A loess region excited well depth design method and device
By setting up lithological survey points in the loess region, constructing a wet loess interface model, and revising the model, the problem of insufficient model accuracy in the design of well depth in the loess region was solved, ensuring that the well depth is below the top interface of the loess, thus improving data quality and work efficiency.
Patent Information
- Application Number
- CN202011223685.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-11-05
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2040-11-05
AI Technical Summary
In the design of seismic wave excitation well depth in the Loess Plateau, the existing methods for constructing moist loess thickness models are not accurate enough, and the excitation well depth determined by point experiments is not representative and regional enough, resulting in low signal-to-noise ratio of the data.
By setting up lithological survey points in the loess area, the depth of the moist loess interface was determined. A moist loess interface model was constructed using the weighted least squares kriging interpolation method. Excitation points were set up on the model, and the model was modified to ensure that the depth of the excitation wells was below the top interface of the moist loess.
It improved the accuracy of the wet loess thickness model, ensured that the excitation well depth was below the top interface of the loess, improved the quality of single-shot excitation data in the loess area, reduced costs and improved work efficiency.
Smart Images
Figure CN114444007B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of geophysical exploration, and in particular to a loess area excitation well depth design method and device. BACKGROUND
[0002] This section is intended to provide background or context to the embodiments of the application recited in the claims. The description herein does not constitute admission that the prior art is prior art nor does it constitute an admission of any description in this section as prior art to an application described herein and / or in this section.
[0003] The loess tableland area is covered by thick loess, and the thick dry and loose loess layer with a thickness of 100-200m causes serious absorption and attenuation of seismic waves, and the data signal-to-noise ratio is low in loess excitation.
[0004] In the past, the excitation well depth design of the loess area in such area is generally determined by a large number of excitation well depth point tests. However, due to the influence of the terrain undulation and the loess thickness in the area, the best excitation well depth is different in different places, so the determination of the excitation well depth by the point test is not suitable for the whole area.
[0005] Therefore, how to provide a new scheme which can solve the above technical problems is a technical problem to be solved in the field. SUMMARY
[0006] The loess area excitation well depth design method provided by the embodiments of the present application improves the accuracy of the moist loess thickness model, ensures that the excitation well depth of each excitation point is excited below the moist loess top interface, and improves the excitation single shot data quality in the loess area. The method comprises:
[0007] Laying out a lithology investigation point in a loess covered area;
[0008] Determining a moist loess interface depth of the lithology investigation point according to the lithology investigation point;
[0009] Determining a moist loess interface model according to the moist loess interface depth of the lithology investigation point;
[0010] Spreading a preset excitation point on the moist loess interface model to obtain a predicted excitation well depth of the preset excitation point;
[0011] Verifying the predicted excitation well depth according to a reference thickness, and correcting the moist loess interface model.
[0012] The embodiments of the present application also provide a loess area excitation well depth design device, which comprises:
[0013] A lithology investigation point laying out module is configured to lay out a lithology investigation point in a loess covered area;
[0014] A moist loess interface depth of the lithology investigation point determining module is configured to determine a moist loess interface depth of the lithology investigation point according to the lithology investigation point;
[0015] a wet loess interface model determination module configured to determine a wet loess interface model according to the wet loess interface depth of the lithology investigation points;
[0016] a predicted shooting depth determination module configured to distribute the preset shooting points on the wet loess interface model and obtain the predicted shooting depth of the preset shooting points;
[0017] a wet loess interface model correction module configured to verify the predicted shooting depth according to the reference thickness and correct the wet loess interface model.
[0018] The embodiment of the present application also provides a computer device, which comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, and the processor realizes the loess area shooting depth design method when executing the computer program.
[0019] The embodiment of the present application also provides a computer readable storage medium, which stores the computer program for executing the loess area shooting depth design method.
[0020] The loess area shooting depth design method and device provided by the embodiment of the present application first distribute lithology investigation points in a loess coverage area, then determine the wet loess interface depth of the lithology investigation points according to the lithology investigation points, then determine the wet loess interface model according to the wet loess interface depth of the lithology investigation points, continue to distribute the preset shooting points on the wet loess interface model and obtain the predicted shooting depth of the preset shooting points, and finally verify the predicted shooting depth according to the reference thickness and correct the wet loess interface model. The embodiment of the present application solves the problems of insufficient accuracy of the wet loess thickness model constructed by the conventional method and insufficient representativeness and regionality of the shooting depth determined by the point test. By distributing lithology investigation points with a certain density in the loess area, investigating the wet loess interface depth of each point, and then generating the wet loess interface model of the region, the model is used to guide the shooting depth design. The method and process designed by the embodiment of the present application improve the accuracy of the wet loess thickness model, ensure that the shooting depth of each shooting point is below the top interface of the wet loess, and improve the quality of the single shot data of the loess area. The design method described in the present application is simple to operate, the obtained wet loess model has high accuracy, changes the previous method of obtaining the shooting depth by a large amount of point test work, improves the work efficiency, and reduces the cost. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings. In the drawings:
[0022] Figure 1 A schematic diagram of a loess area excitation well depth design method according to an embodiment of the present application.
