A system and method for intelligent identification and correction of drill bit drilling trajectory

Abstract

The present invention discloses a system and method for intelligent identification and correction of drilling trajectory of a drill bit, and relates to the field of geological exploration technology. The method comprises: obtaining control parameters for generating a drilling design trajectory, and inputting the control parameters into a drilling device, and the drilling device performs drilling construction according to the set control parameters; setting a correction number; obtaining the actual drilling trajectory of the drilling device, and using a trajectory identification algorithm to determine the current offset parameters of the drill bit; fitting the corrected fitting drilling trajectory based on the current actual trajectory and the drilling design trajectory; fitting and updating the drilling design trajectory data based on the offset parameters of the drill bit and the fitting drilling trajectory. The advantages of the present invention are: using a real-time fitting analysis method to quantify the relevant influence relationship between the facing angle of the drill bit and geological environmental factors, reducing the difficulty of pre-designing the drilling trajectory, and at the same time realizing that the actual drilling trajectory moves according to the predetermined trajectory, thereby effectively ensuring the safety and quality of the drilling construction.

Description

Technical Field

[0001] The present invention relates to the technical field of geological exploration, and specifically relates to a system and method for intelligent identification and correction of the drilling trajectory of a drill bit. Background Art

[0002] The safe production of coal mines puts higher and higher requirements on the drilling efficiency, drilling trajectory, etc. during the construction process in coal mines. The directional drilling technology has the advantages of fast drilling speed, high directional accuracy, "multiple branches from one hole", etc., and has become an effective technical means for borehole construction in high-yield and efficient coal mines, and is widely used in fields such as coal mine gas control and geological exploration.

[0003] During the directional drilling process, the measurement-while-drilling technology has become increasingly mature, but there is still a lack of effective means for controlling the drilling trajectory. Since the drilling trajectory is easily affected by factors such as the geological conditions of rock formations, coal seam distribution, and the gravity of drill pipes, the influence trend of the tool face angle on the inclination angle and azimuth angle is relatively easy to obtain, but the quantitative relationship between them is still very difficult to determine. The current control of the drilling trajectory is mostly carried out based on manual experience, which has strong empiricism and uncertainty. Insufficient experience of technicians during the construction process often leads to the actual drilling trajectory deviating from the predetermined trajectory, thereby affecting the safety and quality of the drilling construction, and even causing accidents such as drill string sticking and hole collapse, resulting in significant economic losses. Summary of the Invention

[0004] To solve the above technical problems, a system and method for intelligent identification and correction of the drilling trajectory of a drill bit are provided. This technical solution solves the 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 drill string sticking and hole collapse, resulting in significant economic losses.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A method for intelligent identification and correction of the drilling trajectory of a drill bit, comprising:

[0007] Obtain the designed drilling trajectory, and set a number of monitoring points on the designed drilling trajectory based on the drilling depth;

[0008] Generate control parameters based on the designed drilling trajectory data, and input them into the drilling equipment. The drilling equipment performs drilling construction according to the set control parameters;

[0009] Set a correction quantity;

[0010] Obtain the actual drilling trajectory of the drilling equipment. When the single actual drilling trajectory of the drilling equipment includes the correction quantity of monitoring points, use a trajectory recognition algorithm to determine the current offset parameters of the drill bit;

[0011] Based on the current actual trajectory and the drilling design trajectory, a fitted drilling trajectory after fitting design correction is carried out;

[0012] Based on the offset parameters of the drill bit and the fitted drilling trajectory, the data of the fitted updated drilling design trajectory is carried out.

