A system and method for preventing misreads and missed reads of drilling tools during a drilling process

Abstract

The application discloses a drilling tool anti-misreading and missing reading system and method in a drilling process, and belongs to the technical field of drilling tool identity recognition. The system comprises a carpet type antenna arranged at a well mouth position, two infrared sensors arranged at a derrick thigh position, a reading and writing device and an anti-missing data algorithm processing module. The carpet type antenna and the reading and writing device are used for receiving signals of RFID tags on drill strings and sending the signals to the anti-missing data algorithm processing module. The two infrared sensors are used for passing time of each drill string and passing data of each drill string and sending the data to the anti-missing data algorithm processing module. The anti-missing data algorithm processing module is used for receiving information of the carpet type antenna and the two infrared sensors, and performing anti-misreading and missing reading judgment of a drilling operation, anti-misreading and missing reading judgment of a tripping operation and special situation judgment of the drilling and the tripping. The application solves the problems that the drilling tool based on the RFID tag is missed or misread during the well mouth operation, and effectively improves the data automatic recording ability of the drilling tool operation.

Description

Technical Field

[0001] This invention belongs to the field of drill string identification technology, specifically relating to a drill string anti-misreading and anti-missed reading system and method in the drilling process. Background Technology

[0002] In the oil extraction industry, with the development of technology and the demand for more refined management, the information management of oil drilling tools has become increasingly important. Current technologies include visual image reading and non-contact RFID identification. Patent CN115103950A discloses drilling tools and a system for drilling tool identification, including machined marks located on a perimeter surface. These machined marks are positioned on a portion of the perimeter surface and include a matrix of recesses with predetermined column and row positions to convey the identification of the drilling tool. Furthermore, when installed in a drilling rig, the machined marks are optically readable from multiple single directions. This patent document discloses a drilling tool identification system that solves the problem of NFC / RFID tags being unable to withstand harsh conditions and the high energy transmission experienced by drilling tools during operation, providing identification without requiring sensors to be installed on the drilling rig or in a fixed position relative to the drilling tool. However, the machined marks described in this method are easily covered by drilling mud during drilling operations, making visual identification impossible.

[0003] Radio Frequency Identification (RFID) technology is widely considered an effective means of achieving information management of oil drilling tools due to its advantages such as non-contact identification, simultaneous identification of multiple tags, and large information storage capacity. Using RFID technology for information management allows for real-time tracking of key information such as the usage status, location, and maintenance history of drilling tools, thereby optimizing tool allocation, improving utilization, reducing costs, and ensuring the safety and efficiency of drilling operations. Patent CN108198789B discloses a UHF RFID tag and its preparation method, which uses high-temperature encapsulation of polymer materials to fix the printed circuit board antenna, RFID tag chip, and other structures within a metal casing. The excellent mechanical properties and heat resistance of the polymer material ensure that the RFID tag can withstand the harsh engineering environment under the drilling platform; during normal reading and writing of the RFID tag, the dielectric constant of the polymer material ensures good overall performance of the tag antenna. However, in actual drilling operations, the low accuracy of drilling tool identification with RFID tags at the wellhead has become a prominent problem. The drilling site environment is harsh, with large amounts of mud, oil, vibration, and complex electromagnetic interference. These factors can severely impact RFID signals, causing signal attenuation, scattering, or shielding. Furthermore, the limited working space at the wellhead and the frequent movement of drilling tools necessitate that RFID identification systems accurately identify targets within a short timeframe. Current technology often falls short of these requirements under such complex conditions, leading to frequent identification errors or missed identifications, which seriously affects the normal operation and expected benefits of the oil drilling tool RFID information management system.

[0004] Therefore, when oil drilling tools are automatically identified using RFID tags, the reading and identification capabilities are reduced at the wellhead due to numerous factors, which in turn affects the information management of the drilling tools. Summary of the Invention

[0005] To address the problems in the prior art, this invention provides a drilling tool anti-misreading and anti-missed reading system and method for the drilling process, which solves the problems of missed or misreading of RFID tag-based drilling tools during wellhead operations, and effectively improves the automated data recording capability of drilling tool operations.

[0006] The objective of this invention is achieved through the following technical solution:

[0007] A drilling tool misreading / missed reading prevention system includes a carpet antenna installed at the wellhead, two infrared sensors installed at the derrick thighs, a reading / writing device, and a leak-proof data algorithm processing module. The carpet antenna and the reading / writing device work together to receive signals from RFID tags on the drill string and send them to the leak-proof data algorithm processing module. The two infrared sensors are used to record the passage time and passage data of each drill string and send them to the leak-proof data algorithm processing module. The leak-proof data algorithm processing module receives information from the carpet antenna and the two infrared sensors and performs leak-proof reading determination during drilling operations, leak-proof reading determination during tripping operations, and determination of special situations during drilling / tripping.

[0008] Preferably, the carpet-type antenna includes an anti-slip carpet and multiple antennas, which are evenly distributed on the anti-slip carpet.

[0009] Preferably, multiple antennas are used in the form of three, four, or six.

[0010] Preferably, the antenna signal has an angular offset, the offset angle being 30 to 45°.

[0011] Preferably, the anti-slip carpet has ripples or floating dots.

[0012] Preferably, the two infrared sensors are installed on the same horizontal plane, and the distance between the two infrared sensors is less than 10mm.

[0013] Preferably, the infrared sensor includes a transmitter and a receiver.

[0014] A method for preventing misreading or missed readings of drilling tools during the drilling process includes the following steps:

[0015] This includes the determination of missing readings during drilling operations, the determination of missing readings during tripping operations, and the determination of special circumstances during drilling / tripping.

[0016] Step 1: Determine whether the drilling tool is being lowered or pulled out using two infrared sensors and a leak-proof data processing module.

[0017] Step 2: The system uses a carpet antenna, two infrared sensors, and a data leak prevention algorithm processing module to determine whether the operation is a leak prevention check during drilling, a leak prevention check during tripping, a special situation check during drilling, a special situation check during tripping, or a combined drilling / tripping check.

[0018] Preferably, the drill string includes multiple drill strings, and each drill string includes 3 individual drill bits.

[0019] Preferably, in step one, when the drill string passes the first infrared sensor first and then the second infrared sensor, the anti-leakage data algorithm processing module determines that it is a drilling operation; when the drill string passes the second infrared sensor first and then the first infrared sensor, the anti-leakage data algorithm processing module determines that it is a tripping operation.

