Hydraulic drilling machine drilling parameter self-correction system and method under complex geology

Abstract

The application discloses a hydraulic drilling rig drilling parameter self-correction system and method under complex geology, and relates to the technical field of intelligent control of mine machinery, and comprises the following steps: S1, the pressure change trajectory in the hydraulic cylinder and the pressure change trajectory outside the hydraulic cylinder are reconstructed through the synchronous acquisition of a multipoint pressure sensor and a displacement sensor, and an uplink pressure wave time profile and a downlink pressure wave time profile are generated. The application enables the breath type hydraulic energy release in the anti-phase correction risk time zone, so that the pressure wave is continuously disturbed and is difficult to superimpose, the alternating load of the structure bearing is effectively weakened, and the drilling rig maintains a safe stress state in the vibration. By corresponding the fatigue area and the risk time zone, the hydraulic adjustment can actively match the structure stress demand, the pressure change is controlled in sections, the drilling rig can maintain stable operation under the complex stratum, and the overall reliability and service life are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent control of mine machinery, and particularly relates to a hydraulic drilling rig drilling parameter self-correction system and method under complex geology. BACKGROUND

[0002] The hydraulic drilling rig drilling parameter self-correction under complex geology refers to that, in the drilling process of the drilling rig, when complex geological conditions such as sudden change of rock hardness, fracture development, water-bearing layer permeability or interlayer slip are encountered, the system can identify abnormal changes of drilling resistance, vibration amplitude and mechanical load by monitoring real-time multi-source sensing data such as drilling pressure, rotating speed, pump pressure, torque and penetration speed, and on this basis, a decision and adjustment mechanism based on intelligent control technology is introduced, an adaptive algorithm model built-in is used to dynamically calculate and feedback correct the control instruction, and the key operating parameters of the drilling rig are automatically adjusted, so that the drilling rig can continuously maintain an optimal working state in different geological media. Specifically, the process establishes a dynamic mapping relationship between the drilling parameters and the stratum response, and combines intelligent control technology means such as state perception, prediction judgment and closed-loop feedback control to real-time correct the matching ratio of drilling pressure and rotating speed, optimize the collaborative control strategy of pump pressure and displacement, avoid risks such as sticking, well wall collapse or overloading of drilling tools caused by parameter response lag, realize the intelligent control transformation from passive adjustment to active perception, autonomous decision and continuous correction in the drilling process, and continuously update the control strategy through the parameter closed-loop self-learning mechanism, so as to effectively improve the overall construction efficiency while ensuring the drilling stability and equipment safety.

[0003] The prior art has the following disadvantages:

[0004] In the prior art, when the hydraulic drilling rig drills under complex geological conditions, in order to cope with the change of stratum resistance and the fluctuation of drilling pressure, a high-frequency dynamic adjustment mechanism of drilling parameters is usually relied on to maintain the balance of drilling pressure, torque and pump pressure. However, when there is feedback delay or parameter identification deviation in the high-frequency adjustment process of the system, the phenomenon of reverse correction is likely to occur, that is, the judgment of the control algorithm on the direction of hydraulic fluctuation is opposite to the actual change trend, resulting in a superimposed resonance effect between the uplink pressure wave and the downlink pressure wave of the hydraulic system. Because the hydraulic medium has compressibility and wave propagation inertia, this superposition will form an abnormal high-amplitude transient pressure peak, and the instantaneous impact force is transmitted to the drilling rig structure through the oil cylinder, connecting arm and support frame, so that the drilling rig structure bears alternating loads far exceeding the design threshold in a very short time, causing the stress concentration zone of the structure to enter the fatigue limit state, and thus inducing micro-crack propagation, connection node loosening and even overall buckling instability.

[0005] The above information disclosed in the background section is only used to enhance the understanding of the background of the present disclosure, and therefore it can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0006] The present application aims to provide a hydraulic drilling rig drilling parameter self-correction system and method under complex geology to solve the problems in the background art.

[0007] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme: a hydraulic drilling rig drilling parameter self-correction method under complex geology, comprising the following steps:

[0008] S1, reconstructing the pressure change trajectory inside the hydraulic cylinder and the pressure change trajectory outside the hydraulic cylinder through the synchronous acquisition of the multi-point pressure sensor and the displacement sensor, and generating the uplink pressure wave time profile and the downlink pressure wave time profile;

[0009] S2, extracting the pressure wave extreme value rhythm based on the uplink pressure wave time profile and the downlink pressure wave time profile, marking the time when the pressure wave direction jumps, and extending the pressure wave extreme value rhythm to form an anti-phase correction risk time zone;

[0010] S3, arranging strain sensing units at key positions of the drilling rig structure, converting the anti-phase correction risk time zone into a structure stress distribution curve, and identifying the structure region entering the fatigue limit according to the structure stress distribution curve;

[0011] S4, constructing a hydraulic adjustment rule according to the structure region entering the fatigue limit, dividing the anti-phase correction risk time zone into a flexible slow-rising segment and a flexible slow-descending segment, and generating a segmented hydraulic control sequence for suppressing pressure peaks;

[0012] S5, triggering the breathing type hydraulic energy release ring according to the segmented hydraulic control sequence within the anti-phase correction risk time zone, and interfering with the superposition relationship of the uplink pressure wave and the downlink pressure wave through short-period alternating micro-pressure relief and micro-pressure increase, so that the drilling rig structure remains in the safe operation interval during continuous vibration.

[0013] Preferably, the uplink pressure wave time profile and the downlink pressure wave time profile generation step is as follows:

[0014] A plurality of pressure sensors are arranged circumferentially and axially on the hydraulic cylinder, and a pressure sensor is arranged outside the hydraulic cylinder, and a displacement sensor is arranged in the direction of the hydraulic cylinder piston stroke, so that the hydraulic cylinder internal pressure change information, the hydraulic cylinder external pressure change information and the piston displacement change information form continuous records on the same time axis;

[0015] The hydraulic cylinder internal pressure change information and the hydraulic cylinder external pressure change information are arranged in time sequence, so that the pressure change process and the piston displacement form a corresponding relationship, thereby generating the hydraulic cylinder internal pressure time sequence and the hydraulic cylinder external pressure time sequence;

[0016] Based on the pressure rise and pressure fall phases in the internal pressure time series and external pressure time series of the hydraulic cylinder, continuous upward pressure change process and downward pressure change process are formed respectively, so that the internal pressure change trajectory and the external pressure change trajectory are consistent in the time dimension.

[0017] During continuous pressure changes, the upward pressure range and the downward pressure range are distinguished, so that the pressure change trajectory inside the hydraulic cylinder generates an upward pressure wave time profile and a downward pressure wave time profile.

