Experimental method and device for simulating seabed node acquisition, electronic equipment and medium

Abstract

The invention discloses an experimental method and device for simulating seabed node acquisition, electronic equipment and a medium. The method comprises the following steps: determining a simulated seabed burial depth of each seabed node according to a model top surface form and a plane distribution position; determining a receiving probe extension bar; determining a simulated seabed receiving probe according to a predetermined ultrasonic receiving probe and a receiving probe extension bar; according to the simulated seabed burial depth, a simulated seabed receiving probe is controlled to make hard contact with the top face of the model, an excitation probe is controlled to continuously excite ultrasonic simulation signals, the simulated seabed receiving probe is controlled to continuously receive the ultrasonic simulation signals, and physical simulation data collection of a common detection point gather of a seabed node is achieved; and carrying out longitudinal and transverse rolling simulation acquisition on the three-dimensional work area until the three-dimensional work area simulation acquisition of the model is completed. According to the technical scheme, the technical defect that seismic physical simulation can only simulate marine surface towrope collection is overcome, and the technical blank of seismic physical simulation experiments in the field of seabed node simulation collection is filled.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of artificial earthquake exploration, in particular to an experimental method and device for simulating seabed node acquisition, electronic equipment and a medium. BACKGROUND

[0002] Seismic physical simulation experiment technology is a kind of seismic exploration forward simulation technology, which establishes a known physical model according to the geological characteristics in the field, and simulates the field seismic exploration process by using real physical wave field. The experimental results simulated in this way are closest to the actual exploration, which can effectively guide the various problems existing in the acquisition, processing and interpretation of the actual seismic exploration, and provide a good experimental basis for people to improve the understanding of the propagation law of seismic wave field, reduce the multi-solution of seismic exploration, improve the imaging accuracy of seismic exploration and ultimately improve the success rate of oil and gas exploration.

[0003] Marine seismic exploration is an important field of oil and gas seismic exploration at home and abroad, which has the characteristics of high exploration difficulty and high exploitation cost. The seismic physical simulation method can greatly improve people's understanding of marine geological conditions, and provide strong help for improving the accuracy of seismic exploration and reducing the cost of oil and gas exploration. The previous marine seismic exploration is mainly based on the construction method of sea surface excitation / sea surface receiving. For this kind of acquisition method, the current seismic physical simulation experiment technology has very mature simulation technology means. With the continuous improvement of marine exploration level, a new type of seabed wireless acquisition node is proposed by arranging different positions on the seabed, and the exploration construction method of seabed node receiving by sea surface excitation is proposed.

[0004] However, the existing seismic physical simulation technology still stays at the technical level of traditional sea surface excitation / sea surface receiving, and there is no targeted simulation experiment means for the new type of seabed node acquisition method. SUMMARY

[0005] The present application provides an experimental method and device for simulating seabed node acquisition, electronic equipment and a medium, which solves the technical defect that the existing seismic physical simulation technology can only simulate marine sea surface streamer acquisition, and fills the technical gap of seismic physical simulation experiment in the field of seabed node simulation acquisition.

[0006] According to an aspect of the present application, an experimental method for simulating seabed node acquisition is provided, which comprises:

[0007] obtaining the planar distribution position of the seabed node in the model acquisition coordinate system;

[0008] determining the simulated seabed burial depth of each seabed node according to the model top surface morphology and the planar distribution position;

[0009] determining a receiving probe extension rod; wherein the length of the receiving probe extension rod is greater than the maximum water depth of the model.

[0010] determine a simulation seabed receiving probe according to the predetermined ultrasonic receiving probe and the receiving probe extension rod; wherein the receiving probe extension rod and the ultrasonic receiving probe are waterproofed by sealant;

[0011] According to the simulation seabed burial depth, control the hard contact model top surface of the simulation seabed receiving probe, and control the continuous excitation of the excitation probe to excite ultrasonic simulation signals, control the continuous reception of the simulation seabed receiving probe to receive ultrasonic simulation signals, and realize the physical simulation data acquisition of the common receiver point gather of one seabed node.

[0012] The simulation seabed receiving probe is moved to the next seabed node position to realize the physical simulation data acquisition of the common receiver point gather of the next seabed node.

[0013] The three-dimensional work area is longitudinally and transversely rolled to simulate and collect until the three-dimensional work area simulation collection of the model is completed.

[0014] According to another aspect of the present application, an experimental device for simulating seabed node collection is provided, which comprises:

[0015] A plane distribution position acquisition module is configured to acquire the plane distribution position of the seabed node in the model collection coordinate system.

[0016] A seabed burial depth determination module is configured to determine the simulation seabed burial depth of each seabed node according to the model top surface shape and the plane distribution position.

[0017] A receiving probe extension rod determination module is configured to determine the receiving probe extension rod; wherein the length of the receiving probe extension rod is greater than the maximum water depth of the model.

[0018] A receiving probe determination module is configured to determine a simulation seabed receiving probe according to the predetermined ultrasonic receiving probe and the receiving probe extension rod; wherein the receiving probe extension rod and the ultrasonic receiving probe are waterproofed by sealant.

[0019] A data collection module is configured to control the hard contact model top surface of the simulation seabed receiving probe according to the simulation seabed burial depth, and control the continuous excitation of the excitation probe to excite ultrasonic simulation signals, control the continuous reception of the simulation seabed receiving probe to receive ultrasonic simulation signals, and realize the physical simulation data acquisition of the common receiver point gather of one seabed node.

