Drilling tool state monitoring and management system based on RFID technology and WITS protocol data

Abstract

The invention provides a drilling tool state monitoring and management system based on an RFID technology and WITS protocol data. According to the system, original data from a WITS protocol is processed through an algorithm and combined with RFID tag data on a drilling tool and other physical parameters of the drilling tool, the specific working state and health condition of the drilling tool in a well are calculated, and therefore the actual state of the drilling tool is monitored and evaluated in real time; the drilling operation efficiency is improved, the maintenance cost is reduced, and the safety is improved.

Description

Technical Field

[0001] This application relates to a drill string status monitoring and management system based on RFID technology and WITS protocol data, belonging to the technical field of drill string management. Background Art

[0002] In traditional drilling operations, the management of drill strings (such as drill pipes) faces many challenges. Especially during downhole operations, how to real-time understand the health status, working environment, and stress conditions of drill strings has always been a key issue in improving operation efficiency and safety. Although the WITS protocol can provide downhole operation data (such as temperature, pressure, torque, etc.), relying solely on these data cannot comprehensively reflect the actual working conditions of drill strings. Especially when the status of drill strings and the operation environment underground change, how to combine these data with the physical characteristics of drill strings themselves for scientific analysis and prediction has become a problem waiting to be solved. Summary of the Invention

[0003] This application provides a drill string status monitoring and management system based on RFID technology and WITS protocol data to solve many problems existing in the prior art.

[0004] To solve the above problems, an embodiment of this application provides a drill string status monitoring and management system based on RFID technology and WITS protocol data, which includes: RFID tags, handheld readers, wellhead acquisition devices, industrial control computers, and back-end management terminals; Among them, the RFID tags are set on the drill strings and are used to record relevant information about the entire life cycle of the corresponding drill strings; The handheld readers are used to read the information of the RFID tags and write information to the RFID tags in the management process of the entire life cycle of the drill strings; The wellhead acquisition devices are set at the wellhead of the operation site during use, and are built-in with fixed readers. The built-in fixed readers are used to record the up-and-down well time of the drill strings. The wellhead acquisition devices also obtain the status information of the drill strings collected by the sensors on the drill strings when the drill strings are working underground, and transmit the status information to the industrial control computer through the WITS protocol; The industrial control computers are set at the operation site during use and are communicatively connected to the wellhead acquisition devices, and are used to obtain the information collected by the wellhead acquisition devices, process the status information and physical information of the drill strings to obtain the working conditions information of the drill strings, and then send the working conditions information to the back-end management terminals; The back-end management terminals are remotely communicatively connected to the industrial control computers, and are used to analyze and process the information sent by the industrial control computers, store the analyzed and processed data in the database, and visually display the set data according to the configured display rules; Among them, the calculation formula for the comprehensive evaluation data of the drill string health is as follows:

[0005] In the formula, represents the comprehensive evaluation data of the drill string health, represents the length deviation, represents the weight corresponding to the length deviation, represents the depth anomaly, represents the weight corresponding to the depth anomaly, represents the tag reading delay, represents the weight corresponding to the tag reading delay, represents the stress state, represents the weight corresponding to the stress state, represents the torque state, represents the weight corresponding to the torque state, represents the temperature state, represents the weight corresponding to the temperature state; among them, each weight is determined based on historical data and dynamically adjusted according to the actual situation; Length deviation The calculation formula is:

[0006] In the formula, represents the measured length of the drill string, represents the standard length of the drill string; Depth anomaly The calculation formula is:

[0007] In the formula, represents the measured depth of the well and the expected depth , represents the allowable depth deviation range; and when the depth change rate exceeds the set normal range, the depth anomaly is increased; Tag reading delay The calculation formula is:

[0008] In the formula, represents the tag reading time, and the normal tag reading time range is ; if ; if then calculate according to the above formula; Stress state The calculation formula is:

[0009] In the formula, represents the theoretical force calculated through a pre-established model; represents the actually measured or estimated force; Torque state The calculation formula is:

[0010] In the formula, represents the theoretical torque calculated through a pre-established model; represents the actually measured torque; Temperature state The calculation formula is:

[0011] In the formula, represents the theoretical temperature calculated through a pre-established model, represents the wellhead temperature, represents the geothermal gradient; represents the actually measured or estimated temperature.