[0023] Figure 2 A flowchart of a loess area excitation well depth design method according to an embodiment of the present application.
[0024] Figure 3 A process diagram of determining the moist loess interface depth of the lithology investigation point of a loess area excitation well depth design method according to an embodiment of the present application.
[0025] Figure 4 A schematic diagram of a computer device running a loess area excitation well depth design method according to an embodiment of the present application.
[0026] Figure 5 A schematic diagram of a loess area excitation well depth design device according to an embodiment of the present application. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the following will further describe the embodiments of the present application in combination with the drawings. Herein, the schematic embodiments of the present application and the descriptions thereof are used to explain the present application, but not as a limitation of the present application.
[0028] Figure 1 A schematic diagram of a loess area excitation well depth design method according to an embodiment of the present application, as shown in Figure 1 The embodiment of the present application provides a loess area excitation well depth design method, which improves the accuracy of the moist loess thickness model, ensures that the excitation well depth of each excitation point is excited below the moist loess top interface, improves the excitation single shot data quality of the loess area, and the method comprises:
[0029] Step 101: arranging a lithology investigation point in a loess covered area;
[0030] Step 102: determining the moist loess interface depth of the lithology investigation point according to the lithology investigation point;
[0031] Step 103: determining the moist loess interface model according to the moist loess interface depth of the lithology investigation point;
[0032] Step 104: distributing the preset excitation point on the moist loess interface model to obtain the predicted excitation well depth of the preset excitation point.
[0033] Step 105: according to the reference thickness, verifying the predicted excitation well depth, correcting the moist loess interface model.
[0034] The loess area excitation well depth design method provided by the embodiment of the present application firstly arranges the lithology investigation points in the loess covered area; then determines the moist loess interface depth of the lithology investigation points according to the lithology investigation points; then determines the moist loess interface model according to the moist loess interface depth of the lithology investigation points; continues to distribute the preset excitation points on the moist loess interface model to obtain the predicted excitation well depth of the preset excitation points; and finally verifies the predicted excitation well depth according to the reference thickness, and corrects the moist loess interface model. The embodiment of the present application solves the problems of insufficient precision of the moist loess thickness model constructed by the conventional method and insufficient representativeness and regionality of the excitation well depth determined by the point test. By arranging the lithology investigation points with a certain density in the loess area, investigating the moist loess interface depth of each point, and then generating the moist loess interface model of the region, the model is used to guide the excitation well depth design. The method and process designed by the embodiment of the present application improve the precision of the moist loess thickness model, ensure that the excitation well depth of each excitation point is excited below the top interface of the moist loess, and improve the quality of the single shot data in the loess area. The design method described in the present application is simple to operate, and the obtained moist loess model has high precision. The method changes the previous practice of obtaining the excitation well depth through a large number of point test works, improves the work efficiency, and reduces the cost.
[0035] The present application can be applied to the excitation well depth design in the loess covered area, and specifically comprises a moist loess thickness model excitation well depth design method based on weighted least squares Kriging interpolation. Figure 2 The flowchart of the loess area excitation well depth design method of the embodiment of the present application is shown in Figure 2 When the loess area excitation well depth design method provided by the embodiment of the present application is implemented, the implementation can include: arranging the lithology investigation points in the loess covered area; determining the moist loess interface depth of the lithology investigation points according to the lithology investigation points; determining the moist loess interface model according to the moist loess interface depth of the lithology investigation points; distributing the preset excitation points on the moist loess interface model to obtain the predicted excitation well depth of the preset excitation points; and verifying the predicted excitation well depth according to the reference thickness, and correcting the moist loess interface model.
[0036] When the loess area excitation well depth design method provided by the embodiment of the present application is implemented, in one embodiment, the aforementioned arranging the lithology investigation points in the loess covered area includes:
[0037] Arranging the lithology investigation points in the loess covered area according to the first density value;
[0038] The ground elevation and the ground undulating area in the loess covered area are adjusted and encrypted according to the second density value, based on the first density value.
