Seismic interpretation is a process of analyzing seismic data for underground minerals, oil, natural gas, or fresh water deposits. Pitfalls in the structural interpretation of seismic data introduction to special section. Seismic interpretation is the thoughtful procedure of separating these effects. Seisware continues to be the seismic interpretation choice at encana. Simply defined, seismic interpretation is the science and art of inferring the geology at some depth from the processed seismic record. Article pdf available in journal of himalayan earth sciences volume 48 12015. The interpretation process can be subdivided into three interrelated categories. An introduction to seismic interpretation pdf free download. Continuity of reflections indicating geologic structure. Fundamentals of seismic data interpretation and evaluation. It also shows seismic images in black and white print and covers compression related structures. Moreover, an interactive environment is versatile in viewing the 3d data volume. Structural interpretation of seismic reflection data. Seismic 2d reflection processing and interpretation of shallow refraction data abstract posiva oy takes care of the final disposal of spent nuclear fuel in finland.
Structural interpretation of seismic data from an xy field, onshore. Softwares interpretative analyses of cdp gathers, nmo stack, fk filtering deconvolution and migration. So go beyond tracing horizons and understand their context within the structural system by extracting key information from seismic surveys and other datasets. In year 2001 olkiluoto was selected for the site of final disposal.
In areas with favorable rock properties it is possible to detect hydrocarbon directly by using standard 3d seismic data. Seismic data interpretation and evaluation for hydrocarbon. A seismicstructural interpretation, on the identification of. Representing a compilation of examples for different types of geological structures, atlas of structural geological interpretation from seismic images is a quick guide to finding analogous structures. Interpretation of threedimensional seismic data, aapg memoir 42, seg investigations in geophysics no. The use of an interactive interpretation workstation is a common way to deal with large 3d data volumes. Introduction to petroleum geology and geophysics geophysical methods in hydrocarbon exploration.
Seismic attribute analysis can extract information from seismic data that is, otherwise, hidden in the data and have been used to identify prospects, ascertain depositional environments. We also have at his neighboring the doualakribicampo basin which with the rio del rey constitutes a great reserve of hydrocarbon and high potential reservoirs. In this study, the hydrocarbon potential of xyfield in onshore. Chapter 11 structural interpretation of seismic reflection data. Oct 15, 2016 basics of seismic interpretation slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. As one of the first books to present such a comprehensive treatment of the topic, seismic analysis of structures is ideal for postgraduates and researchers in earthquake engineering, structural dynamics, and geotechnical earthquake engineering. Lithologic interpretation and well correlation were carried out using the well log suites.
The importance of structural model availability on seismic. Psa seismic structural interpretation, on the identification of possible causes in the formation of gas chimneys in colombias offshore. Coordinate reference systems crs importance of crs in seismic data interpretation. Structural balancing vs horizon flattening on structure. Structural and stratigraphic interpretation methods and pitfalls using two and three dimensional seismic data.
Lecture contents geophysical methods theory principles extensional sedimentary basins and its. The application of seismic data to exploration and production of hydrocarbon deposits. Welltie analysis is a starting point for mapping facies and geology observed at well locations into seismic volumes. The second step of the structural interpretation procedure is to transfer the fault pattern defined by coherency data to the associated 3d seismic wiggletrace data volume. Exercises avo amplitude variation with offset interpretation exercise prestack time migration pstm.
Application of structural geology in seismic interpretation. In this study, seismic interpretation and structural analysis of the oml 124 oil block was confined to the ossu field. For new prospects in any area, seismic data interpretation for hydrocarbon traps is not sufficient, further detail study. Appraising structural interpretations using seismic data. The present investigation involved the interpretation of old secondary seismic sections in order to come up with a subsurface structure with an aim of identifying and delineating possible hydrocarbon traps and prospective areas. The course is designed for geophysicists working on seismic interpretation of complex structures, who need to understand the seismic expression of structures in petroleum basins, and correctly apply structural models and techniques to seismic interpretation. Seismic data onshoreoffshore 2d and 3d interpretation parameters seismic data libraries. Is there any structural atlas on seismic interpretation. Structural mechanics to turnstone seismic interpretation. Commercial building structural design and analysis major.
