13 results about "Seismic line" patented technology

The invention provides a CO2 migration and storage state monitoring method, system, medium and equipment, and belongs to the field of geophysics comprehensive application. The method comprises the following steps: firstly, respectively calibrating a target interval of CO2 sequestration through different observation systems, and analyzing a difference change range caused before and after CO2 injection through annular VSPs in different directions to obtain a migration boundary of a gas injection well; secondly, processing the ground two-dimensional seismic survey lines before and after CO2 injection by adopting the same processing parameters; and finally, performing qualitative analysis on the states before and after CO2 storage by adopting frequency attribute analysis and impedance inversion results, thereby realizing CO2 migration and storage state monitoring. According to the method, a CO2 monitoring closed loop is formed from collection to processing to explanation by adopting a geophysical monitoring means, and fluid migration and storage states before and after gas injection can be effectively compared by collecting changes of related attributes after reservoir fluid changes.

The application discloses a kind of seismic data imaging method, device, equipment, medium and product, the method includes: for each main survey line included in the seismic data volume to be migrated, according to the information of work area and all shot-receiver information contained by main survey line, the shot-receiver coverage range corresponding to main survey line is determined and relationship reference table is established;Iterate the cyclic imaging target in imaging task, determine the input seismic line information according to its target main survey line number, migration parameter and relationship reference table;Iterate all input seismic line numbers in input seismic line number range, determine the imaging sub-result of input seismic line number according to travel time table file, input shot-receiver coverage range set and preset Kirchhoff prestack depth migration algorithm;Until the preset end condition is met, the final imaging result is determined.Travel time data is segmented by main survey line number, and travel time data is read into memory in line by line cycle, which greatly reduces the memory occupation of travel time, saves memory overhead.

The present invention belongs to the field of seismic engineering drawing, and discloses a method for batch generating result data drawing library files. First, the field acquisition parameter list and processing parameter list are extracted from the field report file and the seismic line CMP coordinate - elevation file, and saved in the LTP and LSL library files, and the standard templates of the LTP and LSL library files are established; the field report files and seismic line CMP coordinate - elevation files of each seismic line are collected and named in a unified format; the information extracted from the seismic line CMP coordinate - elevation file and the field report file is synthesized to obtain the total drawing parameter information table, and the total drawing parameter information table is batch written into the standard drawing library files according to the established standard templates of the LTP and LSL library files. The present invention is applicable to batch generating result data drawing library files. By batch writing the total drawing parameter information table into the standard drawing library files according to the established standard templates of the LTP and LSL library files, the production efficiency is improved and the workload of processing personnel is reduced.

The invention discloses a method and device for calculating a full-crustal extension coefficient based on subcrustal flow and magma invasion recovery, and the method comprises the steps: obtaining geological comprehensive data, such as a seabed seismic survey line and deep reflection multichannel seismic section data, of a target region, carrying out the stratigraphic division according to the geological comprehensive data, constructing a time-depth conversion formula through the drilling and logging data, and carrying out the calculation of the full-crustal extension coefficient. And converting the time profile data into depth domain data. And establishing an earth crust structure model in combination with a stratigraphic division result and related data, calculating a gravity anomaly curve through forward modeling and correcting the model until a preset condition is met so as to obtain density structure distribution of each part of the profile, and extracting the thickness of the earth crust high-density body. And then, according to the abnormal settlement after cracking, the earth crust loss amount is extracted, the current earth crust thickness is recalculated by removing the earth crust high-density body thickness and supplementing the earth crust loss thickness, the corrected earth crust thickness is obtained, and finally the whole earth crust extension coefficient is calculated. According to the method, the influence of bringing-in and taking-out of crustal substances is eliminated, and the accuracy of evaluating the crustal extension change rule is greatly improved.

