52 results about "Shot point" patented technology

The invention provides a method for quickly establishing a three-dimensional near-seafloor speed model in a shallow sea area; the method comprises the following steps of extracting initial informationand extracting a common-center-point gather; calculating the slope of the initial travel time in the common-center-point gather; judging whether a shot point is located in the seawater layer or not,and if yes, correcting the shot point to the seafloor; calculating the speed and the depth of inflection points corresponding to respective offset distances; performing linear interpolation on the speed at each depth to obtain a one-dimensional speed model of the common center point; after all the common-center point domain gathers are processed, adopting the linear interpolation method, calculating the speed values of the rest grid points by utilizing the one-dimensional speed model of all common center points, and a speed model is output. By adoption of the method for quickly establishing the three-dimensional near-seafloor speed model in the shallow sea area, the influence of the seawater layer on ray propagation is overcome, and the influence of multiple excitation receiving modes on an inversion result is eliminated, and the problem that the conventional method needs to carry out multi-ray tracing forward modeling is avoided.

This application discloses a method for deploying a three-dimensional observation system, an electronic device, and a readable storage medium. The method includes: acquiring the geophone parameters and shot point parameters corresponding to the unit template; constructing a target geophone set based on the geophone parameters; the target geophone set including the coordinates of each geophone; constructing rolling parameters and work area deployment boundaries; performing geophone rolling filling based on the target geophone set, work area deployment boundaries, and rolling parameters to obtain the latest geophone set; performing shot point filling based on the latest geophone set and shot point parameters to obtain a shot point set, and calculating the shot point relationship arrangement; and performing deployment verification based on the latest geophone set, shot point set, and relationship arrangement to obtain the three-dimensional observation system. This method improves the deployment efficiency of the three-dimensional observation system, and the deployment results are regular, facilitating construction.

The invention provides an efficient cooperative construction method, device and equipment for simultaneous operation of multiple geophysical prospecting teams, relates to the technical field of seismic prospecting, and aims to solve the problem that the construction efficiency is low under the condition that the distance between shot points constructed by the multiple geophysical prospecting teams in the same time window in adjacent work areas is smaller than the minimum distance of synchronous excitation in the prior art. The method comprises the following steps: integrating adjacent work areas for analysis, calculating the lower limit value of the root-mean-square energy of the upper cannon interference of a conventional production cannon, and drawing a first time distance curve meeting the condition that the upper cannon interference is not greater than that of the production cannon by utilizing a single-cannon data single-cannon energy attenuation time-space domain distribution plane graph of a long-record long-arrangement-point test; according to the seismic data of the work area, obtaining the lowest refracted wave speed, and calculating a second time distance relation curve when the last shot refracted wave does not enter the single shot data; and an area clamped by the first gun loading interference time distance curve and the second gun loading interference time distance curve is used as a distance range of staggered excitation of two guns in adjacent work areas, a blasting time interval is dynamically calculated, and staggered excitation is carried out.

This application relates to a method for determining remaining shot pairs, a method for determining the vacancy and occupancy of geophysical equipment, electronic equipment, and a method for rolling operation of geophysical equipment, relating to the field of seismic data acquisition technology in petroleum exploration. The method for determining remaining shot pairs includes: determining shot point data for all shot points to be excited in the scheme, geophone point data for all geophones in the scheme, and shot-geophone relationship data based on work area data and acquisition construction scheme; determining the shot pair values ​​of geophones falling within a preset acquisition construction template range based on the above data; and determining the remaining shot pairs of geophones based on the shot pair values ​​of the geophones and the information of shot points already excited within the acquisition construction template range obtained during construction. The method further includes: when the remaining shot pair value of a geophone within the acquisition construction template is 0, moving the geophone within the template to the preset position of the geophone in the next round of the construction scheme, and calculating the remaining shot pairs of the geophone.

