System and method for intelligently recognizing and correcting drilling track of drill bit

Abstract

The invention discloses a system and a method for intelligently recognizing and correcting a drilling track of a drill bit, and relates to the technical field of geological prospecting, the method comprises the following steps: acquiring a drilling design track to generate control parameters, inputting the control parameters into drilling equipment, and performing drilling construction by the drilling equipment according to the set control parameters; setting a correction number; the actual drilling track of the drilling equipment is obtained, and the current offset parameter of a drill bit is determined through a track recognition algorithm; based on the current actual track and the drilling design track, a corrected fitting drilling track is designed in a fitting mode; and fitting and updating drilling design trajectory data based on the offset parameter of the drill bit and the fitting drilling trajectory. The method has the advantages that the correlation influence relation between the facing angle of the drill bit and the geological environment factors is quantified in a real-time fitting analysis mode, the pre-design difficulty of the drilling track is lowered, meanwhile, the actual drilling track advances according to the preset track, and then the safety and quality of drilling construction are effectively guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of geological exploration, and in particular to a system and method for intelligently identifying and correcting a drill bit drilling trajectory. Background Art

[0002] Coal mine safety production places increasingly higher demands on drilling efficiency and drilling trajectory during underground coal mine construction. Directional drilling technology has the advantages of fast drilling speed, high directional accuracy, and "one hole with multiple branches". It has become an effective technical means for high-yield and high-efficiency underground coal mine drilling construction, and is widely used in coal mine gas control, geological exploration and other fields.

[0003] In the process of directional drilling, measurement while drilling technology has gradually matured, but there is still a lack of effective means to control the drilling trajectory. Since the drilling trajectory is easily affected by factors such as rock geological conditions, coal seam distribution, and drill pipe gravity, the influence trend of the tool face angle on the inclination and azimuth is relatively easy to obtain, but the quantitative relationship between them is still difficult to determine. The current drilling trajectory control is mostly carried out based on manual experience, which is highly empirical and uncertain. The lack of experience of technicians during the construction process often causes the actual drilling trajectory to deviate from the predetermined trajectory, which in turn affects the safety and quality of the drilling construction, and even causes accidents such as buried drilling and hole collapse, resulting in significant economic losses. Summary of the invention

[0004] In order to solve the above-mentioned technical problems, a system and method for intelligent identification and correction of drill bit drilling trajectory is provided. This technical solution solves the above-mentioned problem that the actual drilling trajectory deviates from the predetermined trajectory, thereby affecting the safety and quality of the drilling construction, and even causing accidents such as buried drilling and collapse in the hole, resulting in significant economic losses.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is: A method for intelligently identifying and correcting a drilling trajectory of a drill bit, comprising: Obtaining a designed drilling trajectory, and setting a number of monitoring points on the designed drilling trajectory based on the drilling depth; Generate control parameters based on drilling design trajectory data and input them into the drilling equipment, and the drilling equipment performs drilling construction according to the set control parameters; Set a correction amount; Acquire the actual drilling trajectory of the drilling equipment, and when the single actual drilling trajectory of the drilling equipment includes the corrected number of monitoring points, use the trajectory recognition algorithm to determine the current offset parameter of the drill bit; Based on the current actual trajectory and the drilling design trajectory, a fitting drilling trajectory after fitting design correction is performed; The drilling design trajectory data is updated by fitting based on the offset parameters of the drill bit and the fitted drilling trajectory.

