100 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.

The invention discloses a shot point arrangement method. The method comprises the following steps: acquiring a work area in which shot points are to be arranged and theoretical shot points in the work area; creating a first grid in the work area according to a preset size to obtain a plurality of grid points; screening out a first grid point which can be used as a candidate shot point according to the gradient of each grid point and the position of each grid point in the work area; constructing a second grid by taking each theoretical shot point as a center; and one first grid point is selected from each second grid to serve as a target shot point. The invention further discloses a system, computer equipment and a readable storage medium. According to the scheme provided by the invention, the difficulty of field construction of shot points is reduced while obstacles in a work area can be avoided, gridding uniform distribution of the shot points in the work area is realized, uniformity of surface element attributes of an observation system is ensured, and the quality of three-dimensional seismic acquisition data can be improved.

The invention provides a seismic velocity model acquisition method and device, electronic equipment and a storage medium, and relates to the technical field of seismic data processing. The method comprises the steps of obtaining a spatial position, a shot point coordinate, an initial velocity model and an initial imaging result, and inputting the spatial position, the shot point coordinate, the initial velocity model and the initial imaging result into a trained velocity model neural network to obtain a target velocity model. According to the method, the space structure information in the imaging result can be extracted by using the trained speed model neural network, and the tomography speed model is obtained according to the space structure information, so that the obtained speed model is higher in resolution and more accurate in structure.

The present invention discloses an excitation method for efficient seismic data acquisition based on time and distance intervals. The method comprises the following steps: constructing a first boundary surface model for zero attenuation of the surface wave aftershocks of the preceding shot based on the records of the shot detection points and the minimum time interval at which the shot point near-track background decays to random noise; calculating the distance between the preceding and succeeding shots using a formula for catching up with the surface wave of the preceding shot based on the length of the detector point arrangement; and constructing a second boundary surface model for catching up with the surface wave of the preceding shot based on the linear relationship between the distance between the preceding and succeeding shots and the time interval between the preceding and succeeding shots; using the overlapping area of the two boundary surface models as the non-interference excitation area of the shot point, the non-interference excitation area encompassing the corresponding non-interference time-distance intervals of all preceding and succeeding shots; and performing shot excitation and acquiring seismic data. The present invention not only overcomes the interference of the preceding shot aftershocks on the succeeding shot, but also eliminates quality risks and can improve blasting efficiency by 20-40%.

The invention provides a crack prediction method and device based on seismic data, and the method comprises the steps: dividing the seismic data into a plurality of fan-shaped regions according to a shot point and a detector azimuth angle, and determining an azimuth domain common imaging gather of a converted wave in each fan-shaped region; carrying out fast and slow shear wave separation on the orientation domain common imaging gather, and determining a fast shear wave gather, a slow shear wave gather and an included angle between the crack trend in each stratum crack and the main measuring line direction of the detector; according to the fast transverse wave gather and the slow transverse wave gather, the development direction of the crack of the target stratum is determined; converting the azimuth domain common imaging gathers corresponding to the fast transverse waves and the slow transverse waves into snail gathers according to the azimuth and offset of the fan-shaped region, and correcting the time difference of each gather in the snail gathers; and determining the density of the crack based on the time difference, and determining the development index of the crack according to the density.

The present application discloses a method, device, electronic device and medium for determining shot point spacing and geophone point spacing. The method may include: determining the geophone point rows and columns and the shot point rows and columns; respectively extracting data from the geophone point rows and columns and the shot point rows and columns, and establishing multiple groups of geophone point data volumes and shot point data volumes according to different shot point spacings and geophone point spacings; calculating the signal-to-noise ratio of each group of geophone point data volumes and shot point data volumes; and comparing to determine the optimal shot point spacing and geophone point spacing. The present invention can scientifically design a three-dimensional seismic acquisition observation system, make the observation system more conducive to the application of subsequent three-dimensional cone denoising technology in the cross-line arrangement domain, and achieve the balance between economy and technology.

This application discloses a method, apparatus, electronic device, and readable storage medium for detecting the performance of a geophone, relating to the field of seismic exploration data acquisition technology. The method includes: acquiring shot gather data based on shot point data acquired by geophones at all geophone points; acquiring gather data for each geophone point from the shot gather data; the gather data is a collection of all shot point data acquired by the geophones at each geophone point; acquiring a frequency amplitude set corresponding to each geophone point based on each gather data; the frequency amplitude set includes the frequency and amplitude of all vibration waves acquired by the geophones at each geophone point within a preset time period; each shot point corresponds to one vibration wave; and acquiring the performance detection result of the geophone at each geophone point based on each frequency amplitude set, thereby achieving the evaluation of geophone performance. This eliminates the need for manual analysis of seismic exploration data, improving work efficiency and solving the problem of low work efficiency in prior art.

