Well logging device for oil exploitation

Abstract

The utility model provides a logging device for oil exploitation, which relates to the technical field of oil exploitation and comprises a protective cover, a telescopic column is rotatably connected inside the protective cover through a bearing, and the top of the telescopic column is coaxially and fixedly connected to the output end of a motor. According to the utility model, on one hand, the plurality of sensors are arranged in the detection rod to form a matching structure, and the detection groove is formed in the periphery of the detection rod, so that the sensors can conveniently detect the surrounding environment when descending into a well, and information data in the well can be timely transmitted to people outside the well; meanwhile, due to the structure of the multiple sensors, the situation that the device is affected by factors such as underground environment and tool damage, and consequently data transmission is unstable is avoided; and on the other hand, in the mining process, the service life of the logging tool is greatly prolonged, the stability of the logging tool is greatly reduced due to the underground severe environment such as high temperature, high pressure and corrosive gas, and therefore the abrasion resistance and the corrosion resistance of the surface of the tool are improved due to the fact that the anti-corrosion coating is arranged on the periphery of the device.

Description

Technical Field

[0001] This utility model relates to the field of oil extraction technology, and in particular to an oil extraction logging device. Background Technology

[0002] Oilfield logging equipment is a crucial tool for detecting the characteristics of oil and gas reservoirs and underground geological conditions, widely used in oil exploration and development. Its main function is to acquire information such as the physical properties, porosity, permeability, and hydrocarbon content of underground rock formations through wellbore sensors, instrument probes, and other equipment, helping geological engineers accurately assess the reserves and exploitation potential of oil and gas reservoirs. Common logging types include resistivity logging, gamma-ray logging, and sonic logging. Resistivity logging analyzes the water content and hydrocarbon distribution of reservoirs by measuring changes in the resistivity of underground rock formations; gamma-ray logging can determine the radioactive characteristics of formations, revealing different lithologies. Logging tools are typically lowered into the well via wire ropes or cables to collect data in real time and transmit it to the surface, ensuring the scientific accuracy of exploitation decisions.

[0003] Existing oil well logging equipment typically uses sensors with limited functionality, failing to comprehensively and accurately acquire multiple formation parameters such as porosity, fractures, and lithology. This limits the measurement of specific physical quantities and provides only one aspect of formation information, restricting subsequent data processing. This invention addresses this by adding multiple different sensors within the device. These sensors measure different characteristics of the same formation, and combining this data allows for cross-validation, reducing measurement errors potentially introduced by a single sensor. Furthermore, a coating is applied to the device's surface, utilizing corrosion-resistant coatings (such as titanium nitride or ceramic coatings) to improve wear and corrosion resistance, enhancing durability and extending the device's lifespan.

[0004] Therefore, we propose a logging device for oil exploration. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies. Current oil well logging equipment typically uses single-function sensors that can only measure specific physical quantities and cannot comprehensively and accurately acquire multiple formation parameters, such as porosity, fractures, and lithology. Therefore, they only provide limited formation information, leading to limitations in subsequent data processing. This invention reduces measurement errors that may arise from a single sensor by adding multiple different types of sensors within the device. These sensors measure different characteristics of the same formation, and the data is cross-validated. Simultaneously, the device surface is coated with an anti-corrosion coating, improving the wear resistance and corrosion resistance of the tool surface, enhancing the device's durability, and extending its service life.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A logging device for oil exploration includes a protective cover. Inside the protective cover, a telescopic column is rotatably connected via a bearing. The top of the telescopic column is coaxially fixedly connected to the output end of a motor. The bottom of the telescopic column is coaxially fixedly connected to a detection rod. A first fixed seat and a second fixed seat are fixedly installed at both ends inside the detection rod.

[0008] The first fixing base has multiple holes inside, and a screw is rotatably connected to each hole via bearings. The bottom of the screw is rotatably connected to the second fixing base via bearings. Threaded blocks are threaded to the outer circumference of the screw. A second sensor, a third sensor, and a fourth sensor are respectively fixedly installed on the side of the multiple threaded blocks near the inner wall of the detection rod. Detection grooves are formed on the outer circumference of the detection rod, and the detection grooves correspond to the second sensor, the third sensor, and the fourth sensor, respectively. Limiting rods are provided on both sides of the multiple threaded blocks. The top of the limiting rod is fixedly connected to the bottom of the first fixing base, and the bottom of the limiting rod is fixedly connected to the top of the second fixing base.

[0009] Preferably, the end of the detection rod away from the telescopic column is coaxially fixedly connected to a first fixing ring, and the two ends of the first fixing ring are rotatably connected to a first drill bit and a second drill bit, which are coupled together.

[0010] Preferably, a connecting rod is fixedly connected to the top of the detection rod, and a first sensor is fixedly connected to the end of the connecting rod away from the detection rod.

[0011] Preferably, a second fixing ring is fixedly sleeved on the outer periphery of the protective cover, and telescopic rods are fixedly installed on both sides of the second fixing ring.

