CCL and GR signal gain program control adjusting module

Abstract

A CCL and GR signal gain program control adjusting module is characterized by comprising a front baffle plate, a 3P input socket, a signal processor, a module PCB, a 5P output socket, a rear baffle plate, a module housing, an interface socket, a switching circuit module, an isolation inductor, an LED indicating lamp and a 2P power socket. The module PCB is provided with a 3P input socket, a signal processor, a 5P output socket, an interface socket, a switching circuit module, an isolation inductor, an LED indicating lamp and a 2P power socket, the module PCB is arranged in the module shell, and the two ends of the module PCB are inserted into guide grooves formed in the module shell respectively. According to the utility model, parameters of a filter circuit and a coupling circuit can be adaptively adjusted according to the amplitude, frequency and other characteristics of a CCL signal and a GR signal so as to achieve the best signal processing effect, and the gear does not need to be manually adjusted, so that the operation is simple and convenient, and the cost is low. And the operation is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of oil well logging technology, and in particular to a CCL and GR signal gain programmable adjustment module. Background Technology

[0002] Well logging technology is a downhole oil and gas exploration method, a crucial means of accurately discovering and describing oil and gas reservoirs, and an indispensable scientific basis for assessing oil and gas reserves and production. Well logging technology is an important component of petroleum science and technology, and one of the most technologically advanced disciplines in the oil and gas industry. A typical well logging system consists of a cable car, surface logging instruments, and downhole measuring instruments. The surface instruments communicate and transmit power to the downhole measuring instruments via a logging cable. CCL signals are primarily used to identify downhole casing couplings, determining the instrument depth based on the number of couplings. GR signals are mainly used to identify geological elements of the formation and distinguish various rock types. By comparing the characteristic values ​​of formation GR signals, operators can accurately determine the depth and location of various equipment within the well.

[0003] CCL (Cornering Collision Line) signal is an electrical signal generated when a logging instrument encounters a coupling downhole. During perforation operations, logging personnel use the CCL signal fed back from downhole, combined with depth signals, to determine the specific location of the perforation. Inaccuracies in the CCL signal can lead to false perforations, a very serious consequence. Therefore, clear and accurate CCL signals are crucial in logging operations. GR (Gamma Ray) signal refers to the process of obtaining geological information by detecting gamma rays naturally emitted from subsurface strata or gamma rays excited by artificial sources. Different types of rocks contain different concentrations of radioactive elements, resulting in varying intensities of gamma rays they emit. Precise analysis of these gamma ray intensity variations allows for effective differentiation of various rock types. In logging operations, gamma signals provide a non-invasive method for obtaining subsurface geological information, which is essential for understanding subsurface structures, guiding drilling operations, and resource assessment.

[0004] However, due to the varying conditions in each well, CCL and GR signals with different amplitudes and frequencies are generated. This necessitates adjusting the isolation module's gain settings to accommodate these diverse signals and achieve effective isolation and filtering. While conventional isolation modules offer adjustable gain settings, their internal enclosure makes real-time adjustment difficult, and the numerous settings require individual testing, hindering logging operations and making the adjustment process extremely inconvenient. Therefore, a programmable gain control module for CCL and GR signals is designed to address this problem. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a programmable gain adjustment module for CCL and GR signals. This module can adaptively adjust the parameters of the filtering and coupling circuits based on the amplitude, frequency, and other characteristics of the CCL and GR signals to achieve the best signal processing effect. Furthermore, it eliminates the need for manual adjustment of the gear settings, making operation more convenient.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A CCL and GR signal gain programmable adjustment module is characterized by comprising a front baffle, a 3P input socket, a signal processor, a module PCB, a 5P output socket, a rear baffle, a module housing, an interface socket, a switching circuit module, an isolation inductor, an LED indicator, and a 2P power socket. The 3P input socket, signal processor, 5P output socket, interface socket, switching circuit module, isolation inductor, LED indicator, and 2P power socket are mounted on the module PCB. The module PCB is disposed inside the module housing, and both ends of the module PCB are respectively inserted into guide grooves provided inside the module housing. The front baffle and rear baffle are respectively fixed to the front and rear ends of the module housing with multiple countersunk screws.