[0006] Preferably, the trajectory recognition algorithm specifically includes: A plane rectangular coordinate system is established with the initial drilling point of the drilling equipment as the coordinate origin, the drilling depth as the x-axis, and the horizontal plane as the y-axis; Draw the designed drilling trajectory and the actual drilling trajectory in the plane rectangular coordinate system respectively; At least one known function is called to fit the designed drilling trajectory and the actual drilling trajectory respectively, so as to obtain the designed drilling trajectory function and the actual drilling trajectory function; Determine the x-coordinates of all monitoring points included in the current single actual drilling trajectory; Based on the drilling design trajectory function and the actual drilling trajectory function, the current offset parameter of the drill bit is calculated through the offset calculation formula; The offset calculation formula is specifically: In the formula, is the current offset parameter of the drill bit, is the set correction quantity, is the derivative of the actual drilling trajectory function, is the derivative of the drilling design trajectory function, is the x-coordinate of the ith monitoring point.

[0007] Preferably, calling at least one known function to fit the designed drilling trajectory and the actual drilling trajectory specifically includes: Divide all monitoring points included in the current single actual drilling trajectory into sample points and verification points; Based on the coordinates of the sample points on the designed drilling trajectory and / or the actual drilling trajectory, calling at least one known sample function to perform curve fitting; and calculating the regression coefficient of determination of each sample function based on the verification points on the drilling design trajectory and / or the actual drilling trajectory, and determining the sample function with the smallest regression coefficient of determination as the drilling design trajectory function and / or the actual drilling trajectory function; The calculation formula of the regression determination coefficient is: In the formula, is the regression determination coefficient; RSS is the residual sum of squares of the sample function; TSS is the total sum of squares of the sample function.

[0008] Preferably, the fitting drilling trajectory after fitting design correction based on the current actual trajectory and the drilling design trajectory specifically includes: Determine the end point of the current actual drilling trajectory; Determine the maximum correction slope of the drilling equipment, take the end point of the actual drilling trajectory as the correction starting point, make a correction ray with the maximum correction slope of the drilling equipment as the slope, and record the intersection of the ray and the drilling design trajectory as the correction end point; The drilling design trajectory between the correction starting point and the correction end point is replaced by the correction ray to obtain the corrected fitting drilling trajectory.

[0009] Preferably, the method for determining the maximum correction slope of the drilling equipment is: Based on the equipment performance of the drilling equipment, determining the maximum deviation slope of the drilling equipment during the drilling process; Calculate the maximum correction slope of the drilling equipment based on the maximum deviation slope of the drilling equipment during the drilling process and the current deviation parameter of the drill bit; The calculation formula of the maximum correction slope is: In the formula, is the maximum correction slope of the drilling equipment, is the maximum offset slope during drilling.

[0010] Preferably, the updating of the drilling design trajectory data by fitting based on the offset parameter of the drill bit and the fitting drilling trajectory specifically includes: Determine the coordinate point of the end point of the current actual drilling trajectory; Calling at least one known function to fit the corrected fitting drilling trajectory to obtain a fitting drilling trajectory function; Based on the fitted drilling trajectory function, the current offset parameters of the drill bit and the coordinate points of the end points of the current actual drilling trajectory, an updated drilling design trajectory function is generated through a trajectory generation model; An updated drilling design trajectory function is made in a plane rectangular coordinate system to obtain an updated drilling design trajectory; The trajectory generation model is specifically: In the formula, Design trajectory function for updated drilling, is the derivative function of the fitting drilling trajectory function, is the actual drilling trajectory function, which is the x-coordinate of the end point of the current actual drilling trajectory.

[0011] Furthermore, a system for intelligently identifying and correcting a drilling trajectory of a drill bit is proposed, which is used to implement the above-mentioned method for intelligently identifying and correcting a drilling trajectory of a drill bit, comprising: A control module, wherein the control module is used to obtain a drilling design trajectory, set a number of monitoring points on the drilling design trajectory based on the drilling depth, generate control parameters based on the drilling design trajectory data, and input the control parameters into the drilling equipment, so that the drilling equipment performs drilling construction according to the set control parameters; A trajectory monitoring module, wherein the trajectory monitoring module is used to obtain an actual drilling trajectory of the drilling device, and when a single actual drilling trajectory of the drilling device includes a corrected number of monitoring points, a trajectory recognition algorithm is used to determine a current offset parameter of the drill bit; A correction module is electrically connected to the control module and the trajectory monitoring module, and is used to set a correction amount, fit the corrected fitting drilling trajectory based on the current actual trajectory and the drilling design trajectory, and fit and update the drilling design trajectory data based on the offset parameters of the drill bit and the fitting drilling trajectory, and feed back the updated drilling design trajectory data to the control module.