[0039] In the embodiment, the loess covered area is arranged with the lithology investigation points, and the specific process includes: arranging the loess covered area with the lithology investigation points according to the first density value; and adjusting and encrypting the first density value according to the second density value, based on the ground elevation and the ground undulating area in the loess covered area. In one example, the first density value is 500 m / point, and the second density value is 250 m / point; in the example, the loess covered area is arranged with the lithology investigation points according to the density of 500 m / point; and the first density value is adjusted and encrypted according to the density of 250 m / point, based on the ground elevation and the ground undulating area in the loess covered area.
[0040] Figure 3 For the process of determining the moist loess interface depth of the lithology investigation point in the loess area excitation well depth design method provided by the embodiment of the present application, as shown in Figure 3 When the loess area excitation well depth design method provided by the embodiment of the present application is implemented, in one embodiment, the process of determining the moist loess interface depth of the lithology investigation point based on the lithology investigation point includes:
[0041] Step 301: drilling and coring at the lithology investigation point to obtain the complete coring of the lithology investigation point;
[0042] Step 302: analyzing the complete coring of the lithology investigation point to obtain the moist loess interface depth of the lithology investigation point.
[0043] In the embodiment, the process of determining the moist loess interface depth of the lithology investigation point based on the lithology investigation point mainly includes: first, drilling and coring at the lithology investigation point to obtain the complete coring of the lithology investigation point, and then analyzing the complete coring of the lithology investigation point to obtain the moist loess interface depth of the lithology investigation point. Due to the influence of clayification and water content, the moist loess has good consolidation, and the complete coring can be obtained, so that the complete coring of the lithology investigation point can be obtained by drilling and coring in the field at the lithology investigation point arranged in the foregoing, and then the complete coring is measured and analyzed to obtain the moist loess interface depth of the lithology investigation point.
[0044] When the loess area excitation well depth design method provided by the embodiment of the present application is implemented, in one embodiment, the process of determining the moist loess interface model based on the moist loess interface depth of the lithology investigation point includes:
[0045] Based on the moist loess interface depth of the lithology investigation point, and in combination with the degree of change of the moist loess depth of the lithology investigation point, the weighted least squares Kriging interpolation method is used to determine the moist loess interface model.
[0046] In the embodiment, the weighted least square Kriging interpolation method is used to determine the wet loess interface model according to the wet loess interface depth of each lithology investigation point and the change degree of the wet loess depth of the lithology investigation point.
[0047] The method and process for designing the stimulating well depth based on the wet loess thickness model of the weighted least square Kriging interpolation can solve the problems of the low precision of the wet loess thickness model constructed by the conventional Kriging interpolation and the lack of representation and regionality of the stimulating well depth determined by the point test.
[0048] In the embodiment of the method for designing the stimulating well depth in the loess area, the wet loess interface model is determined in the following manner in one embodiment:
[0049]
[0050] In the embodiment of the method for designing the stimulating well depth in the loess area, the wet loess interface model is determined in the following manner in one embodiment: is the estimated value of the to-be-tested point; γ(h) is the characteristic value of the surrounding observation points; and n is the number of the lithology investigation points participating in the calculation.
[0051] The expression for determining the wet loess interface model is mentioned above, and it can be understood by those skilled in the art that the above formula can be deformed in a certain form and other parameters or data can be added or other specific formulas can be provided according to the needs in implementation, and these variations should fall within the protection scope of the present application.
[0052] In the embodiment of the method for designing the stimulating well depth in the loess area, the wet loess interface model is determined in the following manner in one embodiment:
[0053] The pre-designed stimulating point is arranged on the wet loess interface model, the wet loess thickness of the corresponding point is extracted from the wet loess interface model, and the depth of the top interface of the wet loess thickness of the point is set as the designed predicted stimulating well depth, so that the predicted stimulating well depth can be ensured to be set below the top interface of the wet loess by a certain depth. In one example, the top interface of the wet loess thickness of the stimulating point is set downward by 3m as the design basis of the preset stimulating well depth, so that the predicted stimulating well depth can be designed to be below the top interface of the wet loess by 3m.
[0054] By arranging a certain density of lithology investigation points in the loess area, the depth of the moist loess interface of each point is investigated, and a regional moist loess interface model is further generated by a weighted least squares Kriging interpolation method. The model is used to guide the excitation well depth design, and ensure that the excitation well depth is 3m below the top interface of the moist loess.
