Seismic data analysis processing, inversion, and interpretation of seismic data

Enwenode onajite, in seismic data analysis techniques in hydrocarbon exploration, 2014. In addition to the developments in all aspects of conventional processing, this twovolume set represents a comprehensive and complete coverage of the modern trends in the seismic industryfrom time to depth, from 3d to 4d, from 4d to 4c, and from isotropy to anisotropy. In addition to field acquisition parameters, seismic data processing results also depend on the techniques used in. The geophysical analysis project is responsible for the operation and maintenance of the usgs energy resources programs 2d and 3d seismic reflection data processing facility located in denver, colorado. Download citation seismic data analysis oz yilmaz has expanded his original volume on processing to include inversion and interpretation of seismic data. Seismic interpretation an overview sciencedirect topics. In addition to the developments in all aspects of conventional processing, this content represents a comprehensive and complete coverage of the modern trends in the seismic industryfrom time to depth, from 3d to 4d, from 4d to 4c, and from isotropy to anisotropy.

While modern multichannel data have increased the quantity and quality of interpretable data, proper interpretation still requires that the interpreter draw upon his or her geological understanding to pick the most likely interpretation from the. Seismic data processing is a course designed to provide students with. Pages in category fundamentals of signal processing the following 38 pages are in this category, out of 38 total. Seismic data analysis oz yilmaz chapter 10 structural. Going a step further toward integrated interpretation, we also offer simultaneous joint inversion of em, seismic, or gravity data, or all three. The use of conceptual models is essential in the interpretation of reflection seismic data. Technical issues can arise in correctly interpreting the data where noise is present in seismic imaging, and where threedimensional 3d seismic interpretation of subsurface structures is attempted. A seismic interpretation study should access the following data sets 2d or 3d seismic data cube.

This course covers practical aspects of signal theory and inverse problems with application to seismic data processing. Dippenaar petrosa summary seismically guided reservoir description involves estimating and mapping reservoir properties such as lithology, porosity, and pore fluid. Seismic data analysis investigations in geophysics seg library. Geological interpretation is an attempt to solve the. Processing, inversion and interpretation of seismic data, society of exploration geophysics. Us20150234070a1 computerassisted fault interpretation. Topics to be covered include statics corrections, filtering, velocity analysis, deconvolution, stacking and migration. Seisview 2d seismic data viewer and analysis software. Well data required for interpretation are wireline logs gamma ray logs, resistivity logs, porosity log, sonic logs, density logs and neutron logs or equivalent rock property model, check shot. Simply defined, seismic interpretation is the science and art of inferring the geology at some depth from the processed seismic record. Structural interpretation from seismic data is indeed a difficult endeavor. Hence, we can only hope to attenuate the noise and enhance the signal in processing to the extent allowed by the quality of the data acquisition. Relieve interpreters from tedious and repetitive activities so they can spend more time evaluating plays and validating findings. Processing, inversion and reconstruction of seismic data.

There are multiple applications of spectral decomposition for geophysical data analysis and processing such as the multiscale parameterization of inverse geophysical problems chiao and liang, 2003 and hydrocarbon indication by seismic section analysis at different frequency bands castagna et al. They address the bandlimited nature of deterministic inversion methods and integrate well data and seismic data at a fine scale within a stratigraphic geomodel framework. Processing, inversion, and interpretation of seismic data, has been republished as pdf files. Seismic interpretation is a process of analyzing seismic data for underground minerals, oil, natural gas, or fresh water deposits. Conventional processing of reflection seismic data yields an earth image represented by a seismic section which usually is displayed in time. Now i changed my career and do not need them anymore.

Almost always, seismic data are collected often in lessthanideal conditions. Our preprocessing algorithms are focused on the analysis and suppression of noise, including seismic interference, swell noise and multiples. Wavelet analysis for spectral inversion of seismic reflection. Wavelet analysis for spectral inversion of seismic. Machine learning is more popular in geological interpretation of seismic surveys data. Combine potent interpretation power with exciting visualization and point and click convenience.

They are relatively lowlevel and in some cases have their own data formats and involve learning an extensive syntax or metalanguage. Our pre processing algorithms are focused on the analysis and suppression of noise, including seismic interference, swell noise and multiples. Yilmaz, seismic data analysis processing, inversion, and. Interpretation on each line should proceed from wellimaged, wellconstrained portions of the line toward areas of poorer constraint. Note that in the strict sense, the inversion described for migration or imaging and the inversion described in this section have equivalent goals. In addition to the developments in all aspects of conventional processing, this twovolume set represents a comprehensive and complete coverage of the modern trends in the seismic industryfrom time to depth, from 3d to 4d, from 4d to 4c, and from isotropy to. Seismic data acquisition and processing springerlink. Each algorithm produces an estimate of the seismic moment, the moment tensor solution, the centroid. Processing, inversion and interpretation of seismic data. The algorithm helped obtain the optimal enhanced seismic volume that is preferable for the structural interpretation of seismic data and possibly could be used successfully for a.