[0013] Preferably, the trajectory recognition algorithm specifically includes:

[0014] Taking the initial drilling point of the drilling equipment as the coordinate origin, taking the drilling depth as the x-axis, and taking the horizontal plane as the y-axis, a plane rectangular coordinate system is established;

[0015] The drilling design trajectory and the actual drilling trajectory are respectively made in the plane rectangular coordinate system;

[0016] At least one known function is respectively called to fit the drilling design trajectory and the actual drilling trajectory, and a drilling design trajectory function and an actual drilling trajectory function are obtained;

[0017] Determine the x coordinates of all monitoring points included in the current single actual drilling trajectory;

[0018] Based on the drilling design trajectory function and the actual drilling trajectory function, through the offset calculation formula, calculate the current offset parameters of the drill bit;

[0019] Among them, the offset calculation formula is specifically:

[0020]

[0021] In the formula, is the current offset parameter of the drill bit, is the set number of corrections, is the derivative function of the actual drilling trajectory function, is the derivative function of the drilling design trajectory function, is the x coordinate of the i-th monitoring point.

[0022] Preferably, the calling of at least one known function to fit the drilling design trajectory and the actual drilling trajectory specifically includes:

[0023] All monitoring points included in the current single actual drilling trajectory are divided into sample points and verification points;

[0024] Based on the coordinates of the sample points on the drilling design trajectory and / or the actual drilling trajectory, at least one known sample function is called for curve fitting;

[0025] And based on the verification points on the drilling design trajectory and / or the actual drilling trajectory, the regression determination coefficient of each sample function is calculated, and the sample function with the smallest regression determination coefficient is determined as the drilling design trajectory function and / or the actual drilling trajectory function;

[0026] The calculation formula of the regression determination coefficient is as follows:

[0027]

[0028] In the formula, is the regression determination coefficient;

[0029] RSS is the sum of squared residuals of the sample function;

[0030] TSS is the total sum of squares of the sample function.

[0031] Preferably, the fitted borehole trajectory after fitting design correction based on the current actual trajectory and the borehole design trajectory specifically includes:

[0032] Determine the end point position of the current actual borehole trajectory;

[0033] Determine the maximum correction slope of the borehole equipment, take the end point position of the actual borehole trajectory as the correction starting point, and make a correction ray with the maximum correction slope of the borehole equipment as the slope, and record the intersection point of the ray and the borehole design trajectory as the correction end point;

[0034] Replace the borehole design trajectory between the correction starting point and the correction end point with the correction ray to obtain the corrected fitted borehole trajectory.

[0035] Preferably, the method for determining the maximum correction slope of the borehole equipment is as follows:

[0036] Based on the equipment performance of the borehole equipment, determine the maximum offset slope during the borehole process;

[0037] Based on the maximum offset slope during the borehole process of the borehole equipment and the current offset parameters of the drill bit, calculate the maximum correction slope of the borehole equipment;

[0038] The calculation formula of the maximum correction slope is as follows:

[0039]

[0040] In the formula, is the maximum correction slope of the borehole equipment, is the maximum offset slope during the borehole process.

[0041] Preferably, the specific steps of fitting and updating the borehole design trajectory data based on the offset parameters of the drill bit and the fitted borehole trajectory specifically include:

[0042] Determine the coordinate point of the end point position of the current actual borehole trajectory;

[0043] Call at least one known function to fit the corrected fitted borehole trajectory to obtain the fitted borehole trajectory function;

[0044] Based on the fitting drilling trajectory function, the current offset parameters of the drill bit, and the coordinates of the end point of the current actual drilling trajectory, an updated drilling design trajectory function is generated through the trajectory generation model;

[0045] In the plane rectangular coordinate system, the updated drilling design trajectory function is plotted to obtain the updated drilling design trajectory;

[0046] The trajectory generation model is specifically:

[0047]

[0048] wherein, is the updated drilling design trajectory function, is the derivative function of the fitting drilling trajectory function, is the actual drilling trajectory function, is the x coordinate of the end point of the current actual drilling trajectory.