The application provides a seismic trace stacking method with trace header information protection, comprising the following steps: step 1, data preparation; step 2, resetting the receiver point stake number; step 3, calculating the average value of all pre-stack trace header information of the same receiver point stake number; step 4, stacking the seismic traces of the same receiver point stake number; step 5, assigning the pre-stack trace header information value to the post-stack seismic trace corresponding to the receiver point stake number; step 6, resetting the shot point stake number; step 7, calculating the average value of all pre-stack trace header information of the same shot point stake number; step 8, stacking the seismic traces of the same shot point stake number; step 9, assigning the pre-stack trace header information average value to the post-stack seismic trace corresponding to the shot point stake number; and step 10, sorting the shot point receiver point stake number and outputting data. The seismic trace stacking method with trace header information protection is reliable in effect, simple in operation and easy to realize, and can maximize the reservation of pre-stack trace header information while keeping the basic properties unchanged.

The present application relates to the field of visual detection technology of optical module industry, and provides a method and device applied to AOI detection. A low-power microscopic imaging module of a fixed shot visual subsystem is controlled to acquire a global image of a detection object on an object platform, and each flying shot point coordinate is located from the global image; according to the each flying shot point coordinate, a motion shaft is controlled to drive the flying shot visual subsystem to move, and a plurality of local high-definition images are acquired by performing flying shot on each flying shot point; the acquired plurality of local high-definition images are spliced into a complete to-be-detected image with the global image as a background; each regional image is obtained by performing regional cutting on the to-be-detected image according to the category of the to-be-detected object; and the defect category of each regional image is determined according to a defect feature, and a defect detection result is generated. The present application solves the problem that large-area defects are not fully extracted and are incomplete, and ensures the comprehensiveness and accuracy of detection.

The application provides a method and device for selecting seismic data and a computer device, and belongs to the technical field of seismic exploration. The method comprises the following steps: obtaining seismic data of a work area to be studied; obtaining a first attribute parameter of each shot point, a second attribute parameter of each receiver point, and a third attribute parameter of each bin point; selecting at least one target shot point, at least one target receiver point, and at least one target bin point from a plurality of shot points, a plurality of receiver points, and a plurality of bin points based on the first attribute parameter of each shot point, the second attribute parameter of each receiver point, and the third attribute parameter of each bin point; and determining target seismic data based on first seismic data of each target shot point, second seismic data of each target receiver point, and third seismic data of each target bin point, wherein the target seismic data is used for underground structure imaging. The method improves the accuracy of the target seismic data used for underground structure imaging.

The invention relates to an offshore time-lapse seismic basic data shot point repeatability evaluation method, which comprises the following steps of: determining the direction of a shot line, scanning the position of the shot line, and forming a pre-drawn shot line cluster; determining the direction of a tie line, and scanning the position of the tie line; on the basis of the pre-drawn shot line cluster, the pre-drawn shot line closest to the actual shot line is found; on the basis of the tie line position and the pre-drawn shot line cluster, determining pre-drawn grid intersection points; according to the actual shot line acquisition direction, determining the shot point position of the pre-drawn shot line; calculating a position error between the shot point of the previously drawn shot line closest to the actual shot line and the shot point of the corresponding actual shot line, and drawing a map; the repeatability of actual shot lines and shot points is evaluated, and the smaller the error is, the better the repeatability is.

The present application relates to the technical field of seismic data processing, and particularly relates to a seismic data sampling method, device, equipment, medium and product, wherein the method comprises: substituting shot point data of an initial bubble point set into a point density function to obtain a point density function value of a shot point; if the point density function value of the shot point is greater than a point density threshold value, deleting the shot point to obtain an intermediate shot point set; judging whether the point density function values of all shot points of the intermediate shot point set are all less than or equal to the point density threshold value; if the point density function values of all shot points of the intermediate shot point set are all less than or equal to the point density threshold value, taking the intermediate shot point set as a uniform shot point set, and randomly sampling shot points of the uniform shot point set; the uniformity of random sampling can be improved.