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. The target audience of the book is practicing seismic structural engineers and architects, in addition to students and teachers of engineering and architecture colleges striving to understand seismic behaviour, analysis and design of buildings. To acquire skills in interpretation of 3d seismic data to enhance theoretical knowledge of seismic structural interpretation, stratigraphic interpretation, reservoir identification and evaluation, and horizon and formation attributes. Practical seismic interpretation pdf free download. A seismic interpretation study should access the following data sets 2d or 3d seismic data cube. Reflection seismic data are used to image and understand the subsurface structure of the earth, across scales and tec tonic settings e. Fault interpretation is an important step in seismic structural interpretation and has a bearing on the quantitative interpretation that may eventually be carried out. Thus, availability of wells data and core plugs or core logs. Static reservoir modeling using well log and 3d seismic data. Seismic data interpretation seismic data interpretation. Modern computerbased methods provide important advantages to the interpretation of seismic data, such as the generation of 3d models, attribute analysis or the easy access to multiple display options e.
However, if we seek a more penetrating explanation, we find practitioners get tonguetied and talk around the subject in a variety of ways. Developed for classroom use, the book can also be used for advanced undergraduate students planning for a career or further study in the subject area. Interpretation of the seismic data also reveals possible gas flow. Seismic design specification for buildings, structures, equipment, and systems. Seismic attributes are the components of the seismic data, which are obtained by measurement, computation, and other methods from the seismic data. Seismic data is not 100% convincing if it is to stand alone. We focused this experiment only on students to observe the potential variability in interpretation of the same section in a.
Dec 15, 2016 principles of seismic data interpretation m. Structural interpretation of seismic data in the south of zindapir area, sulaiman fold belt, pakistan. This step requires knowledge of interval velocities for each layer, and as such. Seismic facies analysis and structural interpretation of the. Geophysics was one of four products we tested as part of the rfp. Prior to joining virginia tech in 2001, charney accumulated twenty years of experience as a practicing structural engineer.
Structural interpretation of seismic data from an xy field. The 2006 jbc structural seismic design manual illustrates how the provisions of the code are used. Four case studies make up almost the entire last third. Rockphysicsassisted welltie analysis for structural. It is a common practice for a geoscientist to conduct stratigraphic and structural interpretation on the seismic data, be it a 2d or 3d seismic dataset. Chapter 6 seismic design page 62 geotechnical design manual m 4603. All of the structural members were designed in accordance with aci, asce 7, and massachusetts state building code 7th edition. Structural interpretation from seismic data is indeed a difficult endeavor. Seismic sequence analysis was carried out on the seismic data by picking. The structural interpretation of the seismic data is presented in figures 4 and 5. Seismic data have a few advantages over other data sets. Bridge approach embankments and fills through which cutandcover tunnels are constructed should be designed to remain stable during the design seismic event because. Seismic data interpretation and evaluation for hydrocarbon exploration and production a practitioners guide. If you continue browsing the site, you agree to the use of cookies on this website.
Frequency analysis of seismic data create synthetics integrating vsps, sonic and densities structural reconnaisance tie synthetics to seismic data identify seismic reflectors that correspond to regional sequence boundaries generate interpretation of regional markers, major faults and unconformities identify areas of structural interest. Seismic interpretation is the extraction of subsurface geologic information from seismic data. Encana was tasked with migrating geoscientists to a pc based software platform. Seismic attributes and their applications in seismic. The 2000 ibc structural seismic design manual was developed to fill a void that exists between the commentary of seaocs blue book, which explained the basis for the code provisions, and everyday structural engineering design practice. Stratigraphic traps are generally subtler and difficult to recognize on seismic sections as opposed to structural traps. In a seismic interpretation experiment by macrae et al. A 3d structural interpretation was one of the focus of effort, trying to identify the role of faults in hydrocarbon migration, to detect the migration routes, and to find the seismic events that could be the source rock location.
Intergrated seismic stratigraphic and structural analysis of. Pitfalls in the structural interpretation of seismic data william l. Currently construction of the underground research facility, onkalo, is going on at the olkiluoto site. Course overview structural interpretation of seismic data file. Pdf structural interpretation of seismic data in the south. Seismic interpretation an overview sciencedirect topics. Seismic facies analysis and structural interpretation of. He is the author of many publications on the application of structural analysis methods in seismic design. 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 data. Design examples flow charts fema p1051b september 2016. Pdf seismic data interpretation and evaluation for. The two horizons in the inline seismic section occurred at the levels of 2120ms.
