56 results about "Geological section" patented technology

The invention belongs to the field of geotechnical engineering and engineering geological information modeling, and relates to a stratum-parameter coupling randomness three-dimensional random field modeling and shield construction ground surface settlement rapid prediction method and device based on multi-source data fusion. According to the method, a three-dimensional joint random field acting on stratum types and rock-soil key physical property parameters at the same time can be constructed under the joint constraint of multi-source data such as drilling, geophysical prospecting, geotechnical tests and terrains, and a calibrated, explainable and updatable geological section automatic generation and uncertainty quantification channel is formed; on the premise that geological rationality is guaranteed, section geometry and parameter distribution under the conditions of complex structures and lateral phase change are restored robustly, the accuracy, consistency and interpretability of the three-dimensional geological section are remarkably improved, and a combined uncertainty result which can be directly used for rapid prediction and risk assessment of shield construction settlement is output. The technical problems that a geological section generated by an existing method is not accurate enough, uncertainty is difficult to quantify, and the extrapolation capacity of a complex scene is weak are solved.

The invention relates to the technical field of geological modeling, and discloses an underground reservoir three-dimensional geological model construction method and system. The method comprises the following steps: screening drilling data through a preset precision threshold value, correcting topographic data by using a first precision drilling data set to generate a topographic surface model, reversely calibrating a second precision drilling hole, and establishing a multivariate data fusion mechanism; layering standardization is achieved in combination with sedimentary cycle characteristics, aquifer units are automatically divided, and stratum lithology codes are compiled; a three-dimensional model is generated by adopting an implicit modeling method based on modeling boundary constraints, and the model precision is verified through a profile comparison method and a leave-one-out method; and converting the adjusted geological section into a three-dimensional constraint surface to drive the generation of a virtual drill hole so as to realize incremental updating of the three-dimensional geological model. According to the method, the spatial precision of the terrain surface model is remarkably improved, the problem of non-uniform reference of multivariate heterogeneous data is solved, the reliability and accuracy of model construction are improved, the virtual drilling data set is generated, the data are dynamically modeled, and the dynamic updating of the model is realized.

The invention discloses an autonomous rock-soil body drilling instrument based on the bionic principle and a drilling method thereof.The autonomous rock-soil body drilling instrument comprises a drill bit, a propelling steering mechanism, an anchoring mechanism, an electric control integrated module and a ground control unit, and the drill bit, the propelling steering mechanism and the electric control integrated module are sequentially connected; anchoring mechanisms are arranged between the drill bit and the propelling steering mechanism and between the propelling steering mechanism and the electric control integrated module; the drill bit is used for cutting a rock-soil body and backwards conveying and discharging the cut rock-soil body to the outside of the drill bit; the propulsion steering mechanism is used for driving the drilling instrument to linearly advance and steer; the anchoring mechanism is used for providing counterforce required by drilling or resetting for the drilling instrument through meshing and separation with surrounding rock and soil bodies; and the electric control integrated module is connected with the ground control unit through an integrated communication cable. The device simulates an anchoring-propelling mechanism of natural organisms, realizes autonomous drilling without an external counter-force device, a slurry protection wall and a probe rod, and has the capabilities of multi-directional drilling, active obstacle avoidance and real-time acquisition of a continuous geological section.

A high-iron karst geological section comprehensive parameter fine automatic exploration system, including walking wheels, drill bit electrodes, drill bit detectors, drill bit magnetic excitation systems, electrode rotation systems, detector rotation systems, magnetic excitation rotation systems, liquid injection systems, control systems, multi-parameter interpretation systems, power systems, and wireless communication systems; the present application is based on the resistivity method and the wave velocity method, and can be used to explore any depth stratum that can be reached, independent of each other and mutually corroborating to reduce the karst geological multiple solutions, Rayleigh waves and electrical signals can transmit the most suitable signal type and strength according to the geological conditions at the set depth, which can realize the fine and automatic exploration of karst geology and improve the exploration efficiency. The present application also corrects the geological classification method in karst areas, and the corrected method can fully consider the development and particularity of karst, providing a method for the automation of high-iron geological exploration in karst areas and avoiding human errors.