[0020] A probe moving module is configured to move the simulation seabed receiving probe to the next seabed node position to realize the physical simulation data acquisition of the common receiver point gather of the next seabed node.

[0021] The simulation acquisition module is configured to perform longitudinal and transverse rolling simulation acquisition on the three-dimensional work area until the simulation acquisition of the three-dimensional work area of the model is completed.

[0022] According to another aspect of the present application, there is provided an electronic device comprising:

[0023] at least one processor; and

[0024] a memory in communication with the at least one processor; wherein

[0025] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to perform the experimental method for simulating seabed node acquisition according to any one of the embodiments of the present application.

[0026] According to another aspect of the present application, there is provided a computer readable storage medium storing computer instructions for enabling a processor to implement the experimental method for simulating seabed node acquisition according to any one of the embodiments of the present application when executed by the processor.

[0027] The technical solution of the embodiments of the present application comprises the following steps: obtaining the planar distribution position of the seabed node in the model acquisition coordinate system; determining the simulated seabed burial depth of each seabed node according to the model top surface morphology and the planar distribution position; determining the receiving probe extension rod; determining the simulated seabed receiving probe according to the pre-determined ultrasonic receiving probe and the receiving probe extension rod; controlling the simulated seabed receiving probe to hard contact the model top surface according to the simulated seabed burial depth, and controlling the excitation probe to continuously excite ultrasonic simulation signals and control the simulated seabed receiving probe to continuously receive ultrasonic simulation signals, thereby realizing the physical simulation data acquisition of the common receiver point gather of one seabed node; moving the receiving probe to the position of the next seabed node to realize the physical simulation data acquisition of the common receiver point gather of the next seabed node; performing longitudinal and transverse rolling simulation acquisition on the three-dimensional work area until the simulation acquisition of the three-dimensional work area of the model is completed. The technical solution solves the technical defect that the existing seismic physical simulation technology can only simulate marine sea surface streamer acquisition, and fills the technical gap of seabed node simulation acquisition in the field of seismic physical simulation experiments.

[0028] It should be understood that the content described in this part is not intended to identify key or important features of the embodiments of the present application, nor is it intended to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to make the technical solutions in the embodiments of the present application clearer, the accompanying drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the accompanying drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without any creative effort based on these drawings.

[0030] Figure 1 is a flow chart of an experimental method for simulating the collection of seabed nodes according to Embodiment One of the present application;

[0031] Figure 2 is a schematic diagram of an experimental device for simulating the collection of seabed nodes according to Embodiment One of the present application;

[0032] Figure 3 is a schematic diagram of the design form of a receiving probe extension rod and its loading relationship with a receiving probe according to Embodiment One of the present application;

[0033] Figure 4(a) is a schematic diagram of the placement position of a receiving node on a plane according to Embodiment One of the present application;

[0034] Figure 4(b) is a schematic diagram of the three-dimensional structure form of the top surface of a physical model according to Embodiment One of the present application;

[0035] Figure 4(c) is a schematic diagram of the three-dimensional coordinate information of a node on the top surface of a model according to Embodiment One of the present application;

[0036] Figure 5 is a schematic diagram of a specific collection according to Embodiment One of the present application;

[0037] Figure 6 is a schematic diagram of three-dimensional rolling collection according to Embodiment One of the present application;

[0038] Figure 7 is a schematic diagram of the structure of an experimental device for simulating the collection of seabed nodes according to Embodiment Two of the present application;

[0039] Figure 8 is a schematic diagram of the structure of an electronic device for implementing an experimental method for simulating the collection of seabed nodes according to the present application. DETAILED DESCRIPTION

[0040] In order to make the technical solutions in the embodiments of the present application clearer, the accompanying drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the accompanying drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without any creative effort based on these drawings.

[0041] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting, unless the context otherwise requires. The use of the terms "a" and "an" and "the" includes both singular and plural referents unless the context clearly dictates otherwise. The terms "comprises" and / or "comprising," or "includes" and / or "including" when used in this specification, specify the presence of stated features, regions, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components, and / or groups thereof. The term "about" when used before a numerical designation, has its usual meaning in the field of numerical specification, namely a value that is reasonably close to the value being modified but within a range that does not have a significant effect on the end result.

[0042] Embodiment one

[0043] Figure 1 is a flow chart of an experimental method for simulating seabed node acquisition according to the embodiment one of the present application. The embodiment one can be applied to the case of simulating seabed node acquisition signal. The method can be executed by an experimental device for simulating seabed node acquisition. The experimental device for simulating seabed node acquisition can be realized in the form of hardware and / or software. The experimental device for simulating seabed node acquisition can be configured in an electronic device. As shown in the figure, the method comprises: Figure 1

[0044] S110, obtaining the planar distribution position of the seabed node in a model acquisition coordinate system.

[0045] In the present scheme, the marine seismic exploration is performed by a surveying construction mode of exciting seabed nodes to receive.

[0046] In the present embodiment, a three-dimensional observation system of marine node acquisition matching the actual exploration can be designed according to the experimental requirements of the seismic physical simulation experiment of marine node acquisition and in combination with the characteristics of the experimental device, so as to obtain the planar distribution position of the seabed node in the model acquisition coordinate system.

[0047] Optionally, the planar distribution position of the seabed node in the model acquisition coordinate system comprises steps A1-A3.

[0048] Step A1, obtaining the longitudinal and transverse distribution interval of the seabed node.

[0049] Step A2, calculating the planar distribution position of all seabed nodes in the acquisition work area according to the longitudinal and transverse distribution interval.