The invention belongs to the technical field of seismic exploration and detection, and particularly relates to a seismic data processing method for OVT continuous processing. The seismic data processing method for OVT contiguous processing comprises the following steps: acquiring contiguous processing seismic data A including unilateral blasting data A1 and bilateral blasting data A2, respectively assigning a detection point coordinate value and a shot point coordinate value of the seismic data A1 to an idle header word, and then assigning a detection point coordinate value in the header word to a shot point coordinate value; and assigning the shot point coordinate values to the detection point coordinates to obtain single-side blasting data B2 with interchanged shot point coordinates, combining A1 and B2 to form pseudo double-side blasting data B3, and combining B3 and A2 to obtain double-side blasting seismic data C for continuous processing. According to the method, the reversible principle of wave propagation is applied, OVT piece data on the missing side are compensated, pseudo bilateral blasting seismic data are obtained, OVT piece connecting processing can be achieved, and seismic data interpretation, reservoir prediction and crack prediction precision is effectively improved.

The invention discloses a three-dimensional observation system design method and device based on vibroseis efficient acquisition and a medium. The method comprises the following steps: S1, selecting a three-dimensional observation system template; the method comprises the following steps: a, confirming the number of receiving lines, the distance between the receiving lines, the number of receiving points and the distance between the receiving points in a three-dimensional observation system template; b, confirming the number of shot points, the shot line distance and the shot point distance in the three-dimensional observation system template; s2, performing template transformation; s2, transforming the three-dimensional observation system template in the step S1, and thinning the number of detection points to be half of the original number by changing the receiving point pitch or the receiving line pitch of a detector; by changing the shot point distance or the shot line distance, the shot point number is encrypted to be two times of the original number; and S3, applying the new template to arrange the shot-geophone points, and generating a new shot-geophone relationship. On the premise of obtaining the effect consistent with that of the original seismic data acquisition method, the exploration cost is greatly reduced, and the wide azimuth and shallow coverage of the acquired data are met; the method is suitable for efficient collection construction of the shallow vibroseis.

The present application relates to the technical field of seismic data processing, etc. Provided in the embodiments of the present application are a seismic data imaging processing method and an apparatus. The method comprises: taking the horizontal plane where a shot point is located as a datum plane, separately performing shot point datum plane correction on a first longitudinal wave stacking velocity, a first longitudinal wave stacked section, a first converted wave stacking velocity, a first kappa and a first converted wave stacked section under dual datum planes, so as to obtain a second longitudinal wave stacking velocity, a second longitudinal wave stacked section, a second converted wave stacking velocity, a second kappa and a second converted wave stacked section under the shot point datum plane. Thus, real positions of receiver points and the shot point can be accurately reflected, thus improving the accuracy of converted-wave prestack time migration imaging results.

The invention provides a method and device for determining shot point excitation time and a storage medium, and belongs to the field of seismic exploration. The method comprises the following steps: determining first excitation time for generating each shot point corresponding to an irregular shot point layout, then determining vibration time based on a preset distance between a plurality of seismic source ships in a target area and a shot point distance between adjacent shot points, obtaining actual excitation time of the shot points based on the first excitation time and the vibration time, and generating the irregular shot point layout according to the actual excitation time. In this way, when the actual excitation time of the shot points is determined, not only is the first excitation time for generating the irregular shot point layout based on, but also the influence of the distance between a plurality of preset seismic source ships in the target area and the shot point distance between the adjacent shot points on the excitation time is considered. Therefore, the separation effect of the seismic exploration high-efficiency aliasing acquisition data is improved.

This invention discloses a source excitation control method, apparatus, equipment, and related system. The method includes: receiving a detonation request sent by an encoder, the detonation request being generated by a decoder connected to the encoder; generating a shot point excitation command based on the detonation request, and sending the shot point excitation command to the corresponding decoder through the encoder, so that the decoder controls the detonation of the shot point connected to it; acquiring quality control data received by the encoder, and marking the quality control data. Based on a grid-managed excitation control method, this invention solves the limitations of traditional source excitation which can only have one encoder and the requirement for a large number of decoders for field seismic data acquisition, greatly improving construction efficiency. It also solves the problem of radio signal coverage with a single encoder, making excitation operations more flexible and providing a more efficient field source excitation seismic data acquisition mode for large-scale and complex onshore seismic exploration in mountainous areas.