[0049] Furthermore, a smart recognition and correction system for the drill bit drilling trajectory is proposed, which is used to implement the method for smart recognition and correction of the drill bit drilling trajectory as described above, including:

[0050] A control module, which is used to obtain the 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 them into the drilling equipment. The drilling equipment performs drilling construction according to the set control parameters;

[0051] A trajectory monitoring module, which 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;

[0052] A correction module, which is electrically connected to the control module and the trajectory monitoring module. The correction module is used to set a correction number, perform fitting design to correct the fitting drilling trajectory based on the current actual trajectory and the drilling design trajectory, and perform fitting to 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.

[0053] Optionally, the trajectory monitoring module includes:

[0054] A trajectory line monitoring unit, which takes 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 plot the drilling design trajectory and the actual drilling trajectory in the plane rectangular coordinate system;

[0055] A fitting unit, which is used to respectively 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;

[0056] An offset calculation unit, which 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 based on the drilling design trajectory function and the actual drilling trajectory function through the offset calculation formula.

[0057] Optionally, the correction module includes:

[0058] A trajectory correction unit, which is used to perform fitting design and correction on the fitting drilling trajectory based on the current actual trajectory and the drilling design trajectory;

[0059] A drilling correction unit, which is used to perform fitting and update the drilling design trajectory data based on the offset parameters of the drill bit and the fitting drilling trajectory, and feedback the updated drilling design trajectory data to the control module.

[0060] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0061] The present invention proposes an intelligent identification and correction scheme for the drilling trajectory of a drill bit. Based on the actual influence value of the facing angle of the drill bit of the drilling equipment caused by factors such as rock stratum geological conditions, coal seam distribution, and drill pipe gravity during the actual drilling process, real-time analysis is carried out, and monitoring points are designed to cooperate with the correction quantity to divide the drilling trajectory into several drilling correction segments. Based on the actual offset trajectory and the offset parameters of the drill bit in each drilling correction segment, a fitting drilling trajectory that can restore the drilling progress to the drilling design trajectory is dynamically generated, and updated drilling design trajectory data that can make the actual drilling trajectory fit the fitting drilling trajectory. Since the updated drilling design trajectory data has been pre-added with corrections for the actual influence value of the facing angle of the environmental drill bit, the control parameters generated based on the updated drilling design trajectory data can make the drilling equipment perform drilling construction according to the drilling trajectory that fits the fitting drilling trajectory, so that the actual drilling trajectory can travel according to the predetermined trajectory, thereby effectively ensuring the safety and quality of the drilling construction. Description of the Drawings

[0062] Figure 1 It is a flow chart of the intelligent identification and correction method for the drilling trajectory of a drill bit proposed in this solution;

[0063] Figure 2 It is a flow chart of the trajectory recognition algorithm in this solution;

[0064] Figure 3 It is a flow chart of the method for calling at least one known function to fit the drilling design trajectory and the actual drilling trajectory in this solution;

[0065] Figure 4 It is the flow chart of the method for correcting the fitted drilling trajectory after the fitting design in this solution;

[0066] Figure 5 It is the flow chart of the method for determining the maximum correction slope of the drilling equipment in this solution;

[0067] Figure 6 It is the flow chart of the method for fitting and updating the drilling design trajectory data in this solution;

[0068] Figure 7 It is the structural block diagram of the intelligent recognition and correction system for the drill bit drilling trajectory proposed in this solution;

[0069] Figure 8 It is the schematic diagram of the structure of the computer-readable storage medium in this solution. Specific embodiments

[0070] 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 in the following description are only examples, and those skilled in the art can think of other obvious variations.

