Oil and gas well measurement while drilling data time-sharing transmission method and system based on local BLE-mesh

Abstract

The present application relates to the technical field of downhole communication, in particular to a kind of oil and gas well measurement while drilling data time-sharing transmission method and system based on local BLE-Mesh.The method comprises: based on the distribution algorithm of pre-set, the micro-measuring device arranged in well bottom spontaneously constructs first topological network;When downhole intelligent measuring nipple reaches downhole target position, downhole intelligent measuring nipple releases the micro-measuring device carried and joins first topological network, obtains second topological network;In the process of drilling fluid rising, based on second topological network, data acquisition is carried out through downhole intelligent measuring nipple, and downhole measurement data is obtained;Downhole measurement data is transmitted to micro-measuring device and is stored;In ground control center, downhole measurement data is transmitted to host computer through Bluetooth, and downhole measurement data is analyzed and processed, and time-sharing measurement data is obtained.The present application is a kind of real-time monitoring method with high transmission efficiency and strong robustness for downhole environment.

Description

Technical Field

[0001] This invention relates to the field of downhole communication technology, and in particular to a time-division transmission method and system for oil and gas well measurement-while-drilling data based on local BLE-Mesh. Background Technology

[0002] Among existing downhole data transmission technologies, Measurement While Drilling (MWD) data transmission faces numerous challenges. Traditional downhole communication methods, such as mud pulse signaling, primarily transmit data by generating pressure pulses in the drilling mud flow. Downhole equipment periodically alters the mud flow state by controlling the switching of specific systems, thereby generating regular pressure waves in the flowing drilling mud. These pressure waves flow upwards with the mud to the surface, where surface equipment detects these pulses and decodes them into data, achieving information transmission from downhole to the surface. However, this method has a low data transmission rate, typically below 20 bits / s, and cannot reflect downhole conditions in real time, making it difficult to meet the practical needs of modern oil and gas development.

[0003] With the development of Logging While Drilling (LWD) technology, more advanced transmission methods have emerged, such as time-sharing transmission of measurement data (MWD) data. The core of this technology lies in the fact that downhole measurement equipment acquires data, transmits it to a microchip memory, and then transmits the data to the surface in real time through drilling fluid circulation. However, existing LWD time-sharing transmission equipment faces several technical challenges. In particular, microchip memories typically rely on exposed contact interfaces to communicate with downhole smart measurement subs. These interfaces have relatively weak temperature and pressure resistance, making it difficult to establish stable and effective connections in complex downhole conditions, thus limiting communication efficiency and data quality.

[0004] Electromagnetic interference and complex geological structures downhole significantly impact signal transmission efficiency, making it difficult for traditional wireless communication technologies to achieve long-distance transmission in downhole environments. These technical limitations are particularly pronounced in actual drilling operations, severely restricting the effectiveness of traditional communication technologies in the high-pressure, high-temperature downhole environment. Therefore, to optimize drilling efficiency and improve data acquisition quality, the drilling industry urgently needs more reliable and advanced data transmission solutions.

[0005] In the existing technology, there is a lack of a real-time monitoring method with high transmission efficiency and strong robustness for downhole environments. Summary of the Invention

[0006] To address the technical problems of existing technologies, such as insufficient communication efficiency to meet the real-time requirements of downhole monitoring and poor robustness under complex operating conditions, this invention provides a time-division transmission method and system for oil and gas well measurement-while-drilling data based on local BLE-Mesh. The technical solution is as follows:

[0007] On the one hand, a time-division transmission method for oil and gas well measurement-while-drilling data based on local BLE-Mesh is provided. This method is implemented by a time-division transmission device for measurement-while-drilling data, and includes:

[0008] Based on a pre-defined distribution algorithm, the miniature measuring instruments deployed at the bottom of the well spontaneously construct the first topology network;

[0009] When the downhole intelligent measurement sub reaches the target position downhole, the downhole intelligent measurement sub releases the carried miniature measuring device to join the first topology network and obtain the second topology network;

[0010] As the drilling fluid rises, data is acquired through the downhole intelligent measurement sub based on the second topology network to obtain downhole measurement data.

