is fixedly and movably connected to one side of the wellbore leg 3, and the telescopic component 4 is fixedly and movably connected to the scale body 1. A roller 5 is fixedly and movably connected to the other end of the wellbore leg 3, and a rubber pad 6 is wrapped around the outside of the roller 5. A collection shell 7 is connected to the bottom of the wellbore leg 3, an observation port 8 is connected through one side of the collection shell 7, and a discharge port 9 is connected through the bottom of the collection shell 7.
[0029] Specifically, the scale body 1 can be connected to an external frequency converter winch via the hanging ring 2. The caliper leg 3 is installed on the outside of the scale body 1 via a fixed-point movable connection, and then connected to the caliper leg 3 via a telescopic assembly 4. The other end of the telescopic assembly 4 is also connected to the outside of the scale body 1 via a fixed-point movable connection. When the caliper leg 3 contacts the inner wall of the wellbore, the telescopic assembly 4 can expand or contract according to the change in the wellbore diameter. The movement of the caliper leg 3 is measured by the sensor 10, and the change in the inner diameter of the wellbore can be recorded. The roller 5 is used for positioning... The point of contact is connected to one end of the borehole leg 3 and is wrapped around the outside of the roller 5 by a rubber pad 6. The rubber pad 6 can rotate when it comes into contact with the inner wall of the borehole, which can protect one end of the borehole leg 3. During the rotation of the rubber pad 6, some of the borehole impurities carried on the surface can fall into the inside of the collection shell 7. The collection shell 7 stores the impurities inside the borehole. The layering of the impurities collected inside the collection shell 7 can be observed through the observation port 8. The impurities collected inside the collection shell 7 can be released through the discharge port 9, thereby achieving the sampling effect.
[0030] Working principle: First, when the scale body 1 slides from bottom to top inside the wellbore, it is wrapped around the outside of the roller 5 by the rubber pad 6. The rubber pad 6 can rotate when it comes into contact with the inner wall of the wellbore, which can protect one end of the wellbore leg 3. During the rotation of the rubber pad 6, some of the wellbore impurities carried on the surface can fall into the inside of the collection shell 7. The collection shell 7 stores the impurities inside the wellbore. The layering of the impurities collected inside the collection shell 7 can be observed through the observation port 8. The impurities collected inside the collection shell 7 can be released through the discharge port 9, thereby achieving the sampling effect.
[0031] Secondly, when the caliper leg 3 contacts the inner wall of the wellbore, the telescopic component 4 can scale according to the change in the wellbore diameter. The sensor 10 measures the movement of the caliper leg 3 and records the change in the inner diameter of the wellbore.
[0032] Finally, when the blowing assembly 15 is running, the external air, after being adsorbed and purified by the filter 12, can enter the interior of the mounting cylinder 11. The blowing assembly 15 accelerates the air entering the mounting cylinder 11, and it enters the interior of the connecting shell 17 through the through slot 16. The airflow is guided by the guide shell 18, and then the air is inclinedly set inside the guide shell 18. The accelerated air can be blown towards the sensor 10 through the air guide plate 19, continuously blowing and cleaning the detection end of the sensor 10, preventing impurities from adsorbing on the detection end of the sensor 10 and causing obstruction, thus effectively improving the accuracy of the measurement.
[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A fully sealed acoustic scale for small wellbore, characterized in that, include: The scale body (1), the caliper legs (3) and the mounting cylinder (11) are symmetrically and movably connected to the outside of the scale body (1), and four sets of caliper legs (3) are symmetrically arranged. The mounting cylinder (11) is located inside the scale body (1). The air blowing assembly (15) is arranged inside the mounting cylinder (11). Four sets of through slots (16) are symmetrically opened inside the mounting cylinder (11). Four sets of connecting shells (17) are symmetrically connected to the outside of the mounting cylinder (11), and the connecting shells (17) are located on one side of the through slots (16). A guide shell (18) is connected through the top of the connecting shell (17), and the guide shell (18) is an arc shell. Multiple sets of air guide plates (19) are symmetrically arranged on the inner wall of the guide shell (18), and the air guide plates (19) are inclined.
2. The fully sealed small-bore acoustic scale according to claim 1, characterized in that: The top of the scale body (1) is connected to a hanging ring (2).
3. The fully sealed small-bore acoustic scale according to claim 1, characterized in that: The inside of the scale body (1) is provided with a sensor (10), and four sets of sensors (10) are symmetrically arranged, and the sensors (10) are located diagonally above the guide shell (18).
4. The fully sealed small-bore acoustic scale according to claim 1, characterized in that: One side of the wellbore leg (3) is fixedly and movably connected to a telescopic component (4), and the telescopic component (4) is fixedly and movably connected to the scale body (1).
5. A fully sealed small-bore acoustic scale according to claim 4, characterized in that: The other end of the wellbore leg (3) is internally fixedly connected to a roller (5), and the outside of the roller (5) is wrapped with a rubber pad (6).
6. The fully sealed small-bore acoustic scale according to claim 4, characterized in that: The bottom of the wellbore leg (3) is connected to a collection shell (7), an observation port (8) is connected through one side of the collection shell (7), and a discharge port (9) is connected through the bottom of the collection shell (7).
7. The fully sealed small-bore acoustic scale according to claim 1, characterized in that: The mounting cylinder (11) has multiple sets of filter screens (12) symmetrically connected inside, and four sets of filter screens (12) are symmetrically arranged.
8. A fully sealed small-bore acoustic scale according to claim 7, characterized in that: A battery (13) is connected to the top inner wall of the mounting cylinder (11), and a support mesh plate (14) is connected to the inner wall of the mounting cylinder (11), with the top of the support mesh plate (14) connected to the bottom of the blower assembly (15).