It is rare that the correctness or incorrectness of an interpretation can be ascertained, because the actual geology is rarely known in enough detail. Structural interpretation of seismic reflection data. Basic theory of seismic waves traveling through the earth and how they interact with earth materials and interfaces. Seismic basics in 5 pages university of saskatchewan.
Seismic data consists of a series of recorded wiggle traces that describe a set of echoes from interfaces between rock layers in the subsurface that have. Base map of a 2d seismic survey 8 isochron map of reflector. Seismic interpretation, whether for hydrocarbon exploration or geotechnical studies, is the determination of the geological. Introduction to seismic interpretation rps training. An introduction to seismic interpretation pdf free download. 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. In addition to providing excellent structural images, the dense sampling of a 3d survey makes it possible to map reservoir quality and the distribution of oil and gas.
The course consists of lectures on fundamental topics including basics of petroleum geology, seismic response. The course is designed for geophysicists, geologists, geology engineers, or students who are interested in gaining or deepening practical knowledge about 2d and 3d seismic interpretation and its uses in the oil industry or other industries where knowledge and visualization of subsurface is important. Seismic interpretation, whether for hydrocarbon exploration or geotechnical studies, is the determination of the geological significance of seismic data. Simply defined, seismic interpretation is the science and art of inferring the geology at some depth from the processed seismic record. The narrow bands of low coherency values that extend across this time slice are created by. Because ive assumed that readers are familiar with basic concepts and. Seismic interpretation is the thoughtful procedure of separating these effects. 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. Simply defined, seismic interpretation is the science and art of inferring the. Seismic data consists of a series of recorded wiggle traces that describe a set of echoes from interfaces. Dec 15, 2016 principles of seismic data interpretation m. Seismic displays visualization is key to seismic data analysis 3d displays are mostly done interactively using workstations in this plot. Twodimensional seismic interpretation and petroleum system modelling of the hammerfest basin was done in order to understand the petroleum system and effects of uplift and subsidence on. Lesson 11 basics of seismic interpretation youtube.
All interpretation projects include a number of tasks which must be completed in order to meet project objectives. Fred schroeder, retired from exxonexxonmobil presented on august 3, 2017. 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. This chapter covers the basics of 3d seismic technology, but does. This chapter covers the basics of 3d seismic technology, but does not consider 2d seismic technology involving surfacepositioned equipment. Five lines of 2d seismic data from lokichar basin were interpreted. The research involves basic steps required for 2d and 3d land seismic data interpretation both by hand and workstation, and how it can be successfully utilized in.
In addition to providing excellent structural images, the dense. Isochron two way time 9 average velocity map of reflector. This 2d and 3d seismic interpretation training seminar will focus on reflection seismic, one of the fundamental ways of imaging the subsurface from a geological perspective. Data acquisition and processing with emphasis on its potential impact on interpretation. Introduction to the methods of acquisition and processing of seismic reflection data. Pdf the study of opendtect seismic data interpretation and. Interpreting seismic profiles in terms of structure and stratigraphy. Every point on the wave front is a source of a new wave that travels out of it in the form of spherical shells. Pdf twodimensional seismic interpretation and petroleum. Majid k, institute of geology and geophysics, chinese. Manual interaction is reduced to the selection of the number.
Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. 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. Chapter 11 structural interpretation of seismic reflection data. The seismic wavelet starts as the pulse of seismic energy, which, generated by the energy source, travels down through the earth, is reflected and travels back up to the surface receivers carrying the geological information with it.
To be effective, it is necessary to teach geologists and engineers a bit of geophysics, and geophysicists and engineers a bit of. Aug 31, 2017 this feature is not available right now. Formerly, a book, now available on cdrom, this title was written to be an introduction to the geologic interpretation of seismic data. The seismic data written to tape in the dog house, whether on land or at sea, are not ideal for interpretation. Seismic data interpretation and evaluation for hydrocarbon. Depends on changes in velocity, density, and poissons ratio i. 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. Pdf i know this time in literature kohat basin is most complex area. See mathematical details in the seismic basics in 5 pages on page 5. Seismic interpreters can be geologists, geophysicists, and even engineers. 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. Principles of 3d seismic interpretation and applications. Currently construction of the underground research facility, onkalo, is going on at the olkiluoto site. Seismic attribute and petrophysicsassisted interpretation.