This utility model belongs to the field of auxiliary supports, specifically relating to a portable geological profile measurement auxiliary support. It includes a hollow cylinder with multiple legs hinged to its outer wall. A mounting sleeve is fixedly connected to the top of the hollow cylinder, and a post is inserted into the upper end of the mounting sleeve. A mounting plate is fixedly connected to the top of the post. An inner conical sleeve is threadedly connected to the outside of the mounting sleeve, and a locking mechanism is provided between the inner conical sleeve and the mounting sleeve. This utility model, by setting an external support leg in the hollow cylinder, with the leg hinged to the outer wall of the hollow cylinder, can quickly unfold to form a triangular support structure, adapting to rugged terrain. Simultaneously, a lifting combination of a threaded shaft and a threaded sleeve is set inside the hollow cylinder. The threaded movement of these two components controls the lifting of the base plate at the bottom of the threaded sleeve. Combined with rollers at the bottom of the base plate, it facilitates carrying and transferring on flat surfaces, making it more convenient than traditional manual transport methods.

The application discloses a kind of quantitative description fault inversion process method based on balanced section, comprising the following steps: S1: selecting geological profile;S2: division different inversion stage sequence stratigraphy;S3: determine the geologic time of different activity stages of inversion fault;S4: use balanced section technology to restore the evolution history of inversion fault;S5-S7: calculate the slip distance of different stages inversion fault, and calculate the slip rate, inversion intensity coefficient of different inversion stages;S8: establish equivalent point distance, total slip distance, slip rate and inversion intensity coefficient trend chart with geologic time variation, the application is suitable for basin structural analysis technical field, introduce balanced section technology, can more accurately restore fault inversion process;Moreover, can clearly, accurately, quantitative characterization fault inversion process from fault slip distance, the activity intensity of different stages and inversion intensity etc., facilitate different inversion structure contrast, basin structural analysis etc. work is carried out.

The embodiment of the invention provides a complex stratum karst cave volume calculation method and related equipment, and belongs to the technical field of geological survey. The method comprises the following steps: acquiring a geological profile map and a borehole histogram; performing information extraction on the drilling histogram to obtain drilling information of each drilling point location; performing structured processing according to the drilling information of all the drilling points to obtain an original stratum distribution table; performing elevation supplementation on the original formation distribution table according to the geological profile map to obtain a standard formation distribution table; based on the standard stratum distribution table, performing data splitting by taking each stratum as a derivation unit to obtain a plurality of stratum derivation tables; performing three-dimensional model reconstruction according to each stratum derivation table to obtain a stratum interface entity model of each stratum; performing target detection on all the stratum interface entity models according to a preset karst cave label to obtain a target karst cave model; and performing area attribute analysis on the target karst cave model to obtain the target karst cave volume, thereby improving the accuracy of karst cave volume calculation.

The invention discloses a two-dimensional stratigraphic structure prediction method and system under the condition of limited borehole observation information, and the method comprises the steps: carrying out the spatial domain discretization of an engineering geological section of a target region, and obtaining a plurality of grid units; constructing state variables of each grid unit, wherein the state variables comprise feature vectors depicting soil engineering properties and labels representing stratum types; then feature prototypes of various stratums are established based on the drilling sample state variables; a stratum classification model containing a data consistency item and a spatial regularization item is constructed, the former quantifies the matching degree of a grid unit and a stratum type, and the latter realizes spatial continuity constraint by punishing stratum transition of adjacent units; and finally solving the model to obtain a two-dimensional stratigraphic structure prediction result. According to the method, the problems of space continuity and engineering reasonability of stratum prediction under the limited drilling condition are effectively solved, and the stability of a prediction result is improved.

The invention relates to the technical field of three-dimensional modeling, in particular to a VTK-based three-dimensional geological section model generation method, system and device and a medium. The method comprises the following steps: firstly, acquiring original drilling data, performing nested storage according to the position of the original drilling data on an exploration line, and performing cleaning and multi-dimensional sorting to obtain structured drilling data; extracting ore bed boundary points from the structured data, constructing a local adjacency graph, and calculating a comprehensive regularity score of each quadrilateral patch in the local adjacency graph based on regularity quantitative indexes; setting a threshold value, if the comprehensive regularity score is lower than the threshold value, adopting vtkQuad for modeling, otherwise, adopting vtkTriangle for modeling, and generating primitive data; performing topology check on the primitive data, storing the primitive data into vtkCell Array, converting polygonal primitives into triangular primitives, and smoothing the triangular primitives to generate a three-dimensional geological section model; performing visualization and rendering processing to obtain a final three-dimensional geological section model; according to the invention, accurate data visualization support is provided for geological analysis, and the intelligent and precise level of geological work is improved.