[0011] The downhole measurement data is transmitted to the micro measuring device for storage;

[0012] At the ground control center, the downhole measurement data is transmitted to the host computer via Bluetooth, where it is analyzed and processed to obtain time-sharing measurement data.

[0013] On the other hand, a time-division transmission system for oil and gas well measurement-while-drilling data based on local BLE-Mesh is provided. This system is applied to the time-division transmission method for oil and gas well measurement-while-drilling data based on local BLE-Mesh. The system includes a miniature measuring instrument, a downhole intelligent measuring sub, and electronic equipment, wherein:

[0014] The micro measuring device is used to spontaneously construct a first topology network based on a preset distribution algorithm. When the downhole intelligent measuring sub reaches the target position, the downhole intelligent measuring sub releases the micro measuring device it carries and joins the first topology network to obtain a second topology network.

[0015] The downhole intelligent measurement sub is used to acquire downhole measurement data based on the second topology network during the rise of drilling fluid; and to transmit the downhole measurement data to the micro measuring device for storage.

[0016] The electronic device is used to transmit the downhole measurement data to a host computer via Bluetooth from the ground control center, perform data analysis and processing on the downhole measurement data, and obtain time-sharing measurement data.

[0017] On the other hand, a time-sharing device for measurement while drilling data is provided, the time-sharing device for measurement while drilling data includes: a processor; a memory, the memory storing computer-readable instructions, when the computer-readable instructions are executed by the processor, to implement any of the methods in the above-described method for time-sharing transmission of oil and gas well measurement while drilling data based on local BLE-Mesh.

[0018] On the other hand, a computer-readable storage medium is provided, wherein at least one instruction is stored in the storage medium, the at least one instruction being loaded and executed by a processor to implement any of the above-described methods for time-division transmission of oil and gas well measurement-while-drilling data based on local BLE-Mesh.

[0019] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following:

[0020] This invention proposes a time-division multiplexing method for transmitting measurement-while-drilling (MSW) data in oil and gas wells based on a local BLE-Mesh architecture. Through network communication of multiple micro-measuring devices, stable and reliable communication coverage is achieved in the downhole environment, forming a small closed-loop network at the bottom of the well. This enables stable communication and efficient data transmission for the downhole micro-measuring device network communication system. Self-organizing network configuration and adaptive frequency adjustment ensure signal transmission stability and coverage. The low-power design of this invention reduces maintenance costs and operational complexity. The signal relay function of the micro-measuring devices extends the communication coverage. This invention provides a highly efficient and robust real-time monitoring method for downhole environments. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a flowchart of a method for time-division transmission of oil and gas well measurement data while drilling based on local BLE-Mesh, provided by an embodiment of the present invention.

[0023] Figure 2 This is a block diagram of a time-division transmission system for oil and gas well measurement while drilling based on local BLE-Mesh, provided by an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of a time-sharing transmission device for drilling measurement data provided in an embodiment of the present invention. Detailed Implementation

[0025] The technical solution of the present invention will now be described with reference to the accompanying drawings.

[0026] In embodiments of the present invention, words such as "exemplarily," "for example," etc., are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" in the present invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present the concept in a concrete manner. Furthermore, in embodiments of the present invention, the meaning expressed by "and / or" can be both, or either one.

[0027] In the embodiments of this invention, the terms "image" and "picture" may sometimes be used interchangeably. It should be noted that, without emphasizing the distinction between them, they convey the same meaning. Similarly, the terms "of," "corresponding (relevant)," and "corresponding" may sometimes be used interchangeably. It should be noted that, without emphasizing the distinction between them, they convey the same meaning.

[0028] In this embodiment of the invention, sometimes a subscript such as W1 may be written in a non-subscript form such as W1. When the difference is not emphasized, the meaning they express is the same.

[0029] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0030] This invention provides a time-division multiplexing method for oil and gas well measurement-while-drilling (MWD) data transmission based on local BLE-Mesh. This method can be implemented using a time-division multiplexing device for MWD data transmission, which can be a terminal or a server. Figure 1 The flowchart shown is for a time-division transmission method of measurement-while-drilling data for oil and gas wells based on local BLE-Mesh. The processing flow of this method may include the following steps:

[0031] S1. Based on a preset distribution algorithm, the miniature measuring instruments deployed at the bottom of the well spontaneously construct the first topology network.

