43 results about "Stratigraphic section" patented technology

The invention discloses a method for fast establishing interactive tunnel and wall rock body three-dimensional models, which comprises the following steps: A. tunnel line position information base establishment: collecting tunnel line position information and establishing a line position information base; B. geological exploration base establishment: carrying out standardized processing on hole drilling data obtained through geological exploration; C. three-dimensional stratigraphical profile constraint information base establishment: collecting three-dimensional stratigraphical profile constraint information; D. three-dimensional stratigraphical boundary constraint information base establishment: collecting self defined model establishing boundary; E. real three-dimensional tunnel model establishment: precisely establishing a tunnel three-dimensional model according to the information of tunnel line positions, the tunnel hole body outer cross section and the inner cross section; F. real three-dimensional wall rock model establishment: establishing a wall rock model according to the hole drilling and stratigraphical information; and G. tunnel digging and profile real-time cutting display based on the wall rack model body unit. The model establishing efficiency and precision of the tunnel simulation and digitalized design can be improved, the real-time cutting display of the tunnel passing through the wall rock and any vertical profile can be realized, and the fast reestablishment of the model can be realized.

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.

A method for determining a formation profile surrounding a well bore includes receiving field log data for the formation and generating a Jacobian matrix responsive to the provided field log data. A quasi-Newton update is used to update the Jacobian matrix for each necessary iteration until a generated formation profile converges with the received field log data.

The invention discloses a structure modeling method by means of a horizontal well three-dimensional visualization stratigraphic correlation. The method comprises the steps that data are imported to three-dimensional visualization software, a regional stratigraphic vertical and horizontal distribution mode, a small layer vertical well section measurement recognition mode, a small layer inclined well section measurement recognition mode and a small layer horizontal well section recognition mode are built, a well trajectory plane distribution diagram is worked out and obtained, then well trajectory arrangement characteristics are analyzed, a stratigraphic section can be obtained through cutting along the well trajectory by means of the three-dimensional visualization software, horizontal well layer-penetrating point upper-lower layer interface elevation prediction is carried out, a layer model is built by means of an elevation set composed of layered points and prediction points on all small layers, an elevation data set of fine structure models of all the small layers is built, the data set is input to the three-dimensional visualization software, and a structure model is built. By means of the method, more oil and gas reservoir structure modeling small-layer interface data mainly for highly-deviated wells and horizontal wells can be obtained, and the accurate, reliable and fine structure model is built.

The invention discloses a similar reconstruction model experiment device and method based on three-dimensional geological prospecting. A three-dimensional geological prospecting device is used for prospecting three-dimensional geological information of a study area, then the three-dimensional geological information is input in a three-dimensional data reconstruction system and reconstructed into three-dimensional data information, and the three-dimensional data information is input in a 3D printing device; similar materials and ratios corresponding to different geological structures are determined, and then three-dimensional stratigraphic section geological information of the study area is determined according to the three-dimensional data information; a 3D printing coal rock is printed ina model frame through a 3D printing device according to the geometric similarity rate and the volume-weight similarity rate, and a data monitoring device is mounted in the 3D printing coal rock; a hydraulic loading unit is started to apply loads; analogue simulation is carried out corresponding to the actual rock soil activity condition of a site, data in the data monitoring device is collected in the activity process, thus, the underground rock stratum real condition and rock stratum activities are accurately reflected, and meanwhile stress and displacement multi-site time varying monitoringand analyzing are achieved.

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 utility model relates to a high precision prestack depth migration method in the oil exploration reflected wave earthquake data processing process. The method comprises the following steps: prestack shot gather data on the unified datum plane is collected, continuation step length is determined, a velocity field is divided into small velocity areas, a wave field is extended through a split-step Fourier method according to the large step length in each small velocity field, 5 the wave fields of the velocity areas obtained after the continuation in different areas are merged according to the actual corresponding net point, smooth filter processing is carried out, the whole wave field after the continuation is obtained, linear phase shift interpolation is carried out on the two adjacent waves fields and each wave field in the middle which is extended according to the small continuation step length is obtained. The invention forms images according to the cross-correlation imaging principle, obtains the prestack depth shift result, displays the shift result to stratigraphic section images, obviously improves the imaging quality of complex geologic structure and has low cost.

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.

