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. Quantification of uncertainty in 3d seismic interpretation. Seismic interpretation is the understanding of the subsurface geological formations from seismic data which is collected during the extraction process. Coffeen author of interpreting seismic data workbook. Basic theory of seismic waves traveling through the earth and how they interact with earth materials and interfaces. Course overview structural interpretation of seismic data file. The importance of structural model availability on seismic. To teach and understand better the uncertainties in dealing with incomplete data we need to understand the strategies individual practitioners deploy that make them effective interpreters.
Interpreting seismic data initially i regarded this chapter as one for specialists interested mainly in devising new processes. Geologists and geophysicists that spend most of their time interpreting seismic data on the workstation. Structural interpretation of seismic data from an xy field, onshore. Seismic interpretation reflection seismology geophysics. Reflection seismology or seismic reflection is a method of exploration geophysics that uses the principles of seismology to estimate the properties of the earths subsurface from reflected seismic waves. Seismic interpretation short course applied stratigraphix. Fundamentals of seismic data interpretation and evaluation. 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.
The most significant advantage of 3d seismic data is in the. 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. Interpretation and modelling of pp and ps seismic data. Fault interpretation in seismic reflection data digital. Use of well data for seismic inversion and modeling. Then i realized that in dealing with things that dont seem to work as they are expected to, we are really, for the first time, struggling to contend with. Basics of seismic interpretation incorporated research. 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 james d. The seismic section was then calibrated based on horizons of. Interpretation and modelling of lousana data crewes research report volume 7 1995 221 interpretation and modelling of pp and ps seismic data from lousana, alberta susan l.
Geo expro an intelligent approach to seismic interpretation. For new prospects in any area, seismic data interpretation for hydrocarbon traps is not sufficient, further detail study. Seismic interpretation training course petroskills si1. Seismic interpretation, seismic horizons, volume ren dering, ambient occlusion. Ppt structural interpretation of seismic data kamal. Interpretation of threedimensional seismic data is the definitive, and now classic, text on the subject. How 4d seismic data can be used to impact reservoir management. Structural interpretation of seismic data and inherent. Currently construction of the underground research facility, onkalo, is going on at the olkiluoto site.
This technique was carried out using petrel software. Seismic data onshoreoffshore 2d and 3d interpretation parameters seismic data libraries. Continuity of reflections indicating geologic structure. Interpretation of 3d seismic data has further examples, with case studies, in 3d structural inversion applied to seismic data from offshore indonesia and 3d structural inversion applied to seismic data from the northeast china. The method requires a controlled seismic source of energy, such as dynamite or tovex blast, a specialized air gun or a seismic vibrator, commonly known by the trademark name vibroseis. We investigate how this interpretational uncertainty interlinks with seismic data. Seismic interpretation, structural analysis, and fractal study of the greater ughelli depobelt, niger delta basin, nigeria article pdf available in the leading edge 306. Kinematic forward modeling and interpretation of faults in 3d. A seismic interpretation study should access the following data sets 2d or 3d seismic data cube.
To help you to get started, have a look at this pdf 1. The interpretation of features mapped using a seismic data set is based on acoustic impedance differences of subsurface material. Stewart abstract two orthogonal threecomponent seismic lines were shot by unocal canada ltd. The use of an interactive interpretation workstation is a common way to deal with large 3d data volumes. The transmitted acoustic energy is reflected from boundaries between mediums of different acoustic impedances e. The interpretation of seismic reflection data is the fundamental method for determining the geometry and displacement of faults in the subsurface at lithospheric to reservoir scales e. The data has geological structures to interpret and three horizons to pick. Seismic interpreters can be geologists, geophysicists, and even engineers. A towed seismic source emits acoustic energy at regular intervals. Moreover, an interactive environment is versatile in viewing the 3d data volume. Familiarity with geological terminology will be helpful.
Seismic 2d reflection processing and interpretation of. Structural interpretation of seismic data in the south of zindapir area, sulaiman fold belt, pakistan. Basics of seismic interpretation linkedin slideshare. 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. Structural interpretation from seismic data is indeed a difficult endeavor. Seismic volume visualization for horizon extraction. Whether you are an early career geoscientist wanting to learn a systematic approach to seismic interpretation or an experienced professional wanting to learn some of the latest techniques to have emerged in structural geology and seismic stratigraphy, this is the course.
In this study, the hydrocarbon potential of xyfield in onshore. This would be a great textbook for an introduction to seismic interpretation course that focuses on the geology side, or a great reference manual for geoscientists or perhaps even engineers who are working with seismic data probably in the petroleum industry, but. The rio del rey basin is one of the more productive basin of the gulf of guinea. 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. The basic concepts and workflows for timelapse seismic interpretation and integration with geological and production data. For example, we can examine vertical sections in inline, crossline, or any arbitrary direction, as well as horizontal sections, namely, time slices. Studies for acceptance, a thesis entitled acquisition, processing, and interpretation of pp and p s 3d seismic data submitted by glenn allen larson in partial fulfilment of the requirements of the degree of master of science. Well data are gotten from rock samples and measurements at depth from a wellbore. In the two preceding stages data acquisition and processing, reflected waves were first generated then processed to give the stacked seismic sections or data volumes in a form ready for the concluding exploration stage which is the data interpretation.