[0020] Preferably, in step two, during drilling operations, after the drill string passes the infrared sensor, the passage time Tn and the passage data Ln of the drill string are recorded. After each drill string is identified by the carpet antenna, the running times of the three drill strings n1 / n2 / n3 are recorded, respectively t n1 / t n2 / t n3 During tripping operations, each drill string component is identified by the carpet antenna, and the time each component is run into the well is recorded as t. n1’ / t n2’ / t n3’ When the drill string is pulled out of the drill string and moved into the drill string box, it passes through an infrared sensor and records the drill string passage time Tn' and drill string passage data Ln'; where n is 1, 2, 3...N; n' is 1, 2, 3...N.

[0021] Preferably, the determination of preventing missed readings during drilling operations includes the following steps:

[0022] When one drill string is not detected:

[0023] If drill string n1 is not identified, the time t recorded by the identified n2 and n3 is used. n2 and t n3 The time t for n1 to enter the well was calculated. n1 And supplement the record; Calculation method: t n1 =t n2 -(t n3 -t n2 );

[0024] If drill string n2 is not identified, the time t recorded by the identified n1 and n3 is used. n1 and t n3 The infeed time t of n2 was calculated. n2 And supplement the record; Calculation method: t n2 =(t n1 +t n3 ) / 2;

[0025] If drill string n3 is not identified, the time t recorded by the identified n1 and n2 is used. n1 and t n2 The time t for n3 to enter the well was calculated. n3 And supplement the record; Calculation method: t n3 =t n2 +(tn2 -t n1 );

[0026] When two drill strings, neither the topmost nor the bottommost, are not identified:

[0027] If drill strings n1 and n2 are not identified, the time t recorded by the identified n3 is used. n3 Based on the existing data from the previous drill string and drilling tools, calculate the entry times of n1 and n2 and supplement the records; Calculation method: t n1 =t n3 -(t i3 -t i1 );t n2 =t n3 -(t i3 -t i2 ); where i = n-1; n is 1, 2, 3…N;

[0028] If drill strings n1 and n3 are not identified, the time t recorded by the identified n2 is used. n2 Based on the existing data from the previous drill string and drilling tools, calculate the entry times of n1 and n3 and supplement the records; Calculation method: t n1 =t n2 -(t i2 -t i1 );t n3 =t n2 +(t i3 -t i2 ); where i = n-1; n is 1, 2, 3…N;

[0029] If drill strings n2 and n3 are not identified, the time t recorded by the identified n1 will be used. n1 Based on the existing data from the previous drill string and drilling tools, calculate the entry times of n2 and n3 and supplement the records; Calculation method: t n2 =t n1 +(t i2 -t i1 );t n3 =t n1 +(t i3 -t i1 ); where i = n-1; n is 1, 2, 3…N;

[0030] When all three drill strings (neither the top nor the bottom) are identified: After drill string Ln passes through the infrared sensor, time Tn is recorded, and drilling operations are performed. However, none of the three drill strings in Ln are identified. At this time, the identification system does not react and does not record any missed readings. But when the next drill string passes through the infrared sensor and time Tm is recorded, the system can determine that none of the three drill strings in Ln have been identified. Therefore, the system uses the drill string assembly table to determine the identities of the three drill strings in Ln, and uses the Ln passage time Tn recorded by the infrared sensor and the time data of the drill strings in Li to calculate the drilling time t of n1 / n2 / n3 in Ln. n1 / t n2 / t n3 ; Calculation method: t n1 = (Tn+Tm) / 2; t n2 =t n1 +(t i2 -t i1 );t n3 =t n1 +(t i3 -t i2 ), where i = n-1, m = n+1; where n is 1, 2, 3…N.

[0031] Preferably, the determination of preventing missed readings during drilling operations includes the following steps:

[0032] When one drill string is not detected:

[0033] If drill string n3 is not identified, the time t recorded by the identified n1 and n2 is used. n1’ and t n2’ The time t for n3 to enter the well was calculated. n3’ And supplement the record; Calculation method: t n3’ =t n2’ -(t n1’ -t n2’ );

[0034] If drill string n2 is not identified, the time t recorded by the identified n1 and n3 is used. n1’ and t n3’ The infeed time t of n2 was calculated. n2’ And supplement the record; Calculation method: t n2’ =(t n1’ +t n3’ ) / 2;

[0035] If drill string n1 is not identified, the time t recorded by the identified n2 and n3 is used. n2’ and t n3’ The time t for n3 to enter the well was calculated. n1’ And supplement the record; Calculation method: t n1’ =tn2’ +(t n2’ -t n3’ );

[0036] When two drill strings, neither the topmost nor the bottommost, are not identified:

[0037] If drill strings n3 and n2 are not identified, the time t recorded by the identified n1 will be used. n1’ Based on the existing data of the next-level drill string and drilling tools, the infeed time t of n3 can be calculated. n3’ and n2 entry time t n2’ And supplement the record; Calculation method: t n3’ =t n1’ -(t m1’ -t m3’ );t n2’ =t n1’ -(t m1’ -t m2’ ); where m = n + 1; n is 1, 2, 3…N;

[0038] If drill string n3 and n1 are not identified, the time t recorded by the identified n2 is used. n2’ Based on the existing data of the next-level drill string and drilling tools, the infeed time t of n3 can be calculated. n3’ and n1 entry time t n1’ And supplement the record; Calculation method: t n3’ =t n2’ -(t m2’ -t m3’ );t n1’ =t n2’ +(t m1’ -t m2’ ); where m = n + 1; n is 1, 2, 3…N;

[0039] If drill strings n2 and n1 are not identified, the time t recorded by the identified n3 is used. n3’ Based on the existing data of the next-level drill string and drilling tools, the infeed time t of n2 is calculated. n2’ and n1 entry time t n1’ And supplement the record; Calculation method: t n2’ =t n3’ +(t m2’ -t m3’ );t n1’ =t n3’ +(t m1’ -t m3’ ); where m = n + 1; n is 1, 2, 3…N;

[0040] When all three drill strings (neither the top nor the bottom) are identified: If none of the three drill strings (n1 / n2 / n3) in Ln are identified during the tripping process, the identification system does not react after Ln is brought to the well and does not record any missed readings. The system records the Ln passage time Tn' and drill string passage data Ln' using infrared sensors. Simultaneously, the system determines that there are missed drill strings in Ln and that all three drill strings were not identified. The system then uses the drill string assembly table to identify the three drill strings in Ln and uses the infrared sensors to record the Lm passage time Tm' and the time data of the drill strings in Lm to calculate the tripping time t of n1 / n2 / n3 in Ln. n1’ / t n2’ / t n3’ ; Calculation method: t n1’ = (Tm'+Tn') / 2; t n2’ =t n1’ +(t m2’ -t m1’ );t n3’ =t n1’ +(t m3’ -t m1’ ); where m = n + 1; n is 1, 2, 3... N.