[0050] Step A3, changing the planar distribution position coordinate to the model acquisition coordinate system to calculate the planar distribution position of the seabed node in the model acquisition coordinate system.

[0051] ​Specifically, according to the seismic physical simulation experiment requirements collected by the ocean node, combined with the characteristics of the experimental device, a three-dimensional observation system of the ocean node collection matching the actual exploration is designed. According to the design scheme of the simulation collection observation system, the longitudinal and transverse distribution intervals of the ocean bottom nodes are obtained, and then according to the longitudinal and transverse distribution intervals, the plane distribution positions of all ocean bottom nodes in the collection work area are calculated. The plane distribution position is changed to the model collection coordinate system, and the plane distribution position of the ocean bottom node in the model collection coordinate system is calculated.

[0052] By calculating the plane distribution position of the ocean bottom node in the model collection coordinate system, the simulation of the ocean bottom node collection can be realized.

[0053] S120, according to the model top surface form and the plane distribution position, determine the simulation of each ocean bottom node buried depth.

[0054] Wherein, the model top surface form can be the three-dimensional fluctuation surface form of the model top interface of the three-dimensional physical model, which is matched with the three-dimensional structure form of the seabed surface of the simulation work area.

[0055] In this scheme, the model top surface form can be transformed to the model collection coordinate system, and the plane distribution position can be projected to the model top surface form after the coordinate transformation, to obtain the simulation of each ocean bottom node buried depth.

[0056] Optionally, according to the model top surface form and the plane distribution position, the simulation of each ocean bottom node buried depth is determined, including steps B1-B4:

[0057] Step B1, according to the three-dimensional physical model determined in advance, determine the physical model top surface form;

[0058] Step B2, transform the physical model top surface form to the model collection coordinate to obtain the model top surface form;

[0059] Step B3, project the plane distribution position to the model top surface form to obtain the three-dimensional coordinate information of each ocean bottom node;

[0060] Step B4, according to the three-dimensional coordinate information, determine the simulation of each ocean bottom node buried depth; wherein, the simulation of each ocean bottom node buried depth is used to represent the distance from the lowest point of the seabed surface to the sea surface.

[0061] In this scheme, according to the three-dimensional physical model, the three-dimensional fluctuation surface form of the model top interface can be obtained. The three-dimensional fluctuation surface form of the physical model top interface is transformed to the model collection coordinate system, and the plane distribution position of all nodes in the collection coordinate system is projected to the model top surface form. According to the projection elevation of each node in the model top surface form, the three-dimensional coordinate information of all collection nodes in the model coordinate system can be obtained, that is, the simulation of the seabed buried depth can be obtained.

[0062] By calculating the simulated seabed burial depth, the simulation of the seabed node collection can be realized, which provides good experimental technical support for improving the success rate of marine oil and gas exploration and reducing the cost of marine exploration.

[0063] S130, determine a receiving probe extension rod; wherein the length of the receiving probe extension rod is greater than the maximum water depth of the model.

[0064] In the present scheme, the length of the receiving probe extension rod can be calculated according to the three-dimensional coordinate information, so as to design and process the receiving probe extension rod.

[0065] Optionally, the receiving probe extension rod is determined, including steps C1-C2:

[0066] Step C1, according to the simulated seabed burial depth, determine the maximum simulated experimental water depth from the lowest point of the top surface of the model to the water surface;

[0067] Step C2, according to the maximum simulated experimental water depth, determine the receiving probe extension rod.

[0068] Specifically, the distance from the lowest point of the seabed surface to the water surface is measured according to the three-dimensional coordinate information. According to the physical simulation scale similarity principle, the buried water depth of the actual seabed is scaled to the laboratory scale, the maximum simulated experimental water depth from the lowest point of the top interface of the physical model to the water surface is calculated according to the measured maximum water depth of the seabed surface, and the receiving probe extension rod is designed and processed according to the simulated water depth. The length of the extension rod is required to be greater than the maximum buried water depth of the top surface of the model.

[0069] By designing the receiving probe extension rod, the technical defects that the existing receiving probe can only receive on the water surface and cannot be put into the water, and cannot be soaked in water for a long time are solved.

[0070] Optionally, the receiving probe extension rod is a hollow cylindrical structure, and the material is a resin material with small impedance difference from water;

[0071] The size of the hole at the bottom of the receiving probe extension rod matches the diameter of the ultrasonic wave receiving probe, which is used to load the ultrasonic wave receiving probe, and the size of the hole at the upper part of the receiving probe extension rod matches the size of the signal transmission line.

[0072] Specifically, the receiving probe extension rod is a hollow cylindrical structure, and the material is a resin material with small impedance difference from water; the overall material of the extension rod is uniform and water-tight inside, and can be used for long-term soaking in water.

[0073] The technical defects that the existing receiving probe can only receive on the water surface and cannot be placed in the water and cannot be soaked in the water for a long time are solved by designing the receiving probe extension rod; the technical defects that the conventional seismic physical simulation technology can only use the sea surface excitation / receiving probe and the height of the receiving probe cannot change with the top surface shape of the model are solved; the cylindrical extension rod of the receiving probe is designed, and the processing material is selected as a resin material with small impedance difference from water, so that the influence of the receiving point size on the simulated ultrasonic receiving signal can be greatly reduced.

[0074] In S140, a simulated seabed receiving probe is determined according to the predetermined ultrasonic receiving probe and the receiving probe extension rod; wherein the receiving probe extension rod and the ultrasonic receiving probe are waterproofed by using sealing glue.