[0071] Referring to Figure 1 As shown, a method for intelligent recognition and correction of drill bit drilling trajectory includes:

[0072] Obtain the drilling design trajectory, and set a number of monitoring points on the drilling design trajectory based on the drilling depth;

[0073] Generate control parameters based on the drilling design trajectory data, and input them into the drilling equipment. The drilling equipment performs drilling construction according to the set control parameters;

[0074] Set a correction quantity;

[0075] Obtain the actual drilling trajectory of the drilling equipment. When the single actual drilling trajectory of the drilling equipment includes the correction quantity of monitoring points, use the trajectory recognition algorithm to determine the current offset parameters of the drill bit;

[0076] Based on the current actual trajectory and the drilling design trajectory, perform fitting to correct the fitted drilling trajectory;

[0077] Based on the offset parameters of the drill bit and the fitted drilling trajectory, perform fitting to update the drilling design trajectory data.

[0078] This solution conducts real-time analysis on the actual influence value of the facing angle of the drill bit of the drilling equipment caused by factors such as the geological conditions of the rock formation, coal seam distribution, and the gravity of the drill pipe during the actual drilling process. It designs monitoring points and cooperates with the correction quantity to divide the drilling trajectory into several drilling correction segments. Based on the actual deviation trajectory of each drilling correction segment and the deviation parameters of the drill bit, it dynamically generates 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.

[0079] Refer to Figure 2 As shown, the trajectory recognition algorithm specifically includes:

[0080] Taking the initial drilling point of the drilling equipment as the coordinate origin, taking the drilling depth as the x-axis, and taking the horizontal plane as the y-axis, a plane rectangular coordinate system is established;

[0081] The drilling design trajectory and the actual drilling trajectory are respectively plotted in the plane rectangular coordinate system;

[0082] At least one known function is respectively called to fit the drilling design trajectory and the actual drilling trajectory to obtain the drilling design trajectory function and the actual drilling trajectory function;

[0083] Determine the x coordinates of all monitoring points included in the current single actual drilling trajectory;

[0084] Based on the drilling design trajectory function and the actual drilling trajectory function, the current deviation parameters of the drill bit are calculated through the deviation calculation formula;

[0085] Among them, the deviation calculation formula is specifically:

[0086]

[0087] In the formula, is the current deviation parameter of the drill bit, is the set correction quantity, is the derivative function of the actual drilling trajectory function, is the derivative function of the drilling design trajectory function, is the x coordinate of the i-th monitoring point.

[0088] Refer to Figure 3 As shown, calling at least one known function to fit the drilling design trajectory and the actual drilling trajectory specifically includes:

[0089] All monitoring points included in the current single actual drilling trajectory are divided into sample points and verification points;

[0090] Based on the coordinates of the sample points on the drilling design trajectory and / or the actual drilling trajectory, at least one known sample function is called for curve fitting;

[0091] Calculate the regression determination coefficient of each sample function based on the verification points on the designed drilling trajectory and / or the actual drilling trajectory, and determine the sample function with the smallest regression determination coefficient as the designed drilling trajectory function and / or the actual drilling trajectory function;

[0092] The calculation formula for the regression determination coefficient is:

[0093]

[0094] In the formula, is the regression determination coefficient;

[0095] RSS is the sum of squared residuals of the sample function;

[0096] TSS is the total sum of squares of the sample function.

[0097] During the actual drilling process, the facing angle of the drill bit is susceptible to factors such as the geological conditions of the rock formation, coal seam distribution, and the gravity of the drill pipe. Moreover, it is difficult to determine the quantitative influence relationship between the facing angle of the drill bit and these environmental factors. Therefore, in this solution, 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, obtain the offset angles that occurred in the drilling trajectory due to the deviation of the facing angle of the drill bit under different environmental factors, and further quantify the relevant influence relationship between the facing angle of the drill bit and the geological environmental factors.

[0098] Refer to Figure 4 As shown, based on the current actual trajectory and the designed drilling trajectory, the fitted drilling trajectory after fitting design correction specifically includes:

[0099] Determine the end point of the current actual drilling trajectory;

[0100] Determine the maximum correction slope of the drilling equipment. Taking the end point of the actual drilling trajectory as the correction starting point and the maximum correction slope of the drilling equipment as the slope, draw a correction ray. Denote the intersection point of the ray and the designed drilling trajectory as the correction end point;

[0101] Replace the designed drilling trajectory between the correction starting point and the correction end point with the correction ray to obtain the corrected fitted drilling trajectory.