The invention relates to a method for predicting the trend of a head-on coal seam of a high mechanical construction roadway, which comprises the following steps of: symmetrically arranging two seismic survey lines and a plurality of seismic detectors on a top plate and a bottom plate of a construction roadway of a cantilever heading machine and a digging and anchoring integrated machine to construct an observation system; a rock breaking vibration signal generated by tunneling of mechanical equipment is used as a detection seismic source, and multiple groups of reflected wave signals are acquired to obtain multi-source seismic wave field data; filtering, coherence stacking and ellipsoid focusing imaging processing are carried out on the data, and a reflection energy spectrum and reflection horizon information in front of the working face are extracted; projecting detection results to the same section and picking up reflection points through interactive iterative computation of multiple groups of achievements, and constructing a reflection point sample library; polynomial curve fitting is carried out, and the occurrence area of the coal seam in front of the working face is delineated and predicted by combining the head-on exposed coal seam thickness. According to the method, the self vibration of the construction machinery is used as a seismic source, additional excitation is not needed, and the trend of the head-on coal seam of the high mechanical construction roadway is efficiently and accurately predicted through multi-source data interference imaging and iterative optimization.

The invention relates to the field of structural profile map drawing, and discloses a geological structural profile map improvement system and method based on seismic interpretation data constraint, and the method comprises the steps: preparing a geological plane base map and a seismic structural interpretation map; analyzing the position relation between the structural section and the surrounding seismic survey lines; seismic data constraint information is extracted in a classified mode according to the intersection angle of the structural section and the seismic survey lines: for the small-angle oblique crossing or parallel seismic survey lines, the number, the property and the combination relation of faults are extracted; for a large-angle oblique crossing seismic survey line, extracting stratum depth data of an intersection point by generating a virtual well; and finally, correcting fault combination and stratigraphic distribution of the structural profile map in MapGIS software by utilizing the constraint information. According to the method, through differential utilization of the seismic data, deep seismic information and surface geological data are effectively fused, the prediction depth, the accuracy and the application range of the structure profile map are remarkably improved, and the method is particularly used for deep geological structure recognition and three-dimensional geological modeling.

The present application provides a method, device, electronic device and storage medium for predicting the distribution of effective source rocks. The method determines the relationship between the key parameters corresponding to the target well logging curve and the total organic carbon content, and then determines the time-depth relationship. Based on the time-depth relationship and two-dimensional seismic line data, a source rock formation framework model of the target area is constructed. The key parameters are inverted and calculated using the two-dimensional seismic line data and the source rock formation framework model to obtain the distribution characteristics of the key parameters in the source rock formation framework model. The distribution characteristics of the effective source rocks in the target area are determined using the relationship and the distribution characteristics. This method can predict the distribution of effective source rocks in the case of a lack of basic data (such as core data).

The application provides a pre-stack wide azimuth anisotropy inversion method, device, storage medium and equipment, the method comprises the following steps: obtaining original pre-stack wide azimuth gather; performing azimuth AVO feature correction processing on the original pre-stack wide azimuth gather to obtain target pre-stack wide azimuth gather; sequentially reading a set number of seismic line data from the target pre-stack azimuth gather data to form a current inversion array, and performing anisotropy inversion based on the current inversion array to obtain a corresponding inversion result, until all the seismic line data in the target pre-stack azimuth gather data are obtained. Through azimuth AVO feature correction processing on the original data, the quality of the gather data is effectively improved, the problems of low pre-stack azimuth data quality and large data quantity are solved, and the subsequent inversion requirements are better met; through rolling extraction of seismic data to form a specific inversion array for step-by-step inversion, the calculation efficiency and stability of the inversion are improved.

The utility model relates to the technical field of wire harness distinguishers, and discloses a multi-channel earthquake wire harness distinguisher, which solves the problems that a plurality of wire harnesses are easy to slip and fall off and the use effect of the multi-channel earthquake wire harness distinguisher is poor because the existing multi-channel earthquake wire harness distinguisher cannot be used for synchronously and well fixing the multi-channel wire harnesses, and comprises a distinguisher main body, a plurality of placing grooves are formed in the distinguishing device main body, a moving disc is arranged above the distinguishing device main body, wire holes corresponding to the placing grooves in number are formed in the surface of the moving disc, a plurality of wire harness bodies are mounted in the placing grooves, and the moving disc sleeves the surfaces of the plurality of wire harness bodies through the plurality of placing grooves; two extrusion nozzles are symmetrically and fixedly mounted on the lower side of the movable disc and located at the lower parts of the plurality of wire holes; the extrusion nozzles are made of a rubber material with certain hardness; according to the multi-channel seismic wire harness discriminator, a plurality of wire harnesses cannot be synchronously and well fixed, the plurality of wire harnesses are prevented from slipping and falling off, and the multi-channel seismic wire harness discriminator has a very good use effect.