[0075] In the scheme, the physical simulation experiment uses an ultrasonic receiving probe to simulate a marine node acquisition receiving device, and the ultrasonic receiving probe is loaded at the bottom of the receiving probe extension rod. The upper signal transmission interface of the receiving probe and the extension rod are waterproofed by using waterproof sealing glue, so as to ensure that the receiving probe and the extension rod form an organic whole, and the receiving probe is placed in the water without leakage and short circuit.

[0076] Optionally, the top of the simulated seabed receiving probe is connected through a coaxial signal line, and is used for receiving signal transmission.

[0077] The receiving probe extension rod is loaded at the bottom of a three-coordinate physical simulation receiving positioning machine tool, and the movement of the receiving probe is realized by controlling the three-dimensional space movement and positioning of the receiving positioning machine tool.

[0078] Specifically, the top of the simulated seabed receiving probe is connected through a coaxial signal line, and the transmission of the received signal is realized through the internal wiring hole of the receiving probe extension rod. The receiving probe extension rod is loaded at the bottom of a three-coordinate physical simulation receiving positioning machine tool, and the three-dimensional positioning of the receiving probe is realized by controlling the three-dimensional space movement and positioning of the receiving machine tool.

[0079] In this embodiment, Figure 2 is a schematic diagram of an experimental device for simulating seabed node acquisition provided in Embodiment One of the present application, as Figure 2 shown, the ultrasonic receiving probe is connected with the bottom of the receiving probe extension rod through sealing waterproof glue. The excitation probe excites ultrasonic signals at the water surface, and the bottom of the simulated seabed receiving probe receives ultrasonic simulation signals at the top node of the undulating model.

[0080] In this scheme, Figure 3 is a schematic diagram of the design form of the receiving probe extension rod and the loading relationship between the receiving probe and the receiving probe extension rod provided in Embodiment One of the present application. As Figure 3As shown, the receiving probe length is designed according to the maximum water depth of the simulation acquisition, the inside is hollow, the bottom is connected with the upper signal transmission joint of the receiving probe through the waterproof sealing glue, the receiving probe can be soaked in water for a long time without short circuit, leakage and other problems, so as to ensure the normal operation of the receiving probe.

[0081] By designing the simulation seabed receiving probe, the simulation of the seabed node acquisition can be realized, which provides good experimental technical support for improving the success rate of marine oil and gas exploration and reducing the cost of marine exploration.

[0082] S150, according to the simulation seabed burial depth, control the top surface of the simulation seabed receiving probe hard contact model, and control the continuous excitation of the excitation probe ultrasonic wave simulation signal, control the continuous reception of the simulation seabed receiving probe ultrasonic wave simulation signal, realize the physical simulation data acquisition of the common receiver point gather of a seabed node.

[0083] In the scheme, the physical simulation data acquisition of the common receiver point gather of a seabed node can be realized based on the simulation seabed receiving probe and the excitation probe. Specifically, the physical simulation data acquisition of the common receiver point gather of a seabed node can be realized by controlling the continuous excitation of the excitation probe ultrasonic wave simulation signal and the continuous reception of the simulation seabed receiving probe ultrasonic wave simulation signal.

[0084] Optionally, according to the simulation seabed burial depth, the top surface of the simulation seabed receiving probe hard contact model is controlled, and the continuous excitation of the excitation probe ultrasonic wave simulation signal is controlled, the continuous reception of the simulation seabed receiving probe ultrasonic wave simulation signal is controlled, and the physical simulation data acquisition of the common receiver point gather of a seabed node is realized, including steps D1-D4:

[0085] Step D1, determining the position relationship between the model acquisition coordinate system and the positioning machine tool coordinate system where the receiving probe is located;

[0086] Step D2, according to the position relationship between the model acquisition coordinate system and the positioning machine tool coordinate system where the receiving probe is located, the three-dimensional coordinate information is converted to obtain target three-dimensional coordinate information;

[0087] Step D3, according to the target three-dimensional coordinate information, control the top surface of the simulation seabed receiving probe hard contact model;

[0088] Step D4, according to the seabed burial depth, control the excitation probe to excite ultrasonic wave simulation signal at different positions on the water surface, control the simulation seabed receiving probe to continuously receive ultrasonic wave simulation signal, realize the physical simulation data acquisition of the common receiver point gather of a seabed node.

[0089] Specifically, the bottom surface of the simulated seabed receiving probe is moved to the position of the center point of the model, the spatial coordinates of the three-dimensional positioning machine tool where the simulated seabed receiving probe is located are measured, the positional relationship between the model acquisition coordinate system and the coordinate system of the positioning machine tool where the receiving probe is located is established according to the coordinate values, the three-dimensional coordinate information of all acquisition nodes in the model coordinate system is converted to the coordinate system of the positioning machine tool, and the target three-dimensional coordinate information is obtained. According to the target three-dimensional coordinate information, the positioning machine tool is controlled to move the simulated seabed receiving probe to the specified position on the top surface of the model, so that the bottom interface of the simulated seabed receiving probe coincides with the position of the node on the top surface of the model. In combination with the three-dimensional spatial positional relationship of the shot points / receiving points in the physical simulation acquisition observation system, the excitation point is controlled to move at different positions on the water surface to excite the ultrasonic simulation signal, and the simulated seabed receiving probe is controlled to continuously receive the ultrasonic simulation signal at the node, so as to realize the physical simulation data acquisition of the common-receiving-point gather of a seabed node.