[0012] Based on the above drill string status monitoring and management system based on RFID technology and WITS protocol data, optionally, the network source at the operation site is the internal network, and through the Mesh networking method at the operation site, a local area network with a single drilling site as the core is formed, and the routing is issued through the industrial control computer to realize data transmission between the fixed reader / writer, handheld reader / writer and the internal network.

[0013] Based on the above drill string status monitoring and management system based on RFID technology and WITS protocol data, optionally, the fixed reader / writer of the wellhead acquisition device is connected to the industrial control computer using the POE method or a user-defined communication method to realize data transmission and command control.

[0014] Based on the above drill string status monitoring and management system based on RFID technology and WITS protocol data, optionally, the industrial control computer deployed at the operation site is linked with the background management terminal through regular backup and regular upload, or the industrial control computer deployed at the operation site is linked with the background management terminal in real time, data collection and transmission are completed at the operation site, and data calculation and application are performed through the background management terminal at the information center.

[0015] Based on the above drill string status monitoring and management system based on RFID technology and WITS protocol data, optionally, an antenna is provided on the drill string, and the wellhead acquisition device is arranged in an explosion-proof box under the derrick at the operation site, and obtains the status information of the drill string collected by the sensors on the drill string through a multi-channel ultra-high frequency reader-writer.

[0016] Based on the above drill string status monitoring and management system based on RFID technology and WITS protocol data, optionally, the handheld reader-writer locks the communication with the fixed reader-writer through the IP address to perform command operations and database retrieval.

[0017] Based on the above drill string status monitoring and management system based on RFID technology and WITS protocol data, optionally, for anomalies during the data acquisition process, including sensor failures, data loss, or abnormal values, the system performs anomaly processing, and when the data exceeds the reasonable range, data interpolation processing is performed.

[0018] Based on the above drill string status monitoring and management system based on RFID technology and WITS protocol data, optionally, it further includes a client terminal communicatively connected to the background management terminal for obtaining and viewing the data processed by the background management terminal.

[0019] Based on the above drill string status monitoring and management system based on RFID technology and WITS protocol data, optionally, the weight distribution of each index is as follows: 1) Length deviation ( ): 0.1; 2) Depth anomaly ( ): 0.15; 3) Tag reading delay ( ): 0.05; 4) Stress state ( ): 0.25; 5) Torque state ( ): 0.25; 6) Temperature state ( ): 0.2.

[0020] The technical solution provided by this application has the following beneficial effects: 1) Comprehensive data analysis and precise matching: By combining WITS protocol data with information such as the RFID tag data, physical characteristics, and downhole depth of the drill string, the system can more accurately evaluate the working conditions of each drill string, rather than just displaying WITS protocol data.

[0021] 2) Intelligent drill string health assessment: Through algorithm calculation and data matching, the system can accurately evaluate the working state, stress condition, health status, etc. of the drill string, helping operators to discover potential problems in a timely manner.

[0022] 3) Improve operation safety and efficiency: By accurately evaluating the status of drill tools, the risk of overusing or prematurely scrapping drill tools is reduced, enhancing the safety and working efficiency of drilling operations.

[0023] 4) Reduce maintenance costs and extend service life: The system can provide scientific maintenance and replacement suggestions based on the actual working conditions and usage status of drill tools, helping enterprises reduce unnecessary maintenance costs and extend the service life of drill tools.

[0024] 5) Intuitive data display and decision support: Real-time monitoring and visual display on the back-end management terminal help operators quickly understand the working status of drill tools, facilitating timely decisions on maintenance and resource scheduling. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. In addition, these drawings and the text description are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments.

[0026] Figure 1 Schematic diagram of the architecture of a drill tool status monitoring and management system based on RFID technology and WITS protocol data provided for an embodiment of the present application; Figure 2 Swimlane diagram of the entire usage process of drill tools provided for an embodiment of the present application; Figure 3 Schematic diagram of the on-site acquisition networking solution for drill tools provided for an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] To make the objectives, technical solutions, and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application. Without conflict, the following embodiments and the features in the embodiments may be combined with each other.

[0028] To solve many problems in the process of drill tool use and management, this application provides a drill tool status monitoring and management system based on RFID technology and WITS protocol data. This system processes the original data from the WITS protocol through algorithms, combines it with the RFID tag data on the drill tool and other physical parameters of the drill tool, and calculates the specific working status and health status of the drill tool underground, so as to monitor and evaluate the actual status of the drill tool in real time, thereby improving the drilling operation efficiency, reducing the maintenance cost, and enhancing the safety. The following provides a non-limiting description of the specific implementation solutions through several examples or embodiments.

