A deviation correction method for drilling construction

Abstract

The invention relates to the technical field of drilling construction, and in particular to a deviation correction method for drilling construction. The invention determines a drilling area, performs experimental detection operations on soil in the drilling area, determines soil displacement characterization parameters based on the average stress of the drill rod combined with the shear stress, divides the soil displacement displacement categories in the drilling area according to the soil displacement characterization parameters, and adaptively performs drilling construction, or constructs a vibration amplitude time domain curve according to the vibration amplitude of the sleeve, analyzes the average slope of each time domain curve segment to determine whether the drilling is in an abnormal stage, determines whether the drilling has a deviation tendency based on the discrete value of the abnormal stage, adjusts the drilling pressure and the drilling speed according to the discrete value of the time domain curve segment combined with the soil displacement characterization parameters; or adjusts the mud injection rate during the drilling process according to the soil displacement characterization parameters, thereby reducing the deviation of the drilling and improving the drilling quality and efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of drilling construction, and in particular to a deviation correction method for drilling construction. Background Art

[0002] With the rapid development of infrastructure construction, the requirements for construction quality and precision in the fields of pile foundation and geological drilling are getting higher and higher. During the drilling process, it is necessary to accurately obtain underground information to ensure the reliability of construction. However, due to the complexity and variability of the strata, the drilling trajectory is prone to deviation, which in turn increases the difficulty and cost of construction. Therefore, correcting the verticality of the borehole and the drilling trajectory has become an important part of the construction process.

[0003] Chinese Patent Publication No.: CN111997526A, discloses a method for monitoring the verticality of a borehole and correcting the deviation during the drilling process, and relates to the field of auxiliary devices and methods for bored pile construction. The method for monitoring the verticality of a borehole and correcting the deviation during the drilling process comprises the following steps: S1. The drilling rig is in place. After the drilling position is confirmed, the drilling rig is moved to the construction position; S2. The verticality monitoring system and the drill bit correction system are installed. First, the verticality sensor is placed inside the drill bit of the drilling rig and fixed. Three positioning transmitters and receivers are arranged on the ground around the borehole, and the three positioning transmitters and receivers are connected to the computer terminal through cables. The drill bit is selected with a hydraulic correction device. The method provided by the invention can realize real-time monitoring of the verticality of the inner wall of the borehole, and adjust the drilling direction of the drill bit in real time according to the monitoring data to realize autonomous correction.

[0004] However, the prior art still has the following problems: it does not take into account the impact of differences in soil properties on the tendency of deviation during the drilling construction process. In particular, for soils with a high tendency to deviate, the vibrations generated during the drilling construction process will affect the stability of the drill rod, which may cause the drilling trajectory to deviate, resulting in drilling deviations and reduced drilling quality. Summary of the invention

[0005] To this end, the present invention provides a correction method for drilling construction to overcome the problem in the prior art that the influence of differences in soil properties on the deviation tendency of the drilling construction process is not considered, especially for soils with a high deviation tendency, the vibration generated during the drilling construction process will affect the stability of the drill rod, which may cause the drilling trajectory to deviate, causing the drilling to deviate and reducing the quality of the drilling.

[0006] To achieve the above object, the present invention provides a deviation correction method for drilling construction, which comprises:

[0007] Step S1, determining a drilling area, and performing experimental testing operations on the soil in the drilling area, including drilling a predetermined testing depth with a drill rod, collecting the average stress of the drill rod, and collecting soil samples at the predetermined testing depth to determine the shear stress;

[0008] Step S2, determining soil displacement characterization parameters according to the mean stress of the drill rod combined with the shear stress, and classifying the soil displacement displacement category of the drilling area according to the soil displacement characterization parameters;

[0009] Step S3, performing drilling construction according to the soil displacement type of the drilling area, including:

[0010] Real-time detection of the vibration amplitude of the sleeve set on the hole wall during the drilling process, construction of the vibration amplitude time domain curve, real-time analysis of the average slope of each time domain curve segment to determine whether the drilling is in an abnormal stage, and whether the drilling has a tendency to deviate according to the discrete value of the time domain curve segment corresponding to the abnormal stage, and calculation of the correction parameter according to the soil dislocation characterization parameter combined with the discrete value of the corresponding time domain curve segment to adjust the drilling pressure and drilling speed;

[0011] Alternatively, the mud injection rate during the drilling process is adjusted according to the soil displacement characterization parameters.