[0012] Preferably, a fixing block is fixedly installed at the end of the telescopic rod away from the second fixing ring.

[0013] Preferably, the top of the screw is coaxially fixedly connected to the output end of the micro motor.

[0014] Preferably, the outer periphery of the detection rod, the first fixing ring, and the first drill bit are all provided with an anti-corrosion coating.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] In this invention, on the one hand, by setting up a combined structure of multiple sensors inside the detection rod and opening detection grooves on the outer periphery of the detection rod, the sensors can detect the surrounding environment when the device is lowered into the well, and transmit the information data inside the well to the personnel outside the well in a timely manner. At the same time, the structure of multiple sensors avoids the device from being affected by factors such as the underground environment and tool damage, which could lead to unstable data transmission. On the other hand, the harsh underground environment during the mining process, such as high temperature, high pressure, corrosive gases or liquids, can greatly reduce the service life and stability of logging tools. Therefore, an anti-corrosion coating (such as titanium nitride coating, ceramic coating, etc.) is set on the outer periphery of the device to improve the wear resistance and corrosion resistance of the tool surface. Attached Figure Description

[0017] Figure 1 This utility model provides an overall structural schematic diagram of a logging device for oil exploration.

[0018] Figure 2 A cross-sectional view of the overall structure of a logging device for oil exploration provided by this utility model;

[0019] Figure 3 A split diagram of the logging structure of a logging device for oil exploration provided by this utility model;

[0020] Figure 4 This utility model provides an overall schematic diagram of a logging sensor for an oilfield logging device.

[0021] Legend: 1. Protective cover; 2. Telescopic column; 3. Detection rod; 4. Connecting rod; 5. First fixing ring; 6. First drill bit; 7. Second drill bit; 8. First sensor; 9. First fixing seat; 10. Second fixing seat; 11. Screw; 12. Threaded block; 13. Second sensor; 14. Third sensor; 15. Fourth sensor; 16. Limiting rod; 17. Second fixing ring; 18. Telescopic rod; 19. Fixing block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] Example 1

[0027] like Figure 1-4 As shown, this utility model provides a technical solution: a logging device for oil exploration, including a protective cover 1. The protective cover 1 provides protection for the internal mechanical components to avoid damage to the equipment caused by external environmental factors. A telescopic column 2 is rotatably connected inside the protective cover 1 through a bearing. The top of the telescopic column 2 is coaxially fixedly connected to the output end of a motor. The telescopic column 2 is connected to the motor and the detection rod 3. The telescopic column 2 is connected to the detection rod 3 to adjust the working height of the equipment. Driven by the motor, the telescopic column 2 can control the detection rod 3 to probe and monitor deeper into the well. The bottom of the telescopic column 2 is coaxially fixedly connected to the detection rod 3. The detection rod 3 has a first fixed seat 9 and a second fixed seat 10 fixedly installed at both ends inside.

[0028] The first fixed base 9 has multiple holes inside, and a screw 11 is rotatably connected to the holes through bearings to ensure that the screw 11 can rotate stably and smoothly. The bottom of the screw 11 is rotatably connected to the second fixed base 10 through bearings. A threaded block 12 is threadedly connected to the outer circumference of the screw 11. A second sensor 13, a third sensor 14, and a fourth sensor 15 are respectively fixedly installed on the side of the multiple threaded blocks 12 near the inner wall of the detection rod 3. A detection groove is formed on the outer circumference of the detection rod 3. The outer circumference of the detection groove is provided with high-strength glass with good corrosion resistance, such as fluorinated glass. This glass has extremely strong corrosion resistance and impact resistance, which can prevent harmful chemicals in the environment from damaging the sensor or other electronic components. The detection groove corresponds to the second sensor 13, the third sensor 14, and the fourth sensor 15 respectively. Different sensors are responsible for different types of data acquisition, which can achieve accurate measurement and monitoring. Limit rods 16 are provided on both sides of the multiple threaded blocks 12 to ensure that the two ends of the threaded blocks 12 can move within a specified range. Its function is to prevent the threaded block 12 from moving excessively, which could lead to interference or damage between mechanical parts. The top of the limiting rod 16 is fixedly connected to the bottom of the first fixed seat 9, and the bottom of the limiting rod 16 is fixedly connected to the top of the second fixed seat 10.

[0029] Example 2

[0030] The end of the detection rod 3 away from the telescopic column 2 is coaxially fixedly connected to a first fixing ring 5. The two ends of the first fixing ring 5 are rotatably connected to a first drill bit 6 and a second drill bit 7. The first drill bit 6 and the second drill bit 7 are coupled together and work together through mutual coupling. The top of the detection rod 3 is fixedly connected to a connecting rod 4. The end of the connecting rod 4 away from the detection rod 3 is fixedly connected to a first sensor 8, which is used to monitor certain physical quantities during the operation of the drill bit. The outer periphery of the protective cover 1 is fixedly fitted with a second fixing ring 17. Telescopic rods 18 are fixedly installed on both sides of the second fixing ring 17.