Riprap of river levees underwater detection method was described: positioning using two dual-frequency GPS receiver instantaneous. a set of GPS stations located in the ground, another set of GPS stations in tracking, their receiving antenna cables in fixed detector position; using the chirp of shallow stratigraphic profile, will launch a probe into the water, and the use of navigation software for water position that the importation of the initial design Coordinate Measuring line; By design measuring line navigation, taking flight, using continuous measurement mode, real-time record measured coordinates track location map; use of shallow stratigraphic profile of underwater riprap areas Detection, stratigraphic section acoustic recordings; to track location map and stratigraphic section sound and graphics combined with a variety of conditions underwater riprap A typical shallow image control features, thereby detecting underwater riprap, without judgment Stone, a stone and the stone siltation coverage area. The invention of the underwater riprap levee provides an effective and reliable detection method to record high resolution, visual power.

The invention, which relates to the technique of displaying virtual reality at a display screen, discloses a dynamic construction method of a three-dimensional geological section model. The dynamic construction method comprises the following steps: setting a section; extracting, determining and perfecting underground data; extracting and adjusting stratum data; intersecting a stratigraphic section with a stratum data structure; generating a section data structure; and forming a three-dimensional model. The dynamic construction method has the following advantages: the method plays a helping role in obtaining and constructing underground spatial information in urban construction, especially future smart city construction; the three-dimensional development of urban space and underground commercial traffic development and utilization can be promoted; and three-dimensional modeling can play a prominent role in geological research in underground mineral resource exploitation and geological research work.

The invention provides a drawing method of an LWD (logging while drilling) curve, and belongs to the field of oil and gas development and exploration. The method comprises the following steps: 1) establishing a longitudinal stratigraphic section; 2) projecting wellbore trajectory data to the longitudinal stratigraphic section; 3) constructing a two-dimensional vertical depth-logging response datapair sequence along a wellbore trajectory; 4) constructing a two-dimensional vertical depth-horizontal displacement pair sequence along the wellbore trajectory; 5) establishing a curve drawing coordinate drawing path, and drawing a first point N0 in the two-dimensional vertical depth-logging response data pair sequence; 6) along the wellbore trajectory, based on M successive points in the two-dimensional vertical depth-horizontal displacement pair sequence after the current drawing point, forming a regression equation through a cubic spline algorithm; 7)carrying out second-order derivation onthe regression equation, then, searching a turning point, and drawing a logging curve in a separate-path manner at the turning point; and 8) end. The method can realize clearer vertical stratigraphiccharacteristic display.

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 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 in discharge 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 provides an interwell sedimentary sequence research method based on a Markov chain mathematic model. The method comprises: counting frequency number on each kind of lithofacies transferring to another kind of lithofacies, establishing an upward transfer frequency matrix N; transferring the upward transfer frequency matrix N to a random sequence transition probability matrix S, and transferring the upward transfer frequency matrix N to an upward transition probability matrix P; according to the random sequence transition probability matrix S and the upward transition probability matrix P, obtaining a single well state difference value matrix K; simplifying the upward transition probability matrix P, to obtained a simplified upward transition probability matrix P'; and establishing a sedimentary sequence mode through the simplified upward transition probability matrix P'. For a stratigraphic section which is complex in lithological changes but has certain deposition law, the interwell sedimentary sequence research method based on a Markov chain mathematic model can predict change rules of lithological characters on a vertical direction of adjacent domains of the well according to lithological changes of a drilled well.

The invention belongs to the technical field of stratum information acquisition, and discloses a method for establishing a time domain sequence stratum profile by using sedimentary forward modeling, which comprises the following steps: performing three-dimensional sedimentary forward modeling numerical simulation on a stratum of a research area to obtain a sedimentary simulation result; establishing a deposition forward model and correcting; selecting a two-dimensional profile position and a grid point; establishing a two-dimensional time domain stratum profile, comparing the two-dimensional time domain stratum profile with the depth domain stratum profile at the corresponding position, and analyzing sequence stratum characteristics. Calculation is carried out through a diffusion equationreflecting water flow driving and slope terrain driving, and establishment of a time domain sequence stratigraphic profile can be achieved; the method for establishing the time domain sequence stratigraphic profile is simple and easy to implement, is realized by means of existing software, is low in cost and high in operability, and provides a new technical means for extracting time information inthe strata and determining the sequence boundary and the geological age of the internal strata.

Data filtering and processing techniques for generating improved wellbore resistivity displays are contemplated. In some aspects, a process of the disclosed technology includes steps for receiving a first measurement set comprising electromagnetic field data for a first tool depth in a geologic formation, receiving a second measurement set comprising electromagnetic field data for a second tool depth in the geologic formation, performing an inversion on the first measurement set and the second measurement set to generate a first formation profile and a second formation profile, and displaying the first formation profile and the second formation profile in a user interface (UI). Systems and machine-readable media are also provided.

