A rapid quality control method for multi-factor construction of controllable seismic source

Abstract

The present invention proposes a rapid quality control method for controllable seismic source multi-factor construction, which automatically determines the type of shot point code by comparing preset files and supporting data returned by field instruments, realizes automatic comparison with preset shot point codes, and outputs a list of unmatched shot points; thereby, rapid quality control of multi-factor construction is realized. The present invention is simple to operate and is suitable for any quality control work on-site of controllable seismic source multi-factor construction.

Description

Technical Field

[0001] The invention relates to the technical field of field quality control of controllable seismic source geophysical exploration data, and in particular to a method for rapid quality control of controllable seismic source multi-factor construction. Background Art

[0002] In seismic exploration projects that use vibrators as excitation sources, one excitation parameter is generally fixed in a project, that is, the number of simultaneous excitation source combinations, scanning length, output drive amplitude, signal scanning mode, etc. in the same project are all fixed. With the advancement of seismic exploration to dense obstacle areas such as urban areas and oil fields, more and more projects use multiple excitation factors at the same time in the same seismic exploration project. For example, in the same project, there are 4 combined excitation shot points and single excitation shot points; there are 20s scanning length shot points and 24s scanning length (excitation source duration) shot points; there are 70% output shot points and 40% output shot points. In the same project, because of the obstacle safety distance requirement, the vibrator multi-factor excitation shot points are set, which puts higher requirements on on-site quality control, and traditional quality control methods cannot meet construction requirements.

[0003] In order to meet the requirements of multi-factor construction of controllable seismic sources, the present invention proposes a rapid quality control method for multi-factor construction of controllable seismic sources; the type of shot point code is automatically determined by comparing the preset file and the supporting data returned by the field instrument, and automatic comparison with the preset shot point code is realized, and a list of unmatched shot points is output; thereby, rapid quality control of multi-factor construction is achieved. The present invention is simple to operate and is suitable for any quality control work on-site of multi-factor construction of controllable seismic sources. Summary of the invention

[0004] In order to address the deficiencies in the prior art, the present invention proposes a rapid quality control method for controllable seismic source multi-factor construction; the type of shot point code is automatically determined by comparing preset files and supporting data returned by field instruments, automatic comparison with preset shot point codes is achieved, and a list of unmatched shot points is output; thereby rapid quality control of multi-factor construction is achieved. The present invention is simple to operate and is suitable for any quality control work on-site of controllable seismic source multi-factor construction.

[0005] To achieve the above object, the present invention adopts the following technical solution.

[0006] In an embodiment of the present invention, a rapid quality control method for multi-factor construction of controllable vibrator is proposed, and the method comprises the following steps:

[0007] The S1 field instrument performs outdoor implementation according to the preset SPS file containing the shot point code, and returns the result SPS file and the attached support files;

[0008] S2 automatically determines the shot point code type through built-in algorithms and the SPS files and attached support files returned by field instruments, and outputs them to the sorted SPS files;

[0009] S3 automatically compares the shot point code corresponding to each shot in the preset SPS and the sorted SPS file to quality control whether all shot points are constructed according to the excitation factors set in the preset SPS.

[0010] Furthermore, the shot point code includes but is not limited to parameters such as source type, output amplitude, and source scanning length.

[0011] Furthermore, SPS contains three files: SPS contains the pile number and coordinate elevation information of the shot point to be constructed; RPS contains the pile number and coordinate elevation information of the detection point; XPS describes the detection point that needs to be received when constructing each shot.

[0012] Furthermore, the rapid quality control method for multi-factor construction of controllable seismic sources is composed of a preset module, a calculation module, a comparison module and an output module; specifically including: 1) Preset module: preset shot point codes; 2) Calculation module: use the SPS file and the attached support file returned by the field instrument as program input data, and calculate a new set of shot point codes according to the built-in algorithm; 3) Comparison module: compare whether the preset shot point code is consistent with the actual shot point code; 4) Output module: when the preset shot point code and the actual shot point code do not match, the supplementary shot file is output, requiring re-construction in the field.