[0032] In one feasible implementation, this invention addresses the challenges of downhole data transmission by introducing Bluetooth Low Energy (BLE) technology into time-division multiplexing of measurement data transmission while drilling. BLE technology, characterized by its low power consumption, high reliability, and flexible deployment capabilities, is well-suited to meeting the localized communication needs of complex downhole environments. It can automatically configure and maintain the network according to actual needs, enabling real-time data storage without physical contact.

[0033] As the intelligent downhole measurement sub extends deeper into the well, a micro measuring device establishes a connection with it and wirelessly stores its data. At the same time, the micro measuring devices can store data with each other, establishing an efficient data transmission network, which greatly enhances the real-time data transmission and processing capabilities.

[0034] Optionally, based on a preset distribution algorithm, the miniature measuring instruments deployed at the bottom of the well spontaneously construct a first topology network, including:

[0035] Using BLE-Mesh technology, a miniature measuring instrument scans the communication signal to obtain the signal scanning results;

[0036] Signal strength is assessed based on the signal scanning results to obtain the connection quality of adjacent devices.

[0037] Based on the connection quality of adjacent devices and the preset distribution algorithm, the micro measuring devices establish communication connections with each other using the current optimal strategy to obtain the first topology network.

[0038] In one feasible implementation, BLE-MESH networking is used to ensure that each storage mode measurement device can establish connections with multiple adjacent storage mode measurement devices, forming a redundant network topology.

[0039] Each miniature measuring device is equipped with wireless signal transmission and reception capabilities and can self-organize network configuration to adapt to complex downhole environments. The measuring device can automatically adjust its communication frequency and channel according to changes in downhole operating conditions to ensure signal transmission stability. The self-organizing network configuration includes node discovery, routing selection, and link maintenance.

[0040] The storage mode micrometer is configured through a self-organizing network to ensure that each storage mode micrometer can establish connections with multiple adjacent storage mode micrometers, forming a first topology network.

[0041] Before deploying miniature measuring instruments at the bottom of the well, it is necessary to determine the network coverage area and the optimal sensor layout and density based on the required coverage area. The minimum and maximum number of adjacent sensors that each measuring instrument's sensor should connect to must also be determined to ensure network robustness and redundancy. After deploying the sensors at the predetermined locations, the initial network parameters for the sensors, such as channel selection and power settings, must be configured.

[0042] Each storage-mode miniature measuring device automatically enters scanning mode upon deployment, searching for other measuring devices in the vicinity. Based on received signal strength indications, it assesses the connection quality with neighboring devices. According to signal strength and a preset distribution algorithm, it automatically selects the best neighboring measuring device to establish a connection.

[0043] The micro measuring device has two operating modes: storage mode and measurement mode.

[0044] Storage mode is the operating mode of the miniature measuring instrument used to receive measurement data;

[0045] Measurement mode is the operating mode of a miniature measuring instrument used to extend communication coverage;

[0046] The micro measuring instrument in storage mode will switch to the measuring mode when the amount of stored data reaches a preset amount.

[0047] In one feasible implementation, the control unit of each micrometer of the present invention includes a microprocessor and an radio frequency module for implementing self-organizing network and frequency adjustment functions; and an adaptive frequency adjustment mechanism for automatically adjusting the communication frequency according to changes in the downhole environment.

[0048] The miniature measuring device is responsible for receiving data measured by the downhole intelligent measuring sub and communicating with other storage mode miniature measuring devices. When the amount of data stored in the storage mode miniature measuring device reaches the preset amount, it switches to the measurement mode miniature measuring device. The measurement mode miniature measuring device is used to expand the communication coverage, transmit data to the ground in a chain, and has the function of measuring parameters such as temperature, pressure, and its own rotational acceleration in real time along the way.