[0012] Optionally, the trajectory monitoring module includes: A trajectory monitoring unit, wherein the trajectory monitoring unit establishes a plane rectangular coordinate system with the initial drilling point of the drilling equipment as the coordinate origin, the drilling depth as the x-axis, and the horizontal plane as the y-axis, and respectively makes a drilling design trajectory and an actual drilling trajectory in the plane rectangular coordinate system; A fitting unit, the fitting unit is used to call at least one known function to fit the drilling design trajectory and the actual drilling trajectory respectively, to obtain the drilling design trajectory function and the actual drilling trajectory function; The offset calculation unit is used to determine the x-coordinates of all monitoring points included in the current single actual drilling trajectory, and calculate the current offset parameters of the drill bit through the offset calculation formula based on the drilling design trajectory function and the actual drilling trajectory function.

[0013] Optionally, the correction module includes: A trajectory correction unit, the trajectory correction unit is used to fit the drilling trajectory after the design correction based on the current actual trajectory and the drilling design trajectory; The drilling correction unit is used to fit and update the drilling design trajectory data based on the offset parameters of the drill bit and the fitted drilling trajectory, and feed back the updated drilling design trajectory data to the control module.

[0014] Furthermore, a computer-readable storage medium is proposed, on which a computer-readable program is stored. When the computer-readable program is called, the method for intelligently identifying and correcting the drilling trajectory of a drill bit as described above is executed.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention proposes a solution for intelligent identification and correction of drilling trajectory of a drill bit. The solution performs real-time analysis based on the actual influence value of the facing angle of the drill bit of the drilling equipment caused by the influence of factors such as rock geological conditions, coal seam distribution, and drill rod gravity during the actual drilling process of the drill bit, and designs monitoring points to match the correction quantity to divide the drilling trajectory into a number of drilling correction sections. Based on the actual offset trajectory of each drilling correction section and the offset parameters of the drill bit, a fitting drilling trajectory that restores the drilling progress to the drilling design trajectory and updated drilling design trajectory data that makes the actual drilling trajectory fit the fitting drilling trajectory are dynamically generated. Since the updated drilling design trajectory data has been pre-added with the actual influence value correction of the facing angle of the drill bit for the environment, the control parameters generated based on the updated drilling design trajectory data can enable the drilling equipment to perform drilling construction according to the drilling trajectory that fits the fitting drilling trajectory, so that the actual drilling trajectory can be realized to move according to the predetermined trajectory, thereby effectively ensuring the safety and quality of the drilling construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a flow chart of the intelligent identification and correction method for the drill bit drilling trajectory proposed in this scheme; Figure 2 It is a flow chart of the trajectory recognition algorithm in this scheme; Figure 3 A flow chart of a method for calling at least one known function to fit a designed drilling trajectory and an actual drilling trajectory in this solution; Figure 4 A flow chart of the method for fitting drilling trajectory after correction for fitting design in this scheme; Figure 5 It is a flow chart of a method for determining the maximum correction slope of the drilling equipment in this scheme; Figure 6 A flow chart of a method for updating drilling design trajectory data for fitting in this scheme; Figure 7 This is the structural block diagram of the intelligent identification and correction system for drill bit drilling trajectory proposed in this scheme; Figure 8 This is a schematic diagram of the computer-readable storage medium structure in this solution. DETAILED DESCRIPTION