[0008] Preferably, the interface socket is equipped with an RS232 interface and an RS485 interface. The addition of these two interfaces not only allows users to monitor the working status of the module in real time, but also supports sending control commands to the module through these interfaces, thereby realizing flexible adjustment of the module's settings.

[0009] Furthermore, the front and rear baffles are made of aluminum alloy plates and are bent at 90 degrees. The front baffle has openings for a 3P input socket, a 2P power socket, and an LED indicator, while the rear baffle has openings for a 5P output socket and an interface socket. Each opening has a corresponding text label, which may be printed using, but is not limited to, screen printing or laser engraving.

[0010] Furthermore, the front and rear baffles are provided with straight grooves for mounting, which are used to install and fix the module.

[0011] Furthermore, the module housing is integrally formed by extruding aluminum profiles, and longitudinal protrusions are arranged at intervals on the outer surface of the module housing for heat dissipation. The module housing has guide grooves inside for guiding the module PCB installation, and four threaded holes are machined at each end of the module housing for installing and fixing the front and rear baffles to the module housing.

[0012] Furthermore, the module PCB can automatically process CCL and GR signals according to the internal embedded program, or it can respond to external commands through an interface socket with 232 / 485 interface to complete signal gain adjustment configuration.

[0013] The beneficial effects of this utility model are:

[0014] This utility model's modular PCB design employs a dual-channel communication interface socket, compatible with both RS232 and RS485 communication protocols. It can preprocess CCL and GR signals according to commands from the main control board. By performing high-level filtering and isolation on the CCL and GR signals, the purity and measurement accuracy of the signals are significantly improved. The processed signals are displayed in an intuitive and clear graph format, greatly facilitating analysis and interpretation by technicians. This not only reduces interference from environmental and other factors, ensuring the accuracy of measurement results, but also provides solid and reliable data support for subsequent well logging tasks. Attached Figure Description

[0015] Figure 1 This is an exploded view of a CCL and GR signal gain programmable adjustment module according to the present invention;

[0016] Figure 2 This is a schematic diagram of the spliced ​​CCL and GR signal gain programmable adjustment module according to the present invention;

[0017] Figure 3 This is a partial structural diagram of the front baffle of a CCL and GR signal gain programmable adjustment module according to the present invention;

[0018] Figure 4 This is a partial structural diagram of the rear baffle of a CCL and GR signal gain programmable adjustment module according to the present invention;

[0019] Figure 5 This is a schematic diagram of the module housing structure of a CCL and GR signal gain programmable adjustment module according to the present invention;

[0020] Figure 6 This is a schematic diagram of the PCB assembly of a CCL and GR signal gain programmable adjustment module according to this utility model after soldering.

[0021] Figure 7 This is a schematic block diagram of a CCL and GR signal gain programmable adjustment module according to the present invention;

[0022] As shown in the figure: 1. Countersunk screw, 2. Front baffle, 3. 3P input socket, 4. Signal processor, 5. Module PCB, 6. 5P output socket, 7. Rear baffle, 8. Module housing, 81. Longitudinal protrusion, 82. Guide groove, 9. Interface socket, 10. Switching circuit module, 11. Isolation inductor, 12. LED indicator, 13. 2P power socket, 27. Opening, 72. Straight slot. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] Example 1

[0027] like Figure 6 As shown, check whether the module PCB (5) is intact. According to the circuit board soldering process, solder the 3P input socket 3, signal processor 4, 5P output socket, interface socket 9 containing both RS232 and RS485 interfaces, switching circuit module 10, isolation inductor 11, LED indicator 12 and 2P power socket 13 onto the module PCB (5), and clean the surface solder paste for later use.

[0028] like Figure 2Insert the soldered electronic components of the module PCB (5) into the module housing 8, and complete the insertion along the guide groove 81 in the module housing 8. Apply Loctite 232 threadlocker to the threaded holes at both ends of the module housing 8, and then use eight countersunk screws 1 to tighten the front baffle 2 and the rear baffle 7 to both ends of the module housing 8, thus completing the assembly and fixing of the module. Afterwards, shake the assembled module to determine whether the installation is tight, and ensure that the internal module PCB (5) is not loose.