[0055] When the loess area excitation well depth design method provided by the embodiment of the present application is implemented, in one embodiment, the aforementioned verifying the predicted excitation well depth according to the reference thickness, and correcting the moist loess interface model, comprises:
[0056] The moist loess interface depth value obtained by actual drilling coring in the construction process is taken as the reference thickness;
[0057] The predicted excitation well depth is verified according to the reference thickness, and an error value of the reference thickness and the predicted excitation well depth is obtained;
[0058] The accuracy of the moist loess interface model is corrected to a preset accuracy threshold according to the error value of the reference thickness and the predicted excitation well depth.
[0059] In the embodiment, the correction of the moist loess interface model mainly comprises: in the excitation of the seismic source, the moist loess interface depth value obtained by actual drilling coring in the construction process is taken as the reference thickness; the predicted excitation well depth is verified according to the reference thickness, and an error value of the reference thickness and the predicted excitation well depth is obtained; and the accuracy of the moist loess interface model is corrected to a preset accuracy threshold according to the error value of the reference thickness and the predicted excitation well depth.
[0060] In the implementation process, the moist loess interface depth value is observed by other actual drilling coring, which is taken as the reference thickness to verify the accuracy of the moist loess thickness at the verification points in the model. The change of the excitation factor design is further investigated by the control points, and the accuracy change of no more than 1% can meet the preset accuracy threshold requirement.
[0061] The design method and the flow operation of the present application are simple, the obtained moist loess model has high accuracy, the previous method of obtaining the excitation well depth through a large number of point test work is changed, the work efficiency is improved, the cost is reduced, the excitation well depth of each excitation point is ensured to be excited below the top interface of the moist loess, and the quality of the single shot data is improved.
[0062] Figure 4 A schematic diagram of a computer device for running the loess area excitation well depth design method implemented by the present application is shown in Figure 4 The embodiment of the present application also provides a computer device, which comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, and the processor implements the above-mentioned loess area excitation well depth design method when executing the computer program.
[0063] The embodiment of the present application also provides a computer readable storage medium, which stores a computer program for implementing the loess area excited well depth design method.
[0064] The embodiment of the present application also provides a loess area excited well depth design device, as described in the following embodiment. Since the device solves the problem by the similar principle as the loess area excited well depth design method, the implementation of the device can refer to the implementation of the loess area excited well depth design method, and the repeated parts will not be described herein.
[0065] Figure 5 A loess area excited well depth design device is shown in the embodiment of the present application, and the embodiment of the present application also provides a loess area excited well depth design device, which can include the following in the specific implementation: Figure 5
[0066] The lithology investigation point arrangement module 501 is used for arranging the lithology investigation points in the loess coverage area.
[0067] The moist loess interface depth determination module 502 is used for determining the moist loess interface depth of the lithology investigation points according to the lithology investigation points.
[0068] The moist loess interface model determination module 503 is used for determining the moist loess interface model according to the moist loess interface depth of the lithology investigation points.
[0069] The predicted excited well depth determination module 504 is used for distributing the preset excited points on the moist loess interface model to obtain the predicted excited well depth of the preset excited points.
[0070] The moist loess interface model correction module 505 is used for verifying the predicted excited well depth according to the reference thickness and correcting the moist loess interface model.
[0071] In the implementation of the loess area excited well depth design device provided by the embodiment of the present application, in one embodiment, the aforementioned lithology investigation point arrangement module is specifically used for:
[0072] Arranging the lithology investigation points in the loess coverage area according to the first density value;
[0073] Adjusting and encrypting the first density value according to the second density value in the surface elevation and surface relief area in the loess coverage area.
[0074] In the implementation of the loess area excited well depth design device provided by the embodiment of the present application, in one embodiment, the aforementioned moist loess interface depth determination module of the lithology investigation points is specifically used for:
[0075] Drilling and coring at the lithology investigation points to obtain the complete coring of the lithology investigation points.
[0076] The complete coring of the lithology investigation point is analyzed to obtain the depth of the moist loess interface of the lithology investigation point.
[0077] When the loess area excited well depth design device provided by the embodiment of the present application is implemented, in one embodiment, the moist loess interface model determination module is specifically used for:
[0078] According to the depth of the moist loess interface of the lithology investigation point, in combination with the degree of change of the moist loess depth of the lithology investigation point, a weighted least square Kriging interpolation method is used to determine the moist loess interface model.