[0018] Preferably, the steps for generating the inverse correction risk time band are as follows:

[0019] The time profiles of the upward pressure wave and the downward pressure wave are continuously unfolded in chronological order, so that the pressure rise process and the pressure fall process form a comparable pressure change path on the same time axis, and the positions of pressure peak and pressure trough are marked respectively.

[0020] After obtaining the pressure peak and pressure trough positions, the direction of pressure change between consecutive extreme values ​​is sorted out so that the moment when the pressure wave direction changes from upward to downward and from downward to upward forms the moment of directional jump on the time axis.

[0021] After obtaining the moment of directional change, the moment of directional change is extended forward and backward according to the time period, so that a time extension region that can cover the energy conversion phase of the pressure wave is formed around the moment of change.

[0022] After obtaining the time extension region, all time extension regions are merged in chronological order so that adjacent extension regions form a continuous time band, thus constituting the reverse correction risk time band.

[0023] Preferably, when forming the anti-phase correction risk time zone, the starting point of the time extension region is limited to the stable interval of the continuous pressure rise segment before the pressure wave direction changes, and the ending point of the time extension region is limited to the stable interval of the continuous pressure fall segment after the pressure wave direction changes, so that the anti-phase correction risk time zone covers the entire process of pressure wave energy conversion and maintains time continuity.

[0024] Preferably, the steps for converting the inverse correction risk time band into a structural stress distribution curve and identifying the structural region entering the fatigue limit are as follows:

[0025] Strain sensing units are installed in the main load-bearing components, stress concentration locations, connection nodes, and areas bearing alternating loads of the overall drill frame structure, so that the strain changes obtained by the strain sensing units and the anti-phase correction risk time zone form a consistent time mapping using a unified time reference.

[0026] After obtaining the strain change, the time periods in the reverse phase correction risk time zone are mapped to the strain change trajectory of each strain sensing unit, so that the strain fluctuations of the drill frame structure in the risk time zone form a continuous correspondence on the time axis.

[0027] After the strain change trajectory is formed, it is converted into a structural stress change trajectory according to the material mechanics relationship, so that the stress magnitude, stress change rate and stress fluctuation amplitude of the drill frame structure in the reverse phase correction risk time zone form a structural stress distribution curve.

[0028] After obtaining the structural stress distribution curve, the continuous high stress segment is compared with the material fatigue limit data, so that the structural region where the drill frame structure reaches the fatigue limit within the reverse phase correction risk time zone can be identified.

[0029] Preferably, when forming the structural stress distribution curve, the continuous strain fluctuations within the risk time band are corrected by corresponding reverse phase correction, and the stress rise segment and stress fall segment are kept as continuous change trajectories, so that the structural stress inflection point can be clearly marked on the time axis, thereby improving the accuracy of identifying the structural region entering the fatigue limit.

[0030] Preferably, the steps for constructing hydraulic adjustment rules and generating segmented hydraulic control sequences based on the structural region entering the fatigue limit are as follows:

[0031] After obtaining the structural stress distribution curve and identifying the structural region that has entered the fatigue limit, the time period corresponding to the structural region that has entered the fatigue limit is matched with the anti-phase correction risk time zone, so that the anti-phase correction risk time zone has a temporal meaning that reflects the stress state of the structure.

[0032] After completing the corresponding analysis, the stress change trend of the structural region that has entered the fatigue limit in the reverse correction risk time zone will be analyzed, and the stage of pressure wave affecting the structure will be divided into the flexible rise demand period and the flexible fall demand period.

[0033] After obtaining the flexible rise and flexible fall demand periods, different pressure adjustment intensities are formed based on the stress change amplitude and stress change rate in the structural stress distribution curve, so that the flexible rise and flexible fall sections have clear adjustment attributes on the time axis.

[0034] After determining the regulation attributes, by combining the flexible rise segment and the flexible fall segment in time sequence, the reverse phase correction risk time band is formed into a continuous regulation sequence consisting of multiple pressure regulation segments, and a segmented hydraulic control sequence for suppressing pressure peaks is generated.

[0035] Preferably, when forming a segmented hydraulic control sequence, the pressure rise limit of the flexible rise segment and the pressure fall limit of the flexible fall segment are gradually increased according to the strength of the structural stress, so that the structural region entering the fatigue limit obtains a higher level of buffer constraint within the risk time zone of the reverse correction, thereby making the pressure change form a smoother transition process within the continuous control segment.

[0036] Preferably, the steps for triggering the breathing hydraulic energy release ring according to the segmented hydraulic control sequence within the reverse phase correction risk time band are as follows:

[0037] After entering the risk time zone of the reverse correction, the flexible slow rise segment and the flexible slow fall segment in the segmented hydraulic control sequence are mapped to different time segments in the risk time zone, so that the internal pressure of the hydraulic cylinder enters a smooth transition state before the direction changes.

[0038] After the corresponding action is completed, short-cycle micro-depressurization and micro-pressurization actions are performed between the flexible rise and descent sections to disturb the energy transmission path of the pressure wave and avoid pressure superposition.

[0039] After the alternation of micro-depressurization and micro-pressurization is formed, the alternation action is continuously advanced within the anti-phase correction risk time band, so that the pressure wave is uniformly cut and dispersed during the propagation process, thereby limiting the formation of pressure peaks.

[0040] After the alternating action ends, the internal pressure of the hydraulic cylinder gradually returns to the normal pressure trajectory when it leaves the risk zone of the reverse correction, so that the drill frame structure remains in the safe operating range during continuous vibration.

[0041] A self-correction system for drilling parameters of hydraulic drilling rigs in complex geological conditions includes a pressure wave time-domain reconstruction module, an anti-phase correction risk identification module, a structural stress mapping and fatigue identification module, a hydraulic segmented control sequence generation module, and a breathing-type hydraulic energy release regulation module.

[0042] The pressure wave time domain reconstruction module reconstructs the pressure change trajectory inside and outside the hydraulic cylinder by synchronously acquiring data from multiple pressure sensors and displacement sensors, generating an upward pressure wave time profile and a downward pressure wave time profile.

[0043] The anti-phase correction risk identification module extracts the extreme value rhythm of pressure waves based on the time profiles of upward and downward pressure waves, marks the moment when the direction of pressure waves jumps, and extends the extreme value rhythm of pressure waves to form an anti-phase correction risk time band.

[0044] The structural stress mapping and fatigue identification module deploys strain sensing units at key locations in the drill frame structure, converts the inverse correction risk time zone into a structural stress distribution curve, and identifies the structural region that has entered the fatigue limit based on the structural stress distribution curve.

[0045] The hydraulic segmented control sequence generation module constructs hydraulic adjustment rules based on the structural region entering the fatigue limit, divides the reverse correction risk time zone into a flexible gradual rise segment and a flexible gradual fall segment, and generates a segmented hydraulic control sequence to suppress pressure peaks.