Innovative petrotech solutions, inc principles of 3d seismic interpretation and applications instructor. A seismic recording system comprises a sensor or receiver that converts the seismic wave into an electrical signal, an analogdigital converter and a recorder. Basic seismic interpretation procedure was applied to a 2d seismic data set. Vertical axis is the twoway reflection travel time, horizontal axes give the collocated sourcereceiver coordinates, color represents reflection amplitudes the colorcoded upper surface is the water bottom. This course provides entrylevel training in seismic interpretation and serves as a foundation for intermediate and advanced geophysics seismic courses. It is the criteria observed on seismic section of the. Recognize the importance of seismic interpretation in a business context. The lesson uses the basics seismic reflection principles, and allows the student to apply them to interpret a geologic framework, conduct a data analysis. This course provides entrylevel training in seismic interpretation and serves as a foundation for intermediate and. This is referred to as twodimensional or 2d seismic data. Graham and trotman seismic reflection interpretation has been well.
Data analysis and interpretation was done using smt. This reduces the illustrators time con suming manual work for tasks such as drawing deformed textures. Geophysicists and geologists who are already familiar with 2d seismic exploration fundamentals will find this course useful to expand that knowledge to 3d. The relationship between acquisition, processing, and interpretation of seismic data is discussed here, since these three processes interrelate and complement each other. The study of opendtect seismic data interpretation and visualization package in relation to seismic interpretation and visualization models article pdf available november 2017 with 1,035 reads. Geophysicists and geologists who are already familiar with 2d seismic exploration fundamentals will find this. Integrate well log data into seismic interpretation.
An illustration showing the importance of using available information in seismic interpretation, such as well data and initial 2d seismic data. To create an accurate picture of the subsurface, we must remove or at least minimize artifacts in these records related to the surface upon which the survey was performed, artifacts related to the instrumentation and procedure used, and noise in the data obscuring the subsurface image. All seismic data is subject o interpretation, and no two experts will interpret. Seismic rays are used instead of the wave front to describe the wave propagation. Seismic interpretation training course petroskills si1. Seismic interpretation an overview sciencedirect topics. Oct 15, 2016 basics of seismic interpretation slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The seismic wavelet starts as the pulse of seismic energy, which, generated by the energy source, travels. Basics of seismic interpretation incorporated research. The sequence in which these tasks are performed is commonly referred to.
If you continue browsing the site, you agree to the use of cookies on this website. Vertical axis is the twoway reflection travel time. Geophysicists specialized in either data acquisition, data processing, or interpretation, and who wish to broaden their understanding of the other disciplines, will also benefit from the course. Seismic 2d reflection processing and interpretation of. Introduction seismic interpretation and subsurface mapping are key skills that are used commonly in the oil industry this teaching resource introduces the basic principles of seismic interpretation and then, if time permits, they can be applied in a practical exercise the resource dovetails with the a level geology specifications 3 2. N004 the essentials of rock physics for seismic amplitude interpretation. Chasing density an introduction to seismic acquisition.
A seismic interpretation study should access the following data sets 2d or 3d seismic data cube. The study of opendtect seismic data interpretation and visualization package in relation to seismic interpretation and visualization models article pdf available november 2017 with. Abdelaziz assistant lecturer, geology department, faculty of science helwan university. Basic geophysics, seismic fundamentals and 3d seismic exploration. Seismic attributes seismic interpretation often relies on. Pdf the study of opendtect seismic data interpretation. An overview of the seismic analyzer can be seen in.
Four case studies make up almost the entire last third. All modern seismic interpretation software can perform the numerical transform that converts 3d seismic wiggletrace data into a 3d coherency volume. It is the criteria observed on seismic section of the waveform, which is the seismic arrival of a reflection, and can be recognized on successive traces, perhaps with small changes in arrival time from trace to trace. The sequence in which these tasks are performed is commonly referred to as an interpretation work flow. To serve this purpose, 2d seismic data in segy format was used along with velocity and well. This is the ideal of seismic imaging flat surface and collocated sources. Twodimensional seismic interpretation and petroleum system modelling of the hammerfest basin was done in order to understand the petroleum system and effects of uplift and. The variation in the amplitude of a seismic reflection with angle of incidence or sourcegeophone distance. Seismic stratigraphy interpretation on 2d data regional geo. Pdf 2d seismic interpretation, structural, petrophysical, facies. Apr 15, 2009 until relatively recently, seismic surveys were conducted along a single line on the ground, and their analysis created a twodimensional picture akin to a slice through the earth beneath that line, showing the subsurface geology along that line. The depth structural maps served as the base for the gross depositional environment mapping, whereas the 2d seismic line interpretation is used for the 2d. Well data are gotten from rock samples and measurements at depth from a.
A horizon interpreted on an unmigrated 2d seismic section can be migrated by. Interpreting and illustrating 2d seismic data cgtuwienacat. Pdf first steps in seismic interpretation khaled magdy. Introduction seismic interpretation and subsurface mapping are key skills that are used commonly in the oil industry this teaching resource introduces the basic principles of seismic.
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