[0079] When the loess area excited well depth design device provided by the embodiment of the present application is implemented, in one embodiment, the moist loess interface model determination module is further used for determining the moist loess interface model in the following manner:
[0080]
[0081] wherein f is the objective function of the moist loess interface model; is the estimated value of the to-be-tested point; γ(h) is the characteristic value of the surrounding observation points; and n is the number of the lithology investigation points participating in the calculation.
[0082] When the loess area excited well depth design device provided by the embodiment of the present application is implemented, in one embodiment, the moist loess interface model correction module is specifically used for:
[0083] The moist loess interface depth value obtained by the actual drilling coring in the construction process is taken as the reference thickness;
[0084] According to the reference thickness, the predicted excited well depth is verified to obtain the error value of the reference thickness and the predicted excited well depth;
[0085] According to the error value of the reference thickness and the predicted excited well depth, the precision of the moist loess interface model is corrected to the preset precision threshold.
[0086] In summary, the loess region excitation well depth design method and device provided by the embodiment of the present application firstly arranges a lithology investigation point in the loess covered region; then determines the moist loess interface depth of the lithology investigation point according to the lithology investigation point; then determines the moist loess interface model according to the moist loess interface depth of the lithology investigation point; continues to distribute the preset excitation point on the moist loess interface model to obtain the predicted excitation well depth of the preset excitation point; and finally verifies the predicted excitation well depth according to the reference thickness and corrects the moist loess interface model. The embodiment of the present application solves the problems of insufficient precision of the moist loess thickness model constructed by the conventional method and insufficient representativeness and regionality of the excitation well depth determined by the point test. By arranging the lithology investigation points with a certain density in the loess region, the moist loess interface depth of each point is investigated, and then the moist loess interface model of the region is generated, and the model is used to guide the excitation well depth design. The method and process designed by the embodiment of the present application improve the precision of the moist loess thickness model, ensure that the excitation well depth of each excitation point is excited below the top interface of the moist loess, and improve the excitation single shot data quality in the loess region. The design method described in the present application is simple to operate, the obtained moist loess model has high precision, changes the previous method of obtaining the excitation well depth through a large amount of point test work, improves the work efficiency, and reduces the cost.
[0087] The excitation well depth design method and process of the moist loess thickness model based on the weighted least square Kriging interpolation provided by the present application solve the problems of insufficient precision of the moist loess thickness model constructed by the conventional Kriging interpolation and insufficient representativeness and regionality of the excitation well depth determined by the point test. The method and process designed by the present application improve the precision of the moist loess thickness model, ensure that the excitation well depth of each excitation point is below the top interface of the moist loess, and improve the data quality in the loess region.
[0088] By arranging the lithology investigation points with a certain density in the loess region, the moist loess interface depth of each point is investigated, and then the moist loess interface model of the region is generated by the weighted least square Kriging interpolation method. The model is used to guide the excitation well depth design, and ensures that the excitation well depth is excited below 3m of the top interface of the moist loess.
[0089] The design method and process described in the present application are simple to operate, the obtained moist loess model has high precision, changes the previous method of obtaining the excitation well depth through a large amount of point test work, improves the work efficiency, reduces the cost, ensures that the excitation well depth of each excitation point is excited below the top interface of the moist loess, and improves the excitation single shot data quality.
[0090] Those skilled in the art will appreciate that embodiments of the application can be devised for a method, a system, or a computer program product. Accordingly, the present application can be embodied in the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application can take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROMs, optical storage devices, etc.) embodying computer readable program code.
[0091] The present application is described in reference to the flowchart and / or block diagrams of the method, apparatus (system) and computer program product according to embodiments of the application. It will be understood that each block of the flowchart and / or block diagrams, and combinations of blocks in the flowchart and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processing device or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart and / or block diagram block or blocks. Figure 1 one or more functions specified in the flowchart and / or block diagram block or blocks. Figure 1 means for carrying out each of the one or more functions specified in the flowchart and / or block diagram block or blocks.
[0092] These computer program instructions can also be stored in a computer- readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the flowchart and / or block diagram block or blocks. Figure 1 one or more functions specified in the flowchart and / or block diagram block or blocks. Figure 1 means for carrying out each of the one or more functions specified in the flowchart and / or block diagram block or blocks.
[0093] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the flowchart and / or block diagram block or blocks. Figure 1 one or more functions specified in the flowchart and / or block diagram block or blocks. Figure 1 means for carrying out each of the one or more functions specified in the flowchart and / or block diagram block or blocks.