[0090] By realizing the physical simulation data acquisition of the common-receiving-point gather of a seabed node, the technical defects of the existing seismic physical simulation technology that can only simulate the marine surface streamer acquisition are solved, the technical blank of the seismic physical simulation experiment in the field of seabed node simulation acquisition is filled, and good experimental technical support is provided for improving the success rate of marine oil and gas exploration and reducing the cost of marine exploration.

[0091] S160, moving the simulated seabed receiving probe to the next seabed node position to realize the physical simulation data acquisition of the common-receiving-point gather of the next seabed node.

[0092] In the scheme, the positioning machine tool is controlled to move the simulated seabed receiving probe to the three-dimensional coordinates of the next seabed node on the top surface of the model, the excitation point is controlled to move at different positions on the water surface to excite the ultrasonic simulation signal under the same acquisition template, and the simulated seabed receiving probe is controlled to continuously receive the ultrasonic simulation signal at the node, so as to complete the simulation acquisition work of all seabed nodes corresponding to the same excitation point under the same acquisition template.

[0093] S170, longitudinally and transversely rolling simulation acquisition is performed on the three-dimensional work area until the simulation acquisition of the model three-dimensional work area is completed.

[0094] Specifically, the three-dimensional observation system design template is acquired according to the physical model, S150 and S160 are repeated, the longitudinal nodes and excitation lines of the three-dimensional simulation acquisition work area are rolled, the three-dimensional simulation acquisition in the Y direction of the physical model is completed, the transverse nodes and excitation lines of the three-dimensional simulation acquisition work area are rolled and acquired, and all X direction simulation acquisition of the physical model is realized. When the longitudinal / transverse rolling simulation is completed, the three-dimensional node simulation acquisition work of the physical model is completed.

[0095] The wave field propagation law of the simulation seabed is matched with the actual data collected by the actual seabed node, while ensuring that the collection accuracy and collection efficiency are basically the same as those of the traditional high-efficiency collection mode, and the coincidence degree and reliability of the seismic physical simulation experiment result and the actual seabed node collection data are greatly improved, which provides good experimental technical support for improving the success rate of marine oil and gas exploration and reducing the cost of marine exploration.

[0096] The technical scheme of the embodiment of the present application comprises the following steps: obtaining the planar distribution position of the seabed node in the model collection coordinate system; determining the simulation seabed burial depth of each seabed node according to the model top surface shape and the planar distribution position; determining the receiving probe extension rod; determining the simulation seabed receiving probe according to the pre-determined ultrasonic receiving probe and the receiving probe extension rod; controlling the simulation seabed receiving probe to hard contact the model top surface according to the simulation seabed burial depth, and controlling the excitation probe to continuously excite the ultrasonic simulation signal and control the simulation seabed receiving probe to continuously receive the ultrasonic simulation signal, so as to realize the physical simulation data collection of the common receiver point gather of one seabed node; moving the receiving probe to the next seabed node position to realize the physical simulation data collection of the common receiver point gather of the next seabed node; longitudinally and laterally rolling simulation collection is performed on the three-dimensional work area until the simulation collection of the model three-dimensional work area is completed. Through the execution of the technical scheme, the physical simulation experiment is more matched with the actual seabed node exploration process, the receiving probe can contact the seabed surface to collect signals, the simulated seismic wave field propagation law and propagation path are consistent with the actual collection result, and the collection accuracy and collection efficiency of the simulation data can meet the use demand of experimental production. The technical defects of the existing seismic physical simulation technology that can only simulate the marine sea surface streamer collection are solved, the technical blank of the seabed node simulation collection in the field of seismic physical simulation experiment is filled, and good experimental technical support is provided for improving the success rate of marine oil and gas exploration and reducing the cost of marine exploration.

[0097] In the embodiment, Fig. 4(a) is a receiving node plane placement position provided by the embodiment one of the application, Fig. 4(b) is a physical model top surface three-dimensional configuration form provided by the embodiment one of the application, and Fig. 4(c) is node three-dimensional coordinate information on the model top surface provided by the embodiment one of the application. The experimental research model is a three-dimensional physical model with a length of 1m, a width of 1m and a thickness of 0.5m, simulating an actual 10000m*10000m*5000m three-dimensional work area according to a simulation scale ratio of 1:10000. The model top surface is a certain undulating inclined stratum form. As shown in Fig. 4(a), the distribution area on the receiving node plane is determined according to the acquisition observation system: the longitudinal distribution interval of the acquisition node is 200m, the transverse distribution interval is 200m, and a total of 2601 (51*51) node plane distribution positions can be obtained. As shown in Fig. 4(b), according to the three-dimensional physical model manufacturing result, the three-dimensional configuration form of the model top surface after the physical model manufacturing is completed can be obtained, and combined with the acquisition water depth of the physical model simulation work area, the three-dimensional elevation information of the model top surface in the acquisition coordinate system can be obtained. As shown in Fig. 4(c), the node plane distribution position is projected to the model top surface, and the three-dimensional coordinate information of all 2601 nodes in the acquisition coordinate system is obtained.

[0098] Further, according to the three-dimensional coordinate information of the 2601 nodes, the distance from the lowest point of the model top surface to the water surface can be measured as 1500m, which is scaled to the model scale according to the ratio of 1:10000 to correspond to a water depth of 150mm. According to the maximum water depth, a receiving probe extension rod is designed and manufactured Figure 3 As shown in the receiving probe extension rod, the processing length is at least 150mm, the inside is hollow, the bottom opening diameter is 14mm (matching the diameter of the receiving probe top joint), the upper wiring groove opening diameter is 4mm (diameter 3mm signal line and passing through), the receiving probe top is sealed with the receiving probe extension rod bottom through waterproof sealing glue, and the receiving signal is transmitted to the acquisition terminal through the internal signal transmission line of the extension rod.