[0017] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0018] Reference Figure 1 As shown, a method for intelligently identifying and correcting a drilling trajectory of a drill bit comprises: Obtaining a designed drilling trajectory, and setting a number of monitoring points on the designed drilling trajectory based on the drilling depth; Generate control parameters based on drilling design trajectory data and input them into the drilling equipment, and the drilling equipment performs drilling construction according to the set control parameters; Set a correction amount; Acquire the actual drilling trajectory of the drilling equipment, and when the single actual drilling trajectory of the drilling equipment includes the corrected number of monitoring points, use the trajectory recognition algorithm to determine the current offset parameter of the drill bit; Based on the current actual trajectory and the drilling design trajectory, a fitting drilling trajectory after fitting design correction is performed; The drilling design trajectory data is updated by fitting based on the offset parameters of the drill bit and the fitted drilling trajectory.

[0019] This solution is based on real-time analysis of the actual impact value of the drill bit's facing angle of the drilling equipment caused by factors such as rock geological conditions, coal seam distribution, and drill rod gravity during the actual drilling process, and designs monitoring points to match the number of corrections to divide the drilling trajectory into several drilling correction segments. Based on the actual offset trajectory of each drilling correction segment and the offset parameters of the drill bit, a fitting drilling trajectory that restores the drilling progress to the drilling design trajectory and updated drilling design trajectory data that makes the actual drilling trajectory fit the fitting drilling trajectory are dynamically generated.

[0020] Reference Figure 2 As shown, the trajectory recognition algorithm specifically includes: A plane rectangular coordinate system is established with the initial drilling point of the drilling equipment as the coordinate origin, the drilling depth as the x-axis, and the horizontal plane as the y-axis; Draw the designed drilling trajectory and the actual drilling trajectory in the plane rectangular coordinate system respectively; At least one known function is called to fit the designed drilling trajectory and the actual drilling trajectory respectively, so as to obtain the designed drilling trajectory function and the actual drilling trajectory function; Determine the x-coordinates of all monitoring points included in the current single actual drilling trajectory; Based on the drilling design trajectory function and the actual drilling trajectory function, the current offset parameter of the drill bit is calculated through the offset calculation formula; The specific offset calculation formula is: In the formula, is the current offset parameter of the drill bit, is the set correction quantity, is the derivative of the actual drilling trajectory function, is the derivative of the drilling design trajectory function, is the x-coordinate of the ith monitoring point.

[0021] Reference Figure 3As shown, calling at least one known function to fit the designed drilling trajectory and the actual drilling trajectory specifically includes: Divide all monitoring points included in the current single actual drilling trajectory into sample points and verification points; Based on the coordinates of the sample points on the designed drilling trajectory and / or the actual drilling trajectory, calling at least one known sample function to perform curve fitting; and calculating the regression coefficient of determination of each sample function based on the verification points on the drilling design trajectory and / or the actual drilling trajectory, and determining the sample function with the smallest regression coefficient of determination as the drilling design trajectory function and / or the actual drilling trajectory function; The calculation formula for the regression determination coefficient is: In the formula, is the regression determination coefficient; RSS is the residual sum of squares of the sample function; TSS is the total sum of squares of the sample function.

[0022] During the actual drilling process, the facing angle of the drill bit is easily affected by factors such as the geological conditions of the rock formation, the distribution of the coal seam, and the gravity of the drill rod, and the quantitative influence relationship between the facing angle of the drill bit and these environmental factors is difficult to determine. Therefore, in this scheme, a real-time analysis method is adopted to calculate the current offset parameters of the drill bit caused by the environmental factors of different rock formations, and the offset angle of the drilling trajectory caused by the deviation of the facing angle of the drill bit under different environmental factors is obtained, thereby quantifying the relevant influence relationship between the facing angle of the drill bit and the geological environmental factors.