[0013] Furthermore, the calculation module determines the number of combined units, source type, source scanning length, and output amplitude according to the SPS file returned by the field instrument and the attached support files, thereby determining a new shot point code for each shot and writing it into the sorted SPS file.

[0014] The beneficial effect of the present invention is that, in view of the problems existing in the existing controllable source multi-factor construction, a method for rapid quality control of controllable source multi-factor construction is proposed; by comparing the preset file and the supporting data returned by the field instrument, the type of shot point code is automatically determined, automatic comparison with the preset shot point code is achieved, and a list of unmatched shot points is output; thereby, rapid quality control of multi-factor construction is achieved. The present invention is simple to operate and is suitable for any quality control work on site of controllable source multi-factor construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0016] Figure 1 It is a schematic diagram of the process flow of the present invention;

[0017] Figure 2 It is 4*70% output single guns of the first embodiment of the present invention;

[0018] Figure 3 It is 4*50% output single guns of the first embodiment of the present invention;

[0019] Figure 4 It is a single gun with 1*50% output according to the first embodiment of the present invention;

[0020] Figure 5 The format of each column of data information in the vaps file of the first embodiment of the present invention;

[0021] Figure 6 The key information in the obs file of the first embodiment of the present invention;

[0022] Figure 7 A comparison table of shot point codes and source construction parameters of the first embodiment of the present invention;

[0023] Figure 8 This is the operation interface of the first embodiment of the present invention. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the present invention more clear, the embodiment of the present invention is further described in detail below with reference to the accompanying drawings. The following implementation examples are only used to more clearly illustrate the system method and technical solution of the present invention, and cannot be used to limit the scope of protection of this application.

[0025] According to the implementation mode of the present invention, the present invention proposes a rapid quality control method for multi-factor construction of controllable seismic sources; the type of shot point code is automatically determined by comparing the preset file and the supporting data returned by the field instrument, and automatic comparison with the preset shot point code is realized, and a list of unmatched shot points is output; thereby, rapid quality control of multi-factor construction is realized. The present invention is simple to operate and is suitable for any quality control work on site of multi-factor construction of controllable seismic sources.

[0026] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0027] Figure 1 This is a schematic diagram of the processing flow of a rapid quality control method for vibrator-controlled multi-factor construction. Figure 1 As shown, the method comprises the following steps:

[0028] The S1 field instrument performs outdoor implementation according to the preset SPS file containing the shot point code, and returns the result SPS file and the attached support files;

[0029] In specific implementation, the shot point code includes but is not limited to parameters such as source type, output amplitude, source scanning length, etc.

[0030] In specific implementation, SPS contains three files: SPS contains the pile number and coordinate elevation information of the shot point to be constructed; RPS (detection point information file) contains the pile number and coordinate elevation information of the detection point (receiving point); XPS (source shot point file) describes the detection point that needs to be received when constructing each shot, also called a relationship file.

[0031] S2 automatically determines the shot point code type through built-in algorithms and the SPS files and attached support files returned by field instruments, and outputs them to the sorted SPS files;

[0032] S3 automatically compares the shot point code corresponding to each shot in the preset SPS and the sorted SPS file to quality control whether all shot points are constructed according to the excitation factors set in the preset SPS.

[0033] In specific implementation, the rapid quality control method for multi-factor construction of controllable seismic sources consists of a preset module, a calculation module, a comparison module, and an output module; specifically including: 1) Preset module: preset shot point codes; 2) Calculation module: using the field instrument return data (SPS file and attached support files) as program input data, and calculating a new set of shot point codes based on the built-in algorithm; 3) Comparison module: comparing whether the preset shot point codes are consistent with the actual shot point codes; 4) Output module, when the preset shot point codes and the actual shot point codes do not match, the supplementary shot file is output, requiring re-construction in the field.

