Structural interpretation of seismic data pdf

Pdf structural interpretation of seismic data in the. 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. However, conceptual models can create powerful anchors that prevent interpreters from reassessing and adapting their interpretations as part of the interpretation process, which can. Geoscientists and subsurface engineers interested in the structural geology and geomechanics of faults and fractured rock. 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. Basics of seismic interpretation linkedin slideshare. 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 step requires knowledge of interval velocities for each layer, and as such. These threedimensional maps of the wellsite geology can be used to display a visual representation of the subsurface and distinguish separations between geoclines to help identify the most. Stratigraphic traps are generally subtler and difficult to recognize on seismic sections as opposed to structural traps. Seismic interpretation training course petroskills si1. Ppt structural interpretation of seismic data kamal.

Appraising structural interpretations using seismic data. In structural seismic interpretation, seismic data collected from the field is used to build structural, threedimensional maps of the subsurface geology. Interpretation of any data, especially seismic data in petroleum exploration, needs to. Structural interpretation and hydrocarbon potential of. The basis of seismic structural analysis is structural interpretation of seismic data. Intended as a study book for practical structural interpretation of seismic data, this publication includes information on the relation of structural sections to seismic sections, migration to remedy geometric distortions, and the evidences of faulting of seismic lines. Structural interpretation of seismic reflection data. In a seismic interpretation experiment by macrae et al. The structural configurations, as well as the tectonic features of the. Seismic interpretation, whether for hydrocarbon exploration or geotechnical studies, is the determination of the geological significance of seismic data. Psa seismicstructural interpretation, on the identification of possible causes in the formation of gas chimneys in colombias offshore. Static reservoir modeling using well log and 3d seismic.

Seismic data is not 100% convincing if it is to stand alone. 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. Seismic data interpretation and evaluation for hydrocarbon. Data acquisition and processing with emphasis on its potential impact on interpretation. Lithologic interpretation and well correlation were carried out using the well log suites. 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 have a few advantages over other data sets.

Pitfalls in the structural interpretation of seismic data introduction to special section. Pitfalls in the structural interpretation of seismic data william l. Although more information leads to less uncertainty in deriving the geological model, interpretation of abundant data can be exhausting. It is rare that the correctness or incorrectness of an interpretation can be ascertained, because the actual geology is rarely known in enough detail.

Analog modeling as an aid to structural interpretation thomas hearon. On the basis of information from eleven seismic 2d lines and wells data six reflectors well data, four faults were identified and marked. Structural interpretation of seismic data of abu rudeis. Structural mechanics to turnstone seismic interpretation. Rockphysicsassisted welltie analysis for structural. Seismic data interpretation seismic data interpretation. The two horizons in the inline seismic section occurred at the levels of 2120ms. A seismicstructural interpretation, on the identification.

Structural interpretation of seismic data in the south of zindapir area, sulaiman fold belt, pakistan. Data analysis and interpretation was done using smt. Based on the well to seismic ties two horizons were identified in the seismic sections. Reflection seismic data are used to image and understand the subsurface structure of the earth, across scales and tec tonic settings e. Exercises avo amplitude variation with offset interpretation exercise prestack time migration pstm. The 2006 jbc structural seismic design manual illustrates how the provisions of the code are used. Atlas of structural geological interpretation from seismic images pdf is written by achyuta ayan misra, soumyajit mukherjee and now available to download for free. 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. Mechanostratigraphy vs structural style interpretation strategy workstation tips.

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 geoseismic depth maps for the main interesting tops kareem, nukhul, matulla, raha. Structural interpretation of seismic reflection data from. Prior to joining virginia tech in 2001, charney accumulated twenty years of experience as a practicing structural engineer. It allows interpreters to make geological sense of seismic data, which carries inherent uncertainty. In this study, the hydrocarbon potential of xyfield in onshore. Integrating multibeam data in the structural 2d seismic. The importance of structural model availability on seismic. Create a basic stratigraphic framework using seismic stratigraphy.

Chapter 11 structural interpretation of seismic reflection data. Request pdf structural interpretation of seismic data and inherent uncertainties geoscience is perhaps unique in its reliance on incomplete datasets and building knowledge from their. Structural geology in seismic interpretation by shankar mitra, university of oklahoma. Seismic data onshoreoffshore 2d and 3d interpretation parameters seismic data libraries.

This publication is the definitive, and now classic, text on the subject of interpretation of 3d seismic data. The structural interpretation of the seismic data is presented in figures 4 and 5. 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. Structural interpretation of seismic data from an xy field, onshore. Structures associated with compressional stress regimes. We propose several ways to generate a velocity model consistent with migration velocity and with a particular structural interpretation. 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. Advanced seismic interpretation is a course designed for graduate students. Seismic interpretation, niger delta, hydrocarbon, growth faults, horizons. Structural interpretation of seismic reflection data from eastern salt. Interpretation of seismic 2d data reveals that the study area has undergone intense deformation as a consequence of development of thrusts and backthrusts. This comprehensive book deals mostly with reflection seismic data in the hydrocarbon market. It also shows seismic images in black and white print and covers compression related structures.

Identify different structural styles from seismic data. 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. Seismic interpretation is a course designed for undergraduate students. 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. Fault interpretation in seismic reflection data digital. Intergrated seismic stratigraphic and structural analysis. Welltie analysis is a starting point for mapping facies and geology observed at well locations into seismic volumes.

Structural interpretation of seismic data course description the application of structural geological concepts to the interpretation of seismic data is fundamental for correctly reconstructing subsurface structures and for and understanding their geometric and kinematic development. The final step in structural interpretation is timetodepth conversion of time horizons interpreted from the timemigrated volume of data. For new prospects in any area, seismic data interpretation for hydrocarbon traps is not sufficient, further detail study. Interpreting seismic profiles in terms of structure and stratigraphy. Because rocks are opaque, it is very difficult to see. 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. This improves structural interpretation confidence, as well as providing a high resolution present day analogue for guiding development of paleostructure maps. The use of seismic modeling for the geologic interpretation of deep seismic reflection data with low signaltonoise ratios.

In areas with favorable rock properties it is possible to detect hydrocarbon directly by using standard 3d seismic data. Structural balancing vs horizon flattening on structure. 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. Atlas of structural geological interpretation from seismic. He is the author of many publications on the application of structural analysis methods in seismic design. Article pdf available in journal of himalayan earth sciences volume 48 12015. Pdf structural interpretation of seismic data in the south of. Seismic interpretation is the extraction of subsurface geologic information from seismic data. The 2d and 3d seismic data are interpreted to evaluate the subsurface geologic structures in the abu rudeissidri area that occupy the northern central part of the gulf of suez. The use of conceptual models is essential in the interpretation of reflection seismic data. Course overview structural interpretation of seismic data file. Structural interpretation of seismic data from an xy field.

Thus, availability of wells data and core plugs or core logs. Seismic structural analysis atlas of structural geological. The 2000 ibc structuralseismic 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. This has important impacts on the exploration and generation. Five lines of 2d seismic data from lokichar basin were interpreted. Interpretation of lab rockphysics data by numerical simulations chicheng xu.

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