[0029] The module housing 8 is integrally formed by extruding aluminum profiles. The outer surface of the module housing 8 is provided with longitudinal protrusions 92 arranged at intervals, which increases the area of ​​the outer surface of the module housing 8 in contact with the air, thereby helping the module to dissipate heat.

[0030] Furthermore, the front baffle 2 and the rear baffle 7 are provided with straight grooves 72 for mounting and fixing the module.

[0031] Example 2

[0032] Before using this utility model, a multimeter is required to test the insulation resistance between the pins of the module and the module housing 8 to ensure that the insulation resistance of all pins except the grounding pin exceeds 500M ohms. The connectors whose insulation values ​​need to be tested include the 2P power socket 13, the 3P input socket 3, the 5P output socket 6, and the interface socket 9.

[0033] After completing the above steps, before powering on for testing, you need to prepare a power strip with built-in overload protection to prevent accidental short circuits from causing power outages to other devices. After confirming that all safety checks are correct, connect the power supply to the module, connect the power supply to the 2P power socket in the module, and use a multimeter to test whether the voltage of this utility model is within the design range.

[0034] After verifying that the module voltage is normal, connect either an RS-232 or RS-485 interface to the nine interface sockets on the module (which have two types of interfaces) to test the communication between the module and the host computer. During this process, closely observe the working status of LED indicator 12 to ensure that it is working normally as expected.

[0035] Once communication is normal, send commands to the module via the host computer software to check whether the module can correctly receive these commands. At the same time, pay attention to whether LED indicator 12 can flash correctly in response to the received commands.

[0036] After the initial testing was completed, the CCL and GR signals were tested by connecting the 3P input socket 3, 5P output socket 6, 2P power socket 13 and interface socket 9 according to the interface definition in the module.

[0037] During the adjustment process, the CCL and GR signals are connected to the gain programmable adjustment module designed in this utility model through the 3P input socket 3. The gain programmable adjustment module is connected to the controller in the measuring instrument. The aforementioned signals are processed by pre-RC filtering and then enter the controller. The controller determines the target gain based on the signal amplitude, automatically matches the appropriate coupling amplifier circuit, ensures that the output signal amplitude is within a reasonable range, and feeds back the adjustment result to the controller.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The various components mentioned in this utility model are common technologies in the existing field. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A CCL and GR signal gain programmable adjustment module, characterized in that The module comprises a front baffle, a 3P input socket, a signal processor, a module PCB, a 5P output socket, a rear baffle, a module shell, an interface socket, a switching circuit module, an isolation inductor, an LED indicator lamp and a 2P power socket, the 3P input socket, the signal processor, the 5P output socket, the interface socket, the switching circuit module, the isolation inductor, the LED indicator lamp and the 2P power socket are mounted on the module PCB, the module PCB is arranged inside the module shell, the two ends of the module PCB are respectively inserted into guide grooves arranged inside the module shell, and the front baffle and the rear baffle are respectively fixed at the front end and the rear end of the module shell by a plurality of countersunk screws.

2. The CCL and GR signal gain programmable adjusting module according to claim 1, characterized in that The interface socket is provided with an RS232 interface and an RS485 interface.

3. The CCL and GR signal gain programmable adjusting module according to claim 1, characterized in that The front baffle and the rear baffle are made of aluminum alloy plates and are bent by 90 degrees, the front baffle is provided with openings for the 3P input socket, the 2P power socket and the LED indicator lamp, and the rear baffle is provided with openings for the 5P output socket and the interface socket.

4. The CCL and GR signal gain programmable adjusting module according to claim 1, characterized in that Straight grooves for mounting are arranged on the front baffle and the rear baffle.

5. The CCL and GR signal gain programmable adjusting module according to claim 1, characterized in that The module shell is integrally formed by extrusion of aluminum profile, longitudinal protrusions are arranged on the outer surface of the module shell at intervals, guide grooves are arranged inside the module shell, and threaded holes are formed at the two ends of the module shell.

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