[0041] Preferably, the special case determination during drilling is as follows: if two or more drill strings at the bottom are not identified during drilling, an infrared sensor is used to record the passage time T1 of the bottom drill string and the passage time T2 of the next bottommost drill string, and the drilling time t of drill strings 11 / 12 / 13 in the bottommost drill string is recorded. 11 / t 12 / t 13 Perform the calculations and record the results; the calculation method is as follows: t 11 = (T1+T2) / 2; t 12 = (T1+T2)*2 / 3; t 13 = (T1+T2)*3 / 4.

[0042] Preferably, the special case determination for tripping out of the drill string is as follows: when tripping out of the drill string, two or more drill strings at the top are not identified. In this case, an infrared sensor is used to record the passage time Tn' of the top drill string and the drilling time t of drill strings n1 / n2 / n3 in the top drill string. n1 ' / t n2 ' / t n3 Perform the calculations and record the results; the calculation method is as follows: t n1 '=Tn'-a;t n2 '=t n1 '+b;t n3 '=t n1 +c; where n' is 1, 2, 3…N; a = 120–240s; b = 20–30s; c = 40–50s.

[0043] Preferably, the joint determination of drilling down / drilling up is as follows: if the same drill string is not identified and read during the drilling down and drilling up identification and reading process, the system records that the RFID tag of the drill string is abnormal and alarms to prompt the drill string to be manually identified and scanned for verification in order to determine whether the RFID tag of the drill string is invalid.

[0044] The beneficial effects of this technical solution are as follows:

[0045] I. The present invention provides a drilling tool anti-misreading and anti-missed reading system. Due to the material and structure of the tag itself, it may fail due to the effects of high temperature, high pressure, vibration and friction during multiple well operations. Due to the complex working environment, the reading and recognition of the tag signal may be affected by personnel, equipment and other factors, resulting in signal reading failure and thus failure. By combining the system's anti-missed reading algorithm with hardware reading, the data of each drilling tool during drilling and tripping operations can be effectively recorded.

[0046] II. The present invention provides a drilling tool anti-misreading and anti-missed reading system in the drilling process, wherein the antenna is divided into four or six equal parts and set on the anti-slip carpet to ensure the recognition effect and prevent missed reading.

[0047] III. The present invention provides a drilling tool misreading and omission prevention system, which uses an infrared sensor combined with a carpet antenna for signal recognition and an anti-leakage data processing algorithm module to judge and analyze the omission of drilling tool information.

[0048] IV. The present invention provides a method for preventing misreading and missing reading of drilling tools during the drilling process. Two infrared sensors combined with a carpet antenna signal recognition and anti-leakage data processing module judge and analyze the missing drilling tool information, and then the anti-leakage data processing module calculates the missing data and supplements the record. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the carpet antenna arrangement in this invention;

[0050] Figure 2 This is a schematic diagram of the built-in antenna arrangement in this invention;

[0051] Figure 3 This refers to the antenna signal deflection angle in this invention;

[0052] Figure 4 This is a schematic diagram of the arrangement of the infrared sensing device derrick in this invention;

[0053] Figure 5 This is a schematic diagram of the arrangement of the first and second infrared sensing devices and the movement of the drill string in this invention (right view of the left thigh of the derrick).

[0054] Figure 6This is a schematic diagram of the drill assembly in this invention. Detailed Implementation

[0055] The present invention will be further described in detail below with reference to embodiments, but the implementation of the present invention is not limited thereto.

[0056] Example 1

[0057] like Figures 1-5 As shown, a drilling tool misreading / missed reading prevention system includes a carpet antenna installed at the wellhead, two infrared sensors installed at the derrick thighs, a reading / writing device, and a leak-proof data algorithm processing module. The carpet antenna and the reading / writing device work together to receive signals from RFID tags on the drill string and send them to the leak-proof data algorithm processing module. The two infrared sensors are used to record the passage time and passage data of each drill string and send them to the leak-proof data algorithm processing module. The leak-proof data algorithm processing module receives information from the carpet antenna and the two infrared sensors and performs leak-proof reading determination during drilling operations, leak-proof reading determination during tripping operations, and determination of special situations during drilling / tripping.

[0058] Example 2

[0059] A drilling tool misreading / missed reading prevention system includes a carpet antenna installed at the wellhead, two infrared sensors installed at the derrick thighs, a reading / writing device, and a leak-proof data algorithm processing module. The carpet antenna and the reading / writing device work together to receive signals from RFID tags on the drill string and send them to the leak-proof data algorithm processing module. The two infrared sensors are used to record the passage time and passage data of each drill string and send them to the leak-proof data algorithm processing module. The leak-proof data algorithm processing module receives information from the carpet antenna and the two infrared sensors and performs leak-proof reading determination during drilling operations, leak-proof reading determination during tripping operations, and determination of special situations during drilling / tripping.

[0060] The carpet-type antenna includes an anti-slip carpet and multiple antennas, which are evenly distributed on the anti-slip carpet. The anti-slip carpet is made of polyurethane material, and the thickness of the anti-slip mat is 20-30mm.

[0061] Among them, multiple antennas are used in the form of three, four, or six.

[0062] The antenna signal has an angular offset, which is 30 to 45°.

[0063] The anti-slip carpet has ripples or floating dots on it.

[0064] The carpet-style antenna differs from the commonly used method of installing antennas at the thigh position of the derrick, and has the following advantages:

[0065] 1) More accurate identification. a. By arranging the reading and identification antennas at the wellhead location in a ring-like, multi-directional manner, the signal reception capability of the drilling tool RFID tags is significantly improved. Although antennas installed on the derrick's thigh can also be arranged in a multi-directional manner, the limitations of the derrick structure and operation cannot meet the requirements for uniform and large-scale deployment. b. In addition, it is not affected by equipment and lines in the environment, effectively reducing signal loss. Antennas installed on the derrick's thigh are subject to obstruction by various moving equipment or lines, leading to signal loss.

[0066] 2) It does not affect personnel operations. The wellhead itself is equipped with anti-slip mats, and this carpet-like antenna meets both operational safety requirements and the function of automated drill string identification. Furthermore, unlike antennas installed on the derrick's thigh area, it allows for seamless identification for operators, without creating external environmental stress.