[0099] In the scheme, the physical model three-dimensional acquisition template is a three-dimensional acquisition construction template with 20 nodes / 100 shots / 2 shot lines, wherein the node Y direction interval is 200m, the shot point X direction running interval is 40m, and the shot line interval is 40m. Figure 5 is a specific acquisition schematic diagram provided by the embodiment one of the application, wherein the left of the figure shows a three-dimensional observation system acquisition construction template. As shown in the right of the figure, according to the receiving node depth Figure 5 As shown, according to the receiving node three-dimensional coordinate information, the receiving positioning machine tool controls the model top surface of the simulated seabed receiving probe bottom surface hard contact model, controls the excitation probe to move on the water surface to excite 2 shot line 200 shot signals, positions the simulated seabed receiving probe to the next node, controls the excitation probe to repeatedly move at the same position to excite 2 shot line 200 shot signals. The above acquisition is repeated for 20 times, and the acquisition of one observation system template is completed.

[0100] Specifically, Figure 6 is a schematic diagram of three-dimensional rolling acquisition provided by the embodiment one of the present application. As shown in the figure, Figure 6 after a three-dimensional acquisition construction template completes simulation acquisition, through repeating S150 and S160, the three-dimensional simulation acquisition work area is rolled in longitudinal nodes and excitation lines (each time the Y direction rolling distance is 80m), the three-dimensional simulation acquisition in the Y direction of the physical model is completed; the three-dimensional simulation acquisition work area is rolled in transverse nodes and excitation lines (each time the X direction rolling distance is 200m), all X direction simulation acquisition of the physical model is realized. When the above longitudinal / transverse rolling simulation is completed, the three-dimensional node simulation acquisition work of the physical model is completed.

[0101] Embodiment two

[0102] Figure 7 is a structure schematic diagram of an experimental device for simulating seabed node acquisition provided by the embodiment two of the present application. As shown in the figure, Figure 7 the device comprises:

[0103] a plane distribution position acquisition module 710, configured to acquire the plane distribution position of the seabed node in the model acquisition coordinate system;

[0104] a seabed buried depth determination module 720, configured to determine the simulated seabed buried depth of each seabed node according to the model top surface morphology and the plane distribution position;

[0105] a receiving probe lengthening rod determination module 730, configured to determine a receiving probe lengthening rod; wherein the length of the receiving probe lengthening rod is greater than the maximum water depth of the model;

[0106] a receiving probe determination module 740, configured to determine a simulated seabed receiving probe according to a pre-determined ultrasonic receiving probe and the receiving probe lengthening rod; wherein the receiving probe lengthening rod and the ultrasonic receiving probe are waterproofed by using sealing glue;

[0107] a data acquisition module 750, configured to control the simulated seabed receiving probe to hard contact the model top surface according to the simulated seabed buried depth, and control the excitation probe to continuously excite ultrasonic simulation signals and control the simulated seabed receiving probe to continuously receive ultrasonic simulation signals, so as to realize the physical simulation data acquisition of the common receiver point gather of one seabed node;

[0108] a probe moving module 760, configured to move the simulated seabed receiving probe to the next seabed node position, so as to realize the physical simulation data acquisition of the common receiver point gather of the next seabed node;

[0109] a simulation acquisition module 770, configured to perform longitudinal and transverse rolling simulation acquisition on the three-dimensional work area, until the three-dimensional work area simulation acquisition of the model is completed.

[0110] Optionally, the plane distribution position acquisition module 710 is specifically configured to:

[0111] acquire the longitudinal and transverse distribution interval of the seafloor nodes;

[0112] calculate the plane distribution positions of all the seafloor nodes in the collection work area according to the longitudinal and transverse distribution interval;

[0113] change the plane distribution position coordinates to the model collection coordinate system, and calculate the plane distribution positions of the seafloor nodes in the model collection coordinate system.

[0114] Optionally, the seafloor buried depth determination module 720 is specifically configured to:

[0115] determine the top surface form of the physical model according to the pre-determined three-dimensional physical model;

[0116] transform the top surface form of the physical model to the model collection coordinate system to obtain the model top surface form;

[0117] project the plane distribution positions to the model top surface form to obtain the three-dimensional coordinate information of each seafloor node;

[0118] determine the simulated seafloor buried depth of each seafloor node according to the three-dimensional coordinate information; wherein the simulated seafloor buried depth is used to represent the distance from the lowest point of the seafloor surface to the water surface.

[0119] Optionally, the receiving probe extension rod determination module 730 is specifically configured to:

[0120] determine the maximum simulated experimental water depth from the lowest point of the model top surface to the water surface according to the simulated seafloor buried depth;

[0121] determine the receiving probe extension rod according to the maximum simulated experimental water depth.

[0122] Optionally, the data collection module 750 is specifically configured to:

[0123] determine the positional relationship between the model collection coordinate system and the positioning machine tool coordinate system in which the receiving probe is located;

[0124] convert the three-dimensional coordinate information according to the positional relationship between the model collection coordinate system and the positioning machine tool coordinate system in which the receiving probe is located, to obtain target three-dimensional coordinate information;

[0125] control the simulated seafloor receiving probe to hard contact the model top surface according to the target three-dimensional coordinate information;

[0126] According to the simulated sea bottom buried depth, the excitation probe is controlled to excite ultrasonic wave simulation signals at different positions on the water surface, and the simulated sea bottom receiving probe is controlled to continuously receive the ultrasonic wave simulation signals, so that the physical simulation data acquisition of the common receiver point gather of one sea bottom node is realized.