[0023] Reference Figure 4 As shown, based on the current actual trajectory and the drilling design trajectory, the fitted drilling trajectory after the fitting design correction specifically includes: Determine the end point of the current actual drilling trajectory; Determine the maximum correction slope of the drilling equipment, take the end point of the actual drilling trajectory as the correction starting point, make a correction ray with the maximum correction slope of the drilling equipment as the slope, and record the intersection of the ray and the drilling design trajectory as the correction end point; The drilling design trajectory between the correction starting point and the correction end point is replaced by the correction ray to obtain the corrected fitting drilling trajectory.

[0024] It is understandable that in order to minimize the exploration error caused by drilling trajectory deviation, the trajectory needs to be corrected to the designed drilling trajectory as soon as possible when the trajectory deviates. Therefore, when fitting the drilling trajectory after the design correction, offset drilling is performed based on the maximum correction slope of the drilling equipment to make the actual drilling trajectory return to the designed drilling trajectory, thereby minimizing the drilling error.

[0025] Reference Figure 5 As shown, the method for determining the maximum correction slope of the drilling equipment is: Based on the equipment performance of the drilling equipment, determining the maximum deviation slope of the drilling equipment during the drilling process; Calculate the maximum correction slope of the drilling equipment based on the maximum deviation slope of the drilling equipment during the drilling process and the current deviation parameter of the drill bit; The maximum correction slope is calculated as: In the formula, is the maximum correction slope of the drilling equipment, is the maximum offset slope during drilling.

[0026] During the drilling process, the drill bit face angle of the equipment itself has a certain range of rotation, and the drill bit face angle will be affected by factors such as rock geological conditions, coal seam distribution, and drill pipe gravity during the actual drilling process, resulting in deflection. Based on this, when designing the maximum offset slope, this solution takes into account the influence of the equipment's own maximum face angle rotation and environmental factors, and calculates the maximum correction slope that the equipment can actually maintain. The maximum correction slope is the maximum drilling slope that can maintain the actual drilling trajectory during the actual drilling process of the equipment.

[0027] Reference Figure 6 As shown, the drilling design trajectory data is updated based on the offset parameters of the drill bit and the fitted drilling trajectory, specifically including: Determine the coordinate point of the end point of the current actual drilling trajectory; Calling at least one known function to fit the corrected fitting drilling trajectory to obtain a fitting drilling trajectory function; Based on the fitted drilling trajectory function, the current offset parameters of the drill bit and the coordinate points of the end points of the current actual drilling trajectory, an updated drilling design trajectory function is generated through a trajectory generation model; An updated drilling design trajectory function is made in a plane rectangular coordinate system to obtain an updated drilling design trajectory; The trajectory generation model is specifically: In the formula, Design trajectory function for updated drilling, is the derivative function of the fitting drilling trajectory function, is the actual drilling trajectory function, which is the x-coordinate of the end point of the current actual drilling trajectory.

[0028] In this scheme, based on the actual offset trajectory of each drilling correction section and the offset parameters of the drill bit, updated drilling design trajectory data is generated to make the actual drilling trajectory fit the fitted drilling trajectory. Since the updated drilling design trajectory data has pre-added the actual impact value correction of the facing angle of the environmental drill bit, the control parameters generated based on the updated drilling design trajectory data can enable the drilling equipment to perform drilling construction according to the drilling trajectory that fits the fitted drilling trajectory, and the actual drilling trajectory can be achieved according to the predetermined trajectory, thereby effectively ensuring the safety and quality of the drilling construction.

[0029] For further information, see Figure 7 As shown, based on the same inventive concept as the above-mentioned method for intelligently identifying and correcting a drilling trajectory of a drill bit, this solution proposes a system for intelligently identifying and correcting a drilling trajectory of a drill bit, comprising: A control module is used to obtain a drilling design trajectory, set a number of monitoring points on the drilling design trajectory based on the drilling depth, generate control parameters based on the drilling design trajectory data, and input the parameters into the drilling equipment. The drilling equipment performs drilling construction according to the set control parameters. The trajectory monitoring module is used to obtain the actual drilling trajectory of the drilling equipment. When the single actual drilling trajectory of the drilling equipment includes the corrected number of monitoring points, the trajectory recognition algorithm is used to determine the current offset parameters of the drill bit. The correction module is electrically connected to the control module and the trajectory monitoring module. The correction module is used to set a correction amount, fit the corrected fitting drilling trajectory based on the current actual trajectory and the drilling design trajectory, and fit and update the drilling design trajectory data based on the offset parameters of the drill bit and the fitting drilling trajectory, and feed back the updated drilling design trajectory data to the control module.