[0046] The breathing hydraulic energy release control module triggers the breathing hydraulic energy release ring according to the segmented hydraulic control sequence within the risk time zone of the reverse phase correction. By interfering with the superposition relationship between the upward pressure wave and the downward pressure wave through short-cycle alternating micro-depressurization and micro-pressurization, the drill frame structure is kept in the safe operating range during continuous vibration.

[0047] The technical effects and advantages provided by the present invention in the above technical solution are as follows:

[0048] This invention utilizes a breathing-style hydraulic energy release during the risk period of the reverse phase correction, continuously disturbing the pressure wave along its propagation path. This prevents high-amplitude energy concentration during the direction change phase of the pressure wave, making the energy transfer of the pressure wave inside the hydraulic cylinder more uniform and controllable. Because the upward and downward pressure waves cannot superimpose within the risk period, the alternating load on the structure is significantly reduced, allowing the drill frame to remain within a safe operating range under continuous vibration. This results in a smoother stress distribution throughout the drilling process, effectively mitigating fatigue stress accumulation caused by pressure fluctuations and improving the dynamic stability of the drilling process.

[0049] This invention integrates the structural region approaching its fatigue limit with the risk time zone of the reverse correction, enabling the hydraulic adjustment process to proactively adjust according to the actual stress on the structure. This prevents pressure waves from changing beyond the structure's bearing capacity during propagation, flexibly limiting both pressure rises and falls, providing the structure with a longer stress buffer time, and enhancing the overall impact resistance of the drill frame in complex geological formations. By employing segmented hydraulic control sequences to regulate pressure fluctuations, the hydraulic medium remains controllable within the risk time zone, ensuring better stability of the drilling rig throughout the drilling process and improving the service life and operational reliability of the equipment in complex geological formations. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0051] Figure 1 This is a flowchart of the self-correction method for drilling parameters of hydraulic drilling rigs under complex geological conditions according to the present invention.

[0052] Figure 2This is a schematic diagram of the self-correction system for drilling parameters of hydraulic drilling rigs under complex geological conditions, as described in this invention. Detailed Implementation

[0053] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that the description of this disclosure will be more complete and fully convey the concept of the exemplary embodiments to those skilled in the art.

[0054] This invention provides, for example Figure 1 The self-correction method for drilling parameters of hydraulic drilling rigs under complex geological conditions, as shown, includes the following steps:

[0055] S1, through the synchronous acquisition of multiple pressure sensors and displacement sensors, reconstructs the pressure change trajectory inside the hydraulic cylinder and the pressure change trajectory outside the hydraulic cylinder, and generates the time profile of the upward pressure wave and the time profile of the downward pressure wave.

[0056] To reconstruct the pressure change trajectory inside and outside the hydraulic cylinder, and to further generate upward and downward pressure wave time profiles, the specific implementation steps are as follows:

[0057] Multiple pressure sensors are installed circumferentially and axially on the hydraulic cylinder structure of the hydraulic drilling rig to acquire real-time pressure changes of the medium inside the cylinder. Pressure sensors are also installed outside the cylinder at the contact point with the connecting arm to collect ambient pressure changes. Simultaneously, a displacement sensor is configured along the piston stroke direction to sense the piston's displacement. The installation positions of the sensors are arranged according to the force distribution pattern of the hydraulic cylinder structure, enabling synchronous acquisition of pressure changes at different locations over time. This provides a temporally consistent basis for the pressure responses inside and outside the hydraulic cylinder. Furthermore, by setting the acquisition frequencies of the pressure and displacement sensors to a consistent time interval, the pressure changes inside and outside the hydraulic cylinder, along with the piston displacement changes, are continuously recorded on the same time axis. Since all sensors record using a unified time series, the pressure changes inside and outside the hydraulic cylinder can be correlated through this continuous time series, providing a foundation for reconstructing the pressure change trajectory.

[0058] After acquiring synchronously collected pressure and displacement change information, the pressure change information inside the hydraulic cylinder is arranged chronologically to form a continuous pressure sequence on the time axis. Similarly, the pressure changes at external pressure measurement points are arranged chronologically to form another continuous pressure sequence. During this process, piston displacement information recorded by displacement sensors is used as auxiliary information for pressure changes, ensuring a clear correspondence between the pressure changes of the internal medium at different displacement stages and the piston position, thus clarifying the spatiotemporal correlation of pressure changes within the hydraulic cylinder. In this way, the temporal characteristics of pressure propagation in the hydraulic gap, the continuity of pressure rise and fall, and the correspondence between pressure amplitude and the hydraulic cylinder's motion state are fully reflected in the aforementioned time sequence. Since the pressure changes inside the hydraulic cylinder are influenced by piston speed, hydraulic medium flow state, and external load changes, the pressure time sequence constructed using the above synchronous acquisition method can accurately represent the dynamic pressure changes of the hydraulic cylinder during drilling.

[0059] After establishing the internal and external pressure time series of the hydraulic cylinder, the continuous changing trends of the pressure increase and decrease phases in the pressure time series are distinguished, allowing the internal pressure change trajectory to form different segments according to the pressure rise and fall paths. In this way, the internal pressure change forms continuous upward and downward pressure change processes in the time series. Simultaneously, by using the corresponding moments in the external pressure change sequence, the external pressure change is compared with the internal pressure change at the same time segment, ensuring consistency between the external and internal pressure change trajectories in the time dimension. This constructs the external pressure change trajectory on the time axis. Since the internal and external pressure change trajectories are correlated through time series and displacement information, the upward and downward pressure change segments in the internal pressure change trajectory can be independently divided according to time sequence, forming continuous upward and downward pressure wave time profiles. This provides a fundamental data structure directly usable for subsequent rhythm extraction and state identification of pressure changes.

[0060] After obtaining the time profiles of the upward and downward pressure waves, the pressure change trends formed by the upward pressure waves in the internal pressure change trajectory of the hydraulic cylinder are treated as one continuous time period, and the pressure change trends formed by the downward pressure waves in the same trajectory are treated as another continuous time period. This allows the complete pressure change process of the hydraulic cylinder to be distinguished according to the difference in pressure wave direction, thus providing complete time profile support for subsequent analysis of pressure wave direction changes, pressure wave amplitude changes, and pressure wave periodic changes. Simultaneously, by comparing the external and internal pressure change trajectories of the hydraulic cylinder in the same time segment, the propagation state of the external and internal pressure waves is kept consistent, thereby forming a continuously traceable pressure wave change profile in the time dimension. The upward and downward pressure wave time profiles obtained in this way possess complete temporal continuity and pressure direction change characteristics, which can be used to further identify possible jump points during pressure wave direction changes, superposition between pressure waves, and the variation patterns of pressure amplitude during pressure wave propagation, providing directly usable basic data for subsequent processing.