[0012] Furthermore, in step S2, the soil displacement characterization parameter is determined according to formula (1):

[0013]

[0014] In formula (1), H represents the soil dislocation characterization parameter, F represents the mean stress of the drill rod, F0 represents the preset mean stress threshold of the drill rod, Fe represents the shear stress, Fe0 represents the preset standard threshold of the shear stress, α represents the stress weight coefficient of the drill rod, and β represents the shear stress weight coefficient.

[0015] Furthermore, in step S2, the soil displacement categories in the drilling area are divided into:

[0016] If the soil displacement characterization parameter is less than the preset soil displacement characterization parameter threshold, the soil displacement displacement category of the drilling area is a strong displacement category;

[0017] If the soil displacement characterization parameter is greater than or equal to a preset soil displacement characterization parameter threshold, the soil displacement displacement category of the drilling area is a weak displacement category.

[0018] Furthermore, in the step S3, according to the soil displacement category of the drilling area, the drilling construction includes:

[0019] If the soil displacement category in the drilling area is a strong displacement category, the vibration amplitude of the sleeve set on the hole wall during the drilling process is detected in real time, and a vibration amplitude time domain curve is constructed. The average slope of each time domain curve segment is analyzed in real time to determine whether the drilling is in an abnormal stage. According to the discrete value of the time domain curve segment corresponding to the abnormal stage, it is determined whether there is a displacement tendency, so as to adjust the drilling pressure and drilling speed according to the soil displacement characterization parameter combined with the discrete value of the corresponding time domain curve;

[0020] If the soil displacement category in the drilling area is a weak displacement category, the mud injection rate during the drilling process is adjusted according to the displacement tendency characterization parameters.

[0021] Furthermore, in step S3, the process of constructing the vibration amplitude time domain curve includes:

[0022] A rectangular coordinate system is constructed with time as the horizontal axis and vibration amplitude as the vertical axis;

[0023] Marking the coordinate points of the vibration amplitude at each moment in the rectangular coordinate system;

[0024] The coordinate points are connected with a smooth curve to obtain the vibration amplitude time domain curve.

[0025] Furthermore, in step S3, determining whether the drilling is in an abnormal stage includes:

[0026] If there is a time domain curve segment whose average slope is greater than a preset average slope threshold, it is determined that the drilling is in an abnormal stage.

[0027] Furthermore, in step S3, determining whether the borehole has a tendency to deviate includes:

[0028] If the discrete value of the time domain curve segment corresponding to the abnormal stage is greater than the preset discrete value threshold, it is determined that the borehole has a tendency to deviate.

[0029] Furthermore, in step S3, the correction characteristic parameter is calculated according to formula (2), including:

[0030]

[0031] In formula (2), P represents the correction parameter, H represents the soil displacement parameter, H0 represents the preset soil displacement parameter threshold, L represents the discrete value of the time domain curve segment, and LO represents the preset discrete value threshold of the time domain curve segment.

[0032] Furthermore, in step S3, adjusting the drilling pressure and the drilling speed includes:

[0033] Increasing the drilling pressure, the drilling pressure increase value is positively correlated with the deviation correction characteristic parameter;

[0034] The drilling speed is reduced, and the reduction amount of the drilling speed is positively correlated with the correction characterization parameter.

[0035] Furthermore, in step S3, adjusting the mud injection rate during the drilling process includes:

[0036] The mud injection rate is reduced, and the reduction amount of the mud injection rate is positively correlated with the soil dislocation characterization parameter.

[0037] Compared with the prior art, the present invention determines the drilling area, conducts experimental detection operations on the soil in the drilling area, determines the soil displacement characterization parameters according to the average stress of the drill rod combined with the shear stress, and divides the soil displacement displacement categories in the drilling area according to the soil displacement characterization parameters, so as to adaptively carry out drilling construction, thereby reducing the deviation of drilling and improving the drilling quality and efficiency.

[0038] In particular, the present invention determines soil displacement characterization parameters based on the average stress of the drill rod in combination with the shear stress. During the drilling construction process, when the drilling rig is started and the drill bit is running to drill, stress will be generated on the drill rod. The greater the stress on the drill rod, the harder the soil and the stronger the cohesion will be, which may lead to a decrease in the stability of the drill rod shaft and cause the borehole to deviate from the predetermined drilling trajectory. At the same time, the shear stress of the soil in the drilling area will also affect the drilling process, which may not only reduce the drilling speed, but also increase the risk of drilling deviation. Therefore, the present application characterizes the tendency of drilling deviation through soil displacement characterization parameters, provides data support for the subsequent classification of soil displacement categories in the drilling area, and adaptively performs drilling construction, thereby reducing drilling deviation and improving drilling quality and efficiency.