[0067] 3) Prevent misreading of drill strings in the drill string box. The antenna installed on the derrick thigh requires a stronger signal transmission and reading, which may lead to misreading of other drill strings that do not need to be identified, such as drill strings that are not currently in operation in the drill string box. This will result in signal data errors and affect operational efficiency.

[0068] The two infrared sensors are mounted on the same horizontal plane, with a distance of less than 10 mm between them. These two infrared sensors are designated as the first infrared sensor and the second infrared sensor.

[0069] The infrared sensor includes a transmitter and a receiver.

[0070] Example 3

[0071] This embodiment employs the method for preventing misreading and missed readings using a drilling tool anti-misreading and anti-missed reading system described in Embodiment 2, including the following steps:

[0072] This includes the determination of missing readings during drilling operations, the determination of missing readings during tripping operations, and the determination of special circumstances during drilling / tripping.

[0073] Step 1: Determine whether the drilling tool is being lowered or pulled out using two infrared sensors and a leak-proof data processing module.

[0074] Step 2: The system uses a carpet antenna, two infrared sensors, and a data leak prevention algorithm processing module to determine whether the operation is a leak prevention check during drilling, a leak prevention check during tripping, a special situation check during drilling, a special situation check during tripping, or a combined drilling / tripping check.

[0075] Example 4

[0076] This embodiment employs the method for preventing misreading and missed readings using a drilling tool anti-misreading and anti-missed reading system described in Embodiment 2, including the following steps:

[0077] This includes the determination of missing readings during drilling operations, the determination of missing readings during tripping operations, and the determination of special circumstances during drilling / tripping.

[0078] Step 1: Determine whether the drilling tool is being lowered or pulled out using two infrared sensors and a leak-proof data processing module.

[0079] Step 2: The system uses a carpet antenna, two infrared sensors, and a data leak prevention algorithm processing module to determine whether the operation is a leak prevention check during drilling, a leak prevention check during tripping, a special situation check during drilling, a special situation check during tripping, or a combined drilling / tripping check.

[0080] The drilling tool includes multiple drill strings, and each drill string includes three individual drilling tools.

[0081] In step one, when the drill string passes the first infrared sensor first and then the second infrared sensor, the anti-leakage data algorithm processing module determines that it is a drilling operation; when the drill string passes the second infrared sensor first and then the first infrared sensor, the anti-leakage data algorithm processing module determines that it is a tripping operation.

[0082] In step two, during the drilling operation, after the drill string passes the infrared sensor, the passage time Tn and the passage data Ln (the passage data Ln includes the passage time Tn and which drill string passed) are recorded. After each drill string in the drill string is identified by the carpet antenna, the running times of the three drill strings n1 / n2 / n3 are recorded as tn1 / tn2 / tn3. During the tripping operation, after each drill string in the drill string is identified by the carpet antenna, the running times of each drill string are recorded as tn1' / tn2' / tn3'. After the drill string is tripped and moved into the drill string box, after passing the infrared sensor, the passage time Tn' and the passage data Ln' are recorded; where n' is 1, 2, 3...N.

[0083] The method for preventing missed readings during drilling operations includes the following steps:

[0084] When one drill string is not detected:

[0085] If drill string n1 is not identified, the time t recorded by the identified n2 and n3 is used. n2 and t n3 The time t for n1 to enter the well was calculated. n1 And supplement the record; Calculation method: t n1 =t n2 -(t n3 -t n2 );

[0086] If drill string n2 is not identified, the time t recorded by the identified n1 and n3 is used. n1 and tn3 The infeed time t of n2 was calculated. n2 And supplement the record; Calculation method: t n2 =(t n1 +t n3 ) / 2;

[0087] If drill string n3 is not identified, the time t recorded by the identified n1 and n2 is used. n1 and t n2 The time t for n3 to enter the well was calculated. n3 And supplement the record; Calculation method: t n3 =t n2 +(t n2 -t n1 );

[0088] When two drill strings, neither the topmost nor the bottommost, are not identified:

[0089] If drill strings n1 and n2 are not identified, the time t recorded by the identified n3 is used. n3 Based on the existing data from the previous drill string and drilling tools, calculate the entry times of n1 and n2 and supplement the records; Calculation method: t n1 =t n3 -(t i3 -t i1 );t n2 =t n3 -(t i3 -t i2 ); where i = n-1; n is 1, 2, 3…N;

[0090] If drill strings n1 and n3 are not identified, the time t recorded by the identified n2 is used. n2 Based on the existing data from the previous drill string and drilling tools, calculate the entry times of n1 and n3 and supplement the records; Calculation method: t n1 =t n2 -(t i2 -t i1 );t n3 =t n2 +(t i3 -t i2 ); where i = n-1; n is 1, 2, 3…N;

[0091] If drill strings n2 and n3 are not identified, the time t recorded by the identified n1 will be used. n1 Based on the existing data from the previous drill string and drilling tools, calculate the entry times of n2 and n3 and supplement the records; Calculation method: t n2 =t n1 +(t i2 -t i1 );t n3 =tn1 +(t i3 -t i1 ); where i = n-1; n is 1, 2, 3…N;

[0092] When all three drill strings (neither the top nor the bottom) are identified: After drill string Ln passes through the infrared sensor, time Tn is recorded, and drilling operations are performed. However, none of the three drill strings in Ln are identified. At this time, the identification system does not react and does not record any missed readings. But when the next drill string passes through the infrared sensor and time Tm is recorded, the system can determine that none of the three drill strings in Ln have been identified. Therefore, the system uses the drill string assembly table to determine the identities of the three drill strings in Ln, and uses the Ln passage time Tn recorded by the infrared sensor and the time data of the drill strings in Li to calculate the drilling time t of n1 / n2 / n3 in Ln. n1 / t n2 / t n3 ; Calculation method: t n1 = (Tn+Tm) / 2; t n2 =t n1 +(t i2 -t i1 );t n3 =t n1 +(t i3 -t i2 ), where i = n-1, m = n+1; where n is 1, 2, 3…N.