[0061] S2, based on the time profiles of the upward and downward pressure waves, extract the extreme value rhythm of the pressure wave, mark the moment when the direction of the pressure wave changes, and extend the extreme value rhythm of the pressure wave to form the anti-phase correction risk time band;

[0062] To enable the upward and downward pressure wave time profiles to identify extreme value changes in the pressure wave during propagation and to further determine the moments when the pressure wave direction may abruptly change, thereby constructing a reverse-phase correction risk time band for subsequent hydraulic control, this step is accomplished as follows:

[0063] The obtained upward and downward pressure wave time profiles are continuously unfolded chronologically, allowing the pressure rise and fall processes inside the hydraulic cylinder to form directly comparable pressure change paths on the same time axis. By identifying the continuous segments of gradually increasing pressure in the upward pressure wave time profile, the peak pressure position during each segment is marked on the time axis, ensuring a continuous extreme value distribution of the maximum pressure point during the upward movement. Simultaneously, the continuous segments of gradually decreasing pressure in the downward pressure wave time profile are identified, and the trough pressure position during the downward movement is also marked on the time axis, ensuring a corresponding extreme value distribution of the lowest pressure point during the downward movement. Since the time bases of the upward and downward pressure wave time profiles are consistent, this stage allows the pressure wave fluctuation process to form a complete extreme value rhythm basis, providing a continuous time carrier for further extraction of the pressure wave propagation rhythm.

[0064] After obtaining the peak pressure position of the upward pressure wave and the trough pressure position of the downward pressure wave, the pressure change trend between different extreme points is continuously observed. This allows the extreme values ​​of the pressure wave during the upward process to form a continuous sequence, and the extreme values ​​during the downward process to also form a continuous sequence, making the two comparable on the time axis. Based on this, by analyzing the direction of pressure change between continuous extreme values, the direction change of the pressure wave when it transitions from upward to downward and from downward to upward can form obvious direction reversal points in the time series. In this way, when the pressure wave changes direction due to changes in the load state of the medium inside the hydraulic cylinder during propagation, this direction change will form obvious jump moments in the extreme value rhythm of the pressure wave. In identifying these transition moments, the peak value of the upward pressure wave is correlated with the trough value of the immediately following downward pressure wave, thus clearly marking the turning point of the pressure wave direction from upward to downward on the time axis. Simultaneously, the trough value of the downward pressure wave is correlated with the peak value of the immediately following upward pressure wave, again clearly marking the turning point of the pressure wave direction from downward to upward on the time axis. By continuously extracting these transition moments, all time points where the pressure wave direction changes form a stable sequence of direction changes during pressure variations, providing a solid foundation for further constructing a risk region that can describe the conditions under which hydraulic shocks occur.

[0065] After obtaining the moment of pressure wave direction change, the pressure wave extreme rhythm is extended over a continuous time period, thus uniformly incorporating the time range before and after the pressure wave direction change into the risk assessment scope. Since the medium inside the hydraulic cylinder is often in an energy conversion phase when the pressure wave direction changes, the pressure waves are prone to superposition due to inconsistent directions, potentially leading to instantaneous high-amplitude pressure changes inside the hydraulic cylinder. Therefore, the pressure wave direction change moment is extended forward and backward for a period of time, creating a physically meaningful time extension region around the change moment. When constructing this extension region, the rising and falling rates of pressure change in the upward and downward pressure wave time profiles are referenced to ensure that the extension region covers the entire time period during which energy accumulation may occur during the pressure wave direction change, thereby ensuring that the important stages before and after the direction reversal are within the identifiable range. In this way, the pressure wave extreme rhythm not only identifies the critical moment of pressure wave direction change but also forms a continuous time range in the time dimension that can describe potential pressure instability behavior.

[0066] After obtaining the extended regions, by merging the extended regions corresponding to all pressure wave direction jump moments in chronological order, each time range with potential pressure direction instability can be linked into a continuous risk region. By overlapping these risk regions, adjacent risk regions with similar time periods form a more complete continuous time band on the time axis. This continuous time band includes all time periods where pressure wave direction confusion, inconsistent pressure rise and fall rhythms, and possible superposition between upward and downward pressure waves may occur during propagation. This continuous time band constitutes the anti-phase correction risk time band. By constructing the anti-phase correction risk time band, the time periods most likely to experience pressure wave direction inconsistency, high-amplitude pressure impacts, and structural stress increases during hydraulic cylinder internal pressure changes can form clearly identifiable continuous regions in the time series. This provides a clear temporal basis for subsequently mapping the anti-phase correction risk time band to the structural stress change process and using it for subsequent hydraulic control. It enables a close connection between the pressure wave propagation law and the structural loading law in subsequent steps, laying a necessary foundation for further realizing the self-correction of drilling parameters of the hydraulic drilling rig under complex working conditions.

[0067] S3, Strain sensing units are installed at key locations in the drill frame structure to convert the reverse phase correction risk time zone into a structural stress distribution curve, and the structural region that has entered the fatigue limit is identified based on the structural stress distribution curve.

[0068] To ensure that the risk time zone of the reverse phase correction corresponds to the actual stress change of the drill frame structure during the loading process, thereby forming a structural stress distribution curve that can be used to identify the fatigue region of the structure, this step is accomplished through the following technical means;

[0069] Strain sensing units are deployed throughout the overall drill frame structure according to the structural stress path, ensuring coverage of the main load-bearing components, stress concentration points, connection nodes, and areas potentially subjected to alternating loads. The placement of the strain sensing units is selected based on the drill frame's structural configuration, enabling each unit to record strain changes at different spatial locations, thus reflecting the actual structural response of the drill frame during pressure changes within the hydraulic cylinder. To ensure accurate correspondence between the strain data and the anti-phase correction risk time zone, the strain sensing units and the anti-phase correction risk time zone constructed in the previous step share the same time reference. This unified time reference ensures that the time point corresponding to each strain sensing unit within the anti-phase correction risk time zone is closely aligned with the time point of pressure wave direction change, achieving a consistent time mapping between the strain change trajectory of the drill frame structure and the pressure wave change trajectory within the hydraulic cylinder. In this way, the raw strain data obtained by the strain sensing units can be accurately superimposed on the anti-phase correction risk time zone on the time axis, laying the foundation for subsequent construction of the structural stress distribution curve.

[0070] After obtaining the continuous strain change data recorded by the strain sensing units, by mapping each time period in the inverse correction risk time band to the strain change curve of each strain sensing unit, a correspondence can be established between each risk period and the strain change of the drill frame structure at the same moment. Since the inverse correction risk time band consists of the pressure wave direction jump moment and its preceding and following extended time periods, this time band includes several key stages in the time dimension, including the potential for unstable behavior of the pressure wave inside the hydraulic cylinder, the potential for uneven propagation of the pressure wave within the structure, and the potential coupling of the pressure wave with the structure's inherent vibrations. By mapping these key stages to the strain records of the strain sensing units, the sudden increase, decrease, and continuous fluctuation of strain amplitude that occur in the drill frame structure during pressure wave propagation can be fully reflected in the strain change trajectory. In this way, the true load state of the drill frame structure within the inverse correction risk time band can be fully revealed in the time dimension, providing a direct basis for subsequent stress calculation processing for various change characteristics in the strain change trajectory.