Seismic design specification for buildings, structures. Seismic 2d reflection processing and interpretation of. Bias and misunderstanding have unfortunately resulted in countless dry holes. Structural seismic interpretation is directed toward the creation of structural maps of the subsurface from the observed threedimensional configuration of arrival times. Finally, the chapter describes a suite of interpretation pitfalls that any interpreter of seismic data should be aware of before interpreting seismic images. Structures associated with compressional stress regimes. Interpretation on each line should proceed from wellimaged, wellconstrained portions of the line toward areas of poorer constraint. Appraising structural interpretations using seismic data theoretical elements modeste irakarama 1, paul cupillard, guillaume caumon1, paul sava2, and jonathan edwards abstract structural interpretation of seismic images can be highly subjective, especially in complex geologic settings.
Five lines of 2d seismic data from lokichar basin were interpreted. Amplitude interpretation is then very effective in reducing risk when selecting exploration and production drilling location. Mechanostratigraphy vs structural style interpretation strategy workstation tips. Basics of seismic interpretation linkedin slideshare. Pdf structural interpretation of seismic data in the south of. The 2d seismic data are used for determination of the structural configurations and the tectonic features which is analyzed through the study of interpretation with the available geologic data, in which the geo seismic depth maps for the main interesting tops kareem, nukhul, matulla, raha and nubia formations are represented. 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 many. The successful student will understand the basic principles of seismic reflection data and will be able to interpret. Graham and trotman seismic reflection interpretation has been well served with texts in recent years, but this book is notable in presenting plenty of casehistory material. Fault interpretation in seismic reflection data digital. After 3d migration, a 3d data volume is suitable for derivation of the 3d subsurface geological model. This requires the meaningful recognition of the faults within the proper geological context of the area. Appraising structural interpretations using seismic data theoretical elements modeste irakarama 1, paul cupillard, guillaume caumon1, paul sava2, and jonathan edwards abstract structural interpretation of seismic images can be highly subjective, especially in. Kinematic forward modeling and interpretation of faults in 3d.
The study was carried out to overcome this problem by incorporating 3d seismic data interpretation and well data to develop 3d static model that would make the data more reliable. Seismic facies analysis and structural interpretation of the sandakan subbasin, sulu sea, philippines k. Atlas of structural geological interpretation from seismic. Seismic structural analysis atlas of structural geological. Based on the well to seismic ties two horizons were identified in the seismic sections. Structural mechanics to seismic interpretation technical content the course consists of 3 days of workshop based material, day 1 fault zone processes, day 2 introduction to geomechanics, day 3 structural interpretation of seismic data uncertainty in seismic interpretation and attribute analysis. Data analysis and interpretation was done using smt. Stratigraphic analysis was carried out with the well logs and 2d seismic data by using principles of sequence stratigraphy while structural interpretation was done with aid of the seismic data to produce polar plots for the different structural trends. For example, we can examine vertical sections in inline, crossline, or any arbitrary direction, as well as horizontal sections, namely, time slices. Seismic interpretation requires understanding of structural development and its interrelation with the stratigraphic system. The main data used in this study includes a 3d seismic grid augmented by a few wells and outcrop data from the basin margins.
Variability of reflections indicating stratigraphy, fluids and reservoir fabric. Seismic interpretation, niger delta, hydrocarbon, growth faults, horizons. Interpreting seismic profiles in terms of structure and stratigraphy. Because of the completeness of data within that volume, the interpreter has more information than he would from the analysis of a 2d seismic data set. Other data sets, such as well and potential field data, are also used to unravel the geologic structure and history, most commonly to support reflection seismic data. This publication is the definitive, and now classic, text on the subject of interpretation of 3d seismic data.
Conceived in 1979 and first published in 1986, the book helps geoscientists extract more information from their seismic data and improve the quality of their interpretations. Ppt structural interpretation of seismic data kamal. The basis of seismic structural analysis is structural interpretation of seismic data. Structural interpretation of seismic data of abu rudeissidri. Advanced seismic interpretation is a course designed for graduate students. 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. A seismicstructural interpretation, on the identification. Because rocks are opaque, it is very difficult to see.
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