[0094] The specific embodiments described above have been disclosed by way of example and that, obviously, any modifications and / or equivalent arrangements and / or substitutions for a specific feature(s) there disclosed can be made without departing from the spirit and scope of the application.
Claims
1. A loess region excited well depth design method, characterized in that, The method comprises the following steps: Laying out lithology investigation points in the loess-covered area; Determining the moist loess interface depth of the lithology investigation points according to the lithology investigation points; Determining the moist loess interface model according to the moist loess interface depth of the lithology investigation points; Spreading the preset excitation point on the moist loess interface model to obtain the predicted excitation well depth of the preset excitation point; Verifying the predicted excitation well depth according to the reference thickness, and correcting the moist loess interface model; Laying out lithology investigation points in the loess-covered area, comprising: laying out lithology investigation points in the loess-covered area according to a first density value; adjusting and encrypting the first density value according to a second density value in the ground elevation and ground relief area in the loess-covered area; Determining the moist loess interface model according to the moist loess interface depth of the lithology investigation points, comprising: Determining the moist loess interface model according to the moist loess interface depth of the lithology investigation points and the change degree of the moist loess depth of the lithology investigation points by using the weighted least square Kriging interpolation method; Determining the moist loess interface model in the following manner: Where f is the objective function of the wet loess interface model; is the estimated value of the point to be measured; γ(h) is the characteristic value of the surrounding observation points; and n is the number of lithology survey points participating in the calculation.
2. The method of claim 1, wherein, Determining the moist loess interface depth of the lithology investigation points according to the lithology investigation points, comprising: Drilling and coring at the lithology investigation points to obtain the complete coring of the lithology investigation points; Analyzing the complete coring of the lithology investigation points to obtain the moist loess interface depth of the lithology investigation points.
3. The method of claim 1, wherein, Verifying the predicted excitation well depth according to the reference thickness, and correcting the moist loess interface model, comprising: Taking the moist loess interface depth value obtained by actually drilling and coring during construction as the reference thickness; Verifying the predicted excitation well depth according to the reference thickness to obtain the error value of the reference thickness and the predicted excitation well depth; According to the error value of the reference thickness and the predicted excitation well depth, the accuracy of the moist loess interface model is corrected to a preset accuracy threshold.
4. A loess region excited well depth design device, characterized in that, The method comprises the following steps: The lithology investigation point laying out module is used to lay out lithology investigation points in the loess-covered area; The moist loess interface depth of the lithology investigation point determining module is used to determine the moist loess interface depth of the lithology investigation points according to the lithology investigation points; The moist loess interface model determining module is used to determine the moist loess interface model according to the moist loess interface depth of the lithology investigation points; The predicted excitation well depth determining module is used to spread the preset excitation point on the moist loess interface model to obtain the predicted excitation well depth of the preset excitation point; The moist loess interface model correcting module is used to verify the predicted excitation well depth according to the reference thickness, and correct the moist loess interface model; The lithology investigation point laying out module is specifically used to lay out lithology investigation points in the loess-covered area according to a first density value, and adjust and encrypt the first density value according to a second density value in the ground elevation and ground relief area in the loess-covered area; The moist loess interface model determining module is specifically used to determine the moist loess interface model according to the moist loess interface depth of the lithology investigation points and the change degree of the moist loess depth of the lithology investigation points by using the weighted least square Kriging interpolation method; The moist loess interface model determining module is also used to determine the moist loess interface model in the following manner: Wherein, f is the objective function of the wet loess interface model; is the estimated value of the point to be measured; γ(h) is the characteristic value of the surrounding observation points; n is the number of lithology survey points participating in the calculation.
5. The apparatus of claim 4, wherein, The moist loess interface depth of the lithology investigation point determining module is specifically used to: Drill and core at the lithology investigation points to obtain the complete coring of the lithology investigation points; The complete coring of the lithology investigation point is analyzed to obtain the moist loess interface depth of the lithology investigation point.
6. The apparatus of claim 4, wherein, The moist loess interface model correction module is specifically used for: Taking the moist loess interface depth value obtained through actual coring of a drilling in a construction process as a reference thickness; According to the reference thickness, verifying the predicted shooting depth to obtain an error value of the reference thickness and the predicted shooting depth; According to the error value of the reference thickness and the predicted shooting depth, correcting the accuracy of the moist loess interface model to a preset accuracy threshold.
7. A computer device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor executes the computer program to implement the method in any one of claims 1 to 3.
8. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and the computer program is executed by the processor to implement the method in any one of claims 1 to 3.