78 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 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.

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.

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 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 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 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.

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.

The invention relates to the technical field of ground pressure early warning, and discloses a mine broadband earthquake impact ground pressure early warning method and device, and the method comprises the steps: arranging shot points and a three-component detector on the same side wall of a roadway, exciting slot waves, collecting signals, extracting reflected waves through time-frequency, band-pass and median filtering, and positioning a broken structural surface; for a target area, collecting a microseismic original waveform, automatically scanning a potential event, picking up P / S wave arrival time, and inverting a wave velocity model to calibrate a seismic source position; dispersing the broken structural surface into grids, counting the number of micro-seismic events in a set time-space, and calculating a dynamic fracture probability; and constructing a gray model in combination with the stress sequence of the anchor rod strain gauge, generating a cumulative reduction stress prediction value, and constructing risk early warning classification through the stress prediction value, the crushing dynamic probability and the crushing frequency. According to the method, the stress spatio-temporal evolution law is captured through the gray scale prediction model, the migration path of the stress concentration area is speculated, and real-time early warning can be carried out on the roadway stress change.

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 invention discloses a time interval intelligent control method and device based on a well gun T-D excitation mode. The method comprises the steps of drawing up a work area T-D rule function curve based on historical seismic wave energy; in response to an excitation request sent by a blaster, obtaining a theoretical interval time between a to-be-excited shot point and each previous excited shot point based on the work area T-D rule function curve; obtaining the actual excitation time of each shot point excited in the preorder, and obtaining the actual interval time between the shot point to be excited and each shot point excited in the preorder based on the actual excitation time; acquiring a time difference set based on the theoretical interval time and the actual interval time, acquiring a specific excitation moment of the to-be-excited shot point based on the time difference set, and intelligently controlling the excitation time interval through the horizontal distance between the previous shot point and the excitation shot point, so as to achieve the full utilization of the acquisition time, and improve the accuracy of the excitation time of the to-be-excited shot point. The project construction cost is reduced.

The present disclosure relates to a method, device, equipment and medium for displaying common-receiver-point gather seismic data, the method comprising: receiving setting information of seismic trace display parameters of an observation system; constructing a regular grid for representing the positional relationship of each shot point according to the setting information; calculating the theoretical coordinates of each shot point corresponding to the regular grid in the form of equidistant distribution; determining the first shot point without correction, the second shot point requiring correction and the corresponding offset distance correction information according to the theoretical coordinates, actual coordinates of each shot point and the actual coordinates of the receiver; performing correction processing on the target seismic trace data corresponding to the second shot point according to the offset distance correction information and the setting information; and displaying the seismic trace gather data in the observation system, the seismic trace gather data containing the seismic trace data of the first shot point and the corrected seismic trace data of the second shot point. The result of the display after correction facilitates subsequent data analysis.

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 application discloses a method and device for establishing a near-surface velocity model, and belongs to the technical field of geophysical exploration. The method comprises the following steps: acquiring the positions of a plurality of shot points, the positions of a plurality of geophones, and the actual first arrival time corresponding to each shot-geophone pair; obtaining the isotropic near-surface velocity corresponding to each detection area based on the positions of the shot points, the positions of the geophones, the actual first arrival time corresponding to each shot-geophone pair and an initial near-surface velocity model; determining the predicted first arrival time corresponding to each shot-geophone pair based on the isotropic near-surface velocity; and determining the near-surface velocity corresponding to different directions in each detection area based on the isotropic near-surface velocity corresponding to each detection area, the predicted first arrival time corresponding to each shot-geophone pair and the actual first arrival time. The near-surface velocity determined by the method takes the speed difference of seismic waves propagating in the crust along different directions into account, and can more truly and accurately determine the near-surface velocity of seismic waves.