[0034] In the specific implementation, the calculation module determines the source type, number of combined units, source scanning length, and output amplitude according to the input field instrument return data (SPS file and attached support files), assigns a new shot point code to each shot, and writes it into the sorted SPS file.

[0035] It should be noted that, although the operations of the method of the present invention are described in a specific order in the above embodiments and the accompanying drawings, this does not require or imply that the operations must be performed in the specific order, or that all the operations shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps.

[0036] In order to explain the above-mentioned rapid quality control method for controllable seismic source multi-factor construction more clearly, it is described below in conjunction with a specific embodiment. However, it is worth noting that this embodiment is only for better illustrating the present invention and does not constitute an improper limitation to the present invention.

[0037] Embodiment 1:

[0038] A certain overseas super-large urban area 3D project covers several large cities including the country's capital. The normal design of the project uses 4 large-tonnage INOVA AHV-IV 380 controllable seismic sources for combined construction, 70% output, and a scanning length of 12s. According to the PPV test results, the normal construction parameter safety distance is more than 50m. Due to the dense buildings in the urban area, the gun points are mainly arranged on asphalt roads, and the 50m safety distance is basically impossible to arrange the gun points. In order to reduce the damage to urban buildings, it is proposed to reduce the number of source combinations (some gun points are reduced from 4 to 2 or 1), reduce the output amplitude (70% output to 50%, 40%, 35%), and use smaller tonnage UniVib PLS326 seismic sources (small seismic sources can also reduce the output to further reduce the distance from the building) to reduce the safety distance and improve the uniformity of the gun point layout.

[0039] like Figure 2 As shown, it is a single shot collected by a combination of 4 380 sources with 70% output; Figure 3 It is a combination of 4 380 source units with 50% output single gun; Figure 4 It is a single shot with 50% output of a 380 source. As the number of combined units decreases and the output amplitude becomes smaller, the energy of the single shot tends to weaken. However, the effective reflection of the target layer is clear and has a high signal-to-noise ratio, which will make a great contribution to the data stacking imaging effect.

[0040] Figure 5 It is the header block description of the column format of the vaps file. Columns 2-17 are the shot line numbers, columns 18-25 are the shot point numbers, columns 28-29 are the source numbers, columns 30-32 are the source drive amplitudes, columns 56-64 are the east coordinates of the excitation points, columns 65-74 are the north coordinates of the excitation points, columns 75-80 are the elevations of the source excitation points, and columns 131-150 are the GPS TB time. Figure 6 It is a screenshot (part) of a vaps file. The quality control device of the present invention mainly calls columns 30-32 for force amplitude (red frame), columns 56-74 for source excitation coordinates (yellow frame) and columns 131-150 for excitation TB time. Figure 7There are 20 optional vibrator excitation factors in total. Four 380 seismic sources are represented by V, V1 represents an output of 70%, V2 represents an output of 50%, V3 represents an output of 40%, and V4 represents an output of 35%; W represents the combined excitation of two 380 seismic sources, W1 represents an output of 50%, W2 represents an output of 40%, and W3 represents an output of 35%; X represents the excitation of one seismic source, X3 represents an output of 50%, X4 represents an output of 40%, and X5 represents an output of 35%; S represents the combined excitation of two 326 seismic sources, S1 represents an output of 70%, S2 represents an output of 60%, S3 represents an output of 50%, S4 represents an output of 40%, and S5 represents an output of 35%; U represents the excitation of one 326 seismic source, U1 represents an output of 70%, U2 represents an output of 60%, U3 represents an output of 50%, U4 represents an output of 40%, and U5 represents an output of 35%.

[0041] Step 1: The field instrument performs outdoor implementation according to the preset SPS file containing the shot point code, and returns the result SPS file and the attached support files;

[0042] SPS (Shell Processing Support Format) file is a commonly used data format in the geophysical prospecting industry, which mainly includes three files: SPS mainly contains the pile number and coordinate elevation information of the shot point to be constructed; RPS (detection point information file) mainly contains the pile number and coordinate elevation information of the detection point (receiving point); XPS (source shot point file) mainly describes the detection points that need to be received when constructing each shot, also called relationship file.