[0071] After obtaining the correspondence between the anti-phase correction risk time zone and the strain change trajectories of each strain sensing unit, the strain change trajectories are converted into structural stress change trajectories according to material mechanics relationships, allowing the stress state of the drill frame structure within the risk time zone to be presented as a stress distribution. The stress distribution curve converts strain values ​​at different time points into corresponding stress values ​​according to material properties, enabling the magnitude of stress, rate of stress change, and amplitude of stress fluctuations within the anti-phase correction risk time zone of the drill frame structure to be displayed on the same curve. Since the drill frame structure may experience multiple pressure wave influences within the anti-phase correction risk time zone, the stress distribution curve will exhibit multiple high-stress segments, multiple stress fluctuation groups, and multiple continuous change segments of stress increase or decrease in the time series. Analyzing these continuous change segments allows for a clear presentation of the stress state borne by the drill frame structure in different time segments, thus clearly locating the potential stress concentration locations in different areas of the drill frame structure within the anti-phase correction risk time zone. Furthermore, since the strain sensing units are deployed at the critical stress locations of the structure, the stress distribution curves can reflect the stress differences in different structural regions, allowing the stress gradient of the drill frame within the risk time zone to be presented, thus providing support for further assessment of the structural fatigue state.

[0072] After obtaining the structural stress distribution curve, the high-stress sections in the curve are compared with material fatigue limit data to identify areas in the drill frame structure where the actual stress exceeds the fatigue limit on a time axis. During this identification process, based on the duration of continuous high-stress segments in the stress distribution curve, the variation in stress amplitude, and the frequency of high-stress segments appearing at different structural locations, areas where the drill frame structure may enter the fatigue limit after experiencing multiple stress fluctuations within the anti-phase correction risk time zone are clearly marked. Since the anti-phase correction risk time zone covers all possible time segments where pressure superposition occurs due to changes in pressure wave direction, the structural stress distribution curve can fully present the stress accumulation process of the structure during these periods, allowing the fatigue development trend that may occur during loading to be reflected in the time series. In this way, the area where the drill frame structure enters the fatigue limit can be effectively identified, providing a direct positioning basis for subsequent hydraulic adjustment steps. This enables hydraulic adjustments to be made according to the actual stress conditions in the fatigue area, thus making drilling operations of the hydraulic drilling rig more stable and reliable under complex geological conditions.

[0073] S4. Based on the structural region that has entered the fatigue limit, hydraulic adjustment rules are constructed, and the time band of reverse correction risk is divided into a flexible slow rise segment and a flexible slow fall segment, generating a segmented hydraulic control sequence for suppressing pressure peaks.

[0074] To ensure that the structural region approaching the fatigue limit can be aligned with the risk time zone of the reverse correction, thereby constructing hydraulic regulation rules suitable for the drilling process of a hydraulic drilling rig and forming a segmented hydraulic control sequence that can be used to suppress pressure peaks, this step is accomplished in the following manner:

[0075] After obtaining the structural stress distribution curves and identifying the structural regions that have entered the fatigue limit, the time periods corresponding to these structural regions are compared one by one with the inverse correction risk time zones. This ensures that each time segment within the inverse correction risk time zone corresponds to the stress state of the drill frame structure within the same time segment. Since structural regions entering the fatigue limit often experience sustained high stress fluctuations, excessively rapid stress changes, or stress peaks too close to the material limit within the inverse correction risk time zone, it is necessary to prioritize the stress importance of each risk time segment at this stage. This ensures that the risk segments corresponding to the structural regions entering the fatigue limit are clearly identified within the entire risk time zone. In this way, the inverse correction risk time zone transforms from a time region that merely describes the unstable behavior of hydraulic pressure waves into a comprehensive time region that directly reflects the structural stress state and fatigue development trend, giving the hydraulic regulation rules a precise target.

[0076] After identifying the corresponding locations of structural regions approaching the fatigue limit within the inverse correction risk time zone, the stress variation trends of these structural regions within the risk time zone are analyzed to fully extract the stress growth and stress decay phases exhibited by the pressure wave during its influence on the structure. The stress growth phase often corresponds to the upward change of the pressure wave inside the hydraulic cylinder, while the stress decay phase often corresponds to the downward change of the pressure wave inside the hydraulic cylinder. Therefore, it is necessary to align these structural stress variation characteristics with the time structure of the inverse correction risk time zone, ensuring that the time period of the upward movement of the pressure wave coincides with the time period when the structural stress shows an upward trend, and that the time period of the downward movement of the pressure wave matches the time period when the structural stress shows a downward trend. In this way, the stress variation process of the structural region approaching the fatigue limit within the inverse correction risk time zone is divided into the flexible gradual rise requirement time period and the flexible gradual fall requirement time period for the pressure wave to influence the structure. The flexible gradual increase demand period is used to limit the rate of pressure increase within the hydraulic cylinder, preventing further stress buildup due to excessively rapid pressure rise. Conversely, the flexible gradual decrease demand period is used to limit excessively rapid unloading during pressure reduction, preventing transient reverse impacts caused by sudden pressure drops. Through this correspondence, time segments within the inverse phase correction risk time zone are endowed with flexible gradual increase and decrease properties, providing the foundation for constructing subsequent segmented hydraulic control sequences.

[0077] After obtaining the flexible rise and fall sections, the loading state of the structural region approaching the fatigue limit is classified, so that different degrees of fatigue risk correspond to different intensities of hydraulic adjustment requirements. In this stage, by analyzing the stress change amplitude, stress change rate, and stress fluctuation direction in the structural stress distribution curve, each flexible rise and fall section can form a corresponding pressure adjustment range. For regions with mild fatigue tendency, a smaller pressure rise limit is needed in the flexible rise section, and a gentler pressure fall limit is needed in the flexible fall section. For regions with moderate fatigue tendency, the rise and fall behavior of the pressure wave needs to be more strictly limited to further control the fluctuation amplitude of the pressure wave within the risk time band. For regions with severe fatigue tendency and continuously approaching the material limit, the pressure rise rate needs to be significantly reduced in the flexible rise section, and the pressure fall process needs to be prolonged in the flexible fall section, so that the change of the pressure wave inside the hydraulic cylinder is as smooth as possible throughout the risk time band, thus allowing the structure sufficient buffer time. In this way, the flexible rise and descent sections are not only clearly divided on the time axis, but also differentiated in terms of pressure regulation intensity. This allows the reverse correction risk time zone to be transformed into a continuous time structure with clear pressure regulation meaning, providing an operable basis for generating segmented hydraulic control sequences.

