43 results about "Stratigraphic section" patented technology

The invention provides an automatically generating method of pinchout geological body three-dimensional complex profile, which performs virtual supplementation to missed stratigraphic data in drilling holes by starting from processing the data of the drilling holes and according to the space distribution of the data of the drilling holes. The method comprises the following steps of extracting the data of the drilling holes in the same layer according to a one-to-one corresponding rule of the stratum of the drilling holes, and combining the data into a profile line of the stratum; performing triangulation based on the upper and lower stratum points of the stratum formed by adjacent two drilling holes according to the extracted profile line of the stratum, thereby realizing three-dimensional visual expression for the stratigraphic section. According to the method provided by the invention, the automatic drawing problem of complex three-dimensional section is solved; the workload for hand drawing geological profile can be greatly reduced; the method is based on the stratum information of the drilling hole to identify the pinchout situation, so that the efficiency for space analysis and decision making can be improved; molding of complex geological body three-dimensional section can be adapted, and the method can be widely promoted and used in the three-dimensional geo-science modeling.

The invention discloses a method for carrying out well design by using time-lapse seismic, which comprises the following steps: 1) respectively obtaining seismic data of two different time points according to methods of the step a and the step b: a. detecting the stratum basic parameters of a region to be detected, manufacturing an oil deposit profile of the region to be detected, establishing a stratum profile module according to the oil deposit profile, and obtaining three data bodies: the longitudinal wave speed, the transverse wave speed and the density according to the stratum basic parameters and the stratum profile module; and b. carrying out AVO forward modeling to obtain the overlapped seismic data of each incidence angle; 2) processing the seismic data in the two times to obtain seismic data difference; 3) carrying out reversion on the seismic data difference to obtain longitudinal wave difference, transverse wave difference, density difference and longitudinal and transverse wave speed ratio difference; 4) predicting the oil deposit parameter change; and 5) carrying out well design. The invention forms the difference reversion based on the time-lapse seismic for realizing the oil deposit parameter change prediction process and determining the well design, and the goal can not be realized by using conventional methods.

The invention relates to a while-drilling well logging curve real-time comparison method and belongs to the technical field of horizontal well drilling. According to the technical scheme, the comparison method comprises the steps that firstly, the depths from measurement depth to vertical depth are calculated; secondly, the target layer is selected as a datum plane, the RSD (Relative Strata Depth) of a target point is calculated according to the vertical depth of the target point and the vertical depth of the datum plane, and accordingly the RSD calibration standard is built; and thirdly, a stratigraphic section is horizontally moved or rotated, and when the shape of an RSD curve of a horizontal segment is consistent with the shape of an RSD curve of a guide eye well under RSD coordinates, the stratum adjusting work is completed. The comparison method is related to the stratum shape in the correction process, so the method can be used for inspecting whether the understanding of a stratum dip angle is correct or not and used for stratum identification in the tracking process of horizontal well drilling; and by means of the comparison method, the obtained curve of the horizontal segment can be projected on a perpendicular path, the RSD calibration serves as the standard, the shape of a well logging curve of the horizontal segment and the shape of a well logging curve of the guide eye well are made to be the same, direct comparison between the curves is achieved, and the real-time performance and the accuracy of the tracking work are improved advantageously.

The invention discloses a construction method of an engineering geological profile, relating to the technical field of geological survey. The method is characterized by comprising the following steps of the determination of boreholes used by constructing a section map, borehole data organization, stratigraphic section line connection, and section map auxiliary element improvement. The method has the advantages that based on the preprocessing of data, a data mining method is used, and through the geological data seamless integration in the levels of syntax, semantic and model, the real-time updating is carried out, and the effective integration of multi-source data is realized. The method is applied to the expression of a survey result in a project is included and the expression of a survey result in design, analysis, construction related to geotechnical engineering is included. The method is applied to the expression of a survey result in the design, mining and recovery of an underground space is included, and the planning efficiency of a city underground space is improved.

Embodiments of methods of creating and interpreting animated mosaics of multiple seismic surveys are disclosed herein. Volumes from individual seismic surveys may be flattened in each seismic cube. Animations / movies may then be produced by capturing a series of z-slice movie frames through each of the flattened volumes. The individual sets of movie frames are geo-referenced to a basemap image of well locations using appropriate composition software. Where overlap exists between surveys, the surveys are prioritized and lower priority volumes are masked by higher priority volumes. This technique provides a matched, unbroken image across overlapping volumes at each stratigraphic layer. As the movie or animation plays, a moving arrow pointer shows the vertical position of the current movie frame on a stratigraphic section consisting of a seismic reference section that is optionally labelled with suitable regional sequence names and other stratigraphic zonation data.