[0030] The trajectory monitoring module includes: The trajectory monitoring unit uses the initial drilling point of the drilling equipment as the coordinate origin, the drilling depth as the x-axis, and the horizontal plane as the y-axis to establish a plane rectangular coordinate system, and respectively makes the drilling design trajectory and the actual drilling trajectory in the plane rectangular coordinate system; A fitting unit, the fitting unit is used to call at least one known function to fit the drilling design trajectory and the actual drilling trajectory respectively, to obtain the drilling design trajectory function and the actual drilling trajectory function; The offset calculation unit is used to determine the x-coordinates of all monitoring points included in the current single actual drilling trajectory, and calculate the current offset parameters of the drill bit through the offset calculation formula based on the drilling design trajectory function and the actual drilling trajectory function.

[0031] The correction modules include: The trajectory correction unit is used to fit the drilling trajectory after the design correction based on the current actual trajectory and the drilling design trajectory; The drilling correction unit is used to fit and update the drilling design trajectory data based on the offset parameters of the drill bit and the fitted drilling trajectory, and feed back the updated drilling design trajectory data to the control module.

[0032] The process of using the above system is as follows: Step 1: The control module obtains the drilling design trajectory, sets a number of monitoring points on the drilling design trajectory based on the drilling depth, generates control parameters based on the drilling design trajectory data, and inputs them into the drilling equipment. The drilling equipment performs drilling construction according to the set control parameters; Step 2: The trajectory monitoring module monitors the actual drilling trajectory of the equipment in real time. When the single actual drilling trajectory of the drilling equipment includes the corrected number of monitoring points, the trajectory line monitoring unit is called to establish a plane rectangular coordinate system with the initial drilling point of the drilling equipment as the coordinate origin, the drilling depth as the x-axis, and the horizontal plane as the y-axis, and the drilling design trajectory and the actual drilling trajectory are respectively made in the plane rectangular coordinate system, and then the fitting unit is called to call at least one known function to fit the drilling design trajectory and the actual drilling trajectory, so as to obtain the drilling design trajectory function and the actual drilling trajectory function; Step 3: The trajectory monitoring module calls the offset calculation unit to determine the x-coordinates of all monitoring points included in the current single actual drilling trajectory, and calculates the current offset parameters of the drill bit through the offset calculation formula based on the drilling design trajectory function and the actual drilling trajectory function; Step 4: The correction module calls the trajectory correction unit to fit the corrected drilling trajectory based on the current actual trajectory and the drilling design trajectory; Step 5: The correction module calls the drilling correction unit to fit and update the drilling design trajectory data based on the offset parameters of the drill bit and the fitted drilling trajectory, and feeds back the updated drilling design trajectory data to the control module.

[0033] Figure 8 Schematic diagram of a computer-readable storage medium structure provided by an embodiment of the present application. Figure 8 As shown, a computer-readable storage medium 600 according to an embodiment of the present application is shown. Computer-readable instructions are stored on the computer-readable storage medium 600. When the computer-readable instructions are executed by the processor, the method for intelligent identification and correction of drill bit drilling trajectory according to the embodiment of the present application described with reference to the above figures can be executed. The storage medium 600 includes, but is not limited to, for example, volatile memory and / or non-volatile memory. Volatile memory may include, for example, random access memory (RAM) and cache memory (cache), etc. Non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc.