[0102] It can be understood that to minimize the exploration error caused by the deviation of the drilling trajectory, when the trajectory deviates, it is necessary to correct the trajectory to the designed drilling trajectory as soon as possible. Therefore, when performing the fitted drilling trajectory after fitting design correction, offset drilling is carried out 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.

[0103] Refer to Figure 5As shown in the figure, the method for determining the maximum correction slope of the drilling equipment is as follows:

[0104] Based on the equipment performance of the drilling equipment, determine the maximum offset slope during the drilling process of the drilling equipment;

[0105] Based on the maximum offset slope during the drilling process of the drilling equipment and the current offset parameters of the drill bit, calculate the maximum correction slope of the drilling equipment;

[0106] The calculation formula for the maximum correction slope is:

[0107]

[0108] In the formula, is the maximum correction slope of the drilling equipment, is the maximum offset slope during the drilling process.

[0109] Since during the drilling process of the equipment, the rotation of the drill bit's facing angle itself has a certain range, and during the actual drilling process, the drill bit's facing angle will also be deflected due to factors such as the geological conditions of the rock formation, coal seam distribution, and the gravity of the drill pipe. Based on this, when designing the maximum offset slope in this solution, consider the maximum facing angle rotation of the equipment itself and the influence of environmental factors, and calculate the maximum correction slope that the equipment can actually maintain. This maximum correction slope is the maximum drilling slope that the equipment can maintain the actual drilling trajectory during the actual drilling process.

[0110] Refer to Figure 6 As shown in the figure, based on the offset parameters of the drill bit and the fitting of the drilling trajectory, the specific steps for updating the drilling design trajectory data include:

[0111] Determine the coordinate points of the end point of the current actual drilling trajectory;

[0112] Call at least one known function to fit and correct the fitting drilling trajectory to obtain the fitting drilling trajectory function;

[0113] Based on the fitting drilling trajectory function, the current offset parameters of the drill bit, and the coordinate points of the end point of the current actual drilling trajectory, through the trajectory generation model, generate the updated drilling design trajectory function;

[0114] Make the updated drilling design trajectory function in the plane rectangular coordinate system to obtain the updated drilling design trajectory;

[0115] The trajectory generation model is specifically:

[0116]

[0117] In the formula, is the updated drilling design trajectory function, is the derivative function of the fitting drilling trajectory function, is the actual drilling trajectory function, is the x coordinate of the end point of the current actual drilling trajectory.

[0118] In this solution, based on the actual offset trajectory of each drilling correction section and the offset parameters of the drill bit, updated drilling design trajectory data that makes the actual drilling trajectory fit the fitted drilling trajectory is generated. Since the updated drilling design trajectory data has been pre-increased with the actual influence value correction for 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 along a drilling trajectory that fits the fitted drilling trajectory, and the actual drilling trajectory can be made to travel along the predetermined trajectory, thereby effectively ensuring the safety and quality of the drilling construction.

[0119] Further, please refer to Figure 7 As shown, based on the same inventive concept as the above method for intelligent identification and correction of drill bit drilling trajectories, this solution proposes a system for intelligent identification and correction of drill bit drilling trajectories, including:

[0120] A control module, which is used to obtain the 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 them into the drilling equipment. The drilling equipment performs drilling construction according to the set control parameters;

[0121] A trajectory monitoring module, which 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, a trajectory recognition algorithm is used to determine the current offset parameters of the drill bit;

[0122] A correction module, which is electrically connected to the control module and the trajectory monitoring module. The correction module is used to set a correction number, perform fitting design to correct the fitted drilling trajectory based on the current actual trajectory and the drilling design trajectory, and perform fitting to update the drilling design trajectory data based on the offset parameters of the drill bit and the fitted drilling trajectory, and feedback the updated drilling design trajectory data to the control module.