[0093] The method for preventing missed readings during drilling operations includes the following steps:

[0094] When one drill string is not detected:

[0095] If drill string n3 is not identified, the time t recorded by the identified n1 and n2 is used. n1’ and t n2’ The time t for n3 to enter the well was calculated. n3’ And supplement the record; Calculation method: t n3’ =t n2’ -(t n1’ -t n2’ );

[0096] If drill string n2 is not identified, the time t recorded by the identified n1 and n3 is used. n1’ and t n3’ The infeed time t of n2 was calculated. n2’ And supplement the record; Calculation method: t n2’ =(t n1’ +t n3’ ) / 2;

[0097] If drill string n1 is not identified, the time t recorded by the identified n2 and n3 is used.n2’ and t n3’ The time t for n3 to enter the well was calculated. n1’ And supplement the record; Calculation method: t n1’ =t n2’ +(t n2’ -t n3’ );

[0098] When two drill strings, neither the topmost nor the bottommost, are not identified:

[0099] If drill strings n3 and n2 are not identified, the time t recorded by the identified n1 will be used. n1’ Based on the existing data of the next-level drill string and drilling tools, the infeed time t of n3 can be calculated. n3’ and n2 entry time t n2’ And supplement the record; Calculation method: t n3’ =t n1’ -(t m1’ -t m3’ );t n2’ =t n1’ -(t m1’ -t m2’ ); where m = n + 1; n is 1, 2, 3…N;

[0100] If drill string n3 and n1 are not identified, the time t recorded by the identified n2 is used. n2’ Based on the existing data of the next-level drill string and drilling tools, the infeed time t of n3 can be calculated. n3’ and n1 entry time t n1’ And supplement the record; Calculation method: t n3’ =t n2’ -(t m2’ -t m3’ );t n1’ =t n2’ +(t m1’ -t m2’ ); where m = n + 1; n is 1, 2, 3…N;

[0101] If drill strings n2 and n1 are not identified, the time t recorded by the identified n3 is used. n3’ Based on the existing data of the next-level drill string and drilling tools, the infeed time t of n2 is calculated. n2’ and n1 entry time t n1’ And supplement the record; Calculation method: t n2’ =t n3’ +(t m2’ -t m3’ );t n1’ =t n3’ +(t m1’ -t m3’); where m = n + 1; n is 1, 2, 3…N;

[0102] When all three drill strings (neither the top nor the bottom) are identified: If none of the three drill strings (n1 / n2 / n3) in Ln are identified during the tripping process, the identification system does not react after Ln is brought to the well and does not record any missed readings. The system records the Ln passage time Tn' and drill string passage data Ln' using infrared sensors. Simultaneously, the system determines that there are missed drill strings in Ln and that all three drill strings were not identified. The system then uses the drill string assembly table to identify the three drill strings in Ln and uses the infrared sensors to record the Lm passage time Tm' and the time data of the drill strings in Lm to calculate the tripping time t of n1 / n2 / n3 in Ln. n1’ / t n2’ / t n3’ ; Calculation method: t n1’ = (Tm'+Tn') / 2; t n2’ =t n1’ +(t m2’ -t m1’ );t n3’ =t n1’ +(t m3’ -t m1’ ); where m = n + 1; n is 1, 2, 3... N.

[0103] The special case determination for drilling is as follows: if two or more drill strings at the bottom are not identified during drilling, infrared sensors are used to record the passage time T1 of the bottom drill string and the passage time T2 of the next bottommost drill string, and the drilling time t of drill strings 11 / 12 / 13 in the bottommost drill string is recorded. 11 / t 12 / t 13 Perform the calculations and record the results; the calculation method is as follows: t 11 = (T1+T2) / 2; t 12 = (T1+T2)*2 / 3; t 13 = (T1+T2)*3 / 4.

[0104] The special case determination for tripping drill string is as follows: if two or more drill strings at the top of the drill string are not identified during tripping drill string, an infrared sensor is used to record the passage time Tn' of the top drill string and the drilling time t of drill strings n1 / n2 / n3 in the top drill string. n1 ' / t n2 ' / t n3 Perform the calculations and record the results; the calculation method is as follows: t n1 '=Tn'-a;t n2 '=t n1 '+b;t n3 '=t n1+c; where n' is 1, 2, 3…N; a = 120–240s; b = 20–30s; c = 40–50s.

[0105] The joint determination of drilling down / drilling up is as follows: if the same drilling tool is not identified and read during the drilling down and drilling up identification and reading process, the system records that the RFID tag of the drilling tool is abnormal and alarms to prompt manual identification and scanning verification of the drilling tool to determine whether the RFID tag of the drilling tool is invalid.

[0106] Example 5

[0107] This embodiment employs a drilling tool misreading and omission prevention method described in Embodiment 4, such as... Figure 6 The drill string assembly includes L1 drill string (including X1, X2 and X3 drill string), L2 drill string (including Y1, Y2 and Y3 drill string), L3 drill string (including Z1, Z2 and Z3 drill string) and L4 drill string (including M1, M2 and M3 drill string).

[0108] Design of an algorithm for preventing missed readings during drilling operations

[0109] Taking L1 drill string running as an example:

[0110] Once the L1 drill string passes the infrared sensor (due to the different sequences of the two sets of infrared sensors, the system automatically identifies the current operation as a drilling operation), the time T1 and the drill string passage data L1 are recorded, and then the drilling operation is executed. During the drilling process, after all three drill strings X1 / X2 / X3 in L1 are identified by the carpet antenna, the running times of the three drill strings X1 / X2 / X3 are recorded, respectively as t. X1 / t X2 / t X3 .

[0111] When the drill string passes the first infrared sensor first and then the second infrared sensor, the system determines that it is a drilling operation; when the drill string passes the second infrared sensor first and then the first infrared sensor, the system determines that it is a tripping operation.

[0112] Taking L2 drill string running-down as an example:

[0113] When drill string L2 passes through the infrared sensor, the system records the time T2 and the drill string passage data L2, and then executes the drilling operation. However, if any one or two of Y1 / Y2 / Y3 in L2 are not identified (missed reading), the identification system does not react after L2 is run into the well (it cannot determine whether there is a missed reading) and does not record the missed reading. When L3 passes through the infrared sensor (the system knows that L2 was not fully identified), the system can determine that there is a missed drill string in L2, and thus use the drill strings that have been identified in L2 to deduce the unidentified drill string, while simultaneously recording the running time.

[0114] If drill string Y1 is not identified, the time t recorded by the identified Y2 and Y3 is used. Y2 and t Y3 The time t for Y1 to enter the well was calculated. Y1 And supplement the records.

[0115] Calculation method: t Y1 =t Y2 -(t Y3 -t Y2 ).

[0116] If drill string Y2 is not identified, the time t recorded by the identified Y1 and Y3 will be used. Y1 and t Y3 The time t for Y2 to enter the well was calculated. Y2 And supplement the records.

[0117] Calculation method: t Y2 =(t Y1 +t Y3 ) / 2.

[0118] 3) If drill string Y3 is not identified, use the time t recorded by the identified Y1 and Y2. Y1 and t Y2 The time t for Y3 to enter the well was calculated. Y3 And supplement the records.