The invention provides a chromatography static correction method and system for a fixed stripping surface. The correction method comprises the following steps: S1, sequencing shot point sets based on earth surface consistency; s2, shot gather first arrival waveform preprocessing; s3, processing the abnormal time offset data pair in the coordinate system; s4, carrying out artillery first arrival chromatography velocity inversion; s5, single-port micro-logging chromatography velocity inversion is carried out, and a three-dimensional micro-logging velocity model is obtained; s6, performing chromatography velocity inversion constrained by the micro-logging model; s7, a shallow well constraint near-surface velocity model is established; s8, expanding the model and selecting a fixed stripping surface; and S9, calculating and applying a correction value. According to the method, all reliable information in the exploration area is fully utilized, the model close to the real earth surface condition is obtained to the maximum extent, and the more accurate static correction value is obtained through calculation.

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.

The invention provides an irregular three-dimensional seismic observation method for an undulating surface, and the method comprises the steps: 1, collecting the density of shot points and detection points according to a rule, determining the density of actual shot points and detection points, collecting the distance between the shot points and the detection points according to the rule, and determining the distance between the actual shot points and the detection points; 2, according to the surface elevation, intervisibility conditions and rules, collecting the distance between shot points and detection points, and determining a plurality of equal-height surfaces; step 3, according to the density and spacing of the actual shot points and the detection points, arranging the detection points along each equal-height surface, and arranging the shot points along a regular acquisition shot detection line or each equal-height surface; and step 4, simulation of the number of surface element coverage times is carried out based on the arranged shot points and detection points, and three-dimensional seismological observation is completed. According to the method, irregular acquisition is carried out based on the contour surface, and the problem of inter-track time difference caused by elevation difference is solved, so that the problem of static correction of undulating surface and complex near-surface structure regions is effectively solved.

The invention relates to a vibroseis adjacent shot interference suppression method and device, equipment and a storage medium, and the method comprises the steps: obtaining the excitation point coordinates, the maximum offset, the recording time length and the collection time of each target single shot record of a designated measuring line; based on the excitation point coordinates, the maximum offset distance, the recording duration and the collection time recorded by the target single shot, screening a target adjacent shot which causes interference to the shot; determining a noise suppression area according to the acquisition time difference of the current shot and the target adjacent shot and the first arrival wave speed of the target adjacent shot; according to the method, the excitation point coordinates of the target adjacent shot are used for replacing the excitation point coordinates of the target adjacent shot, the relation between the excitation point and the receiving point of the noise suppression area is defined, the noise suppression area is suppressed, the denoised area is obtained, and the denoised target single shot record is generated, so that adjacent shot interference waves can be effectively suppressed in different areas, and the suppression effect is relatively good; and effective reflected wave information cannot be damaged.

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 present invention discloses a game shooting assistance control method, device, and computer-readable storage medium, wherein the method comprises: adjusting the moving reference contact within a moving control area to obtain multiple virtual moving contacts surrounding the moving reference contact, and determining multiple virtual shooting points corresponding to the multiple virtual moving contacts within an aiming area of ​​the game interface; generating multiple virtual touch signals corresponding to the multiple virtual shooting points within the shooting area; identifying touch signals indicating successful shooting from the real touch signals and / or the virtual touch signals based on a game feedback signal of a device, and generating and responding to multiple identical touch signals within a second preset time. A user-friendly game shooting assistance control solution is implemented, which solves the problem of high operational control difficulty in shooting games using touch screens as an operating platform and enhances the user's shooting game experience on touch screen devices.

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 invention relates to a method for determining a shot-geophone relationship, and belongs to the technical field of seismic exploration data processing. The method comprises the following steps: dividing detection point data recorded by a seismic single shot into positive offset detection point data and negative offset detection point data according to a relative offset principle, and respectively carrying out linear dynamic correction and common shot point superposition on the positive offset detection point data and the negative offset detection point data; and detecting the shot-geophone relationship by using a cross-correlation result and a similarity coefficient of the two kinds of superposition data. According to the method, positive and negative offset distances are utilized to construct positive and negative two groups of superposed data, so that the influence that the single-shot linear dynamic correction first arrival cannot be leveled when the speeds of the two sides of a shot point are inconsistent is avoided; and meanwhile, data cross-correlation and similarity coefficients are utilized, a qualitative judgment problem is solved by mathematical quantitative parameters, efficient and accurate automatic detection of the shot-geophone relationship is realized, and reliable acquisition data is provided for seismic exploration.

The invention provides a node instrument-based seismological observation system determination method and apparatus. The node instrument-based seismological observation system determination method comprises the steps of converting pre-acquired original shot point data into transition shot point data according to a preset first data format; wherein the first data format at least comprises a shot point station number; converting pre-acquired original detection point data into transition detection point data according to a preset second data format; the second data format at least comprises a detection point station number; and determining the seismological observation system according to the original shot point data, the original detection point data, the transition shot point data and the transition detection point data. According to the method, the seismic data observation system can be quickly determined and the quality control and processing of the acquired data can be carried out in real time under the condition that the node instrument acquired data has no relation file, so that the quality of the acquired data is ensured and the processing efficiency is accelerated.