[0049] The miniature measuring device has two operating modes. The first mode is storage mode: the miniature measuring device collects data measured by the downhole intelligent measuring sub and communicates and exchanges data with other storage mode measuring devices. The second mode is measurement mode: after deployment, it expands the communication coverage and collects data such as temperature and pressure during the ascent process, as well as its own rotational acceleration. The storage mode measuring device receives data from nearby measuring devices. When the data volume reaches the required level, the storage mode measuring device switches to measurement mode.

[0050] The miniature measuring devices employ a high-efficiency silver oxide power supply system. Each miniature measuring device can operate for extended periods in low-power mode. The power supply system features high-efficiency energy conversion and long lifespan, reducing maintenance costs and operational complexity. Each miniature measuring device is equipped with a Bluetooth module, which, after initialization, configures services such as ADC analog-to-digital converter, timer, Bluetooth broadcast, and scanning.

[0051] S2. When the downhole intelligent measurement sub reaches the target position downhole, the downhole intelligent measurement sub releases the carried miniature measuring device to join the first topology network and obtain the second topology network.

[0052] In one feasible implementation, once the measuring tool reaches the designated location, a second topology network is established with the storage pattern measuring device to transmit the real-time collected downhole environmental data to the storage pattern measuring device.

[0053] The self-organizing capability of the downhole micro measuring device network communication system includes dynamically adjusting the network topology based on factors such as signal strength and distance between micro measuring devices in the storage mode, thereby improving communication efficiency and reliability.

[0054] Optionally, when the downhole intelligent measurement sub reaches the target position downhole, the downhole intelligent measurement sub releases its carried miniature measuring device to join the first topology network, thus obtaining a second topology network, including:

[0055] The miniature measuring device released from the downhole intelligent measuring sub is added to the first topology network to obtain the second topology network to be adjusted.

[0056] The micro-measuring device of the second topology network to be adjusted calculates the network performance of the micro-measuring device under the current environment and obtains network performance data.

[0057] Based on network performance data and preset communication distance, data analysis is performed to obtain the device network role of the miniature measuring device;

[0058] Based on the network role of the device, the second topology network to be adjusted is dynamically adjusted to obtain the second topology network.

[0059] In one feasible implementation, each storage mode measuring device in the second topology network to be adjusted automatically starts scanning mode to detect signals from other storage mode measuring devices in the vicinity, and automatically adjusts its network role and connection strategy based on real-time data.

[0060] During signal testing and adjustment, the storage-mode miniature measuring instrument monitors the signal strength and quality of neighboring nodes in real time, automatically increasing transmission power or changing transmission frequency to ensure communication quality. It continuously collects network performance data, such as signal strength, data latency, and packet loss rate.

[0061] Among them, the network roles of devices include router roles and terminal device roles;

[0062] The router role refers to a miniature measuring device used for relaying communication signals; communication signal relay employs multi-hop transmission technology;

[0063] The role of a terminal device refers to a miniature measuring device used for signal acquisition.

[0064] The signal relay function employs multi-hop transmission technology to improve communication coverage.

[0065] In one feasible implementation, the role of the sensor, such as a router role or a terminal device role, is dynamically adjusted based on network performance data, the sensor's geographical location, and a preset communication distance.

[0066] S3. During the ascent of the drilling fluid, data is acquired through the downhole intelligent measurement sub based on the second topology network to obtain downhole measurement data.

[0067] In one feasible implementation, the downhole smart measurement sub is used for downhole multi-parameter measurement, sends measurement data to the stored mode measurement device, and is responsible for releasing the measurement mode measurement device.

[0068] Optionally, during the ascent of the drilling fluid, data is acquired via a downhole intelligent measurement sub based on the second topology network to obtain downhole measurement data, including:

[0069] The second topology network and the downhole intelligent measurement sub establish communication;

[0070] The current environment is measured using a downhole intelligent measurement sub, and test data is obtained.

[0071] Based on the test data, the communication stability is assessed, and the stability assessment results are obtained.

[0072] When the stability assessment result is stable, data is collected through the downhole intelligent measurement sub. When the data reaches the preset amount, downhole measurement data is obtained.

[0073] In one feasible implementation, the communication quality needs to be evaluated before data acquisition, and a portion of the monitoring data is extracted as test data. If the current communication status is stable, data collection continues under the current status. When the preset amount of data is collected, the collected data is the downhole measurement data.