[0123] The trajectory monitoring module includes:

[0124] A trajectory line monitoring unit, which takes the initial drilling point of the drilling equipment as the coordinate origin, takes the drilling depth as the x-axis, and takes the horizontal plane as the y-axis to establish a plane rectangular coordinate system, and respectively plots the drilling design trajectory and the actual drilling trajectory in the plane rectangular coordinate system;

[0125] A fitting unit, which is used to respectively call at least one known function to fit the drilling design trajectory and the actual drilling trajectory to obtain the drilling design trajectory function and the actual drilling trajectory function;

[0126] An offset calculation unit is used to determine the x coordinates of all monitoring points included in the current single actual drilling trajectory, and based on the drilling design trajectory function and the actual drilling trajectory function, calculate the current offset parameters of the drill bit through an offset calculation formula.

[0127] The correction module includes:

[0128] A trajectory correction unit is used to perform fitting design to correct the fitting drilling trajectory based on the current actual trajectory and the drilling design trajectory;

[0129] A drilling correction unit is used to perform fitting to 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.

[0130] The usage process of the above system is as follows:

[0131] 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;

[0132] 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, it calls the trajectory line monitoring unit 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 respectively plot the drilling design trajectory and the actual drilling trajectory in the plane rectangular coordinate system. Then it calls the fitting unit to call at least one known function to fit the drilling design trajectory and the actual drilling trajectory to obtain the drilling design trajectory function and the actual drilling trajectory function;

[0133] 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 based on the drilling design trajectory function and the actual drilling trajectory function, calculates the current offset parameters of the drill bit through an offset calculation formula;

[0134] Step 4: The correction module calls the trajectory correction unit to perform fitting design to correct the fitting drilling trajectory based on the current actual trajectory and the drilling design trajectory;

[0135] Step 5: The correction module calls the drilling correction unit to perform fitting to 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.

[0136] Figure 8 It is a schematic structural diagram of a computer-readable storage medium provided by an embodiment of the present application. AsFigure 8 As shown, it is a computer-readable storage medium 600 according to an embodiment of the present application. Computer-readable instructions are stored on the computer-readable storage medium 600. When the computer-readable instructions are run by a processor, it can execute the intelligent recognition and correction method for the drilling trajectory of a drill bit according to the embodiments of the present application described with reference to the above drawings. 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, etc. Non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc.

[0137] In summary, the advantages of the present invention are as follows: By using the method of real-time fitting analysis to quantify the correlation between the orientation angle of the drill bit and geological environment factors, the difficulty of pre-designing the drilling trajectory is reduced. At the same time, the actual drilling trajectory can travel according to the predetermined trajectory, thereby effectively ensuring the safety and quality of the drilling construction.

[0138] 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 by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended 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; Based on the offset parameters of the drill bit and the fitted drilling trajectory, the drilling design trajectory data is updated by fitting; 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.

2. The method for intelligent identification and correction of drill bit drilling trajectory according to claim 1, 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.

3. The method for intelligent identification and correction of drill bit drilling trajectory according to claim 2 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.

4. The method for intelligent identification and correction of drill bit drilling trajectory according to claim 3 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.

5. The method for intelligent identification and correction of drill bit drilling trajectory according to claim 4 is 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, It is the x coordinate of the end point of the current actual drilling trajectory.

6. 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 5 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, 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, based on the current actual trajectory and the drilling design trajectory, to fit and design the corrected fitting drilling trajectory, and based on the offset parameter of the drill bit and the fitting drilling trajectory, to fit and update the drilling design trajectory data, and to feed back the updated drilling design trajectory data to the control module; 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.

7. The intelligent identification and correction system for drill bit drilling trajectory according to claim 6 is 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.

8. 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 1-5.

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