[0034] To sum up, the advantages of the present invention are: the real-time fitting analysis method is used to quantify the correlation between the facing angle of the drill bit and the geological environmental factors, which reduces the difficulty of pre-designing the drilling trajectory, and at the same time realizes that the actual drilling trajectory moves according to the predetermined trajectory, thereby effectively ensuring the safety and quality of the drilling construction.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for intelligent identification and correction of drill bit drilling trajectory, characterized in that: include: Obtaining a designed drilling trajectory, and setting a number of monitoring points on the designed drilling trajectory based on the drilling depth; Generate control parameters based on drilling design trajectory data and input them into the drilling equipment, and the drilling equipment performs drilling construction according to the set control parameters; Set a correction amount; Acquire the actual drilling trajectory of the drilling equipment, and when the single actual drilling trajectory of the drilling equipment includes the corrected number of monitoring points, use the trajectory recognition algorithm to determine the current offset parameter of the drill bit; Based on the current actual trajectory and the drilling design trajectory, a fitting drilling trajectory after fitting design correction is performed; The drilling design trajectory data is updated by fitting based on the offset parameters of the drill bit and the fitted drilling trajectory.

2. The method for intelligent identification and correction of drill bit drilling trajectory according to claim 1, characterized in that: The trajectory recognition algorithm specifically includes: A plane rectangular coordinate system is established with the initial drilling point of the drilling equipment as the coordinate origin, the drilling depth as the x-axis, and the horizontal plane as the y-axis; Draw the designed drilling trajectory and the actual drilling trajectory in the plane rectangular coordinate system respectively; At least one known function is called to fit the designed drilling trajectory and the actual drilling trajectory respectively, so as to obtain the designed drilling trajectory function and the actual drilling trajectory function; Determine the x-coordinates of all monitoring points included in the current single actual drilling trajectory; Based on the drilling design trajectory function and the actual drilling trajectory function, the current offset parameter of the drill bit is calculated through the offset calculation formula; The offset calculation formula is specifically: In the formula, is the current offset parameter of the drill bit, is the set correction quantity, is the derivative of the actual drilling trajectory function, is the derivative of the drilling design trajectory function, is the x-coordinate of the ith monitoring point.

3. The method for intelligent identification and correction of drill bit drilling trajectory according to claim 2 is characterized in that: The calling of at least one known function to fit the designed drilling trajectory and the actual drilling trajectory specifically includes: Divide all monitoring points included in the current single actual drilling trajectory into sample points and verification points; Based on the coordinates of the sample points on the designed drilling trajectory and / or the actual drilling trajectory, calling at least one known sample function to perform curve fitting; and calculating the regression coefficient of determination of each sample function based on the verification points on the drilling design trajectory and / or the actual drilling trajectory, and determining the sample function with the smallest regression coefficient of determination as the drilling design trajectory function and / or the actual drilling trajectory function; The calculation formula of the regression determination coefficient is: In the formula, is the regression determination coefficient; RSS is the residual sum of squares of the sample function; TSS is the total sum of squares of the sample function.

4. The method for intelligent identification and correction of drill bit drilling trajectory according to claim 3 is characterized in that: The fitting drilling trajectory after fitting design correction based on the current actual trajectory and the drilling design trajectory specifically includes: Determine the end point of the current actual drilling trajectory; Determine the maximum correction slope of the drilling equipment, take the end point of the actual drilling trajectory as the correction starting point, make a correction ray with the maximum correction slope of the drilling equipment as the slope, and record the intersection of the ray and the drilling design trajectory as the correction end point; The drilling design trajectory between the correction starting point and the correction end point is replaced by the correction ray to obtain the corrected fitting drilling trajectory.

5. The method for intelligent identification and correction of drill bit drilling trajectory according to claim 4 is characterized in that: The method for determining the maximum correction slope of the drilling equipment is: Based on the equipment performance of the drilling equipment, determining the maximum deviation slope of the drilling equipment during the drilling process; Calculating a maximum correction slope of the drilling equipment based on a maximum deviation slope of the drilling equipment during the drilling process and a current deviation parameter of the drill bit; The calculation formula of the maximum correction slope is: In the formula, is the maximum correction slope of the drilling equipment, is the maximum offset slope during drilling.