The invention discloses a method and a device for identifying and filling an acquisition data air mining area, a medium and terminal equipment, and the method comprises the following steps: 1, obtaining the actual shot point position information and the detection point position information of a whole work area, calculating shot point regularization target points and detection point regularization target points of the whole work area in combination with parameters of a work area acquisition observation system; step 2, establishing an initial grid; 3, screening out an initial empty grid; 4, establishing an expansion initial empty grid and screening out an initial shot point regularization target point; 5, establishing a correction grid, screening out a correction empty grid, screening out a final shot point regularization target point, and screening out a detection point regularization target point in combination with shot and detection point relation information; and step 6, performing data filling on the acquired data empty mining area by using a data regularization processing method. According to the invention, the accuracy of data filling in the air mining area and the working efficiency of data regularization processing in the air mining area can be effectively improved.

Embodiments of the present application provide a shot point OVT domain uniformity evaluation method and device, computer equipment and a storage medium, the method comprising: taking a CMP surface element point closest to a middle shot point of a target work area as a center, and performing OVT grid division on a shot domain of the target work area; counting the number of shot points in the OVT grid of the shot domain, and performing OVT domain uniformity evaluation on the shot points of the target work area according to the number of shot points in the OVT grid of the shot domain, which can quickly evaluate the uniformity of field shot points, thereby guiding the uniform arrangement of shot points, while meeting the requirements of OVT domain pre-stack migration processing.

The invention relates to a shot point delay coupling method and device, a storage medium and electronic equipment. The method comprises the following steps: carrying out grid division on shot points arranged in a target work area based on a grid division strategy; aiming at each divided grid work area, respectively obtaining a shot point delay time average value and a detection point delay time average value, and a delay time grid correction time difference corresponding to the grid work area; on the basis of a preset neighbor grid selection strategy, smoothing each delay grid correction time difference to obtain a corresponding delay grid correction smoothing time difference; aiming at the delay grid correction smoothing time difference corresponding to each grid working area, correcting shot point delay time in the grid working area based on the delay grid correction smoothing time difference corresponding to the grid working area to obtain shot point correction delay time, and correcting detection point delay time in the grid working area to obtain shot point correction delay time; and obtaining the correction delay time of the detection point. The accuracy of the obtained correction delay can be improved.

The application discloses a seismic data analysis method, device and computer equipment, and belongs to the technical field of geophysical exploration. The method provided by the embodiment of the application displays attribute information of a plurality of target shot points corresponding to each seafloor node on a first image based on coordinate information of each seafloor node and coordinate information of each target shot point corresponding to each seafloor node, obtains a plurality of first images, and can analyze the plurality of target shot points of the same seafloor node through the first image. The plurality of seafloor nodes can be analyzed by displaying the plurality of first images on a second image, the time is greatly shortened, and the analysis efficiency is improved.

The invention relates to the technical field of seismic data acquisition, in particular to a VSP data segmentation method, device and equipment in well-ground joint acquisition and a medium. The seismic source excitation time of each shot point and the instrument recording time of the seismic signal recording system are aligned to the same time reference; segmenting a plurality of preliminary data segments from the original seismic record based on the aligned seismic source excitation time; if the number of the segmented preliminary data segments is not consistent with the number of the actually excited shot points, determining a target time range corresponding to the shot points which are not successfully segmented in the original seismic record based on the excitation time information of the adjacent shot points; within the target time range, positioning and segmenting missing supplementary data segments; and obtaining a segmentation result according to the preliminary data segment and the supplementary data segment. And systematized and automatic processing of the original continuous seismic records obtained in a high-efficiency acquisition mode is realized.

The invention relates to the technical field of geophysical exploration seismic data processing, and discloses a VSP shot point residual static correction value solving method. The method comprises the following steps of 1, inputting preprocessed VSP seismic data, a basic static correction value and a speed model; 2, performing non-longitudinal measurement correction on shot point positions, sorting the shot point positions into common receiving point gathers, and constructing a VSPCDP stacked section; 3, inputting a single-shot reflection wave channel set one by one, and constructing a single-shot VSPCDP profile; 4, for each shot, carrying out cross-correlation calculation on the VSPCDP profile of the single shot and the corresponding nearest channel in the VSPCDP stacked profile one by one, solving cross correlation coefficients in a set time window, and determining the residual static correction value of the shot based on the principle that the sum of the cross correlation coefficients is maximum; and step 5, iteratively executing the step 2 to the step 4 until the final residual static correction value of each shot is obtained. After the VSP data is subjected to residual static correction processing through the method, the signal-to-noise ratio of an imaging profile is remarkably improved.