[0029] Some embodiments of this application provide a drill tool status monitoring and management system based on RFID technology and WITS protocol data. Referring to Figure 1 , the drill tool status monitoring and management system based on RFID technology and WITS protocol data in this embodiment includes: RFID tags, handheld readers, wellhead acquisition devices, industrial control computers, and background management terminals.

[0030] Among them, the RFID tags are set on the drill tools and are used to record the relevant information of the corresponding drill tools throughout their life cycles, including basic information and operation information and usage information in the processes of warehousing, issuance, use, maintenance, inspection, return to the warehouse, and scrapping. Specifically, the RFID tags are essentially RFID chips, which are embedded in the drill tools, and the specific installation positions can be selected according to the actual situation to ensure that they can be correctly read and written without affecting the normal use of the drill tools.

[0031] The handheld readers are used to read the information of the RFID tags and write information to the RFID tags in the management processes of the drill tools throughout their life cycles. The management processes throughout the life cycles include warehousing, issuance, use, maintenance, inspection, return to the warehouse, and scrapping processes. Specifically, in the entire life cycle, relevant personnel at each stage can use the handheld readers to read the information of the RFID tags and write new information to the RFID tags. The swimlane diagram of the entire usage process is as shown in Figure 2 shown.

[0032] The wellhead acquisition device is set at the wellhead of the operation site during use, and is built-in with a fixed RFID reader, which is used to record the up-and-down well time of the drill string. The wellhead acquisition device also obtains the status information (such as temperature, pressure, torque, etc.) of the drill string collected by the sensors on the drill string when the drill string is working underground; the wellhead acquisition device can also be connected to other sensors underground to collect the working status information of the drill string and transmit these status information to the system through the WITS protocol. Among them, when the drill string goes down the well, when it passes through the wellhead, it will communicate with the wellhead acquisition device through radio frequency, and the wellhead acquisition device records the time at this time, which is the down-well time. Similarly, when the drill string moves up from underground to leave the wellhead, it communicates with the wellhead acquisition device, and the wellhead acquisition device records the time at this time, which is the up-well time. In this way, the operation time of the drill string can be accurately recorded, which is convenient for relevant personnel to know the use time of each drill string, so as to better judge the service life of the drill string. The status information of the drill string collected by the sensor includes but is not limited to information such as torque, pressure, temperature, underground duration, and footage of entering the well.

[0033] The industrial control computer is set at the operation site during use and is communicatively connected to the wellhead acquisition device, and is used to obtain the information collected by the wellhead acquisition device, and process the status information and physical information of the drill string to obtain the working condition information of the drill string, and then send the working condition to the background management terminal. Specifically, the industrial control computer serves as the management center of the operation site, responsible for the summary, calculation of on-site information, and the interaction of data and instructions with the remote background management terminal. The core function of the industrial control computer is to comprehensively analyze and calculate the underground operation data (such as pressure, temperature, torque, underground footage, etc.) obtained from the WITS protocol and the physical information of the drill string (such as drill string length, position, RFID tag data, down-well depth, etc.) through software algorithms, so as to deduce the specific working condition information of each drill string. For example, according to the down-well depth and length of the drill string, as well as the temperature, pressure and other data obtained from the wellhead sensors, the force and torque changes of the drill string at different depth positions can be calculated.

[0034] The back-end management terminal is remotely communicatively connected to the industrial control computer, and is used to analyze and process the information sent by the industrial control computer (such as information on the torque, pressure, temperature, downhole duration, and depth of penetration of the drill string, etc.), obtain comprehensive evaluation data on the health of the drill string, store the comprehensive evaluation data on the health of the drill string in the database, and perform visual display according to the configured display rules. Specifically, the back-end management terminal can adopt a server or a computer, connect to the database, and through the built-in software platform, analyze and process the data and information uploaded by the industrial control computers at each job site, obtain a series of key data, and perform storage and visual display to provide decision-making support for managers. For example, the back-end management terminal visually displays the status of each drill string after calculation (such as working temperature, pressure, torque, remaining life, etc.), generates a detailed analysis report and warning information. Through intuitive data display, it helps the operators monitor the health status of the drill string and make corresponding maintenance decisions.