[0078] After the control attributes of the flexible rise and fall sections are determined, the entire anti-phase correction risk time zone can be converted into a continuous control sequence composed of multiple pressure control segments by combining the various control attributes in chronological order. This continuous control sequence consists of multiple flexible rise segments and multiple flexible fall segments alternating, ensuring that the pressure change inside the hydraulic cylinder within the anti-phase correction risk time zone follows a gradual smoothing, buffering, and transition pattern, thereby suppressing pressure peaks that could impact the structure during pressure wave directional changes. The segmented hydraulic control sequence generated in this way covers all critical positions during pressure wave propagation, gradually limiting pressure as it enters the risk time zone, providing necessary buffering during pressure wave directional jumps, and gradually restoring to the normal pressure change trajectory upon leaving the risk time zone. This ensures that the pressure regulation behavior of the hydraulic drilling rig is continuous, stable, and targeted throughout the entire anti-phase correction risk time zone, providing a complete time and pressure basis for the next step of implementing breathing-type hydraulic energy release, and enabling the hydraulic drilling rig to achieve a more stable pressure control process during drilling operations under complex conditions.

[0079] S5 triggers a breathing hydraulic energy release ring based on the segmented hydraulic control sequence within the risk time zone of the reverse phase correction. By interfering with the superposition relationship between the upward pressure wave and the downward pressure wave through short-cycle alternating micro-depressurization and micro-pressurization, the drill frame structure is kept in the safe operating range during continuous vibration.

[0080] After obtaining the segmented hydraulic control sequence, in order to effectively interfere with the propagation behavior of the pressure wave inside the hydraulic cylinder during the reverse-phase correction risk time band, thereby avoiding the pressure peak caused by the superposition of the upward and downward pressure waves when the direction changes, a breathing hydraulic energy release ring is implemented in the following way:

[0081] After entering the risk time zone of the reverse correction, by mapping the flexible gradual rise and descent segments in the segmented hydraulic control sequence to different time segments within the risk time zone, the internal pressure of the hydraulic cylinder enters a smooth transition state before a directional change occurs. In this stage, by mapping the flexible gradual rise segment to the time segment where the pressure may rise, the internal pressure of the hydraulic cylinder is constrained within a controllable range during the upward phase, preventing excessive pressure rise that could further increase structural stress. Simultaneously, by mapping the flexible descent segment to the time segment where the pressure may fall, the internal pressure of the hydraulic cylinder is prevented from excessively depressurizing during the downward phase, avoiding a sudden pressure drop that could lead to a reverse impact. In this way, the segmented hydraulic control sequence establishes a flexible boundary for pressure changes at the beginning of the risk time zone of the reverse correction, ensuring that the pressure wave of the medium inside the hydraulic cylinder is adjusted to a stable range before reaching the jump point, creating the necessary pressure buffering conditions for triggering the breathing hydraulic energy release ring.

[0082] After the segmented hydraulic control sequence and the reverse-phase correction risk time zone are aligned, short-cycle micro-amplitude pressure adjustments are inserted between the flexible rise and descent sections. This allows the internal pressure of the hydraulic cylinder to continuously undergo alternating micro-pressure relief and micro-pressure increases within a short period. This alternation must be performed while maintaining continuous pressure changes, briefly disturbing the natural propagation path of the pressure wave and causing a shift in its energy transfer trajectory within the internal medium. Since the reverse-phase correction risk time zone covers the critical period of pressure wave direction change, the introduction of alternating micro-pressure relief and micro-pressure increases during this period prevents the pressure wave from maintaining its original energy superposition pattern during propagation. This disperses the upward and downward pressure waves at the point of imminent superposition, preventing the energy carried by the pressure wave near the transition point from forming a concentrated effect. In this way, the pressure wave cannot form a destructive pressure superposition during the extreme phase of direction change, providing necessary protection for the drill frame structure during the influence of the pressure wave.

[0083] After the short-cycle micro-decompression and micro-pressurization actions alternate continuously, by ensuring that these alternating actions are synchronized throughout the risk correction time zone, the pressure wave inside the hydraulic cylinder is continuously disturbed and dispersed throughout the entire risk period. In this stage, the micro-decompression action is reinforced in the flexible ascending section, limiting the energy growth rate of the pressure wave during its upward phase, thus preventing excessive energy input when it reaches the structural end. Simultaneously, the micro-pressurization action is extended in the flexible descending section, making the energy release process during the descent phase slower, preventing reverse impact from the medium inside the hydraulic cylinder during pressure drop. Since both micro-decompression and micro-pressurization actions are triggered based on a segmented hydraulic control sequence, these actions have a clear execution position within the risk correction time zone, ensuring that the pressure wave remains under control throughout the structural load-bearing process. In this way, the pressure changes inside the hydraulic cylinder form continuous breathing-like fluctuations within the risk time zone, causing the pressure wave to exhibit a state of being uniformly cut, repeatedly disturbed, and dispersed multiple times along its propagation path. This prevents the pressure peak from accumulating and ensures that the structure does not bear excessive alternating loads in a short period of time.

[0084] After all the actions of the breathing hydraulic energy release ring are performed within the reverse-phase correction risk time zone, the internal pressure of the hydraulic cylinder gradually returns to its normal pressure trajectory as it leaves the risk time zone, ensuring that the drill frame structure remains within its tolerable range after continuous vibration. During this stage, by gradually converging the flexible rise and fall sections at the end of the time zone, the pressure wave is no longer strongly disturbed by the micro-pressure relief and micro-pressure increase actions when exiting the risk time zone. This allows the internal pressure of the hydraulic cylinder to gradually return to its normal operating rhythm, enabling the hydraulic drilling rig to smoothly return to its normal drilling state after suppressing the pressure peak. Since the reverse-phase correction risk time zone has a clear correspondence with the structural region entering its fatigue limit, the continuous pressure buffer formed by the breathing hydraulic energy release ring during its execution can directly reduce the structural stress, preventing the structure from being under unfavorable alternating load conditions for extended periods. In this way, the load on the drill frame structure is controlled within a safe operating range throughout the entire risk period. Even if the pressure wave propagation exhibits unstable behavior under complex geological conditions, the structure can remain stable through breathing hydraulic energy release, making the entire drilling process more reliable and continuous, and providing a more stable pressure control basis for the continuous drilling of hydraulic drilling rigs in complex formations.

[0085] This invention utilizes a breathing-style hydraulic energy release during the risk period of the reverse phase correction, continuously disturbing the pressure wave along its propagation path. This prevents high-amplitude energy concentration during the direction change phase of the pressure wave, making the energy transfer of the pressure wave inside the hydraulic cylinder more uniform and controllable. Because the upward and downward pressure waves cannot superimpose within the risk period, the alternating load on the structure is significantly reduced, allowing the drill frame to remain within a safe operating range under continuous vibration. This results in a smoother stress distribution throughout the drilling process, effectively mitigating fatigue stress accumulation caused by pressure fluctuations and improving the dynamic stability of the drilling process.