[0119] Calculation method: t Y3 =t Y2 +(t Y2 -t Y1 ).

[0120] If drill strings Y1 and Y2 are not identified, the time t recorded by the identified Y3 is used. Y3 Based on the existing data of the L1 drill string and drill string, the entry times of Y1 and Y2 were calculated and supplemented.

[0121] Calculation method: t Y1 =t Y3 -(t X3 -t X1 );t Y2 =t Y3 -(t X3 -t X2 ).

[0122] If drill strings Y1 and Y3 are not identified, the time t recorded by the identified Y2 will be used. Y2 Based on the existing data of the L1 drill string and drill string, the entry times of Y1 and Y3 were calculated and supplemented.

[0123] Calculation method: t Y1 =t Y2-(t X2 -t X1 );t Y3 =t Y2 +(t X3 -t X2 ).

[0124] If drill strings Y2 and Y3 are not identified, the time t recorded by the identified Y1 will be used. Y1 Based on the existing data of the L1 drill string and drill string, the entry times of Y2 and Y3 were calculated and supplemented.

[0125] Calculation method: t Y2 =t Y1 +(t X2 -t X1 );t Y3 =t Y1 +(t X3 -t X1 ).

[0126] Taking L3 drill string running as an example:

[0127] When drill string L3 passes through the infrared sensor, time T3 is recorded, and drilling operations are initiated. However, none of the three drill strings in L3 are identified, and the identification system does not react or record any missed readings. But when drill string L4 passes through the infrared sensor and time T4 is recorded, the system can determine that none of the three drill strings in L3 have been identified. Therefore, the system uses the drill string assembly table to identify the three drill strings in L3 and, using the time T3 of L3's infrared sensor passage and the time data of the drill strings in L2, calculates the drilling time t for Z1 / Z2 / Z3 in L3. Z1 / t Z2 / t Z3 .

[0128] Calculation method: t Z1 = (T3+T4) / 2; t Z2 =t Z1 +(t Y2 -t Y1 );t Z3 =t Z1 +(t Y3 -t Y2 ).

[0129] Design of an algorithm for preventing missed readings during drilling operations

[0130] Taking L4 drill string tripping as an example:

[0131] During the tripping process of drill string L4, once all three drill strings M1 / M2 / M3 in L4 are identified by the carpet antenna, the time of their arrival at the well is recorded as t. M1’ / t M2’ / tM3’ When the drill string is pulled out of the drill string and moved into the drill string box, it is detected by infrared sensors (because the two sets of infrared sensors are used in different sequences, the system automatically identifies the current operation as a tripping operation), and the time T4' and the drill string passage data L4' are recorded.

[0132] When the drill string passes the first infrared sensor first and then the second infrared sensor, the system determines that it is a drilling operation; when the drill string passes the second infrared sensor first and then the first infrared sensor, the system determines that it is a tripping operation.

[0133] Taking the L3 drill string tripping as an example:

[0134] If any one or two drill strings (Z1 / Z2 / Z3) in L3 are not detected (missed reading) during the tripping process of drill string L3, the identification system will not react after L3 is brought to the well and will not record the missed reading. When L3 passes through the infrared sensor, the system records the time T3' and the drill string passage data L3'. At the same time, the system can determine that there is a missed drill string in L3, and then use the drill strings that have been identified in L3 to deduce the unidentified drill string, while recording the tripping time.

[0135] If drill string Z3 is not identified, the time t recorded by the identified Z1 and Z2 will be used. Z1’ and t Z2’ The drilling time t of Z1 was calculated. Z3’ And supplement the records.

[0136] Calculation method: t Z3’ =t Z2’ -(t Z1’ -t Z2’ ).

[0137] If drill string Z2 is not identified, the time t recorded by the identified Z1 and Z3 will be used. Z1’ and t Z3’ The drilling time t of Z2 was calculated. Z2’ And supplement the records.

[0138] Calculation method: t Z2’ =(t Z1’ +t Z3’ ) / 2.

[0139] If drill string Z1 is not identified, the time t recorded by the identified Z2 and Z3 is used. Z2’ and t Z3’ The time t for Y3 to enter the well was calculated. Z1’ And supplement the records.

[0140] Calculation method: t Z1’ =t Z2’ +(t Z2’ -t Z3’ ).

[0141] If drill strings Z3 and Z2 are not identified, the time t recorded by the identified Z1 will be used. Z1’ Based on the existing data of the L4 drill string, the drilling time t of Z3 was calculated. Z3’ and Z2 entry time t Z2’ And supplement the records.

[0142] Calculation method: t Z3’ =t Z1’ -(t M1’ -t M3’ );t Z2’ =t Z1’ -(t M1’ -t M2’ ).

[0143] If drill strings Z3 and Z1 are not identified, the time t recorded by the identified Z2 will be used. Z2’ Based on the existing data of the L4 drill string, the drilling time t of Z3 was calculated. Z3’ and Z1 entry time t Z1’ And supplement the records.

[0144] Calculation method: t Z3’ =t Z2’ -(t M2’ -t M3’ );t Z1’ =t Z2’ +(t M1’ -t M2’ ).

[0145] If drill strings Z2 and Z1 are not identified, the time t recorded by the identified Z3 is used. Z3’ Based on the existing data of the L4 drill string, the Z2 entry time t was calculated. Z2’ and Z1 entry time t Z1’ And supplement the records.

[0146] Calculation method: t Z2’ =t Z3’ +(t M2’ -t M3’ );t Z1’ =t Z3’ +(t M1’ -t M3’ ).

[0147] Taking L2 drill string tripping as an example:

[0148] During the tripping process of drill string L2, none of the three drill strings Y1 / Y2 / Y3 in L2 were identified. After L2 was brought to the well, the identification system did not react and did not record any missed reads. When L2 passes through the infrared sensor, the system records the time T2' and the drill string passage data L2'. Simultaneously, the system can determine that there are missed drill strings in L2 and that none of the three drill strings were identified. Therefore, the system uses the drill string assembly table to determine the identities of the three drill strings in L2, and uses the time T3' of L3 passing through the infrared sensor and the time data of the drill strings in L3 to calculate the tripping time t of Y1 / Y2 / Y3 in L2. Y1’ / t Y2’ / t Y3’ .

[0149] Calculation method: t Y1’ = (T3'+T2') / 2; t Y2’ =t Y1’ +(t Z2’ -t Z1’ );t Y3’ =t Y1’ +(t Z3’ -t Z1’ ).