[0039] In particular, the present invention takes into account the impact of vibration amplitude on the drilling process, and detects the vibration amplitude of the hole wall in real time through a sensor arranged on the sleeve, and constructs a vibration amplitude time domain curve to reflect whether there is abnormal vibration in the drilling process. Excessive fluctuations in the vibration amplitude may affect the stability of the drill rod and create a risk of drilling deviation. At the same time, the discrete value of the time domain curve segment in the abnormal stage reflects the resistance of the drilling process. For example, if the discrete value is too large, it may be caused by factors such as the soil layer being too hard or the presence of large stones or empty layers in the soil layer, which in turn causes the deviation of the borehole. Therefore, the present application characterizes the abnormal tendency of the drilling process through the vibration amplitude, and provides data support for the subsequent calculation of the correction characterization parameters based on the soil dislocation characterization parameters combined with the corresponding time domain curve segments, so as to adaptively adjust the drilling pressure and drilling speed, thereby reducing the deviation of the drilling hole and improving the drilling quality and efficiency.

[0040] In particular, the present invention considers that when drilling in a drilling area under the weak offset category, the possibility of offset is relatively smaller than that in a drilling area under the strong offset category. Therefore, the influence of the mud injection rate on drilling is reduced, and the mud injection rate is avoided to be too high, causing the pipe wall to shake and causing drilling offset, thereby improving the drilling quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram of the steps of a deviation correction method for drilling construction according to an embodiment of the invention;

[0042] Figure 2 A logical decision diagram for classifying soil displacement categories in a drilling area according to an embodiment of the invention;

[0043] Figure 3 A logic decision diagram for determining whether a borehole is in an abnormal stage according to an embodiment of the invention;

[0044] Figure 4 This is a logical decision diagram for determining whether a borehole has a deviation tendency according to an embodiment of the present invention. DETAILED DESCRIPTION

[0045] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0046] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0047] See also Figures 1 to 4 As shown, Figure 1 Schematic diagram of the steps of the deviation correction method for drilling construction according to an embodiment of the present invention. Figure 2 A logical decision diagram for classifying soil displacement categories in a drilling area according to an embodiment of the invention, Figure 3 A logical decision diagram for determining whether a drilling hole is in an abnormal stage according to an embodiment of the invention, Figure 4 The present invention provides a logic determination diagram for determining whether a borehole has a tendency to deviate. The deviation correction method for drilling construction in the present invention includes:

[0048] Step S1, determining a drilling area, and performing experimental testing operations on the soil in the drilling area, including drilling a predetermined testing depth with a drill rod, collecting the average stress of the drill rod, and collecting soil samples at the predetermined testing depth to determine the shear stress;

[0049] Step S2, determining soil displacement characterization parameters according to the mean stress of the drill rod combined with the shear stress, and classifying the soil displacement displacement category of the drilling area according to the soil displacement characterization parameters;

[0050] Step S3, performing drilling construction according to the soil displacement type of the drilling area, including:

[0051] Real-time detection of the vibration amplitude of the sleeve set on the hole wall during the drilling process, construction of the vibration amplitude time domain curve, real-time analysis of the average slope of each time domain curve segment to determine whether the drilling is in an abnormal stage, and whether the drilling has a tendency to deviate according to the discrete value of the time domain curve segment corresponding to the abnormal stage, and calculation of the correction parameter according to the soil dislocation characterization parameter combined with the discrete value of the corresponding time domain curve segment to adjust the drilling pressure and drilling speed;

[0052] Alternatively, the mud injection rate during the drilling process is adjusted according to the soil displacement characterization parameters.

[0053] Specifically, as to the determination of the drilling area, those skilled in the art can make the specific determination according to the construction requirements, which will not be elaborated here.

[0054] Specifically, there is no limitation on the specific method of collecting the stress on the drill rod. For example, a pressure sensor can be set to detect the reaction force on the drill rod during the drilling process to characterize the stress. Of course, other methods can also be used, which will not be repeated here.