[0074] Optionally, after determining the communication stability based on the test data and obtaining the stability determination result, the method further includes:

[0075] When the stability assessment result is unstable, the miniature measuring device in the second topology network recalculates the current communication quality.

[0076] The communication frequency of the second topology network is adaptively adjusted based on the current communication quality.

[0077] In one feasible implementation, the adaptive and adjustable information coordination mechanism formed by the storage mode micro measuring device and the downhole intelligent measuring sub of the present invention can adaptively adjust when the signal strength and quality of the storage mode measuring device and the adjacent storage mode measuring device are unstable, and decide to increase the transmission power or change the transmission frequency.

[0078] S4. Transfer the downhole measurement data to the micro measuring device for storage.

[0079] In one feasible implementation, the measurement mode micro measuring device performs data measurement during its ascent. The micro measuring device activates a timer and measures the downhole temperature, pressure, and its own rotational acceleration at regular intervals, collecting downhole environmental data and storing it in the FLASH memory.

[0080] S5. At the ground control center, the downhole measurement data is transmitted to the host computer via Bluetooth. The downhole measurement data is then analyzed and processed to obtain time-sharing measurement data.

[0081] In one feasible implementation, during the ascent of the measuring device, the sensor performs timer sampling at a predetermined frequency to capture rapid changes in environmental conditions and collect data such as temperature, pressure, and its own rotational acceleration in real time. After being retrieved, the data is transmitted to the ground control center via a wireless communication network.

[0082] After the microspheres are retrieved, they are sent to the ground control center. The micro measuring device is then woken up via Bluetooth Low Energy wake-up service, and a host computer connects to the Bluetooth Flash memory to receive and analyze data.

[0083] The performance and health status of all devices can be tracked at the ground control center. When a node failure or performance degradation is detected, the network can be automatically reconfigured and the faulty node replaced or repaired.

[0084] This invention proposes a time-division multiplexing method for transmitting measurement-while-drilling (MSW) data in oil and gas wells based on a local BLE-Mesh architecture. Through network communication of multiple micro-measuring devices, stable and reliable communication coverage is achieved in the downhole environment, forming a small closed-loop network at the bottom of the well. This enables stable communication and efficient data transmission for the downhole micro-measuring device network communication system. Self-organizing network configuration and adaptive frequency adjustment ensure signal transmission stability and coverage. The low-power design of this invention reduces maintenance costs and operational complexity. The signal relay function of the micro-measuring devices extends the communication coverage. This invention provides a highly efficient and robust real-time monitoring method for downhole environments.

[0085] Figure 2 This is a block diagram illustrating a time-division multiplexing system for oil and gas well measurement-while-drilling data based on a local BLE-Mesh, according to an exemplary embodiment. This system is used for a time-division multiplexing method of oil and gas well measurement-while-drilling data based on a local BLE-Mesh. (Refer to...) Figure 2 The system includes a miniature measuring device 210, a downhole intelligent measuring sub 220, and electronic equipment 230, wherein:

[0086] The miniature measuring device 210 is used to spontaneously construct a first topology network based on a preset distribution algorithm. When the downhole intelligent measuring sub reaches the target position, the downhole intelligent measuring sub releases the miniature measuring device it carries and joins the first topology network to obtain a second topology network.

[0087] The downhole intelligent measurement sub 220 is used to acquire downhole measurement data through the downhole intelligent measurement sub based on a second topology network during the ascent of drilling fluid; the downhole measurement data is then transmitted to a micro measuring device for storage.

[0088] Electronic device 230 is used to transmit downhole measurement data to a host computer via Bluetooth from a ground control center, perform data analysis and processing on the downhole measurement data, and obtain time-sharing measurement data.

[0089] The micro measuring device has two operating modes: storage mode and measurement mode.

[0090] Storage mode is the operating mode of the miniature measuring instrument used to receive measurement data;

[0091] Measurement mode is the operating mode of a miniature measuring instrument used to extend communication coverage;

[0092] The micro measuring instrument in storage mode will switch to the measuring mode when the amount of stored data reaches a preset amount.