6. The method for intelligent identification and correction of drill bit drilling trajectory according to claim 5, characterized in that: The updating of the drilling design trajectory data by fitting based on the offset parameter of the drill bit and the fitting drilling trajectory specifically includes: Determine the coordinate point of the end point of the current actual drilling trajectory; Calling at least one known function to fit the corrected fitting drilling trajectory to obtain a fitting drilling trajectory function; Based on the fitted drilling trajectory function, the current offset parameters of the drill bit and the coordinate points of the end points of the current actual drilling trajectory, an updated drilling design trajectory function is generated through a trajectory generation model; An updated drilling design trajectory function is made in a plane rectangular coordinate system to obtain an updated drilling design trajectory; The trajectory generation model is specifically: In the formula, Design trajectory function for updated drilling, is the derivative function of the fitting drilling trajectory function, is the actual drilling trajectory function, which is the x-coordinate of the end point of the current actual drilling trajectory.

7. A system for intelligent identification and correction of drilling trajectory of a drill bit, characterized in that: The method for realizing the intelligent identification and correction method of a drill bit drilling trajectory as claimed in any one of claims 1 to 6 comprises: A control module, wherein the control module is used to obtain a drilling design trajectory, set a number of monitoring points on the drilling design trajectory based on the drilling depth, generate control parameters based on the drilling design trajectory data, and input the control parameters into the drilling equipment, so that the drilling equipment performs drilling construction according to the set control parameters; A trajectory monitoring module, wherein the trajectory monitoring module is used to obtain an actual drilling trajectory of the drilling device, and when a single actual drilling trajectory of the drilling device includes a corrected number of monitoring points, a trajectory recognition algorithm is used to determine a current offset parameter of the drill bit; A correction module is electrically connected to the control module and the trajectory monitoring module, and is used to set a correction amount, fit the corrected fitting drilling trajectory based on the current actual trajectory and the drilling design trajectory, and fit and update the drilling design trajectory data based on the offset parameters of the drill bit and the fitting drilling trajectory, and feed back the updated drilling design trajectory data to the control module.

8. The intelligent identification and correction system for drill bit drilling trajectory according to claim 7 is characterized in that: The trajectory monitoring module includes: A trajectory monitoring unit, wherein the trajectory monitoring unit establishes a plane rectangular coordinate system with the initial drilling point of the drilling equipment as the coordinate origin, the drilling depth as the x-axis, and the horizontal plane as the y-axis, and respectively makes a drilling design trajectory and an actual drilling trajectory in the plane rectangular coordinate system; A fitting unit, the fitting unit is used to call at least one known function to fit the drilling design trajectory and the actual drilling trajectory respectively, to obtain the drilling design trajectory function and the actual drilling trajectory function; The offset calculation unit is used to determine the x-coordinates of all monitoring points included in the current single actual drilling trajectory, and calculate the current offset parameters of the drill bit through the offset calculation formula based on the drilling design trajectory function and the actual drilling trajectory function.

9. The intelligent identification and correction system for drill bit drilling trajectory according to claim 8, characterized in that: The correction module comprises: A trajectory correction unit, the trajectory correction unit is used to fit the drilling trajectory after the design correction based on the current actual trajectory and the drilling design trajectory; The drilling correction unit is used to fit and update the drilling design trajectory data based on the offset parameters of the drill bit and the fitted drilling trajectory, and feed back the updated drilling design trajectory data to the control module.

10. A computer-readable storage medium having a computer-readable program stored thereon, characterized in that: When the computer-readable program is called, it executes the method for intelligent identification and correction of drill bit drilling trajectory as described in any one of claims 1-6.

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