The invention discloses a borehole constrained geological profile generation method and system based on a diffusion generative model, and the method comprises the steps: obtaining original geological profile image data, and carrying out the preprocessing of the original geological profile image data; constructing a binary mask image on the original geological profile image and generating a shielding input image, and then constructing a sample training set; training a mask constraint diffusion generation model in the submerged space; and according to the geological section to be predicted and the new mask constraint diffusion generation model obtained by training, executing a back diffusion sampling process, and obtaining a complete geological section image meeting the drilling constraint. According to the method, the mask constraint diffusion generation model is trained in the submerged space, so that a complete geological profile map meeting the drilling constraint can be automatically generated according to given drilling columnar data in practical application, and a profile sample set is obtained through multiple times of sampling when needed and is used for constructing a lithologic probability profile map and evaluating the uncertainty of a geological structure.

The invention discloses a municipal pipe network structure automatic design method and device based on multi-source data fusion, and relates to the field of municipal pipe network design, and the method comprises the steps: pre-constructing a design rule of a pipe network structure; a pipe section of the pipe network structure is matched with a nearest geological drill hole, a corresponding virtual geological section is obtained in combination with geological survey data, and the virtual geological section comprises soil layer type information and soil layer thickness information; according to a foundation treatment scheme judgment rule of the design rule, a corresponding foundation treatment scheme is obtained in combination with the pipe type and soil layer type information of the current pipe section and the foundation bearing capacity characteristic value in the geological survey data; according to a supporting scheme judgment rule of the design rule, a corresponding supporting scheme is determined based on the trench excavation depth, the soil layer type information and the soil layer thickness information of the current pipe section; and the design rule is converted into an executable foundation treatment scheme and an executable supporting scheme, so that low efficiency of artificial experience judgment is avoided, and automation of municipal pipe network structure design is realized.

The invention provides a reservoir area soil bank slope bank collapse width prediction method, and relates to the technical field of water conservancy and hydropower engineering, and the method comprises the following steps: measuring the current terrain section of a bank slope, obtaining the bank slope height, slope angle and bank slope terrain line before reservoir water storage, and obtaining the characteristic water level of reservoir water storage; drawing an engineering geological profile map; the bank slope soil body is sampled, and physical and mechanical indexes of the bank slope soil body are measured through a test; and drawing a bank collapse width schematic diagram, and predicting the bank collapse width of the bank slope. According to the method, the four-section method bank collapse prediction model is established, the influence of the water level amplitude variation area and stormy waves on the stability of the reservoir bank is fully considered, the problem that the actual bank collapse width is inconsistent with the prediction result after water storage of the reservoir in the prior art is solved, and meanwhile the method has the advantages of being simple, easy to implement, high in reliability and accurate in prediction result.

The embodiment of the application provides a complex stratum cave volume calculation method and related equipment, and belongs to the technical field of geological survey. The method comprises the following steps: obtaining a geological profile and a drilling columnar graph; performing information extraction on the drilling columnar graph to obtain drilling information of each drilling point; performing structured processing on the drilling information of all drilling point positions to obtain an original stratum distribution table; performing elevation supplement on the original stratum distribution table according to the geological profile to obtain a standard stratum distribution table; based on the standard stratum distribution table, performing data splitting on each stratum as a derived unit to obtain a plurality of stratum derived tables; performing three-dimensional model reconstruction on each stratum derived table to obtain a stratum interface entity model of each stratum; performing target detection on all stratum interface entity models according to a preset cave label to obtain a target cave model; and performing face domain attribute analysis on the target cave model to obtain a target cave volume. The application can improve the accuracy of cave volume calculation.

This application provides an automatic stratigraphic stratification and well-connected profile construction method, relating to the geological field. The method includes: reading logging curve data from multiple wells and performing preprocessing and difference normalization to obtain a standardized sequence; performing adaptive continuous wavelet analysis and stratigraphic boundary identification on the standardized sequence to obtain a stratigraphic boundary set; automatically classifying stratigraphic units based on the stratigraphic boundary set to construct a classified stratigraphic sequence; performing inter-well comparison based on the multi-frequency components reconstructed from the standardized sequence using adaptive continuous wavelet analysis and a dynamic time warping algorithm with strong boundary constraints to obtain a globally optimal warping path; establishing an inter-well isochronous grid based on the globally optimal warping path, and color-filling using lithology labels from the classified stratigraphic sequence to generate a well-connected geological profile. The technical solution of this application provides a reliable technical means for oilfield stratigraphic evaluation and lithological interpretation.