[0093] Optionally, the miniature measuring instrument 210 is further used for:

[0094] Using BLE-Mesh technology, a miniature measuring instrument scans the communication signal to obtain the signal scanning results;

[0095] Signal strength is assessed based on the signal scanning results to obtain the connection quality of adjacent devices.

[0096] Based on the connection quality of adjacent devices and the preset distribution algorithm, the micro measuring devices establish communication connections with each other using the current optimal strategy to obtain the first topology network.

[0097] Optionally, the miniature measuring instrument 210 is further used for:

[0098] The miniature measuring device released from the downhole intelligent measuring sub is added to the first topology network to obtain the second topology network to be adjusted.

[0099] The micro-measuring device of the second topology network to be adjusted calculates the network performance of the micro-measuring device under the current environment and obtains network performance data.

[0100] Based on network performance data and preset communication distance, data analysis is performed to obtain the device network role of the miniature measuring device;

[0101] Based on the network role of the device, the second topology network to be adjusted is dynamically adjusted to obtain the second topology network.

[0102] Among them, the network roles of devices include router roles and terminal device roles;

[0103] The router role refers to a miniature measuring device used for relaying communication signals; communication signal relay employs multi-hop transmission technology;

[0104] The role of a terminal device refers to a miniature measuring device used for signal acquisition.

[0105] Optionally, the downhole intelligent measurement sub 220 is further used for:

[0106] The second topology network and the downhole intelligent measurement sub establish communication;

[0107] The current environment is measured using a downhole intelligent measurement sub, and test data is obtained.

[0108] Based on the test data, the communication stability is assessed, and the stability assessment results are obtained.

[0109] When the stability assessment result is stable, data is collected through the downhole intelligent measurement sub. When the data reaches the preset amount, downhole measurement data is obtained.

[0110] Optionally, the downhole intelligent measurement sub 220 is further used for:

[0111] When the stability assessment result is unstable, the miniature measuring device in the second topology network recalculates the current communication quality.

[0112] The communication frequency of the second topology network is adaptively adjusted based on the current communication quality.

[0113] This invention proposes a time-division multiplexing method for transmitting measurement-while-drilling (MSW) data in oil and gas wells based on a local BLE-Mesh architecture. Through network communication of multiple micro-measuring devices, stable and reliable communication coverage is achieved in the downhole environment, forming a small closed-loop network at the bottom of the well. This enables stable communication and efficient data transmission for the downhole micro-measuring device network communication system. Self-organizing network configuration and adaptive frequency adjustment ensure signal transmission stability and coverage. The low-power design of this invention reduces maintenance costs and operational complexity. The signal relay function of the micro-measuring devices extends the communication coverage. This invention provides a highly efficient and robust real-time monitoring method for downhole environments.

[0114] Figure 3 This is a schematic diagram of a time-division transmission device for drilling measurement data provided in an embodiment of the present invention, as shown below. Figure 3As shown, the time-sharing transmission equipment for drilling measurement data may include the above-mentioned Figure 2 The illustrated system is a time-division multiplexing system for transmitting measurement-while-drilling data in oil and gas wells based on a local BLE-Mesh architecture. Optionally, the time-division multiplexing device 310 for transmitting measurement-while-drilling data may include a first processor 2001.

[0115] Optionally, the time-sharing transmission device 310 for measurement while drilling data may also include a memory 2002 and a transceiver 2003.

[0116] The first processor 2001, memory 2002, and transceiver 2003 can be connected via a communication bus.

[0117] The following is combined Figure 3 A detailed description of each component of the time-sharing transmission equipment 310 for measurement while drilling data is provided below:

[0118] The first processor 2001 is the control center of the time-sharing transmission device for drilling measurement data 310. It can be a single processor or a collective term for multiple processing elements. For example, the first processor 2001 can be one or more central processing units (CPUs), application-specific integrated circuits (ASICs), or one or more integrated circuits configured to implement embodiments of the present invention, such as one or more digital signal processors (DSPs), or one or more field-programmable gate arrays (FPGAs).

[0119] Optionally, the first processor 2001 can perform various functions of the time-sharing transmission device 310 for drilling measurement data by running or executing software programs stored in the memory 2002 and calling data stored in the memory 2002.