[0127] Optionally, the receiving probe elongated rod is a hollow cylindrical structure, and the material is a resin material with small impedance difference with water.

[0128] The receiving probe elongated rod bottom opening size is matched with the diameter of the ultrasonic wave receiving probe, and is used for loading the ultrasonic wave receiving probe, and the receiving probe elongated rod upper opening size is matched with the size of the signal transmission line.

[0129] Optionally, the top of the simulated sea bottom receiving probe is connected through a coaxial signal line, and is used for receiving signal transmission.

[0130] The receiving probe elongated rod is loaded on the three-coordinate physical simulation receiving positioning machine bed bottom, and the movement and positioning of the receiving positioning machine bed in three-dimensional space are controlled to realize the movement of the simulated sea bottom receiving probe.

[0131] The experimental device for simulating the sea bottom node collection provided in the embodiment can execute the experimental method for simulating the sea bottom node collection provided in any embodiment of the present application, has the corresponding function modules and beneficial effects of the execution method.

[0132] Embodiment three

[0133] Figure 8 A structural diagram of an electronic device 10 that can be used to implement embodiments of the present application is shown. The electronic device is intended to represent various forms of digital computers, such as laptops, desktops, tablets, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular telephones, smart phones, wearable devices (e.g., headsets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be examples only, and are not intended to limit the implementations of the present application described and / or claimed in this document.

[0134] As Figure 8As shown, the electronic device 10 includes at least one processor 11, and a memory, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., connected to the at least one processor 11 in communication. The memory stores computer programs executable by the at least one processor 11, and the processor 11 can perform various appropriate actions and processes according to the computer programs stored in the read-only memory (ROM) 12 or loaded from the storage unit 18 into the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0135] Various components in the electronic device 10 are connected to the I / O interface 15, including an input unit 16, such as a keyboard, a mouse, etc., an output unit 17, such as various types of displays, a speaker, etc., a storage unit 18, such as a magnetic disk, an optical disk, etc., and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network, such as the Internet, and / or various telecommunication networks.

[0136] The processor 11 can be various general and / or special-purpose processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 performs various methods and processes described above, such as the experimental method of simulating seafloor node acquisition.

[0137] In some embodiments, the experimental method of simulating seafloor node acquisition can be implemented as a computer program tangibly embodied in a computer readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed onto the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the experimental method of simulating seafloor node acquisition described above can be performed. Alternatively, in other embodiments, the processor 11 can be configured to perform the experimental method of simulating seafloor node acquisition by any other appropriate means, such as by means of firmware.

[0138] The various embodiments of the systems and techniques described above can be implemented in digital electronic circuitry, integrated circuitry, a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on a chip (SOC), a load programmable logic device (CPLD), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include implementation in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be special or general purpose, coupled to receive data and instructions from, and to transmit data and instructions to, a storage system, at least one input device, and at least one output device.

[0139] Computer programs used to implement the processes of the application can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer program, when executed, can cause instructions defined in the flow charts and / or block diagrams to be implemented on the computer or other programmable apparatus. The computer programs can be executed entirely on a machine, partially on a machine, partially on a machine as a stand-alone software package, partially on a machine and partially on a remote machine or entirely on a remote machine or server.

[0140] In the context of the present application, a computer-readable storage medium can be a tangible medium that can contain or store computer programs for use by or in connection with an instruction execution system, apparatus, or device. Computer-readable storage media can include, but are not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium can be a machine-readable signal medium. More specific examples of the machine-readable storage medium will include one or more lines of electrical connections, portable computer disks, hard disk drives, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or Flash memory), optical fibers, portable compact disc read-only memories (CD-ROMs), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0141] To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the electronic device. Other kinds of devices can be used to provide for interaction with a user as well; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.

[0142] The systems and techniques described here can be implemented in a computing system that includes a back end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front end component (e.g., a user computer having a graphical user interface or a Web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back end, middleware, or front end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0143] The computing system can include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. A server can be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system, to solve the defects of large management difficulty and weak business scalability in traditional physical host and VPS service.

[0144] It should be understood that the various forms of flow shown above can be re-ordered, added to, or deleted from without departing from the scope of the present disclosure. For example, the steps recited in the present disclosure can be executed in parallel, executed in sequence, or executed in a different order, as long as the desired results of the present disclosure are achieved, and the present disclosure is not limited herein.

[0145] The specific embodiments described above are not intended to be limiting, and persons skilled in the art will appreciate that various modifications, combinations, sub-combinations and alternatives can be made to the specific embodiments without departing from the spirit and principles of the disclosure. Accordingly, the disclosure is not limited to the specific embodiments described above, but only by the scope of the appended claims.

Claims

1. A method of simulating an experiment collected by a seafloor node, characterized by, The method comprises the following steps: acquiring the planar distribution position of a seabed node in a model acquisition coordinate system; determining the simulated seabed burial depth of each seabed node according to the top surface shape of the model and the planar distribution position; determining a receiving probe extension rod; wherein the length of the receiving probe extension rod is greater than the maximum water depth of the model; determining a simulated seabed receiving probe according to the pre-determined ultrasonic receiving probe and the receiving probe extension rod; wherein the receiving probe extension rod and the ultrasonic receiving probe are waterproofed by using sealing glue; controlling the simulated seabed receiving probe to hard contact the top surface of the model, and controlling the excitation probe to continuously excite ultrasonic simulation signals and control the simulated seabed receiving probe to continuously receive ultrasonic simulation signals, so as to realize the physical simulation data acquisition of the common receiver point gather of one seabed node; moving the simulated seabed receiving probe to the position of the next seabed node to realize the physical simulation data acquisition of the common receiver point gather of the next seabed node; performing longitudinal and transverse rolling simulation acquisition on the three-dimensional work area until the three-dimensional work area simulation acquisition of the model is completed.