[0035] Among them, the focus of this system is to process the raw data from the WITS protocol through algorithms, combine it with the RFID tag data on the drill string and other physical parameters of the drill string, and deduce the specific working status and health status of the drill string downhole. Specifically, the working process of the system includes the following steps: 1) RFID tag data collection and calibration: Through the RFID tag, the system can obtain the basic information, length, number, usage times, maintenance history, etc. of the drill string. This information helps to determine the physical characteristics of each drill string.

[0036] 2) WITS protocol data collection: Collect the downhole operation data transmitted by the WITS protocol through the wellhead collection device. These data include sensor information such as downhole temperature, pressure, torque, and depth of penetration. Although these data can reflect the downhole operation environment, they cannot be directly used to evaluate the actual working conditions of each drill string.

[0037] 3) Data matching and algorithm deduction: The system receives and processes the WITS protocol data from the wellhead collection device through the industrial control computer, and matches these data with the physical parameters of the drill string (such as drill string length, downhole depth, tag reading time, etc.) through algorithms. The system uses a calculation model to deduce parameters such as the specific force, torque, and temperature of the drill string downhole based on the length, downhole depth, and position of the drill string. For example, the system can deduce the working status of the drill string at a specific downhole position based on the depth and entry time when the drill string enters the well, combined with real-time data such as the pressure and temperature at the wellhead.

[0038] 4) Precise evaluation and status prediction: Through comprehensive analysis of data such as the force, temperature, and pressure of the drill string, the system can accurately evaluate the health status of the drill string and predict its remaining life. The system can also timely detect the possible damage risks of the drill string according to changes in the operation environment and give suggestions for maintenance or replacement.

[0039] Data Visualization and Decision Support: The back-end management terminal provides real-time status monitoring and data visualization functions to help operators clearly understand the working status and health conditions of each drill string. The system will automatically generate analysis reports, trend charts, and warning messages to guide operators in making scientific decisions and resource allocation.

[0040] Among them, the algorithm processing part includes: 1) Data collection and integration Data sources: Physical parameters of the drill string: including the length of the drill string (unit: meter), the depth of the well (unit: meter), the tag reading time (unit: second), etc. Through the mapping of the RFID chip and the software system, they are stored in the database.

[0041] Real-time wellhead data: including wellhead pressure (unit: Pascal), wellhead temperature (unit: degree Celsius), etc.

[0042] Downhole Wits data: such as drilling pressure (unit: Newton), torque (unit: Newton-meter), vibration (unit: m / s²), etc. These data can be obtained through downhole sensors, transmitted through the Wits protocol, and stored in the database for downhole use of the drill string.

[0043] Data integration: Integrate the data from the above different sources to form a complete data set for subsequent evaluation calculations.

[0044] 2) Algorithm matching and parameter calculation Algorithm core: Use a specific calculation model to combine the physical parameters of the drill string with the wellhead and downhole data to calculate the specific forces on the drill string in the well (unit: Newton), torque (unit: Newton-meter), temperature (unit: degree Celsius), etc. parameters.

[0045] In some embodiments, the calculation formula for the comprehensive evaluation data of the drill string health is:

[0046] In the formula, represents the comprehensive evaluation data of the drill string health, represents the length deviation, represents the weight corresponding to the length deviation, represents the depth anomaly, Represents the weight corresponding to the depth anomaly, Represents the tag reading delay, Represents the weight corresponding to the tag reading delay, Represents the stress state, Represents the weight corresponding to the stress state, Represents the torque state, Represents the weight corresponding to the torque state, Represents the temperature state, Represents the weight corresponding to the temperature state; among them, each weight is determined based on historical data and dynamically adjusted according to the actual situation.

[0047] The following are the calculation indicators: 1) Physical parameter related indicators ① Length deviation ， Refers to the deviation of the actual length of the drill string relative to the standard length.

[0048] Length deviation The calculation formula is:

[0049] In the formula, Represents the measured length of the drill string, Represents the standard length of the drill string; Length deviation The score range is from 0 (no length deviation) to 100 (extremely large length deviation).

[0050] ② Depth anomaly , refers to the abnormal deviation of the actual downhole depth of the drill string relative to the expected downhole depth.

[0051] Depth anomaly The calculation formula is:

[0052] In the formula, Represents the measured downhole depth, represents the expected depth , Represents the allowable depth deviation range; and when the depth change rate exceeds the set normal range, the depth anomaly is increased; Depth anomaly The score range is from 0 (normal depth) to 100 (severe depth anomaly).