[0086] This invention integrates the structural region approaching its fatigue limit with the risk time zone of the reverse correction, enabling the hydraulic adjustment process to proactively adjust according to the actual stress on the structure. This prevents pressure waves from changing beyond the structure's bearing capacity during propagation, flexibly limiting both pressure rises and falls, providing the structure with a longer stress buffer time, and enhancing the overall impact resistance of the drill frame in complex geological formations. By employing segmented hydraulic control sequences to regulate pressure fluctuations, the hydraulic medium remains controllable within the risk time zone, ensuring better stability of the drilling rig throughout the drilling process and improving the service life and operational reliability of the equipment in complex geological formations.

[0087] This invention provides, for example Figure 2The self-correction system for drilling parameters of a hydraulic drilling rig under complex geological conditions, as shown, includes a pressure wave time-domain reconstruction module, an anti-phase correction risk identification module, a structural stress mapping and fatigue identification module, a hydraulic segmented control sequence generation module, and a breathing-type hydraulic energy release regulation module.

[0088] The pressure wave time domain reconstruction module reconstructs the pressure change trajectory inside and outside the hydraulic cylinder by synchronously acquiring data from multiple pressure sensors and displacement sensors, generating an upward pressure wave time profile and a downward pressure wave time profile.

[0089] The anti-phase correction risk identification module extracts the extreme value rhythm of pressure waves based on the time profiles of upward and downward pressure waves, marks the moment when the direction of pressure waves jumps, and extends the extreme value rhythm of pressure waves to form an anti-phase correction risk time band.

[0090] The structural stress mapping and fatigue identification module deploys strain sensing units at key locations in the drill frame structure, converts the inverse correction risk time zone into a structural stress distribution curve, and identifies the structural region that has entered the fatigue limit based on the structural stress distribution curve.

[0091] The hydraulic segmented control sequence generation module constructs hydraulic adjustment rules based on the structural region entering the fatigue limit, divides the reverse correction risk time zone into a flexible gradual rise segment and a flexible gradual fall segment, and generates a segmented hydraulic control sequence to suppress pressure peaks.

[0092] The breathing hydraulic energy release control module triggers the breathing hydraulic energy release ring according to the segmented hydraulic control sequence within the risk time zone of the reverse phase correction. By interfering with the superposition relationship between the upward pressure wave and the downward pressure wave through short-cycle alternating micro-depressurization and micro-pressurization, the drill frame structure is kept in the safe operating range during continuous vibration.

[0093] The self-correction method for drilling parameters of hydraulic drilling rigs under complex geological conditions provided in this embodiment of the invention is implemented through the aforementioned self-correction system for drilling parameters of hydraulic drilling rigs under complex geological conditions. For details of the specific methods and procedures of the self-correction system for drilling parameters of hydraulic drilling rigs under complex geological conditions, please refer to the embodiment of the self-correction method for drilling parameters of hydraulic drilling rigs under complex geological conditions, which will not be repeated here.

[0094] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A self-correction method for drilling parameters of hydraulic drilling rigs under complex geological conditions, characterized in that, Includes the following steps: S1, through the synchronous acquisition of multiple pressure sensors and displacement sensors, reconstructs the pressure change trajectory inside the hydraulic cylinder and the pressure change trajectory outside the hydraulic cylinder, and generates the time profile of the upward pressure wave and the time profile of the downward pressure wave. S2, based on the time profiles of the upward and downward pressure waves, extract the extreme value rhythm of the pressure wave, mark the moment when the direction of the pressure wave changes, and extend the extreme value rhythm of the pressure wave to form the anti-phase correction risk time band; S3, Strain sensing units are installed at key locations in the drill frame structure to convert the reverse phase correction risk time zone into a structural stress distribution curve, and the structural region that has entered the fatigue limit is identified based on the structural stress distribution curve. S4. Based on the structural region that has entered the fatigue limit, hydraulic adjustment rules are constructed, and the time band of reverse correction risk is divided into a flexible slow rise segment and a flexible slow fall segment, generating a segmented hydraulic control sequence for suppressing pressure peaks. S5 triggers a breathing hydraulic energy release ring based on the segmented hydraulic control sequence within the risk time zone of the reverse phase correction. By interfering with the superposition relationship between the upward pressure wave and the downward pressure wave through short-cycle alternating micro-depressurization and micro-pressurization, the drill frame structure is kept in the safe operating range during continuous vibration.

2. The self-correction method for drilling parameters of hydraulic drilling rigs under complex geological conditions according to claim 1, characterized in that, The steps for generating the time profiles of the upward and downward pressure waves are as follows: Multiple pressure sensors are installed in the circumferential and axial directions of the hydraulic cylinder structure, and a pressure sensor is installed outside the hydraulic cylinder. At the same time, a displacement sensor is installed in the piston stroke direction of the hydraulic cylinder, so that the pressure change information inside the hydraulic cylinder, the pressure change information outside the hydraulic cylinder, and the piston displacement change information are continuously recorded on the same time axis. The pressure change information inside the hydraulic cylinder and the pressure change information outside the hydraulic cylinder are arranged in chronological order to make the pressure change process correspond to the piston displacement, thereby generating the pressure time series inside the hydraulic cylinder and the pressure time series outside the hydraulic cylinder. Based on the pressure rise and pressure fall phases in the internal pressure time series and external pressure time series of the hydraulic cylinder, continuous upward pressure change process and downward pressure change process are formed respectively, so that the internal pressure change trajectory and the external pressure change trajectory are consistent in the time dimension. During continuous pressure changes, the upward pressure range and the downward pressure range are distinguished, so that the pressure change trajectory inside the hydraulic cylinder generates an upward pressure wave time profile and a downward pressure wave time profile.

3. The self-correction method for drilling parameters of hydraulic drilling rigs under complex geological conditions according to claim 2, characterized in that, The steps for generating the reverse correction risk time band are as follows: The time profiles of the upward pressure wave and the downward pressure wave are continuously unfolded in chronological order, so that the pressure rise process and the pressure fall process form a comparable pressure change path on the same time axis, and the positions of pressure peak and pressure trough are marked respectively. After obtaining the pressure peak and pressure trough positions, the direction of pressure change between consecutive extreme values ​​is sorted out so that the moment when the pressure wave direction changes from upward to downward and from downward to upward forms the moment of directional jump on the time axis. After obtaining the moment of directional change, the moment of directional change is extended forward and backward according to the time period, so that a time extension region that can cover the energy conversion phase of the pressure wave is formed around the moment of change. After obtaining the time extension region, all time extension regions are merged in chronological order so that adjacent extension regions form a continuous time band, thus constituting the reverse correction risk time band.