[0043] The specific operation process is as follows:

[0044] 1.1 When designing indoor blast points, select the above-mentioned vibroseis excitation method based on the safe distance between the blast point area and the nearest building, and pre-prepare the corresponding blast point code in the SPS for field instrument blasting;

[0045] The SPS file preset for the field instrument contains the produced shot point codes; the shot point codes are described below. Figure 7 The content shown is used to describe parameters such as source type, output amplitude, source scanning length, etc. After agreeing with the instrument, the corresponding excitation factors can be known according to the shot point code.

[0046] The result SPS file is the SPS (RPS, SPS, XPS) file exported after the instrument completes the field vibroseis production acquisition;

[0047] The attached supporting files (at least containing data with suffixes of vaps, obs, and cog) are special data formats for recording construction information after field construction is completed. vaps mainly records the construction status of each shot of the source. obs is an electronic class report (an electronic data format for recording operation information in the industry), which will record some information during instrument construction; cog (Center of Gravity) records the difference between the combined center of the designed shot point and the actual excitation position of each shot.

[0048] 1.2 When the operator implements in the field Figure 7 The representative is compared with the source excitation factors, and the radio station notifies or automatically performs construction according to the type of shot point code;

[0049] 1.3 After the construction is completed on the same day, the operator exports SPS and other supporting files (mainly including obsv, vaps, cog, sps, xps, rps, aps, etc.) from the instrument operating system and submits them to the QC (Quality Control, a team specifically responsible for construction quality control, generally called the interpretation team in China) team for indoor quality control of the day's construction.

[0050] Step 2: Automatically determine the shot point code type through the built-in algorithm and the SPS file and attached support files returned by the field instrument; and output to the sorted SPS file;

[0051] The built-in algorithm refers to the process of calculating the shot point code based on the data returned by the field instrument, that is, judging the type of source, combination of units, and output amplitude used by the shot point according to the returned information to match the corresponding shot point code; for example, by analyzing the returned data, it is known that a 380 source, 4 units, and 70% output excitation are used. Figure 7 , you can know that the corresponding gun point code is V1.

[0052] The present invention is composed of a preset module, a calculation module, a comparison module, and an output module; specifically includes:

[0053] 1) Preset module: preset the shot point code according to the agreement; 2) Calculation module: after the field instrument construction is completed, copy the data back and use it together with the preset file as the program input data. The program calculates a set of shot point codes according to the actual returned data; 3) Comparison module: compares whether the preset shot point code and the actual shot point code are consistent; 4) Output module: when the preset shot point code and the actual shot point code do not match, it means that the field construction has not been carried out as required, and the supplementary shot file is output to require the field to re-construct.

[0054] The specific calculation process is as follows:

[0055] 1. The calculation module selects the earthquakes with the same TB (Time break, the GPS time when the seismic source starts scanning) according to the input field instrument return data, and further determines the distance between the simultaneous excitation sources. When the distance is less than a certain fixed value (generally the shot point distance), it can be determined that the two or more seismic sources are simultaneously combined and the number of combined sources is determined;

[0056] 2. The calculation module automatically reads the output amplitude from the fixed column in the vaps file and reads the source scanning length from the obs file;

[0057] 3. After the calculation module determines the number of combined units, scanning length, and output amplitude, it assigns a new shot point code to each shot according to the previous agreement with the operator and writes it into the sorted SPS file.

[0058] Step 3: Automatically compare the shot point code corresponding to each shot in the preset SPS and the sorted SPS file to quality control whether all shot points are constructed according to the pre-set excitation factors.

[0059] Automatically compare the preset SPS and the shot point code corresponding to each shot in the sorted SPS file to quality control whether all shot points are constructed according to the preset excitation factors (the shot point code expresses the content of the excitation factors). When the two are inconsistent, it means that the field construction is not carried out according to the task book, the output point code does not match the shot point list, and the field is supplemented with shot construction.