The invention relates to a method and device for determining the layout position of a shot point, a storage medium and electronic equipment, and the method for determining the layout position of the shot point comprises the steps: carrying out the grid division of a surface topographic map corresponding to a target exploration work area according to a preset first grid division strategy, the first grid division strategy comprises the steps that in laid grids obtained through grid division, at most one shot point is laid on each laid grid; dividing each distributed grid into a plurality of pixel grids according to a preset grid second division strategy; marking the pixel grid, acquiring a connected region in the laid grid based on the marked pixel grid, and calculating a connection parameter value of the connected region; and selecting a communication region of which the communication parameter value meets a preset parameter screening threshold value from each communication region, and determining the central point of the selected communication region to obtain the arrangement position of the shot point. The efficiency of determining the arrangement positions of the shot points can be improved.

The application discloses a kind of based on azimuth strip's abnormal first arrival elimination method and device, including to all shot points according to geographical location is automatically divided into area, obtains multiple groups of shot points;All shot points are automatically divided according to 360° azimuth angle and obtain 360 rectangular strip areas;To the shot point data corresponding to each group, automatically extract the data on the receiving point of each shot point same azimuth angle in the rectangular strip area range, obtain multiple group data sets;Draw multiple group first arrival time-offset distance intersection diagram through the multiple group set data obtained;Through the multiple group first arrival time-offset distance intersection diagram drawn, automatically identify abnormal first arrival and eliminate abnormal data.The application is automatically divided into area through shot point, automatically divided into azimuth strip and the like means, excludes the case that first arrival time does not increase with offset distance in different directions possibly caused by the case that lateral velocity changes greatly, to improve the quality and efficiency of seismic wave first arrival picking.

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 present application belongs to the technical field of oil and gas seismic exploration, and particularly relates to a three-dimensional seismic exploration profile gap prediction method. Firstly, each single-shot record is obtained by forward modeling, and each single-shot record is rearranged by CDP gather. After rearrangement, dynamic correction and dynamic correction cutting operation are performed. Then, a single-shot data cone surface with a shot point as a vertex is generated by using the seismic record after dynamic correction cutting. Then, a multi-shot data cone surface is generated by using each single-shot data cone surface. The multi-shot data cone surface is the intersection of the outer envelope surface of the maximum reflection angle seismic record of each stratum in the shot-receiver pair of the CDP bin. Finally, the size of the seismic profile gap in the forbidden shot area is determined according to the slice of the multi-shot data cone surface. Through the slice of the multi-shot data cone surface, the size of the seismic profile gap can be directly understood. This method does not require complex calculation, and compared with the method in the prior art, the calculation efficiency is obviously improved on the basis of ensuring the prediction accuracy.

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 invention discloses a method for locating shot points based on three-dimensional scanning, belonging to the field of shot point location methods, and comprising the following steps: setting two calibration points on a projector, and calculating the projection center point of the projector and the calibration parameters of the horizontal angle and vertical angle through the calibration points; collecting the point cloud data of the blasting section based on the engineering coordinate system of the target construction tunnel through a three-dimensional scanning device, and generating a three-dimensional blasting section according to the point cloud data of the blasting section; erecting the projector in the target construction tunnel, measuring the two calibration points of the projector through a total station, obtaining the coordinates of the projector center in the current engineering coordinate system, and the horizontal angle and vertical angle of the projector center line; obtaining the layout position map of the blast holes of the theoretical section according to the blasting design drawing, and extracting the offset and elevation difference of each position relative to the design line in the current section. The present invention has a simple method for correcting the position of the shot point, does not require a large amount of manpower and material resources, and is convenient to use.

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 present invention relates to a method, system, device and storage medium for picking up refracted wave velocity, which obtains a single-shot record of seismic exploration, sets the time and velocity scanning intervals and scanning intervals based on the recording track time at the shot point. A time-channel two-dimensional window is introduced to perform a time and velocity nested loop; a time-channel two-dimensional window correlation analysis technology is proposed to perform a time-channel two-dimensional window correlation analysis on each group of scanning time and scanning speed to obtain the corresponding optimized superposition amplitude. Then, the velocity spectrum is calculated and plotted, and the maximum value of the velocity spectrum is read in combination with the single-shot record of the seismic wave. The scanning speed corresponding to the maximum value is the refracted wave velocity of the corresponding refracted wave. The method uses the optimized superposition amplitude calculated by the window correlation analysis technology to determine the refracted wave velocity, and has the characteristics of high analysis accuracy and strong anti-interference ability. Not only can the initial refracted wave velocity be picked up, but also the subsequent refracted wave velocity can be extracted, which strongly supports the application of the refracted wave method in seismic exploration.

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 application provides a method and device for determining residual static correction, equipment and storage medium. The method comprises the following steps: calculating, by a computing node of a parallel processing system, a shot point static correction amount RDD of each shot point and a geophone static correction amount RDD of each geophone; sending the shot point static correction amount RDD of each shot point and the geophone static correction amount RDD of each geophone to a master node; and determining, by the master node, a target shot point static correction amount and a target geophone static correction amount.