The invention relates to a method and a processing terminal for delineating the distribution range of oceanic seamount carbonate rocks. The method includes: step 1: preprocessing the seismic profile data of the shallow stratum to obtain the processing result data of the shallow stratum profile; step 2: normalizing Step 3: Perform seismic attribute calculation to obtain instantaneous amplitude, instantaneous frequency and average frequency; Step 4: Perform horizon picking to obtain seabed horizon and sedimentary layer respectively Basement; Step 5: Perform intersection analysis with the instantaneous amplitude and average frequency, and the area corresponding to the instantaneous amplitude attribute expressing relatively low amplitude and the average frequency attribute expressing relatively high frequency is the oceanic seamount carbonate distribution range. The invention can quickly identify and delineate the carbonate rock distribution range of oceanic seamounts, and can be applied to display the carbonate rock distribution range in three-dimensional space, which can be better applied.

The invention discloses a method for identifying and classifying seabed bottom based on a shallow stratum profiler and SVM, which comprises the following specific steps: step 1, using a shallow stratum profiler to collect shallow stratum echo acoustic signal data at a designated location; step 2 The data in step 1 is preprocessed to obtain the training set and test set required for SVM training; the RBF kernel function model used in step 3 is used to model, and the model is trained to obtain the bottom classification model; step 4 uses cross-validation The method, multiple tests to get the optimal parameter C and parameter gamma , and then obtain the optimal sediment classification model; the present invention utilizes the SVM sediment classification model of the data measured by the shallow strata profiler, which can process a large amount of data after training, and efficiently and accurately identify the submarine sediment type, which has important application value.

The invention provides a tridimensionality drainage method for a gravity field. By drawing an underground percolation contour map and a stratigraphic section map, the method carries out earth stability analysis, and sets vertical gulley holes and the position of a cut-off wall according to the acquired data with the aid of a boundary map of a stratum percolation pressure field for stratum safety condition analyzed with stratum professional experience. The invention also provides a tridimensionality drainage structure of a gravity field, which comprises at least one cut-off wall and at least one horizontal drain pipe. A drainage path system constructed by the method can truly discharge perched water and underground vadose water in the tridimensionality geographic space of regions covered indischarge construction according to natural gravity of physics so as to ensure the designed drainage efficiency and effectively control the percolating water pressure in the stratum, thereby being applicable to stratum with various geological conditions and various percolation rates.

The invention belongs to the technical field of coal geological exploration, and relates to a method for drawing water body change curves formed by coal seams. Firstly, different macroscopic coal rock components or lithology of gangue inclusions are numbered, and then the scale for drawing water body change curves formed by coal seams is determined. The stratum section or columnar section of the coal seam is drawn from the bottom to the top according to the thickness of the layered statistics; then the water body change curve formed by the coal seam is drawn, and the abrupt change points are found and marked according to the characteristics of the water body curve formed by the coal seam, and combined with the water body change process of the coal seam formation, the coal seam formation environment Describe and explain; its process is simple and easy to operate, which enriches the ideas and methods for drawing water body change analysis curves when multi-layer coal or coal seams containing various types of gangue are formed, and can more accurately restore and analyze the deposition of various coal seams surroundings.

Carrying out straight line fit between instantaneous frequency point corresponding to peak point of envelope signal of echo signals and adjacent instantaneous frequency points, the method obtains relation between accoustic attenuation of marine bottom sediment and frequency. The system includes transducer array, electronic extension, temperature sensors, and main end in use for monitor and control, and storage. The designed electronic extension carries out data process by using the method provided by the invention. Featureas are: overcoming current technical shortcomings in principle, correct philosophy of measurement, quick measurement and accurate result.

The invention provides a method for drawing logging-while-drilling curves, which belongs to the field of oil and gas development and exploration. The method includes: the first step, establishing a vertical stratigraphic profile; the second step, projecting the borehole trajectory data onto the longitudinal stratigraphic profile; the third step, constructing a two-dimensional vertical depth-logging response data pair along the borehole trajectory sequence; the fourth step is to construct a two-dimensional vertical depth-horizontal displacement pair sequence along the borehole trajectory; the fifth step is to establish a curve drawing coordinate drawing track, and draw the two-dimensional vertical depth-logging response data pair sequence The first point N0; the sixth step, along the wellbore trajectory, based on the points in the sequence of M consecutive two-dimensional vertical depth-horizontal displacement pairs after the current drawing point, the cubic spline algorithm is used to form a regression equation; the seventh The first step is to conduct second-order derivation of the regression equation, and then search for the inflection point, and draw the logging curve from the inflection point; the eighth step is to end. The method of the invention realizes clearer vertical formation feature display.