[0055] Specifically, there is no limitation on the specific method for determining the shear stress of the soil sample at the predetermined detection depth. For example, the soil sample is placed in a triaxial pressure chamber for a triaxial compression test to obtain the shear stress. Of course, other methods can also be used, which will not be repeated here.

[0056] Specifically, in step S2, the soil displacement characterization parameter is determined according to formula (1):

[0057]

[0058] In formula (1), H represents the soil dislocation characterization parameter, F represents the mean stress of the drill rod, F0 represents the preset mean stress threshold of the drill rod, Fe represents the shear stress, Fe0 represents the preset standard threshold of the shear stress, α represents the stress weight coefficient of the drill rod, and β represents the shear stress weight coefficient.

[0059] Specifically, in this embodiment, the mean stress threshold F0 of the drill rod and the standard threshold Fe0 of the shear stress are obtained in advance, and relevant data obtained after several drillings to the predetermined detection depth are obtained to solve the average value ΔF of the mean stress of the drill rod and the mean shear stress ΔFe. It is set that F0=r1×ΔF, Fe0=r2×ΔFe, r1 is the first precision coefficient, r2 is the second precision coefficient, 0.85<r1<1.05, 1.05<r2<1.10, α is 0.45, and β is 0.55.

[0060] The soil dislocation characterization parameter threshold H0 is selected in the interval [0.7, 0.8].

[0061] The present invention determines soil displacement characterization parameters based on the average stress of the drill rod in combination with the shear stress. During the drilling construction process, when the drilling rig is started and the drill bit is operated to drill, stress will be generated on the drill rod. The greater the stress on the drill rod, the stronger the hardness and cohesion of the soil will be, which may cause the stability of the drill rod shaft to decrease, causing the borehole to deviate from the predetermined drilling trajectory. At the same time, the shear stress of the soil in the drilling area will also affect the drilling process, which may not only reduce the drilling speed, but also increase the risk of drilling deviation. Therefore, the present application characterizes the tendency of drilling deviation through soil displacement characterization parameters, provides data support for the subsequent classification of soil displacement categories in the drilling area, and adaptively performs drilling construction, thereby reducing drilling deviation and improving drilling quality and efficiency.

[0062] Specifically, in step S2, the soil displacement categories in the drilling area are divided into:

[0063] If the soil displacement characterization parameter is less than the preset soil displacement characterization parameter threshold, the soil displacement displacement category of the drilling area is a strong displacement category;

[0064] If the soil displacement characterization parameter is greater than or equal to a preset soil displacement characterization parameter threshold, the soil displacement displacement category of the drilling area is a weak displacement category.

[0065] Specifically, in step S3, according to the soil displacement category in the drilling area, the drilling construction includes:

[0066] If the soil displacement category in the drilling area is a strong displacement category, the vibration amplitude of the sleeve set on the hole wall during the drilling process is detected in real time, and a vibration amplitude time domain curve is constructed. The average slope of each time domain curve segment is analyzed in real time to determine whether the drilling is in an abnormal stage. According to the discrete value of the time domain curve segment corresponding to the abnormal stage, it is determined whether there is a displacement tendency, so as to adjust the drilling pressure and drilling speed according to the soil displacement characterization parameter combined with the discrete value of the corresponding time domain curve;

[0067] If the soil displacement category in the drilling area is a weak displacement category, the mud injection rate during the drilling process is adjusted according to the displacement tendency characterization parameters.

[0068] Specifically, in step S3, the process of constructing the vibration amplitude time domain curve includes:

[0069] A rectangular coordinate system is constructed with time as the horizontal axis and vibration amplitude as the vertical axis;

[0070] Marking the coordinate points of the vibration amplitude at each moment in the rectangular coordinate system;

[0071] The coordinate points are connected with a smooth curve to obtain the vibration amplitude time domain curve.

[0072] Specifically, in step S3, determining whether the drilling is in an abnormal stage includes:

[0073] If there is a time domain curve segment whose average slope is greater than a preset average slope threshold, it is determined that the drilling is in an abnormal stage.

[0074] The average slope threshold X0 is selected in the interval [0.25, 0.45].

[0075] Specifically, in step S3, determining whether the borehole has a tendency to deviate includes:

[0076] If the discrete value of the time domain curve segment corresponding to the abnormal stage is greater than the preset discrete value threshold, it is determined that the borehole has a tendency to deviate.

[0077] The discrete value threshold Y0 is selected in the interval [0.2, 0.45].