[0053] ③ Tag reading delay , refers to the delay time from the moment when the tag data is actually read to the moment when the read instruction is issued.

[0054] Tag reading delay The calculation formula is as follows:

[0055] In the formula, represents the tag reading time. The normal tag reading time range is ; if ; if then calculate according to the above formula; Tag reading delay has a score range from 0 (no delay) to 100 (severe reading delay).

[0056] 2) Downhole state calculation indicators ① Stress state refers to the abnormal deviation of the actual stress of the drill string relative to the theoretical stress.

[0057] Stress state The calculation formula is as follows:

[0058] In the formula, represents the theoretical stress calculated through a pre-established model; represents the actually measured or estimated stress; Stress state has a score range from 0 (severe abnormal stress state) to 100 (normal stress state).

[0059] In addition, according to the physical formula ( is the mass of the drill string, is the acceleration), combined with the downhole depth and wellhead pressure and other factors, considering the influence of gravity, friction and fluid pressure, establish a complex mechanical model to calculate the theoretical stress .

[0060] ② Torque state refers to the abnormal deviation of the actual torque of the drill string relative to the theoretical torque.

[0061] Torque state The calculation formula is as follows:

[0062] In the formula, represents the theoretical torque calculated through a pre-established model; represents the actually measured torque; Torque state The score ranges from 0 (severe abnormality in torque state) to 100 (normal torque state). Among them, the theoretical torque can be calculated by combining factors such as the geometry of the drill string, the rotational speed of the drill string (unit: radians per second), and the downhole friction coefficient and other factors. .

[0063] ③ Temperature state , which refers to the abnormal deviation of the actual temperature of the drill string from the theoretical temperature.

[0064] Temperature state The calculation formula is as follows:

[0065] In the formula, represents the theoretical temperature calculated through a pre-established model, represents the wellhead temperature, represents the geothermal gradient; represents the actually measured or estimated temperature; Temperature state The score ranges from 0 (severe abnormality in temperature state) to 100 (normal temperature state).

[0066] Through the above indicators, combined with the weights of each indicator, the comprehensive evaluation data of the drill string health can be calculated. When the score is lower than 60, the corresponding alarm can be triggered, and an alarm can be sent to the operator by means of sound, light or message notification.

[0067] It can be understood that the weights of the indicators can be dynamically adjusted according to actual usage experience and a large amount of historical data to optimize the evaluation model. For example, in some geological conditions, the torque state may be more critical, and the weight of the torque state can be appropriately increased.

[0068] In some embodiments, according to the importance to the performance and safety of the drill string, the weights assigned to each indicator are as follows: 1) Length deviation ( ): 0.1; 2) Depth abnormality ( ): 0.15; 3) Tag reading delay ( ): 0.05; 4) Force state ( ): 0.25; 5) Torque state ( ): 0.25; 6) Temperature state ( ): 0.2.

[0069] The technical solution provided by this application has the following beneficial effects: 1) Comprehensive data analysis and precise matching: By combining WITS protocol data with information such as RFID tag data, physical characteristics, and downhole depth of drill collars, the system can more accurately evaluate the working conditions of each drill collar, rather than just displaying WITS protocol data.

[0070] 2) Intelligent drill collar health assessment: Through algorithm calculation and data matching, the system can accurately evaluate the working state, stress condition, health status, etc. of drill collars, helping operators promptly discover potential problems.

[0071] 3) Improve operation safety and efficiency: Through precise assessment of the drill collar state, the risk of overusing or prematurely scrapping drill collars is reduced, enhancing the safety and working efficiency of drilling operations.

[0072] 4) Reduce maintenance costs and extend service life: The system can provide scientific maintenance and replacement suggestions based on the actual working conditions and usage status of drill collars, helping enterprises reduce unnecessary maintenance costs and extend the service life of drill collars.

[0073] 5) Intuitive data display and decision support: Real-time monitoring and visual display on the back-end management terminal help operators quickly understand the working state of drill collars, facilitating timely decision-making on maintenance and resource scheduling.

[0074] In addition, in some embodiments, for anomalies during the data collection process, including sensor failures, data loss, or outliers, the system performs anomaly processing, and when the data exceeds a reasonable range, data interpolation processing is carried out.