[0031] Example 3

[0032] A fixing block 19 is fixedly installed at the end of the telescopic rod 18 away from the second fixing ring 17. The top of the screw 11 is coaxially fixedly connected to the output end of the micro motor. Driven by the micro motor, the screw 11 rotates, thereby driving the movement of other components connected to the screw 11. The outer periphery of the detection rod 3, the first fixing ring 5 and the first drill bit 6 are all provided with anti-corrosion coatings, which enhance the wear resistance and scratch resistance of the component surfaces, enabling the equipment to work more durablely under high load or harsh working environments.

[0033] The working process of this utility model:

[0034] Step one: First, fix the entire device to the wellhead where the detection is to be performed using the fixing block 19. After fixing, drive the telescopic column 2 with a motor. The telescopic column 2 is connected to the detection rod 3 and is used to adjust the working height of the detection rod. Driven by the motor, the telescopic column 2 can move up or down, ensuring that the detection rod 3 can penetrate to different depths in the oil well for detection. At the same time, the first fixing ring 5 is coaxially fixed to the detection rod 3, driving the drill bit, which is rotatably connected to the first fixing ring, to move synchronously. This allows the drill bit to rotate and descend as the detection rod 3 is rotated, enabling it to penetrate hard parts encountered in deep wells, facilitating subsequent detection.

[0035] Step two: The first sensor 8, housed inside the drill bit, monitors the drill bit's physical quantities (such as temperature, pressure, vibration, etc.) to ensure drilling operations are conducted safely and efficiently. Once the device is lowered to a certain depth, multiple threaded blocks 12 within the detection rod 3 monitor the well environment. These threaded blocks are respectively fitted with a second sensor 13, a third sensor 14, and a fourth sensor 15. These sensors are responsible for collecting different types of data, such as pressure, temperature, and formation characteristics, ensuring accurate measurement and monitoring. Detection grooves are provided on the outer periphery of the detection rod 3, corresponding to the second, third, and fourth sensors. The outer periphery of these grooves uses high-strength, corrosion-resistant glass to prevent damage to the sensors from harmful substances in the environment.

[0036] Step 3: Simultaneously, the micro motor is activated to drive the screw 11 to move, which in turn drives the threaded block 12 to move, thereby controlling the sensor to measure the rock strata at different locations and reducing errors in subsequent processes.

[0037] 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 logging device for oil exploration, comprising a protective cover (1), characterized in that: The protective cover (1) is rotatably connected to a telescopic column (2) via a bearing. The top of the telescopic column (2) is coaxially fixedly connected to the output end of the motor. The bottom of the telescopic column (2) is coaxially fixedly connected to a detection rod (3). The detection rod (3) has a first fixed seat (9) and a second fixed seat (10) fixedly installed at both ends inside. The first fixed base (9) has multiple holes inside, and a screw (11) is rotatably connected to the holes through bearings. The bottom of the screw (11) is rotatably connected to the second fixed base (10) through bearings. A threaded block (12) is threadedly connected to the outer circumference of the screw (11). A second sensor (13), a third sensor (14), and a fourth sensor (15) are respectively fixedly installed on the side of the multiple threaded blocks (12) near the inner wall of the detection rod (3). A detection groove is opened on the outer circumference of the detection rod (3). The detection groove corresponds to the second sensor (13), the third sensor (14), and the fourth sensor (15) respectively. Limiting rods (16) are provided on both sides of the multiple threaded blocks (12). The top of the limiting rod (16) is fixedly connected to the bottom of the first fixed base (9), and the bottom of the limiting rod (16) is fixedly connected to the top of the second fixed base (10).

2. The oil well logging device according to claim 1, characterized in that: The detection rod (3) is coaxially fixedly connected to a first fixing ring (5) at one end away from the telescopic column (2). The two ends of the first fixing ring (5) are rotatably connected to a first drill bit (6) and a second drill bit (7), and the first drill bit (6) and the second drill bit (7) are coupled together.

3. The oil well logging device according to claim 2, characterized in that: A connecting rod (4) is fixedly connected to the top of the detection rod (3), and a first sensor (8) is fixedly connected to the end of the connecting rod (4) away from the detection rod (3).

4. The oil well logging device according to claim 1, characterized in that: The outer periphery of the protective cover (1) is fixedly fitted with a second fixing ring (17), and telescopic rods (18) are fixedly installed on both sides of the second fixing ring (17).

5. The oil well logging device according to claim 4, characterized in that: A fixing block (19) is fixedly installed at the end of the telescopic rod (18) away from the second fixing ring (17).

6. The oil well logging device according to claim 1, characterized in that: The top of the screw (11) is coaxially fixedly connected to the output end of the micro motor.

7. The oil well logging device according to claim 2, characterized in that: The outer periphery of the detection rod (3), the first fixing ring (5) and the first drill bit (6) are all provided with an anti-corrosion coating.

Images