[0078] The present invention takes into account the influence of vibration amplitude on the drilling process, and detects the vibration amplitude of the hole wall in real time through a sensor arranged on the sleeve, and constructs a vibration amplitude time domain curve to reflect whether there is abnormal vibration in the drilling process. If the vibration amplitude fluctuates too much, it may affect the stability of the drill rod and create the risk of drilling deviation. At the same time, the discrete value of the time domain curve segment in the abnormal stage reflects the resistance of the drilling process. For example, if the discrete value is too large, it may be caused by factors such as the soil layer being too hard or the presence of large stones or empty layers in the soil layer, which in turn causes the deviation of the borehole. Therefore, the present application characterizes the abnormal tendency of the drilling process through the vibration amplitude, and provides data support for the subsequent calculation of the correction characterization parameters based on the soil dislocation characterization parameters combined with the corresponding time domain curve segments, so as to adaptively adjust the drilling pressure and drilling speed, thereby reducing the deviation of the drilling hole and improving the drilling quality and efficiency.

[0079] Specifically, in step S3, the correction characteristic parameter is calculated according to formula (2), including:

[0080]

[0081] In formula (2), P represents the correction parameter, H represents the soil displacement parameter, H0 represents the preset soil displacement parameter threshold, L represents the discrete value of the time domain curve segment, and LO represents the preset discrete value threshold of the time domain curve segment.

[0082] The correction parameter threshold P0 is selected in the interval [1.25,1.45].

[0083] Specifically, in step S3, adjusting the drilling pressure and the drilling speed includes:

[0084] Increasing the drilling pressure, the drilling pressure increase value is positively correlated with the deviation correction characteristic parameter;

[0085] The drilling speed is reduced, and the reduction amount of the drilling speed is positively correlated with the correction characterization parameter.

[0086] In this embodiment, optionally,

[0087] Compare the correction parameter P with the first correction parameter P1 and the second correction parameter P2.

[0088] If P>P2, the drilling pressure increase value is determined to be the first drilling pressure increase value f1, and f1=0.4f0;

[0089] If P1≤P≤P2, the drilling pressure increase value is determined to be the second drilling pressure increase value f2, and f2=0.3f0 is set;

[0090] If P<P1, the drilling pressure increase value is determined to be the third drilling pressure increase value f3, and f3=0.2f0 is set;

[0091] Among them, f0 represents the initial drilling pressure, P1=1.2P0, P2=1.4P0.

[0092] Compare the correction parameter P with the first correction parameter P1 and the second correction parameter P2.

[0093] If P>P2, the drilling speed reduction amount is determined to be the first drilling speed reduction amount g1, and g1=0.25g0;

[0094] If P1≤P≤P2, the drilling speed reduction amount is determined to be the second drilling speed reduction amount g2, and g2=0.2g0 is set;

[0095] If P<P1, the drilling speed reduction amount is determined to be the third drilling speed reduction amount g3, and g3=0.15g0 is set;

[0096] Among them, g0 represents the initial drilling speed, 4m / h<g0<8m / h, P1=1.2P0, P2=1.4P0.

[0097] Specifically, in step S3, adjusting the mud injection rate during the drilling process includes:

[0098] The mud injection rate is reduced, and the reduction amount of the mud injection rate is positively correlated with the soil dislocation characterization parameter.

[0099] In this embodiment, optionally,

[0100] The soil displacement parameter H is compared with the first soil displacement parameter H1 and the second soil displacement parameter H2.

[0101] If H>H2, the reduction amount of the mud injection rate is determined to be the first reduction amount of the mud injection rate k1, and k1=0.4k0 is set;

[0102] If H1≤H≤H2, the reduction amount of the mud injection rate is determined to be the second reduction amount of the mud injection rate k2, and k2=0.3k0 is set;

[0103] If H

[0104] Wherein, k0 represents the initial mud injection rate, H1=1.1H0, H2=1.3H0.

[0105] By spraying mud, the soil debris generated during the drilling process is carried out of the hole to avoid accumulation at the bottom of the hole.

[0106] The present invention considers that when drilling in a drilling area under the weak offset category, the possibility of offset is smaller than that in a drilling area under the strong offset category. Therefore, the influence of the mud injection rate on drilling is reduced, and the mud injection rate is avoided to be too high, causing the pipe wall to shake and causing drilling offset, thereby improving the drilling quality and efficiency.