[0120] In a specific implementation, as one example, the first processor 2001 may include one or more CPUs, for example... Figure 3 CPU0 and CPU1 are shown in the diagram.

[0121] In a specific implementation, as one example, the time-division transmission device 310 for drilling measurement data may also include multiple processors, such as... Figure 3The first processor 2001 and the second processor 2004 are shown in the diagram. Each of these processors can be a single-core processor or a multi-core processor. Here, a processor can refer to one or more devices, circuits, and / or processing cores used to process data (such as computer program instructions).

[0122] The memory 2002 is used to store the software program that executes the present invention, and is controlled by the first processor 2001 to execute it. The specific implementation method can be referred to the above method embodiment, and will not be repeated here.

[0123] Optionally, the memory 2002 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto. The memory 2002 may be integrated with the first processor 2001 or may exist independently, and may be connected via the interface circuit of the drilling measurement data time-sharing transmission device 310. Figure 3 (Not shown in the image) is coupled to the first processor 2001, and this embodiment of the invention does not specifically limit this.

[0124] The transceiver 2003 is used to communicate with network devices or with terminal devices.

[0125] Alternatively, transceiver 2003 may include a receiver and a transmitter. Figure 3 (Not shown separately). The receiver is used to implement the receiving function, and the transmitter is used to implement the transmitting function.

[0126] Optionally, the transceiver 2003 can be integrated with the first processor 2001, or it can exist independently and be connected to the interface circuit of the time-sharing measurement data transmission device 310. Figure 3 (Not shown in the image) is coupled to the first processor 2001, and this embodiment of the invention does not specifically limit this.

[0127] It should be noted that, Figure 3 The structure of the time-division transmission device 310 for drilling measurement data shown in the figure does not constitute a limitation on the router. The actual knowledge structure identification device may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0128] Furthermore, the technical effect of the time-sharing transmission device 310 for measurement while drilling data can be referred to the technical effect of the time-sharing transmission method for oil and gas well measurement while drilling based on local BLE-Mesh described in the above method embodiments, and will not be repeated here.

[0129] It should be understood that the first processor 2001 in the embodiments of the present invention may be a central processing unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0130] It should also be understood that the memory in the embodiments of the present invention can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of random access memory (RAM) are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate synchronous DRAM (DDR SDRAM), enhanced synchronous DRAM (ESDRAM), synchronous linked DRAM (SLDRAM), and direct rambus RAM (DR RAM).

[0131] The above embodiments can be implemented, in whole or in part, by software, hardware (such as circuits), firmware, or any other combination thereof. When implemented using software, the above embodiments can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable system. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more sets of available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. A semiconductor medium can be a solid-state drive.

[0132] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. A and B can be singular or plural. Additionally, the character " / " in this article generally indicates an "or" relationship between the preceding and following related objects, but it can also represent an "and / or" relationship. Please refer to the context for a more accurate understanding.

[0133] In this invention, "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of a single item or a plurality of items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be a single item or multiple items.

[0134] It should be understood that, in various embodiments of the present invention, the order of the above-mentioned process numbers does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0135] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0136] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the devices, systems, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0137] In the embodiments provided by this invention, it should be understood that the disclosed devices, systems, and methods can be implemented in other ways. For example, the system embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between systems or units may be electrical, mechanical, or other forms.