This invention provides a geological steering method for horizontal wells in tight sandstone gas reservoirs. First, relevant data from the target well and adjacent wells are acquired. Then, using this data, the geological characteristics of the target sandstone body, its micro-structure, reservoir heterogeneity, and stratigraphic occurrence are determined. Next, using well logging interpretation from adjacent wells and geophysical channel characterization, a refined three-dimensional geological model based on seismic constraints is established to clarify the sandstone body distribution and interlayer development. A geological profile is established along the well trajectory to determine the location of the horizontal well trajectory. Finally, trajectory optimization is performed. This steering method effectively combines geological and seismic data, using three-dimensional geological modeling to reasonably predict the distribution of reservoir sandstone bodies and scientifically assess interlayer development. The geological steering method and its implementation effectiveness are effectively guaranteed, and it can meet the geological steering requirements of different gas reservoirs and well areas with significantly different geological characteristics.

The application provides a rock mass internal joint network reproduction discrete element modeling method, comprising the following steps: measuring field joint information; establishing a discrete element numerical model; arranging a geological profile along the ore body dip direction; cutting a roadway boundary in the numerical model, cutting the measured joint information in the rock mass, and analyzing the correlation between the measured joint length and the triangular block length; selecting the range of the measured joint length and the triangular block length, respectively calculating the simulated joint size and the triangular block size of the hanging wall, the ore body and the footwall, simultaneously calculating the simulated joint spacing and the simulated gap, and embedding the numerical model; and based on the joint geometric parameters, constructing the joint network model of the hanging wall, the ore body and the footwall respectively. The engineering adaptability of the application is enhanced, the deep roadway surrounding rock stability analysis is supported, the model prediction result is close to the field monitoring data, and a reliable basis is provided for support design.

The invention relates to the technical field of geological data processing and prediction, and provides a coal mine geological model dynamic updating method based on drilling data and related equipment. The method comprises the following steps: acquiring drilling data generated by an intelligent drilling machine in a drilling process, and carrying out preprocessing and feature extraction to generate a drilling response sequence taking a drilling depth as an index; performing data analysis to generate a geological response feature vector composed of a plurality of statistical features; performing data analysis and sampling processing on the geological response feature vector through a multilayer Fourier neural operator to generate an initial calculation result; according to the method, the continuity and the consistency of results are optimized through a sequence re-calibration technology, a virtual geological section with high credibility is generated, and finally, accurate and incremental model updating is only performed on a local space region influenced by drilling based on the section, so that the updating efficiency is greatly improved while the accuracy is ensured, the geological model can dynamically evolve along with drilling, and the drilling efficiency is improved. And the urgent demand of a production site on real-time geological information is met.

The application provides a three-dimensional geological profile drawing method based on Autolisp, which comprises the following steps: S1. interactive rectangular positioning and rapid cutting; S2. cutting the upper line segment of the surface line based on the fence mode; S3. rapidly adding a frame; and S4. attribute-driven batch selection of graphic objects. The application completely replaces the existing CAD drawing process which relies on a large number of manual operations, realizes rapid, accurate and standardized drawing of a three-dimensional geological model profile into a report drawing, greatly improves the efficiency and quality of achievement preparation in the field of geological exploration, and solves the problems of mechanical repetitive labor and the like in the process of drawing a drawing by a geologist.

The invention belongs to the field of three-dimensional geological modeling, and particularly discloses a bilinear interpolation and multipoint statistical simulation combined three-dimensional stratum modeling method, which comprises the following steps: acquiring two parallel geological sections A and B discretized according to geological attributes; generating a plurality of middle sections through bilinear interpolation based on A and B according to a plurality of preset different positions; dividing each generated middle section into a condition data part and a prior probability part; for each middle section, on the basis of the condition data part and the prior probability part of the middle section, the section A and the section B are used as training images, multi-point statistical simulation is executed, and through a Bayesian probability fusion mechanism, a multi-point statistical simulation result after probability distribution is fused with the prior probability part to obtain a multi-point statistical simulation result; obtaining a final geological attribute of each position in the middle section; and synthesizing all the obtained middle sections into a three-dimensional geologic model. According to the method, the calculation efficiency and the real description capability of the complex geological structure can be considered in geological modeling.