The invention discloses a method and a device for constructing a geological section three-dimensional model. The method comprises the following steps: (1) loading two-dimensional data to form a section set SP, a stratigraphic section set S, a section line set SL and a grid set GEoDEM; (2) reading any section spo from the SP, and constructing a surface line GL and a reference line RL; (3) reading any stratigraphic section of the section spo, and performing spatial geometric transformation on the stratigraphic section and the ground surface line GL to obtain a transformed stratigraphic section and a transformed ground surface line; (4) converting the transformed stratigraphic section into three dimensions to obtain a three-dimensional stratigraphic section; (5) based on the three-dimensional stratigraphic section, creating a parallel stratigraphic section according to a preset strip width w, and constructing a stratigraphic three-dimensional model by using the two stratigraphic sections; and (6) circularly executing the steps until all stratums of all sections are traversed to obtain three-dimensional entity models of all stratums, and inlaying to obtain a three-dimensional geological section model. The method for quickly constructing the three-dimensional section model based on the two-dimensional geological section map is realized.

The invention discloses a visual display method for shallow stratum profile original data based on SEGY, and the method comprises the steps: firstly, referring to ocean survey specifications, combining with the on-site water depth topographic survey conditions, collecting and obtaining the shallow stratum profile original data under the condition that the requirements of survey line arrangement and observation system parameters are met, and storing the shallow stratum profile original data in an SEGY file format; importing a shallow stratum profile original data file of the SEGY of a certain measuring line, realizing data reading and decoding by using Matlab programming, and extracting all echo signal data of the measuring line by taking Ping as an abscissa and time depth as an ordinate; programming the extracted echo signal data to perform surge static correction, multiple wave suppression and true amplitude recovery processing, and generating a shallow stratum profile map to realizeimage visualization of the shallow stratum profile data. The method can be applied to analysis of single-channel and multi-channel seismic original data of deep and shallow water type shallow stratumprofiles mainly based on SEGY, and meanwhile necessary reference can be provided for analysis of side-scan sonar original data mainly based on an XTF format.

The invention provides a method and device for determining river type conversion of a fluvial facies stratum. The method comprises the steps: determining a fluvial facies sedimentary layer section ofa target region, and dividing sand groups according to the sedimentary cycle characteristics of the fluvial facies sedimentary layer section; on the basis of the fluvial facies sedimentary stratum profile, carrying out statistics to obtain sensitive sedimentary parameters in each divided sand group and using the sensitive sedimentary parameters for reflecting river type changes; acquiring sensitive sedimentary parameters in each sand group according to statistics, determining indication sensitive parameters with obvious characteristic response in the sensitive sedimentary parameters, and calculating a change rate average value of the indication sensitive parameters of each sand group; and according to the change rate average value of the indication sensitive parameters of each sand group,determining the river type conversion vertical layer section position of the fluvial facies stratum in the target area. The vertical layer section position of river type conversion of the fluvial facies stratum is quantitatively determined based on logging data, plane and profile sand body distribution characteristics of different layers of sections in the fluvial facies stratum can be more accurately implemented, and the effect of exploration and development deployment 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 the field of slope engineering, in particular to a method for depicting a stratum profile based on a small sample, which mainly comprises the following steps: obtaining stratum boundary measurement data from a drilling record; quantifying stratum boundary uncertainty by utilizing limited stratum boundary data; and simulating the uncertainty of the stratum boundary according to the statistical information obtained in the previous step. Compared with traditional stratum profile depiction, the invention has the advantages that limited drilling vertical soil property layering information is directly utilized, the Bayesian compression method is adopted to reasonably and objectively quantify the horizontal stratum boundary uncertainty and reconstruct the two-dimensional underground stratum, the problem that a traditional stratum boundary interpolation method is large in actual measurement data demand is solved, the accuracy of depicting the stratum boundary based on the small sample is remarkably improved, and certain theoretical innovation significance and engineering practical value are achieved.

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 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.

The invention relates to a method for delineating an ocean seamount carbonate rock distribution range and a processing terminal. The method comprises the following steps of: 1, preprocessing seismic profile data of a shallow stratum to obtain shallow stratum profile processing result data; 2, performing normalization processing to obtain normalized shallow stratum profile processing result data; 3, carrying out seismic attribute calculation to obtain instantaneous amplitude, instantaneous frequency and average frequency; 4, carrying out horizon pickup to respectively obtain a seabed horizon and a deposition layer substrate; and 5, carrying out intersection analysis according to the instantaneous amplitude and the average frequency, and determining an area where the instantaneous amplitudeattribute is represented as relatively low amplitude and the average frequency attribute is represented as relatively high frequency as an ocean seamount carbonate rock distribution range. The methodcan quickly identify and delineate the carbonate rock distribution range of a ocean seamount, can be applied to three-dimensional space to display the carbonate rock distribution range, and can be better applied.