2. The method of claim 1, wherein, The method for acquiring the planar distribution position of a seabed node in a model acquisition coordinate system comprises the following steps: acquiring the longitudinal and transverse distribution interval of the seabed node; calculating the planar distribution position of all seabed nodes in the acquisition work area according to the longitudinal and transverse distribution interval; changing the planar distribution position coordinates to the model acquisition coordinate system to calculate the planar distribution position of the seabed node in the model acquisition coordinate system.

3. The method of claim 1, wherein, The method for determining the simulated seabed burial depth of each seabed node according to the top surface shape of the model and the planar distribution position comprises the following steps: determining the top surface shape of the physical model according to the pre-determined three-dimensional physical model; transforming the top surface shape of the physical model to the model acquisition coordinate to obtain the top surface shape of the model; projecting the planar distribution position to the top surface shape of the model to obtain the three-dimensional coordinate information of each seabed node; determining the simulated seabed burial depth of each seabed node according to the three-dimensional coordinate information; wherein the simulated seabed burial depth is used to represent the distance from the lowest point of the seabed surface to the water surface.

4. The method of claim 3, wherein, The method for determining the receiving probe extension rod comprises the following steps: determining the maximum simulated experimental water depth from the lowest point of the top surface of the model to the water surface according to the simulated seabed burial depth; determining the receiving probe extension rod according to the maximum simulated experimental water depth.

5. The method of claim 3, wherein, The method for controlling the simulated seabed receiving probe to hard contact the top surface of the model, and controlling the excitation probe to continuously excite ultrasonic simulation signals and control the simulated seabed receiving probe to continuously receive ultrasonic simulation signals, so as to realize the physical simulation data acquisition of the common receiver point gather of one seabed node, comprises the following steps: determining the positional relationship between the model acquisition coordinate system and the positioning machine tool coordinate system where the receiving probe is located; calculating the three-dimensional coordinate information to obtain target three-dimensional coordinate information according to the positional relationship between the model acquisition coordinate system and the positioning machine tool coordinate system where the receiving probe is located; controlling the simulated seabed receiving probe to hard contact the top surface of the model according to the target three-dimensional coordinate information; According to the simulated sea bottom buried depth, the excitation probe is controlled to excite ultrasonic simulation signals at different positions on the water surface, and the simulated sea bottom receiving probe is controlled to continuously receive the ultrasonic simulation signals, so as to realize physical simulation data acquisition of the common receiver point gather of one sea bottom node.

6. The method of claim 1, wherein, The receiving probe extension rod is a hollow cylindrical structure, and is made of resin material with small impedance difference with water; The bottom hole of the receiving probe extension rod is matched with the diameter of the ultrasonic receiving probe, and is used for loading the ultrasonic receiving probe; the upper hole of the receiving probe extension rod is matched with the size of the signal transmission line.

7. The method of claim 1, wherein, The top of the simulated sea bottom receiving probe is connected through a coaxial signal line, and is used for receiving signal transmission; The receiving probe extension rod is loaded on the bottom of the three-coordinate physical simulation receiving positioning machine tool, and the movement of the receiving positioning machine tool in three-dimensional space is controlled to realize the movement of the simulated sea bottom receiving probe.

8. Experimental apparatus for simulating a node on the sea floor, characterized in that, Comprise: A plane distribution position acquisition module is configured to acquire the plane distribution position of the sea bottom node in a model acquisition coordinate system; A sea bottom buried depth determination module is configured to determine the simulated sea bottom buried depth of each sea bottom node according to the model top surface shape and the plane distribution position; A receiving probe extension rod determination module is configured to determine the receiving probe extension rod; wherein the length of the receiving probe extension rod is greater than the maximum water depth of the model; A receiving probe determination module is configured to determine the simulated sea bottom receiving probe according to the pre-determined ultrasonic receiving probe and the receiving probe extension rod; wherein the receiving probe extension rod and the ultrasonic receiving probe are waterproofed by using sealing glue; A data acquisition module is configured to control the simulated sea bottom receiving probe to hard contact the model top surface, and to control the excitation probe to continuously excite ultrasonic simulation signals, and to control the simulated sea bottom receiving probe to continuously receive the ultrasonic simulation signals, so as to realize physical simulation data acquisition of the common receiver point gather of one sea bottom node according to the simulated sea bottom buried depth; A probe movement module is configured to move the simulated sea bottom receiving probe to the position of the next sea bottom node, so as to realize physical simulation data acquisition of the common receiver point gather of the next sea bottom node; An analog acquisition module is configured to perform longitudinal and transverse rolling analog acquisition on the three-dimensional work area until the analog acquisition of the model three-dimensional work area is completed.

9. An electronic device, comprising: The electronic device comprises: at least one processor; and a memory connected with the at least one processor in communication; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the experimental method for analog sea bottom node acquisition according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer instructions, and the computer instructions are used to enable the processor to execute the experimental method for analog sea bottom node acquisition according to any one of claims 1-7.

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