This application relates to a shot point layout method and apparatus, and a seismic data acquisition method and electronic equipment based on well-seismic fusion shot point design. The shot point layout method includes: acquiring acquisition task information and observation system parameters, wherein the acquisition task information includes frequency information required by the task, and the observation system parameters include source shot point density; wherein the observation system parameters are parameters used when performing the acquisition task in a source construction manner; acquiring the design well-seismic ratio; wherein the seismic data obtained by construction with the design well-seismic ratio meets the requirements of the frequency information; determining the shot row spacing, shot point location, number of well-shot shot point rows to be laid, and number of source shot point rows according to the source shot point density and the design well-seismic ratio; and laying the well-shot shot points and the source shot points according to the shot row spacing, the shot point location, the number of well-shot shot point rows, and the number of source shot point rows.

The application discloses a seismic wave forward simulation method, device and equipment and a storage medium. The method comprises the following steps: constructing a marine geology model, setting a seismic wave field to be excited from a set depth of a shot point position, generating an upgoing wave and a downgoing wave, loading a last round of a geophone wave field as a secondary virtual field source at a position above the shot point during propagation of the downgoing wave, and simultaneously propagating a real field source and the secondary virtual field source at a position below the shot point; during propagation of the upgoing wave, only the secondary virtual source propagates below the shot point, and the upgoing wave above the shot point contains a real shot point signal and a secondary virtual field source signal; after iterative calculation, multiple wave and ghost wave information of marine seismic data are simulated and separated, and accurate seismic wave data are obtained, so that the marine seismic data can be used for marine seismic analysis, and the accuracy of marine seismic situation analysis is improved.

The present application relates to the technical field of seismic exploration data processing, and particularly relates to a method for identifying abnormal shot deviation results from massive shot domain seismic imaging data. The method mainly solves the problem that the existing seismic imaging data processing method cannot accurately identify single shot data with abnormal amplitude interference in massive data. The method comprises the following steps: performing seismic imaging processing on common shot point gathers by a computing node; performing stacking processing on common shot point imaging data; performing stacking processing on the computing nodes with abnormal amplitude deviation results step by step, identifying the common shot point gather numbers with abnormal amplitude deviation results; and re-performing migration processing on the identified common shot point gather number data with abnormal interference. The method can efficiently identify and eliminate single shot data with abnormal amplitude interference in shot domain imaging results, and can accurately lock single shot data with abnormal migration of CPU or GPU high-performance computing nodes, thereby ensuring the accuracy and quality of the imaging results.

This application discloses a method, apparatus, and computer equipment for establishing a near-surface velocity model, belonging to the field of geophysical exploration technology. The method includes: determining the time delay and refraction velocity corresponding to multiple shot points and multiple receiver distances based on multiple first arrival times and multiple shot-receiver distances; determining the regolith thickness and regolith velocity corresponding to the multiple shot points based on the time delay and refraction velocity; determining the regolith thickness and regolith velocity corresponding to the multiple receiver points based on the time delay and refraction velocity; determining a constraint model based on the refraction velocity, regolith thickness, and regolith velocity corresponding to the multiple shot points and multiple receiver points; and performing tomographic inversion on the constraint model to obtain the near-surface velocity model. By utilizing various information corresponding to the multiple shot points and multiple receiver points, and combining the refraction wave method and travel-time tomography, the accuracy of the near-surface velocity model is improved.

This invention discloses a method for detecting seismic multiples. The method includes: picking up reflecting interfaces; setting a formation velocity between every two adjacent reflecting interfaces; setting a shot point sequence and a receiver sequence at each reflecting interface; setting a source function; establishing a propagation operator sequentially for each shot point in the shot point sequence based on the formation velocity; determining the up-going and down-going wave fields generated at each reflecting interface based on the propagation operators; establishing propagation extrapolations for down-going and up-going secondary sources for each reflecting interface based on the up-going and down-going wave fields; and summing the wave fields detected at the receiver sequence by combining the propagation extrapolations of the down-going and up-going secondary sources to obtain the detection result of seismic multiples. This method can improve the detection accuracy and precision of multiples.