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. Softwares interpretative analyses of cdp gathers, nmo stack, fk filtering deconvolution and migration. Practical seismic interpretation pdf free download. In year 2001 olkiluoto was selected for the site of final disposal. To be effective, it is necessary to teach geologists and engineers a bit of geophysics, and geophysicists and engineers a bit of. 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. The research methodology involved interpretation of 3dseismic data.
Interpretation of the seismic data also reveals possible gas flow associated with permeable normal faults. Simply defined, seismic interpretation is the science and art of inferring the geology at some depth from the processed seismic record. Structural geology in seismic interpretation by shankar mitra, university of oklahoma. The structural interpretation of the seismic data is presented in figures 4 and 5.
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. Seismic interpretation, niger delta, hydrocarbon, growth faults, horizons. Seismic interpretation is the thoughtful procedure of separating these effects. Seismic interpretation free download as powerpoint presentation. Variability of reflections indicating stratigraphy, fluids and reservoir fabric. Coffeen is the author of interpreting seismic data workbook 4. Recent advances in timelapse geophysical technology. Processing, inversion and interpretation of seismic data. Interpretation of seismic reflection data springerlink. Characteristics and processing 500 samples per second per trace 20,000 traces per shot, every 10 seconds up to 160 shotskm 2, 100 2,000km 2 per survey 45 surveys being processed at any one time 30 separate steps in processing each survey. Data analysis and interpretation was done using smt kingdom suite vers 8. M42 interpretation of threedimensional seismic data. Deepwater seismic interpretation this course addresses the problem of accurate seismic interpretation in deepwater and the delicate construction of seismic maps in the deepwater realm. Structural interpretation of seismic data from an xy field.
Pdf seismic interpretation, structural analysis, and. Based on the well to seismic ties two horizons were identified in the seismic sections. Whether or not automated interpretation of seismic data using ai is a desirable or even an achievable goal we will not be successful unless we utilise technology to more effectively augment our human cognitive abilities to convert geophysical data into an accurate understanding of the subsurface. Advanced seismic interpretation is a course designed for graduate students. 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 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. This would be a great textbook for an introduction to seismic interpretation course that focuses on the geology side, or a great reference manual for geoscientists or perhaps even engineers who are working with seismic data probably in the petroleum industry, but also in academia, or the environmental industry. 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. Oct 15, 2016 basics of seismic interpretation slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Acquisition, processing, and interpretation of pp and ps. How 4d seismic data have been applied in a number of case studies. The interpretation process involved picking and tracing of horizons and faults of interest from the vertical seismic displays of the seismic lines.
It is intended to all petroleum professionals involved in exploration and production, geophysicists, geologists, rock physicists, reservoir engineers and. Interpreting seismic profiles in terms of structure and stratigraphy. Understand the seismic process, interpret seismic sections, develop a geologic model, and prepare maps. Article pdf available in journal of himalayan earth sciences volume 48 12015. Pdf structural interpretation of seismic data in the. Principles of 3d seismic interpretation and applications. If you continue browsing the site, you agree to the use of cookies on this website. The drilling team can also use the seismic data to interpret the structural models beneath the earths surface. Mechanostratigraphy vs structural style interpretation strategy workstation tips. Three different conceptual models were adopted by participants, constrained by initial observa tions of the seismic data.
Seismic interpretation is the third and last stage in the seismic exploration project. Interpretation on each line should proceed from wellimaged, wellconstrained portions of the line toward areas of poorer constraint. After 3d migration, a 3d data volume is suitable for derivation of the 3d subsurface geological model. 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.
The two horizons in the inline seismic section occurred at the levels of 2120ms. The seismic data were checked for quality to prevent interpretation pitfalls. Basics of seismic interpretation slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Five lines of 2d seismic data from lokichar basin were interpreted. Robert stewart, department of geology and geophysics. Geologists, geophysicists, and engineers who want to use seismic data for petroleum exploration andor production. Introduction to the methods of acquisition and processing of seismic reflection data. Then i realized that in dealing with things that dont seem to work as they are expected to, we are really, for the first time, struggling to contend with reality, not with what theory predicts. This interpretation basis for the science is fundamental at all levels. Seismic data interpretation basics to advanced 6 days, 1520 february, 2016 gujarat energy research and management institute organizes a six day comprehensive course on seismic data interpretationbasics to advanced gujarat energy research and management institute germi an iso 9001. Fast, accurate structural interpretation workflow that reduces interpretation uncertainty and delivers a confident, validated structural framework of the subsurface request more info tectonic and depositional relationships can be understood through interactive 2d seismic reconstruction structural flattening, based on geomechanical principles.