4. The self-correction method for drilling parameters of hydraulic drilling rigs under complex geological conditions according to claim 3, characterized in that, When forming the anti-phase correction risk time zone, the starting point of the time extension region is limited to the stable interval of the continuous pressure rise segment before the pressure wave direction changes, and the ending point of the time extension region is limited to the stable interval of the continuous pressure fall segment after the pressure wave direction changes, so that the anti-phase correction risk time zone covers the entire process of pressure wave energy conversion and maintains time continuity.

5. The self-correction method for drilling parameters of hydraulic drilling rigs under complex geological conditions according to claim 3, characterized in that, The steps to convert the inverse phase correction risk time band into a structural stress distribution curve and identify the structural region entering the fatigue limit are as follows: Strain sensing units are installed in the main load-bearing components, stress concentration locations, connection nodes, and areas bearing alternating loads of the overall drill frame structure, so that the strain changes obtained by the strain sensing units and the anti-phase correction risk time zone form a consistent time mapping using a unified time reference. After obtaining the strain change, the time periods in the reverse phase correction risk time zone are mapped to the strain change trajectory of each strain sensing unit, so that the strain fluctuations of the drill frame structure in the risk time zone form a continuous correspondence on the time axis. After the strain change trajectory is formed, it is converted into a structural stress change trajectory according to the material mechanics relationship, so that the stress magnitude, stress change rate and stress fluctuation amplitude of the drill frame structure in the reverse phase correction risk time zone form a structural stress distribution curve. After obtaining the structural stress distribution curve, the continuous high stress segment is compared with the material fatigue limit data, so that the structural region where the drill frame structure reaches the fatigue limit within the reverse phase correction risk time zone can be identified.

6. The self-correction method for drilling parameters of hydraulic drilling rigs under complex geological conditions according to claim 5, characterized in that, When forming the structural stress distribution curve, the continuous strain fluctuations within the risk time zone are corrected by corresponding reverse phase correction, and the stress rise segment and stress fall segment are kept as continuous change trajectories, so that the structural stress inflection point can be clearly marked on the time axis, thereby improving the accuracy of identifying the structural region entering the fatigue limit.

7. The self-correction method for drilling parameters of hydraulic drilling rigs under complex geological conditions according to claim 5, characterized in that, The steps for constructing hydraulic adjustment rules and generating segmented hydraulic control sequences based on the structural region that has reached its fatigue limit are as follows: After obtaining the structural stress distribution curve and identifying the structural region that has entered the fatigue limit, the time period corresponding to the structural region that has entered the fatigue limit is matched with the anti-phase correction risk time zone, so that the anti-phase correction risk time zone has a temporal meaning that reflects the stress state of the structure. After completing the corresponding analysis, the stress change trend of the structural region that has entered the fatigue limit in the reverse correction risk time zone will be analyzed, and the stage of pressure wave affecting the structure will be divided into the flexible rise demand period and the flexible fall demand period. After obtaining the flexible rise and flexible fall demand periods, different pressure adjustment intensities are formed based on the stress change amplitude and stress change rate in the structural stress distribution curve, so that the flexible rise and flexible fall sections have clear adjustment attributes on the time axis. After determining the regulation attributes, by combining the flexible rise segment and the flexible fall segment in time sequence, the reverse phase correction risk time band is formed into a continuous regulation sequence consisting of multiple pressure regulation segments, and a segmented hydraulic control sequence for suppressing pressure peaks is generated.

8. The self-correction method for drilling parameters of hydraulic drilling rigs under complex geological conditions according to claim 7, characterized in that, When forming a segmented hydraulic control sequence, the pressure rise limit of the flexible rise section and the pressure fall limit of the flexible fall section are gradually increased according to the strength of the structural stress. This allows the structural region that has entered the fatigue limit to obtain a higher level of buffer constraint within the risk time zone of the reverse correction, thereby making the pressure change form a smoother transition process within the continuous control segment.

9. The self-correction method for drilling parameters of hydraulic drilling rigs under complex geological conditions according to claim 7, characterized in that, The steps for triggering the breathing hydraulic energy release ring based on the segmented hydraulic control sequence within the reverse correction risk time band are as follows: After entering the risk time zone of the reverse correction, the flexible slow rise segment and the flexible slow fall segment in the segmented hydraulic control sequence are mapped to different time segments in the risk time zone, so that the internal pressure of the hydraulic cylinder enters a smooth transition state before the direction changes. After the corresponding action is completed, short-cycle micro-depressurization and micro-pressurization actions are performed between the flexible rise section and the flexible fall section to disturb the energy transmission path of the pressure wave and avoid pressure superposition. After the alternation of micro-depressurization and micro-pressurization is formed, the alternation action is continuously advanced within the anti-phase correction risk time band, so that the pressure wave is uniformly cut and dispersed during the propagation process, thereby limiting the formation of pressure peaks. After the alternating action ends, the internal pressure of the hydraulic cylinder gradually returns to the normal pressure trajectory when it leaves the risk zone of the reverse correction, so that the drill frame structure remains in the safe operating range during continuous vibration.

10. A self-correction system for drilling parameters of a hydraulic drilling rig in complex geological conditions, used to implement the self-correction method for drilling parameters of a hydraulic drilling rig in complex geological conditions as described in any one of claims 1-9, characterized in that, It includes a pressure wave time-domain reconstruction module, an anti-phase correction risk identification module, a structural stress mapping and fatigue identification module, a hydraulic segmented control sequence generation module, and a breathing-type hydraulic energy release regulation module: The pressure wave time domain reconstruction module reconstructs the pressure change trajectory inside and outside the hydraulic cylinder by synchronously acquiring data from multiple pressure sensors and displacement sensors, generating an upward pressure wave time profile and a downward pressure wave time profile. The anti-phase correction risk identification module extracts the extreme value rhythm of pressure waves based on the time profiles of upward and downward pressure waves, marks the moment when the direction of pressure waves jumps, and extends the extreme value rhythm of pressure waves to form an anti-phase correction risk time band. The structural stress mapping and fatigue identification module deploys strain sensing units at key locations in the drill frame structure, converts the inverse correction risk time zone into a structural stress distribution curve, and identifies the structural region that has entered the fatigue limit based on the structural stress distribution curve. The hydraulic segmented control sequence generation module constructs hydraulic adjustment rules based on the structural region entering the fatigue limit, divides the reverse correction risk time zone into a flexible gradual rise segment and a flexible gradual fall segment, and generates a segmented hydraulic control sequence to suppress pressure peaks. The breathing hydraulic energy release control module triggers the breathing hydraulic energy release ring according to the segmented hydraulic control sequence within the risk time zone of the reverse phase correction. By interfering with the superposition relationship between the upward pressure wave and the downward pressure wave through short-cycle alternating micro-depressurization and micro-pressurization, the drill frame structure is kept in the safe operating range during continuous vibration.

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