The utility model relates to the technical field of floor thickness control, and discloses a pouring plate thickness monitoring device which comprises a hanging ring, a connecting piece, a stand column and a fixed base. The stand column is arranged on the side, away from the fixed base, of the connecting piece, the hanging ring is connected with the connecting piece, and plate thickness marks are arranged on the connecting piece. The fixing base is detachably connected with the connecting piece, the fixing base is used for fixing the connecting piece, the floor slab is directly placed on a formwork through the fixing base, then the thickness of a cement layer of the floor slab is calibrated through connection of the connecting piece and the fixing base, and then passing is carried out. The technical problems that in the prior art, shot points damage the formwork and influence the working efficiency are solved, and the technical effects that the formwork is not prone to being damaged, and the working efficiency is high are achieved.

The application provides a kind of generation method of theoretical observation system of data collection interpolation, comprising: importing seismic data into actual acquisition zigzag observation system;Actual shot point position is regularly arranged in the shape of "zigzag";A set of theoretical shot point positions corresponding to the actual shot point positions are designed, and the theoretical shot point positions are arranged in the shape of "anti-zigzag" with the actual shot points;Split the theoretical shot points, and design multiple theoretical observation systems according to the parameters of the actual zigzag observation system;Integrate multiple theoretical observation systems to generate a complete theoretical observation system;Display the complete theoretical observation system together with the actual zigzag observation system to obtain accurate results. The correspondence between the target survey line position of the theoretical observation system and the actual data survey line position of the high-efficiency data collection is clear, the data generated by interpolation is more real and reliable, and the signal-to-noise ratio and continuity of the stratum are improved.

This application relates to a method for determining the offset of shot points in a wind-eroded hill area and a shot point offset method. The determination method includes: acquiring initial DEM data and work area information based on LiDAR, and extracting elevation values ​​from the initial data; calculating roughness and undulation based on the elevation values, and calculating the optimal topographic statistical grid using the mean variable point statistical method for undulation; extracting negative topographic grid data based on the optimal topographic statistical grid, and determining the negative topographic area for shot point placement; calculating the construction difficulty based on the elevation values, roughness, undulation, and construction difficulty; determining the shot points to be offset based on the elevation values, roughness, undulation, and construction difficulty; searching for offsettable positions of the shot points within the work area, and selecting the position with the smallest distance from the shot point as the offset position of the shot point. The offset method includes: determining the offset position of the shot points within the wind-eroded hill work area according to the shot point offset determination method, and performing topographic offset of the shot points according to the corresponding offset positions.

This application provides a seismic data imaging processing method and apparatus, relating to the technical field of seismic data processing. The method includes: using the horizontal plane where the shot point is located as the reference plane, performing shot point reference plane correction on the first P-wave stacking velocity, first P-wave stacking profile, first converted wave stacking velocity, first KPa, and first converted wave stacking profile under the dual reference planes, to obtain the second P-wave stacking velocity, second P-wave stacking profile, second converted wave stacking velocity, second KPa, and second converted wave stacking profile under the shot point reference plane. This can accurately reflect the true positions of the receiver point and the shot point, thereby improving the accuracy of the converted wave pre-stack time migration imaging results.

This invention relates to a method for controlling supplementary shots in 3D seismic acquisition, belonging to the field of 3D seismic exploration technology. The invention first calculates the shot density based on the design requirements of the work area observation system; then, based on the shallowest target layer depth requirement, using the shallowest target layer depth as the maximum statistical circle radius, it calculates the theoretical number of shot points within the statistical circle based on the shot density; next, it identifies shot points that failed to detonate, determines the influence range of these shot points with their location as the center and the shallowest target layer depth as the radius, and counts the effective shot points within this range; finally, it calculates the shot density distribution ratio of the failed shot points based on the theoretical and effective shot point counts, and determines whether supplementary shots are needed based on this ratio. This invention, by calculating the shot density distribution ratio of failed shot points to determine whether supplementary shots are needed, can improve the construction process and reduce construction costs while ensuring that shallow data meets requirements.