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. To help you to get started, have a look at this pdf 1. Significant amounts of carbonate grains and sands accumulated on the platforms and their fringes. The book will also help readers interested in devising new algorithms, software and hardware for interpreting seismic data. Several geological and technical parameters may be related to the noise. Fault interpretation in seismic reflection data digital.
Seismic data interpretation using digital image processing. Structural geology in seismic interpretation by shankar mitra, university of oklahoma. Pdf first steps in seismic interpretation khaled magdy. Starting from the introduction to the seismic methods in chapter 1. 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. Figure 1 depicts a 3d visualized seismic data which exist in a 3d coordinate system.
Interpreting seismic profiles in terms of structure and stratigraphy, an example from lower indus basin pakistan article pdf available january 2016 with 4,406 reads how we measure reads. A seismic interpretation study should access the following data sets 2d or 3d seismic data cube. Applications of the trendmatch attribute for interpreting seismic velocity data. It enables geologists and geophysicists to process, visualize and interpret multivolume seismic data using attributes and modern visualization techniques. Interpreting 2d seismic with the assistance of falcon. Seismic data is collected from subsurface geology and worked through several models to produce useful information. Seaoc oshpd do not intend that the use of this information replace the sound judgment of such competent professionals, having experience and knowledge in the field of practice, nor to substitute for the standard of care required of such professionals in interpreting and applying the results of the seismic data provided by this website. The green area in the northeast corner has a lower value and is interpreted as a. Interpreting 3d seismic data 3d seismic interpretation. Stratigraphic and structural interpretation of seismic sections in lokichar basin by. In a seismic interpretation experiment by macrae et al. This publication is the definitive, and now classic, text on the subject of interpretation of 3d seismic data. In areas with favorable rock properties it is possible to detect hydrocarbon directly by using standard 3d seismic data.
The task of interpreting seismic data requires a broad range of skills and knowledge that must tie information at. It intends to give a full image of the laurentian sub. This might include well log data, production data, pressure data, and other types of geologic, geophysical and engineering 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. Because nearly all modern seismic data are in digital form in order to be stored and analyzed in computers, we need to learn several important concepts about sampled time series such as sampling rate and aliasing. Interpreting seismic profiles in terms of structure and stratigraphy. After 3d migration, a 3d data volume is suitable for derivation of the 3d subsurface geological model. Well data are gotten from rock samples and measurements at depth from a wellbore. The may issue of interpretation features two special sections on seismic geometric attributes and interpretable seismic velocity. The triassic yanchang formation is currently a hot spot for lacustrine shalegas exploration in the ordos basin, china. Seismic data interpretation seismic data interpretation. Find all the books, read about the author, and more. These functions read and write seismic data in standard segy format, read and write well logs in lasformat 2.
Simply defined, seismic interpretation is the science and art of inferring the geology at some depth from the processed seismic record. Because rocks are opaque, it is very difficult to see. Introduction to the interpretation of seismic refraction. Seismic interpretation an overview sciencedirect topics. The drawback of seismic insitu data is their complexity, their noise, and their nonlinear relation to the geology. The geological structure and the earth substructure are apparent.
They use standardized structures to represent seismic data and well data and thus allow simple concatenation of function calls. We can see the synthetic on the middle matches very well with the seismic correlation is 70%. These sediments were deposited on a slowly subsiding margin while sea level was at a much higher level than at present. It helps geoscientists and engineers who are practitioners in this area to both understand and to avoid the potential pitfalls of. Interpreting multicomponent seismic data in the gulf of mexico for shallow sedimentary properties. Interpretation of any data, especially seismic data in petroleum exploration, needs to be conclusive and logically extended to its geological implications, in eval. Along passive margins, successions of marine deposits separated by unconformities are commonly found at elevations above present sea level. The importance of structural model availability on seismic. The base map of the seismic survey is shown in figure 2. The vpvs value determined from a ratio of the pp and ps timethicknesses isochrons surrounding the reservoir. Basin, the south whale basin and west grand banks area, integrating all available data wells, 2d seismic. For new prospects in any area, seismic data interpretation for hydrocarbon traps is not sufficient, further detail study.
In this study, the hydrocarbon potential of xyfield in onshore. Structural interpretation of seismic data from an xy field. Interpreting multicomponent seismic data robert stewart crewes project university of calgary 19th annual crewes sponsors meeting banff alberta nov. The study of opendtect seismic data interpretation and. Whereas substantially horizontal boundaries are readily identified using conventional processing methods based on primary reflections, it has been difficult or impossible to use such methods for locating substantially vertical events or boundaries. Structural interpretation of seismic reflection data.