[0150] Special Circumstances for Drilling Down / Take-out:

[0151] When drilling begins, if two or more drill strings at the bottom of L1 (e.g., L1 in the diagram) are not identified, there is no data from the previous drill string to reference. Therefore, infrared sensors are used to record the drilling time t of drill strings X1 / X2 / X3 in L1. X1 / t X2 / t X3 Perform the calculations and record the results.

[0152] Calculation method: t X1 = (T1+T2) / 2; t X2 = (T1+T2)*2 / 3; t X3 = (T1+T2)*3 / 4.

[0153] When pulling out of the drill string, if two or more drill strings at the top (e.g., L4 in the diagram, assuming there are only four strings) are not identified, there is no data from the previous drill string to reference. Therefore, infrared sensing is used to record time T4' to track the drilling time t of drill strings M1 / M2 / M3 in L4. M1’ / t M2’ / t M3’ Perform the calculations and record the results.

[0154] Calculation method: t M1’ =T4'-180s; t M2’ =t M1’ +25s; t M3’ =tM1’ +45s.

[0155] Joint determination of drilling start / tripping: If the same drill string is not identified and read during the drilling start and tripping identification and reading process, the system will automatically record it and issue an alarm prompting the drill string to be manually identified and scanned for verification in order to determine whether the drill string RFID tag is invalid.

[0156] Beneficial effects of the anti-missed read system algorithm:

[0157] The main reasons for missed reads of special RFID tags on drilling tools are:

[0158] Due to its material and structure, the tag itself is subject to high temperature, high pressure, vibration, friction and other factors during multiple well operations, which may cause it to fail.

[0159] Due to the complex operating environment, the reading and recognition of tag signals may be affected by personnel, equipment and other factors, resulting in signal reading failure and thus failure.

[0160] By combining the system's anti-missed reading algorithm with hardware reading, data recording for each drill string during drilling and tripping operations can be effectively performed.

[0161] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A drilling tool misreading and omission prevention system for drilling processes, characterized in that: The system includes a carpet antenna mounted at the wellhead, two infrared sensors mounted on the derrick's upper legs, a read / write device, and a leak-proof data algorithm processing module. The carpet antenna and read / write device work together to receive signals from RFID tags on the drill string and transmit them to the leak-proof data algorithm processing module. The two infrared sensors are used to record the passage time and data of each drill string and transmit this data to the leak-proof data algorithm processing module. The leak-proof data algorithm processing module receives information from the carpet antenna and the two infrared sensors and performs leak-proof reading judgments during drilling operations, tripping operations, and special situations during drilling / tripping.

2. The drilling tool misreading and omission prevention system according to claim 1, characterized in that: The carpet-type antenna includes an anti-slip carpet and multiple antennas, which are evenly distributed on the anti-slip carpet.

3. A drilling tool misreading and omission prevention system according to claim 2, characterized in that: Multiple antennas can be used in the form of three, four, or six.

4. A drilling tool misreading and omission prevention system according to claim 3, characterized in that: The antenna signal has an angular offset, which is 30 to 45°.

5. A drilling tool misreading and omission prevention system according to claim 4, characterized in that: The anti-slip carpet has ripples or raised dots.

6. A drilling tool misreading and omission prevention system according to claim 5, characterized in that: Two infrared sensors are installed on the same horizontal plane, and the distance between the two infrared sensors is less than 10mm.

7. A drilling tool misreading and omission prevention system according to claim 6, characterized in that: The infrared sensor includes a transmitter and a receiver.

8. A method for preventing misreading and missed reading of drilling tools according to any one of claims 1-7, comprising the following steps: Step 1: Determine whether the drill string is being lowered or pulled out using two infrared sensors and a leak-proof data processing module. Step 2: The system uses a carpet antenna, two infrared sensors, and a data leak prevention algorithm processing module to determine whether the operation is a leak prevention check during drilling, a leak prevention check during tripping, a special situation check during drilling, a special situation check during tripping, or a combined drilling / tripping check.

9. A method for preventing misreading or missed readings of drilling tools during the drilling process according to claim 8, characterized in that: The drilling tool includes multiple drill strings, and each drill string includes 3 individual drill tools.

10. A method for preventing misreading or missed reading of drilling tools during the drilling process according to claim 9, characterized in that: In step one, when the drill string passes the first infrared sensor first and then the second infrared sensor, the anti-leakage data algorithm processing module determines that it is a drilling operation; when the drill string passes the second infrared sensor first and then the first infrared sensor, the anti-leakage data algorithm processing module determines that it is a tripping operation.

11. A method for preventing misreading or missed reading of drilling tools during the drilling process according to claim 10, characterized in that: In step two, during the drilling operation, after the drill string passes the infrared sensor, the passage time Tn and the passage data Ln of the drill string are recorded. After each drill string is identified by the carpet antenna, the running times of the three drill strings n1 / n2 / n3 are recorded, respectively t n1 / t n2 / t n3 During tripping operations, each drill string element is identified by the carpet antenna, and the time each element is lowered into the well is recorded as t. n1’ / t n2’ / t n3’ When the drill string is pulled out of the drill string and moved into the drill string box, it passes through an infrared sensor and records the drill string passage time Tn' and drill string passage data Ln'; where n is 1, 2, 3...N; n' is 1, 2, 3...N.