Isbn 093183046x series 1560800941 set 1560800984 vol. Inversion qc integrating seismic inversion and seismic data processing s. Fundamentals of signal processing from oz yilmazs seismic data analysis book, published in 2001. Inversion qc integrating seismic inversion and seismic. Jul 19, 2016 prestack data evaluation with visualization, interpretation and analysis prestack preconditioning for seismic inversion prestack inversion and interpretation to identify potential reservoirs. The quality of data the seismic interpreter has determines the quality of the results of the interpretation after the study is completed. Seismic data processing geos 469569 spring 2006 geos 469569 is a mix of digital filtering theory and practical applications of digital techniques to assemble and enhance images of subsurface geology. The seismicdata processing consists of velocity modeling, wavelet processing, and seismic inversion. Seisview 2d seismic data viewer and analysis software in the omega platform is a 2d canvas that gives the geophysicist the tools to analyze and compare seismic data. Oz yilmaz has expanded his original work on processing to include inversion and interpretation of seismic data. However, conceptual models can create powerful anchors that prevent interpreters from reassessing and adapting their interpretations as part of the interpretation process. Yilmaz, seismic data analysis processing, inversion. The workshop will emphasize advances in seismic processing, conditioning, and their impact on analysis and inversion workflows which can satisfy the demands of reservoir characterization.

Figure i1 shows a seismic section from the gulf of mexico, nearly 40 km in length. Seismic inversion provides a means to estimate rock properties from seismic data. Prestack data evaluation with visualization, interpretation and analysis prestack preconditioning for seismic inversion prestack inversion. After the geology of the area to be studied is known, a data gathering process commences. Our geostatistical inversion workflows generate multiple highfrequency models for highresolution reservoir characterization and uncertainty analysis. Seismic amplitude calibration for quantitative interpretation. Forward modelingtop takes a model of formation propertiesin this case acoustic impedance developed from well logscombines this with a seismic wavelet, or pulse, and outputs a synthetic seismic trace. In this stage of redi processing, both the waveform modeling method of dreger and romanowicz 1994 and the surface wave inversion technique of romanowicz et al. It allows interpreters to make geological sense of seismic data, which carries inherent uncertainty. The scientists of the geophysical analysis project process both newly acquired seismic data, as well as older legacy data.

However, if we seek a more penetrating explanation, we find practitioners get tonguetied and talk around the subject in a variety of ways. The seismic data processing consists of velocity modeling, wavelet processing, and seismic inversion. Also, the pre processing activities at the bulwarkiongxt centre are designed to especially meet the needs of highend, detailed and superior quality data conditioning and imaging. Author has expanded his original volume on processing to include inversion and interpretation of seismic data. Electromagnetic data processing characterization schlumberger. While modern multichannel data have increased the quantity and quality of interpretable data, proper interpretation still requires that the interpreter draw upon his or her geological understanding to pick. Inversion is a technique that combines surfaceacquired seismic data and well log data to develop a model of subsurface layers and their thickness, density, and p and swave velocities. The algorithm helped obtain the optimal enhanced seismic volume that is preferable for the structural interpretation of seismic data and possibly could be used successfully for a seismic inversion. Case studies describing successes but also learnings from failures are particularly encouraged.

From the acoustic impedances produced by seismic inversion, the authors derive seismic. Comprehensive seismic data analysis and interpretation with. Combine potent interpretation power with exciting visualization and pointandclick convenience. Interactive picking of raw shot records with spectral analysis. Analysis of recorded seismic signals to filter reduceeliminate unwanted components noise and create an image of the subsurface to enable geological interpretation, and eventually to obtain an estimate of the distribution of material properties in the subsurface inversion.

Processing, inversion, and interpretation of seismic data investigations in geophysics, no. Pdf this modern introduction to seismic data processing in both exploration and global geophysics. Digital filtering theory applies to virtually any sampled information in time e. Extract the best possible interpretation analysis from your seismic data.

These are fullfeatured reflection seismology processing packages, with support for modeling, imaging, and inversion. Seismic interpretation is the extraction of subsurface geologic information from seismic data. Oz yilmaz has expanded his original volume on processing to include inversion and interpretation of seismic data. We use the petrel platform for integration and also omega geophysical data processing platform for seismic processing and simultaneous joint inversion. Processing, inversion, and interpretation of seismic data, issue 10, volume 1. Comprehensive seismic data analysis and interpretation. Well data are gotten from rock samples and measurements at depth from a wellbore. Yilmaz, seismic data analysis processing, inversion, and interpretation of seismic data, in s. Also, the preprocessing activities at the bulwarkiongxt centre are designed to especially meet the needs of highend, detailed and superior quality data conditioning and imaging. Processing, inversion, and interpretation of seismic data.