The rio del rey basin is one of the more productive basin of the gulf of guinea. The data has geological structures to interpret and three horizons to pick. Seismic interpretation of carbonate turbidites in central luconia 83 vertically. The method of the present invention uses secondary reflections to locate. 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. Instead, good interpreters or good interpretation teams try to integrate as many other types of data as possible into their interpretations. To constrain the seismic stratigraphic interpretation to the wellbore data, well to seismic tie is performed. Stratigraphic traps are generally subtler and difficult to recognize on seismic sections as opposed to structural traps. Pdf fault interpretation in seismic reflection data. Ppt structural interpretation of seismic data kamal.
During a sealevel highstand, carbonate growth outstrips accommodation causing the steep platform margins to prograde. Practical seismic interpretation pdf free download. The success of interpreting seismic data set often lies on the richness of information manifests on a visualized data. Pdf geological interpretation of reflection seismic data. As mentioned in chapter 1, and elsewhere in this work, the 3d seismic interpretation does not rely solely on seismic data. 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. 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. 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.
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. This method, which is based on neural information processing, aims at finding unknown relationships in the. A seismicsedimentological study using a newly acquired 3d survey was conducted to advance the interpretation and prediction of. Seismic interpretation of carbonate turbidites in central.
Global technique in seismic interpretation for reservoir detection and characterization. These discontinuities, based on seismic reflection terminations, are indicators of depositional sequences and system tracts formed by one or more of. Seismic interpretation, niger delta, hydrocarbon, growth faults, horizons. Global approach for tying well and seismic data from synthetic. Another possibility of interpreting seismic refraction data is the refractiontomography, which is presented in chapter iv. Coffeen author of interpreting seismic data workbook. Seismic data interpretation and evaluation for hydrocarbon. This multidisciplinary, integrated and practical approach to data evaluation will prove to be a valuable tool for students and young professionals, especially those connected. Three different conceptual models were adopted by participants, constrained by initial observa tions of the seismic data. Stanford libraries official online search tool for books, media, journals, databases, government documents and more. Ca2577128c method for interpreting seismic data using. Pdf this research consists of all these aspects in a brief. This book begins with an introduction that is more philosophical than technical, followed by five chapters on fundamentals of reflection seismic titled seismic response, seismic attributes, velocity, migration, and resolution.
Seismic reflection terminations, also termed lapout, are stratal discontinuities recognized on seismic sections that separate apparently conformable sedimentary units from nonconformable units, forming the basis of seismic sequence stratigraphy. Purchase of an open document does not constitute license for republication in any form, nor does it allow web posting without prior written permission. This book introduces readers to the field of seismic data interpretation and evaluation, covering themes such as petroleum exploration and high resolution seismic data. The scientists of the geophysical analysis project process both newly acquired seismic data, as well as older legacy data. A method for interpreting seismic data using duplex waves is described. Opendtect is an open source software oss system that has been designed for seismic analysis, visualization and interpretation fig. Pdf interpreting multicomponent seismic data in the gulf. Interpreting multicomponent seismic data crewes research report volume 19 2007 5 fig. Provides an easy to understand overview of popular seismic processing and interpretation techniques from the point of view of a digital signal processor. Structural interpretation of seismic data from an xy field, onshore.
Structural delineation and stratigraphic evaluation of proven geological basins are of prime importance for hydrocarbon exploration and exploitation. Interpreting seismic profiles in terms of structure and stratigraphy, an example from lower indus basin pakistan. Basics of seismic interpretation the lesson uses the basics seismic reflection principles, and allows the student to apply them to interpret a geologic framework, conduct a data analysis, prospect for hydrocarbons, and then assess whether the basin should be bid on and provide an economic analysis. Chapter 11 structural interpretation of seismic reflection data. Seismic stratigraphic and quantitative interpretation of.
The data used in the study include wireline logs, checkshot data, 3d seismic sections and base map of the study area. The seismic lines are crosslines shot parallel to the dip direction and. Amplitude interpretation is then very effective in reducing risk when selecting exploration and production drilling location. Data set used for seismic interpretation after the geology of the area to be studied is known, a data gathering process commences. Pdf interpreting seismic profiles in terms of structure. Coffeen is the author of interpreting seismic data workbook 4. The goal is a reduction in exploration and development risk of drilling for. Data available to carry out this research was old secondary data acquired by amoco kenya. The american association of petroleum geology aapg defines seismic interpretation simply as, the science and art of inferring the geology at some depth from the processed seismic record. Basics of seismic interpretation incorporated research. The methods include log analysis, generation of synthetic seismograms, vsp correlation, along with registering, picking, and calculating ratios of the pp and ps sections. Readers will appreciate the exquisite illustrations included with the accessibly written text, which simplify the process of learning about interpretation of seismic data.
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