12. A method for preventing misreading or missed reading of drilling tools during the drilling process according to claim 11, characterized in that: The method for preventing missed readings during drilling operations includes the following steps: When one drill string is not detected: If drill string n1 is not identified, the time t recorded by the identified n2 and n3 is used. n2 and t n3 The time t for n1 to enter the well was calculated. n1 And supplement the record; Calculation method: t n1 =t n2 -(t n3 -t n2 ); If drill string n2 is not identified, the time t recorded by the identified n1 and n3 is used. n1 and t n3 The infeed time t of n2 was calculated. n2 And supplement the record; Calculation method: t n2 =(t n1 +t n3 ) / 2; If drill string n3 is not identified, the time t recorded by the identified n1 and n2 is used. n1 and t n2 The time t for n3 to enter the well was calculated. n3 And supplement the record; Calculation method: t n3 =t n2 +(t n2 -t n1 ); When two drill strings, neither the topmost nor the bottommost, are not identified: If drill strings n1 and n2 are not identified, the time t recorded by the identified n3 is used. n3 Based on the existing data from the previous drill string and drilling tools, calculate the entry times of n1 and n2 and supplement the records; Calculation method: t n1 =t n3 -(t i3 -t i1 );t n2 =t n3 -(t i3 -t i2 ); where i = n-1; n is 1, 2, 3…N; If drill strings n1 and n3 are not identified, the time t recorded by the identified n2 is used. n2 Based on the existing data from the previous drill string and drilling tools, calculate the entry times of n1 and n3 and supplement the records; Calculation method: t n1 =t n2 -(t i2 -t i1 );t n3 =t n2 +(t i3 -t i2 ); where i = n-1; n is 1, 2, 3…N; If drill strings n2 and n3 are not identified, the time t recorded by the identified n1 will be used. n1 Based on the existing data from the previous drill string and drilling tools, calculate the entry times of n2 and n3 and supplement the records; Calculation method: t n2 =t n1 +(t i2 -t i1 );t n3 =t n1 +(t i3 -t i1 ); where i = n-1; n is 1, 2, 3…N; When all three drill strings (neither the top nor the bottom) are identified: After drill string Ln passes through the infrared sensor, time Tn is recorded, and drilling operations are performed. However, none of the three drill strings in Ln are identified. At this time, the identification system does not react and does not record any missed readings. But when the next drill string passes through the infrared sensor and time Tm is recorded, the system can determine that none of the three drill strings in Ln have been identified. Therefore, the system uses the drill string assembly table to determine the identities of the three drill strings in Ln, and uses the Ln passage time Tn recorded by the infrared sensor and the time data of the drill strings in Li to calculate the drilling time t of n1 / n2 / n3 in Ln. n1 / t n2 / t n3 ; Calculation method: t n1 = (Tn+Tm) / 2; t n2 =t n1 +(t i2 -t i1 );t n3 =t n1 +(t i3 -t i2 ), where i = n-1, m = n+1; where n is 1, 2, 3…N.

13. A method for preventing misreading or missed reading of drilling tools during the drilling process according to claim 12, characterized in that: The method for preventing missed readings during drilling operations includes the following steps: When one drill string is not detected: If drill string n3 is not identified, the time t recorded by the identified n1 and n2 is used. n1’ and t n2’ The time t for n3 to enter the well was calculated. n3’ And supplement the record; Calculation method: t n3’ =t n2’ -(t n1’ -t n2’ ); If drill string n2 is not identified, the time t recorded by the identified n1 and n3 is used. n1’ and t n3’ The infeed time t of n2 was calculated. n2’ And supplement the record; Calculation method: t n2’ =(t n1’ +t n3’ ) / 2; If drill string n1 is not identified, the time t recorded by the identified n2 and n3 is used. n2’ and t n3’ The time t for n3 to enter the well was calculated. n1’ And supplement the record; Calculation method: t n1’ =t n2’ +(t n2’ -t n3’ ); When two drill strings, neither the topmost nor the bottommost, are not identified: If drill strings n3 and n2 are not identified, the time t recorded by the identified n1 will be used. n1’ Based on the existing data of the next-level drill string and drilling tools, the infeed time t of n3 can be calculated. n3’ and n2 entry time t n2’ And supplement the record; Calculation method: t n3’ =t n1’ -(t m1’ -t m3’ );t n2’ =t n1’ -(t m1’ -t m2’ ); where m = n + 1; n is 1, 2, 3…N; If drill string n3 and n1 are not identified, the time t recorded by the identified n2 is used. n2’ Based on the existing data of the next-level drill string and drilling tools, the infeed time t of n3 can be calculated. n3’ and n1 entry time t n1’ And supplement the record; Calculation method: t n3’ =t n2’ -(t m2’ -t m3’ );t n1’ =t n2’ +(t m1’ -t m2’ ); where m = n + 1; n is 1, 2, 3…N; If drill strings n2 and n1 are not identified, the time t recorded by the identified n3 is used. n3’ Based on the existing data of the next-level drill string and drilling tools, the infeed time t of n2 is calculated. n2’ and n1 entry time t n1’ And supplement the record; Calculation method: t n2’ =t n3’ +(t m2’ -t m3’ );t n1’ =t n3’ +(t m1’ -t m3’ ); where m = n + 1; n is 1, 2, 3…N; When all three drill strings (neither the top nor the bottom) are identified: If none of the three drill strings (n1 / n2 / n3) in Ln are identified during the tripping process, the identification system does not react after Ln is brought to the well and does not record any missed readings. The system records the Ln passage time Tn' and drill string passage data Ln' using infrared sensors. Simultaneously, the system determines that there are missed drill strings in Ln and that all three drill strings were not identified. The system then uses the drill string assembly table to identify the three drill strings in Ln and uses the infrared sensors to record the Lm passage time Tm' and the time data of the drill strings in Lm to calculate the tripping time t of n1 / n2 / n3 in Ln. n1’ / t n2’ / t n3’ ; Calculation method: t n1’ = (Tm'+Tn') / 2; t n2’ =t n1’ +(t m2’ -t m1’ );t n3’ =t n1’ +(t m3’ -t m1’ ); where m = n + 1; n is 1, 2, 3... N.

14. A method for preventing misreading or missed reading of drilling tools during the drilling process according to claim 13, characterized in that: The special case determination for drilling is as follows: if two or more drill strings at the bottom are not identified during drilling, infrared sensors are used to record the passage time T1 of the bottommost drill string and the passage time T2 of the next bottommost drill string, and the drilling time t of drill strings 11 / 12 / 13 in the bottommost drill string is recorded. 11 / t 12 / t 13 Perform the calculations and record the results; the calculation method is as follows: t 11 = (T1+T2) / 2; t 12 = (T1+T2)*2 / 3; t 13 = (T1+T2)*3 / 4.

15. A method for preventing misreading or missed reading of drilling tools during the drilling process according to claim 14, characterized in that: The special case determination for tripping drill string is as follows: if two or more drill strings at the top of the drill string are not identified during tripping drill string, an infrared sensor is used to record the passage time Tn' of the top drill string and the drilling time t of drill strings n1 / n2 / n3 in the top drill string. n1 ' / t n2 ' / t n3 Perform the calculations and record the results; the calculation method is as follows: t n1 '=Tn'-a;t n2 '=t n1 '+b;t n3 '=t n1 +c; where n' is 1, 2, 3…N; a = 120–240s; b = 20–30s; c = 40–50s.

16. A method for preventing misreading or missed reading of drilling tools during the drilling process according to claim 15, characterized in that: The joint determination of drilling down / tripping out is as follows: if the same drilling tool is not identified and read during the drilling down and tripping out identification and reading process, the system records that the RFID tag of the drilling tool is abnormal and alarms to prompt manual identification and scanning verification of the drilling tool to determine whether the RFID tag of the drilling tool is invalid.

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