This application relates to the field of image processing technology, specifically to a BIM-based method and system for generating geological profiles for traffic construction. The method includes: determining the geological sweepability of static buildings in historical construction areas to the lateral areas on both sides of the current construction area; determining the geological structural interference of each lateral area based on the morphology and structure of the geological layers and the geological sweepability of each lateral area; determining the adjustment weights of the geological profile images based on the geological structural interference of the lateral areas on both sides of the current construction area; and adjusting the resolution of the geological profile images of the lateral areas on both sides of the current construction area based on the adjustment weights, thereby obtaining the target geological profile image. This method can flexibly zoom in or out on the details of the interfering areas as needed, and the obtained target geological profile image more effectively assists in construction decision-making.

The present application relates to the technical field of data processing, in particular to a geological profile generation method and system for geotechnical investigation, comprising: dividing all sampling points into independent regions according to the maximum difference between the seismic wave sampling points and the stratum distribution of adjacent core drilling sampling points, interpolating the first stratum distribution of each position in each independent region by using the stratum distribution of the core drilling sampling points, and interpolating the second stratum distribution of each position in each independent region by using the stratum distribution of the seismic wave sampling points; obtaining the fault identification error of adjacent independent regions, fusing the first stratum distribution and the second stratum distribution of each position in each independent region into the final stratum distribution of each position by using the fault identification error, and drawing the geological profile by using the final stratum distribution. The present application realizes the purpose of efficiently and accurately generating the geological profile of a large range of regions.

This application discloses a two-dimensional stratigraphic structure prediction method and system under limited borehole observation information. The method first spatially discretizes the engineering geological profile of the target area to obtain several grid cells. Then, it constructs state variables for each grid cell, including feature vectors characterizing the engineering properties of the soil and labels representing the stratigraphic type. Subsequently, it establishes characteristic prototypes for various stratigraphic types based on the state variables of the borehole samples. Next, it constructs a stratigraphic classification model containing data consistency terms and spatial regularization terms. The former quantifies the matching degree between grid cells and stratigraphic types, while the latter achieves spatial continuity constraints by penalizing stratigraphic transitions between adjacent cells. Finally, it solves the model to obtain the two-dimensional stratigraphic structure prediction results. This application effectively solves the problems of spatial continuity and engineering rationality in stratigraphic prediction under limited borehole conditions, improving the stability of the prediction results.

The invention discloses a near-surface geological section generation method and device, and the method comprises the steps: extracting a stratum boundary line and stratum occurrence vector point data of a target near-surface geological region based on a satellite remote sensing image and a digital elevation model; elevation information is obtained from the digital elevation model data, and a topographic profile contour line containing a topographic relief curve and a downward extension copy line thereof is generated; carrying out space intersection on the topographic profile contour line and the stratum boundary line to generate an extension stratum node under the contour line; matching corresponding stratum occurrence vector point data for the extended stratum nodes; calculating the downward extension direction of the stratum according to the inclination angle and the inclination angle in the matched stratum occurrence vector point data, and generating a target near-surface stratum unit; and automatically filling geologic symbols and colors according to the name of the target near-surface stratigraphic unit, and drawing the geological profile of the target near-surface geological area according to a preset proportion. The method is used for improving the drawing precision and drawing efficiency of the near-surface address profile.

The invention discloses a small-diameter multi-mode shield pipeline system. The small-diameter multi-mode shield pipeline system comprises a cutter head module, a slurry inlet module communicated with the cutter head module, a slurry discharging module communicated with the cutter head module and provided with a slurry outlet, and a recycling module used for recycling slurry in the slurry inlet module and the slurry discharging module in pipeline extending operation. Through the modules, zero emission in a pipeline extension slurry collecting mode and three tunneling modes are realized; wherein the tunneling mode comprises an air cushion direct discharge mode, a screw machine tunneling mode and a screw machine direct discharge mode. The invention further discloses a small-diameter multi-mode shield pipeline system control method which is characterized by comprising the following steps that S1, a tunnel to be tunneled is divided into a full-section homogeneous stratum section, a weak / full-strong weathered stratum section and a micro-weathered / full / medium weathered / broken stratum section according to a geological survey report and an advanced geological exploration result; s2, aiming at each divided geological section, determining a tunneling mode which should be adopted by the section; and S3, the shield tunneling machine conducts tunneling according to the divided section sequence, and when the shield tunneling machine conducts tunneling to the initial position of a certain geological section, according to the planning in the S2, the valve set of the pipeline system is controlled to be switched to the tunneling mode determined by the section for construction. The shield tunneling machine aims at solving the technical problems that in the prior art, a shield tunneling machine is single in adaptive terrain and prone to blockage during tunneling, and grout leaks easily during pipe replacement and replacement.