The invention provides a buckling-restrained brace with an SMA self-resetting damper-friction energy dissipation device, and relates to the technical field of structural anti-seismic equipment, the buckling-restrained brace comprises a steel pipe outer sleeve, an SMA self-resetting damper, a friction energy dissipation mechanism and a friction hinge, the SMA self-resetting damper comprises a shape memory alloy energy dissipation rod, and the shape memory alloy energy dissipation rod is connected with the SMA self-resetting damper. A disc spring set composed of a plurality of disc springs is arranged on the shape memory alloy energy dissipation rod, the shape memory alloy energy dissipation rod is movably connected into the circular sleeve, the friction energy dissipation mechanism comprises a cross-shaped connecting plate, the bottom of the cross-shaped connecting plate is connected with a lower lug plate, and the cross-shaped connecting plate is connected with an L-shaped connecting plate through a high-strength bolt group. A friction energy dissipation mechanism and an SMA self-resetting damper are arranged in the steel pipe outer sleeve. The buckling-restrained brace is connected with a main body component through a friction hinge. The anti-seismic structure has the beneficial effects that the structure can be reset through the SMA self-resetting damper after an earthquake, earthquake energy is dissipated through the damper and the friction mechanism, multiple anti-seismic defense lines are formed, and damage to the main body structure is reduced.

The present application relates to a kind of for high mechanical construction roadway head coal seam strike prediction method, by cantilever excavator, excavator anchor integrated machine construction roadway roof and floor symmetrical layout 2 seismic lines and multiple seismic detectors, construct observation system;With the rock breaking vibration signal generated by mechanical equipment excavation as detection source, collect multiple sets of reflection wave signal to obtain multi-source seismic wave field data;Data are filtered, coherent superposition and ellipsoid focusing imaging processing, extract the reflection energy spectrum and reflection horizon information in front of working face;Through the interactive iterative calculation of multiple sets of results, the detection result is projected to the same profile and the reflection point is picked up, and a reflection point sample library is constructed;Polynomial curve fitting is carried out, and the coal seam occurrence area in front of the working face is circled and predicted in combination with the head exposed coal seam thickness. Use the vibration of construction machinery itself as the source, without additional excitation, through multi-source data interference imaging and iterative optimization, high efficiency, accurately predict the high mechanical construction roadway head coal seam strike.

The invention discloses a reservoir prediction method and system based on multi-source information fusion, and relates to the technical field of reservoir prediction. The method comprises the following steps: performing high-fidelity weak-keeping signal processing on seismic data in combination with seismic geological conditions of a target area; fine well-seismic calibration is carried out by utilizing information such as logging, earthquake and geology and combining domain knowledge; carrying out seismic facies identification by adopting a deep embedded self-organizing mapping network; performing multi-scale breaking joint detection by using the cepstrum analysis enhanced coherent ant body attributes; carrying out wave impedance and porosity inversion by adopting seismic waveform indication inversion; data-driven seismic line analysis, depth domain frequency dispersion analysis and seismic data deep learning are combined to carry out reservoir gas-bearing property detection; and predicting favorable reservoir distribution through results of adaptive weighted fusion seismic facies identification, breaking joint detection, wave impedance and porosity inversion and gas-bearing property detection. The method has the advantage that accurate and reliable prediction of the deep complex oil and gas reservoir can be realized by integrating multi-source, multi-dimensional and multi-attribute data.

This invention provides a method for handling jump points in seismic horizon interpretation, comprising: Step 1, inputting seismic horizon interpretation data for any seismic line, detecting faults and segmenting the data to generate each cluster of seismic horizon interpretation data; Step 2, for each cluster of segmented seismic horizon interpretation data obtained in Step 1, detecting interpretation jump points; Step 3, for any jump point detected in Step 2, establishing a multinomial regression model using the data points after removing the jump point, and recalculating the value at the jump point using this model to replace the original jump point value; Step 4, visualizing the corrected horizon data obtained in Steps 2 and 3 with the original data in the form of a line graph, and comparing and evaluating the satisfaction with the jump point handling effect. This method for handling jump points in seismic horizon interpretation solves the problems of detecting, removing, and reassigning outliers in seismic horizon interpretation data, improves the quality of seismic interpretation data, and thus improves the accuracy of geological mapping.