[0138] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0139] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0140] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0141] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A time-division transmission method for oil and gas well measurement-while-drilling data based on local BLE-Mesh, characterized in that, The method includes: Based on a pre-defined distribution algorithm, the miniature measuring instruments deployed at the bottom of the well spontaneously construct the first topology network; The first topology network, spontaneously constructed by the miniature measuring instruments deployed at the bottom of the well based on a preset distribution algorithm, includes: Using BLE-Mesh technology, the miniature measuring device scans the communication signal to obtain the signal scanning result; Based on the signal scanning results, the signal strength is evaluated to obtain the connection quality between adjacent devices; Based on the connection quality of the adjacent devices and the preset distribution algorithm, the micro measuring devices establish communication connections with each other using the current optimal strategy to obtain a first topology network; The BLE-Mesh technology is used to ensure that the micro measuring device can establish a connection with adjacent devices and build a first topology network; When the downhole intelligent measurement sub reaches the target position downhole, the downhole intelligent measurement sub releases the carried miniature measuring device to join the first topology network and obtain the second topology network; As the drilling fluid rises, data is acquired through the downhole intelligent measurement sub based on the second topology network to obtain downhole measurement data. The process of acquiring downhole measurement data during the ascent of the drilling fluid, based on the second topology network and through the downhole intelligent measurement sub, includes: The second topology network and the downhole smart measurement sub establish communication; The current environment is measured using the downhole intelligent measurement sub to obtain test data; Based on the test data, a communication stability assessment is performed to obtain the stability assessment result. When the stability judgment result is stable, data is collected through the downhole intelligent measurement sub. When the data reaches the preset amount, downhole measurement data is obtained. The method further includes, after determining the communication stability based on the test data and obtaining the stability determination result, the method also includes: When the stability assessment result is unstable, the micro-measuring device in the second topology network recalculates the current communication quality. Based on the current communication quality, the communication frequency of the second topology network is adaptively adjusted. The downhole measurement data is transmitted to the micro measuring device for storage; At the ground control center, the downhole measurement data is transmitted to the host computer via Bluetooth, where it is analyzed and processed to obtain time-sharing measurement data.

2. The method for time-division transmission of oil and gas well measurement-while-drilling data based on local BLE-Mesh according to claim 1, characterized in that, The micro measuring device has two operating modes: a storage mode and a measurement mode. The storage mode is the operating mode of the miniature measuring instrument used to receive measurement data; The measurement mode is a working mode for a miniature measuring instrument used to extend communication coverage; The micro measuring device in storage mode will switch to the micro measuring device in measurement mode when the amount of stored data reaches a preset amount.

3. The method for time-division transmission of oil and gas well measurement-while-drilling data based on local BLE-Mesh according to claim 1, characterized in that, When the downhole intelligent measurement sub reaches the target position, it releases its carried miniature measuring device to join the first topology network, thus obtaining the second topology network, including: The miniature measuring device released by the downhole intelligent measuring sub is added to the first topology network to obtain the second topology network to be adjusted. The micro measuring device of the second topology network to be adjusted calculates the network performance of the micro measuring device under the current environment and obtains network performance data. Based on the network performance data and the preset communication distance, data analysis is performed to obtain the device network role of the micro measuring device; Based on the network role of the device, the second topology network to be adjusted is dynamically adjusted to obtain the second topology network.

4. The time-division transmission method for oil and gas well measurement-while-drilling data based on local BLE-Mesh according to claim 3, characterized in that, The network roles of the devices include router roles and terminal device roles; The router role refers to the miniature measuring device used for communication signal relay; the communication signal relay adopts multi-hop transmission technology; The terminal device role refers to a miniature measuring device used for signal acquisition.

5. A time-division transmission system for oil and gas well measurement-while-drilling data based on local BLE-Mesh, wherein the system is used to implement the time-division transmission method for oil and gas well measurement-while-drilling data based on local BLE-Mesh as described in any one of claims 1-4, characterized in that, The system includes a miniature measuring device, a downhole intelligent measuring sub, and electronic equipment, wherein: The micro measuring device is used to spontaneously construct a first topology network based on a preset distribution algorithm. When the downhole intelligent measuring sub reaches the target position, the downhole intelligent measuring sub releases the micro measuring device it carries and joins the first topology network to obtain a second topology network. The downhole intelligent measurement sub is used to acquire downhole measurement data based on the second topology network during the rise of drilling fluid; and to transmit the downhole measurement data to the micro measuring device for storage. The electronic device is used to transmit the downhole measurement data to a host computer via Bluetooth from the ground control center, perform data analysis and processing on the downhole measurement data, and obtain time-sharing measurement data.

6. A time-division transmission device for drilling measurement data, characterized in that, The time-division transmission device for drilling measurement data includes: processor; A memory storing computer-readable instructions that, when executed by the processor, implement the method as described in any one of claims 1 to 4.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium contains program code that can be invoked by a processor to execute the method as described in any one of claims 1 to 4.

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