[0107] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.​

Claims

1. A method for correcting deviation in drilling construction, characterized in that: include: Step S1, determining a drilling area, and performing an experimental test operation on the soil in the drilling area, It includes drilling a predetermined testing depth with a drill rod, collecting a mean stress value of the drill rod, and collecting soil samples at the predetermined testing depth to determine the shear stress; Step S2, determining soil displacement characterization parameters according to the mean stress of the drill rod combined with the shear stress, and classifying the soil displacement displacement category of the drilling area according to the soil displacement characterization parameters; Step S3, performing drilling construction according to the soil displacement type of the drilling area, including: Real-time detection of the vibration amplitude of the sleeve set on the hole wall during the drilling process, construction of the vibration amplitude time domain curve, real-time analysis of the average slope of each time domain curve segment to determine whether the drilling is in an abnormal stage, and judging whether the drilling has a deviation tendency according to the discrete value of the time domain curve segment corresponding to the abnormal stage, and calculating the deviation correction parameter according to the soil dislocation characterization parameter combined with the discrete value of the corresponding time domain curve segment to adjust the drilling pressure and drilling speed; Or, adjusting the mud injection rate during the drilling process according to the soil dislocation characterization parameters; In step S2, the soil displacement characterization parameter is determined according to formula (1): （1） In formula (1), H represents the soil dislocation characterization parameter, F represents the mean stress of the drill pipe, F0 represents the preset mean stress threshold of the drill pipe, Fe represents the shear stress, Fe0 represents the preset standard threshold of the shear stress, α represents the stress weight coefficient of the drill pipe, and β represents the shear stress weight coefficient; In the step S2, the soil displacement categories in the drilling area are divided into: If the soil displacement characterization parameter is less than the preset soil displacement characterization parameter threshold, the soil displacement displacement category of the drilling area is a strong displacement category; If the soil displacement characterization parameter is greater than or equal to the preset soil displacement characterization parameter threshold, the soil displacement displacement category of the drilling area is a weak displacement category; In step S3, determining whether the borehole has a tendency to deviate includes: If the discrete value of the time domain curve segment corresponding to the abnormal stage is greater than the preset discrete value threshold, it is determined that the borehole has a tendency to deviate; In step S3, the correction characteristic parameter is calculated according to formula (2), including: （2） In formula (2), P represents the correction parameter, H represents the soil displacement parameter, H0 represents the preset soil displacement parameter threshold, L represents the discrete value of the time domain curve segment, and L0 represents the preset discrete value threshold of the time domain curve segment; In step S3, adjusting the drilling pressure and the drilling speed includes: Increasing the drilling pressure, the drilling pressure increase value is positively correlated with the deviation correction characteristic parameter; Reduce the drilling speed, and the reduction in drilling speed is positively correlated with the deviation correction characteristic parameter; In step S3, adjusting the mud injection rate during the drilling process includes: The mud injection rate is reduced, and the reduction amount of the mud injection rate is positively correlated with the soil dislocation characterization parameter.

2. The deviation correction method for drilling construction according to claim 1, characterized in that: In the step S3, according to the soil displacement category in the drilling area, the drilling construction includes: If the soil displacement category in the drilling area is a strong displacement category, the vibration amplitude of the sleeve set on the hole wall during the drilling process is detected in real time, and a vibration amplitude time domain curve is constructed. The average slope of each time domain curve segment is analyzed in real time to determine whether the drilling is in an abnormal stage. According to the discrete value of the time domain curve segment corresponding to the abnormal stage, it is determined whether there is a displacement tendency, so as to adjust the drilling pressure and drilling speed according to the soil displacement characterization parameter combined with the discrete value of the corresponding time domain curve; If the soil displacement category in the drilling area is a weak displacement category, the mud injection rate during the drilling process is adjusted according to the displacement tendency characterization parameters.

3. The deviation correction method for drilling construction according to claim 1, characterized in that: In step S3, the process of constructing the vibration amplitude time domain curve includes: A rectangular coordinate system is constructed with time as the horizontal axis and vibration amplitude as the vertical axis; Marking the coordinate points of the vibration amplitude at each moment in the rectangular coordinate system; The coordinate points are connected with a smooth curve to obtain the vibration amplitude time domain curve.

4. The method for correcting the deviation of drilling construction according to claim 1, characterized in that: In step S3, determining whether the drilling is in an abnormal stage includes: If there is a time domain curve segment whose average slope is greater than a preset average slope threshold, it is determined that the drilling is in an abnormal stage.

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