[0075] In addition, the on-site data collection networking solution for drill collars on the wellhead is as Figure 3 shown below: a. The network source at the operation site is the internal network, and at the operation site, through the Mesh networking method, a local area network with a single drilling site as the core is formed. Routing is distributed through an industrial control computer ( Figure 3 a combination of the intelligent gateway and edge box therein), enabling data transmission between the fixed reader ( Figure 3 the multi-channel ultra-high frequency reader therein), the handheld reader ( Figure 3 the handheld device therein) and the internal network. Among them, the Mesh networking method is a wireless network technology that interconnects multiple routers or access points (APs) in a multi-hop manner to form a dynamic network architecture, and any two devices can maintain wireless interconnection. The Mesh networking has advantages such as strong scalability, high reliability, fast deployment, and easy installation, and is suitable for the deployment solution of this application.

[0076] b. The fixed RFID reader of the wellhead acquisition device is connected to the industrial control computer using the POE method or a user-defined communication method to achieve data transmission and command control. While ensuring stable transmission, it avoids the possibility of data interruption and loss caused by external network attacks. POE (Power over Ethernet) is a technology that simultaneously transmits data and power through an Ethernet cable. The POE technology enables devices to be powered through standard Ethernet cables (such as Cat5e or Cat6), thus simplifying the wiring and installation process and reducing the need for power cables.

[0077] c. The industrial control computer deployed at the operation site is linked with the background management terminal ( Figure 3 in the information center of) through regular backup and regular upload, or the industrial control computer deployed at the operation site is linked with the background management terminal in real time. Data collection and transmission are completed at the operation site, and data calculation and application are carried out through the background management terminal in the information center.

[0078] d. The handheld RFID reader locks the communication with the fixed RFID reader through the IP address for command operations and database retrieval.

[0079] Among them, as Figure 3 shown, in some embodiments, an antenna is provided on the drill string, and the wellhead acquisition device also includes an antenna. The wellhead acquisition device is arranged in an explosion-proof box under the derrick at the operation site to protect the wellhead acquisition device. And the wellhead acquisition device obtains the status information of the drill string collected by the sensors on the drill string through a multi-channel ultra-high-frequency RFID reader.

[0080] In addition, in some embodiments, the background management terminal collects and summarizes the process information and attribute change information generated during the use of the drill string to form an independent database, and extracts the key information therein for visual display.

[0081] The key information includes but is not limited to storage conditions, drill string health intervals, drill string dynamics in the well, drill string maintenance dynamics, failure rates, etc. These information can be visually displayed in the form of images, charts, etc., which is convenient for managers to view.

[0082] In addition, the wellhead acquisition device transmits the status information of the drill string during downhole operations through the Wits protocol.

[0083] Specifically, the Wits protocol is a commonly used transmission protocol for wellhead data acquisition in the oil drilling industry. The form of a single piece of data is a code composed of a string of characters, which has readability problems. The management system accesses the Wits protocol in the wellhead logging room at the drilling site, realizes real-time communication between the wellhead data and the system through TCP / IP transmission, decodes the Wits data, and visually displays it in the software system through software algorithms.

[0084] In addition, in some embodiments, the management system further includes a customer terminal communicatively connected to the background management terminal for obtaining and viewing the data processed by the background management terminal. These customer terminals may include a PC, a PAD, a printer, etc., facilitating the manager to remotely view relevant information and perform printing.

[0085] It can be understood that the same or similar parts in the above embodiments can be referred to each other, and the content not detailed in some embodiments can be seen in the same or similar content of other embodiments.