The application discloses a shale organic matter enrichment master control factor evaluation method and system, including: collecting shale sample geochemical data to construct an original data set; obtaining a standardized feature subset after preprocessing and constructing a multi-dimensional feature matrix, wherein the independent variable is a paleoenvironment index, and the dependent variable is total organic carbon content; grouping all samples according to geological sections, and training a random forest model for each section; using a SHAP model to interpret each section model, calculating the quantitative contribution percentage of each paleoenvironment index and determining the master control factor of the section; obtaining a contribution percentage set of each section, and comparing and analyzing the dynamic evolution law of the contribution percentage of each index with the stratigraphic stage. Through the method, the qualitative sorting to quantitative attribution is realized.

This invention discloses a digital design method for bridge pile foundations based on the coordination of geological and pile foundation parameters, comprising: S1, constructing a geological database; S2, acquiring the unique geological profile information of each pile, setting the initial value of the pile length for each pile, and obtaining its comprehensive value and the vertical foundation coefficient of the soil at the pile bottom; S3, establishing and solving equilibrium equations, and then calculating the external force vector at the pile top of each pile; S4, calculating the single pile bearing capacity and determining the pile length: S41, calculating the design axial force and allowable bearing capacity of each pile; S42, if [condition missing], then setting the pile length to the required length; if [condition missing], then adjusting the pile length in S2, executing S2~S41 until [condition missing]; S5, calculating the internal forces of the pile body section of each pile based on the external force vector at the pile top, the comprehensive value, and the vertical foundation coefficient of the soil at the pile bottom, for reinforcement design. This invention realizes pile foundation design with a one-pile-one-geological-model, saving materials and solving the problem of interdisciplinary collaboration.

The invention discloses a method for generating profile data according to an isodepth map and a survey line position, which comprises the following steps of: performing grid interpolation on adjacent isolines of the isodepth map, and generating a plurality of grid data DEM (Digital Elevation Model) corresponding to different stratums by taking a fault line as an obstacle element; setting a seismic exploration survey line on each raster data DEM, and discretizing the seismic exploration survey lines into points according to a certain distance; importing the point attribute table of the discrete points into GIS software, extracting depth values of the discrete points from the raster data DEM, constructing a profile map, taking the X axis of each discrete point in the survey line distribution map as the X axis of the profile map, and taking the stratum depth direction of each discrete point in the survey line distribution map as the Y axis of the profile map; connecting discrete points on the profile map into a line to form a profile line, depicting a fault on the profile map according to geology knowledge, adjusting a cross stratum, and connecting the fractured profile line to form a closed line; according to the technical scheme of producing the geological profile directly based on the isodepth map, the profile data generation cost is reduced.

The application discloses a method and program product for determining serpentinization water influx of a serpentized mantle peridotite. The method comprises the following steps: obtaining geophysical data of a target area, constructing a geological profile model representing the geological structure of the target area based on the geophysical data, and embedding initial water content and rock porosity data into the geological profile model; using a class profile method to inversely reconstruct geometric shape information of a fault in the geological profile model to obtain fault spatial distribution data; constructing a geodynamics model according to the geological profile model, determining seepage data of free water seeping downward from the upper part of the fault based on the geodynamics model; determining serpentinization water influx of a serpentinization reaction zone and a target water influx in the target area according to temperature and pressure field simulation results, mineral stability data of the target area and the seepage data. Therefore, the accuracy and reliability of serpentinization water influx calculation are improved.

The invention relates to a compilation method and process for a shallow water delta front sedimentary small layer isochronous geological section. The method comprises the following steps: correcting different lithologic unit sedimentary rate differences and leveling two reference surfaces at the same time layer; compared with a traditional standard layer top surface layer leveling method, the method has the advantages that the transverse isochronism error of the geological section obtained by the method is smaller, and the method has the advantages that the isochronism error caused by the deposition rate difference in the geological section and the isochronism error which is continuously accumulated along with the increase of the distance from the top surface of the standard layer are reduced; and a more accurate geological profile is provided for fine description of a small-layer internal reservoir.