[0060] In specific implementation, the QC personnel use the implementation method of the present invention to input the preset task book SPS and the field return support file to quality control whether all the blast points on the day are constructed according to the excitation factors set in the task book. Figure 8 It is the operation interface. The point code column is the preset shot point code of SPS. The last "P" (abbreviation of Production) is the actual excitation point code obtained from the support file by the built-in algorithm of the program. Then the two are compared. When there is inconsistency, it means that the field construction is not in accordance with the design factors of the task book. The program will fill the corresponding shot row with other colors to facilitate the identification of operators. For example, the 5th row S7025-11855 shot, the code V1 design excitation factor is 4 units with an output of 70%, and the actual field construction is in accordance with V3, 4 units 380 source output 40%; the 12th row S7105-11991 shot, the code X5 design excitation factor is 1 unit 380 source output 35%, and the actual field construction is in accordance with X4, 1 unit output 40%.

[0061] In specific implementation, in order to facilitate field supplementary blasting construction, this system can also export all unmatched blasting points in SPS format for field supplementary blasting construction. When the actual construction is greater than the designed excitation intensity, it is easy to cause damage to the building. When the construction factor is smaller than the designed excitation intensity, it is impossible to obtain a high energy single blast to the maximum extent.

[0062] The beneficial effect of the present invention is that, in view of the problems existing in the technical field of on-site quality control of geophysical exploration data of controllable seismic sources, a rapid quality control method for multi-factor construction of controllable seismic sources is proposed; the type of shot point code is automatically determined by comparing the preset file and the supporting data returned by the field instrument, and automatic comparison with the preset shot point code is realized, and a list of unmatched shot points is output; thereby, rapid quality control of multi-factor construction is realized. The present invention is simple to operate and is suitable for any on-site quality control work of multi-factor construction of controllable seismic sources.

[0063] The applicant of the present invention has made a detailed explanation and description of the implementation examples of the present invention in conjunction with the drawings in the specification. The above implementation examples are only preferred implementation schemes of the present invention. The detailed description is only to help readers better understand the spirit of the present invention, and it is not a limitation on the protection scope of the present invention. On the contrary, any improvements or modifications based on the inventive spirit of the present invention should fall within the protection scope of the present invention.

Claims

1. A rapid quality control method for multi-factor construction of controllable vibrator, characterized in that: The method comprises the following steps: The S1 field instrument performs outdoor implementation according to the preset SPS file containing the shot point code, and returns the result SPS file and the attached support files; S2 automatically determines the shot point code type through built-in algorithms and the SPS files and attached support files returned by field instruments, and outputs them to the sorted SPS files; S3 automatically compares the shot point code corresponding to each shot in the preset SPS and the sorted SPS file to quality control whether all shot points are constructed according to the excitation factors set by the preset SPS; The shot point code includes but is not limited to source type, output amplitude, and source scanning length; The rapid quality control method for multi-factor construction of controllable vibroseis consists of a preset module, a calculation module, a comparison module and an output module; specifically, it includes: 1) Preset module: preset shot point code; 2) Calculation module: use the SPS file and the attached support file returned by the field instrument as program input data, and calculate a new set of shot point codes according to the built-in algorithm; 3) Comparison module: compare whether the preset shot point code is consistent with the actual shot point code; 4) Output module: when the preset shot point code and the actual shot point code do not match, the supplementary shot file is output, requiring field re-construction; The calculation module determines the source type, number of combined units, source scanning length, and output amplitude according to the SPS file returned by the field instrument and the attached supporting files, assigns a new shot point code to each shot, and writes it into the sorted SPS file.

2. A rapid quality control method for vibroseis multi-factor construction according to claim 1, characterized in that: SPS contains three files: 1) SPS contains the pile number and coordinate elevation information of the shot point to be constructed; 2) RPS contains the pile number and coordinate elevation information of the detection point; 3) XPS refers to the detection point that needs to be received when constructing each shot.

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