[0086] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0087] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A drilling tool status monitoring and management system based on RFID technology and WITS protocol data, characterized in that: include: RFID tags, handheld readers, wellhead collection devices, industrial computers and background management terminals; Wherein, the RFID tag is set on the drilling tool to record relevant information of the entire life cycle of the corresponding drilling tool; The handheld reader is used to read the information of the RFID tag and write information to the RFID tag during the management process of the whole life cycle of the drilling tool; The wellhead data acquisition device is arranged at the wellhead of the operation site when in use, and has a built-in fixed reader / writer, which is used to record the time when the drilling tool goes up and down the well. The wellhead data acquisition device also obtains the status information of the drilling tool collected by the sensor on the drilling tool when the drilling tool is working underground, and transmits the status information to the industrial computer through the WITS protocol; The industrial computer is arranged at the operation site when in use, and is connected to the wellhead acquisition device for communication, so as to obtain the information collected by the wellhead acquisition device, and obtain the working condition information of the drilling tool based on the state information and physical information of the drilling tool, and then send the working condition information to the background management terminal; The backend management terminal is remotely connected to the industrial computer for analyzing and processing the information sent by the industrial computer to obtain comprehensive evaluation data of drilling tool health, store the comprehensive evaluation data of drilling tool health in a database, and visualize the set data according to the configured display rules; The calculation formula for the comprehensive evaluation data of drilling tool health is: In the formula, Indicates the comprehensive evaluation data of drilling tool health. Indicates the length deviation, represents the weight corresponding to the length deviation, Indicates a depth anomaly. represents the weight corresponding to the deep anomaly, Indicates the tag reading delay, Indicates the weight corresponding to the tag reading delay, Indicates the stress state, represents the weight corresponding to the force state, Indicates the torque state, represents the weight corresponding to the torque state, Indicates the temperature status, Indicates the weight corresponding to the temperature state; each weight is determined based on historical data and dynamically adjusted according to actual conditions; Length deviation The calculation formula is: In the formula, Indicates the measured length of the drilling tool, Indicates the standard length of the drilling tool; Depth Abnormality The calculation formula is: In the formula, Indicates the measured well depth, indicates the expected depth , Indicates the allowable depth deviation range; and when the depth change rate If it exceeds the set normal range, the depth abnormality will be increased. ; Tag read delay The calculation formula is: In the formula, Indicates the tag reading time. The normal tag reading time range is ;if ;if Then calculate according to the above formula; Stress state The calculation formula is: In the formula, It represents the theoretical force calculated by the pre-established model; Indicates actual measured or estimated forces; Torque status The calculation formula is: In the formula, It represents the theoretical torque calculated by the pre-established model; Indicates the actual measured torque; Temperature status The calculation formula is: In the formula, represents the theoretical temperature calculated by the pre-established model, represents the wellhead temperature, represents the geothermal gradient; Indicates the actual measured or estimated temperature.

2. The drilling tool status monitoring and management system based on RFID technology and WITS protocol data according to claim 1 is characterized in that: The network source of the operation site is the intranet, and a local area network with a single drilling site as the core is formed at the operation site through Mesh networking. Routes are issued by the industrial computer to realize data transmission between fixed readers, handheld readers and the intranet.

3. The drilling tool status monitoring and management system based on RFID technology and WITS protocol data according to claim 1 is characterized in that: The fixed reader / writer of the wellhead acquisition device is connected to the industrial computer using a POE method or a user-defined communication method to achieve data transmission and command control.

4. The drilling tool status monitoring and management system based on RFID technology and WITS protocol data according to claim 3 is characterized in that: The industrial computer deployed at the work site is linked with the background management terminal through regular backup and regular uploading, or the industrial computer deployed at the work site is linked with the background management terminal in real time, completes data collection and transmission at the work site, and calculates and applies data through the background management terminal in the information center.

5. The drilling tool status monitoring and management system based on RFID technology and WITS protocol data according to claim 1 is characterized in that: The drilling tool is provided with an antenna, and the wellhead acquisition device is arranged in a flameproof box below the derrick at the operation site, and acquires the status information of the drilling tool collected by the sensor on the drilling tool through a multi-channel ultra-high frequency reader.

6. The drilling tool status monitoring and management system based on RFID technology and WITS protocol data according to claim 1 is characterized in that: The handheld reader / writer locks the communication with the fixed reader / writer through the IP address to perform command operations and database retrieval.

7. The drilling tool status monitoring and management system based on RFID technology and WITS protocol data according to claim 1 is characterized in that: For anomalies in the data collection process, including sensor failure, missing data or abnormal values, the system performs exception processing. When the data exceeds a reasonable range, data interpolation processing is performed.

8. The drilling tool status monitoring and management system based on RFID technology and WITS protocol data according to claim 1 is characterized in that: It also includes a client terminal that is communicatively connected to the background management terminal and is used to obtain and view data processed by the background management terminal.

9. The drilling tool status monitoring and management system based on RFID technology and WITS protocol data according to claim 1 is characterized in that: The weights of each indicator are: 1) Length deviation ( ):0.1; 2) Depth Abnormality ( ):0.15; 3) Tag reading delay ( ):0.05; 4) Stress state ( ):0.25; 5) Torque state ( ):0.25; 6) Temperature status ( ):0.2.

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