This comprehensive book deals primarily with reflection seismic data in the hydrocarbon industry. It brings together seismic examples from North and South America, Africa, Europe, Asia and Australia and features contributions from eleven international authors who are experts in their field. It provides structural geological examples with full-color illustrations and explanations so that students and industry professionals can get a better understanding of what they are being taught. It also shows seismic images in black and white print and covers compression related structures. 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. It provides extensive coverage of seismic expression of different geological structures, faults, folds, mobile substrates (shale and salt), tectonic and regional structures, and common pitfalls in interpretation. The book also includes an un-interpreted seismic section for every interpreted section so that readers can feel free to draw their own conclusion as per their conceptualization. Provides authoritative source of methodologies for seismic interpretation Indicates sources of uncertainty and give alternative interpretations Directly benefits those working in petroleum industries Includes case studies from a variety of tectonic regimes Atlas of Structural Geological Interpretation from Seismic Images is primarily designed for graduate students in Earth Sciences, researchers, and new entrants in industry who are interested in seismic interpretation.
The profiles recorded over the Lhasa terrane include reflections interpreted as marking a large, crustal-scale duplex (minimum shortening of 40 km and thickening of 14 km) within the basement. A steeply, north dipping reflection may mark the Zangbo suture at lower crustal depths, in which case, very little Indian crust has extended beneath the Lhasa terrane. If these interpretations are correct, then they support plateau formation models emphasizing internal crustal shortening but with decoupling and underthrusting of India's mantle-lid.
Hydrocarbons are very much important for the economy of any country. Even on the smaller scale hydrocarbons play a wide role in our daily life. Geophysical methods are the most widely used methods in the exploration of hydrocarbons; especially reflection seismology has a great importance in this regard. Seismic method plays an important role in the search of hydrocarbons. It is the leading exploration technique used now-a-days. This study would highlight the role of seismic method in exploration geophysics. In order to carry out this study, seismic data of Meyal area located in central Potwar is used. Objectives of my Work: Identification of seismic reflectors on the basis of well tops and general stratigraphic column. Preparation of time and depth sections. Preparation of time and depth contour maps to confirm the presence of structures (Faults, Anticlines etc.) in the study area. Seismic attribute analysis to confirm the Seismic interpretation. Petrophysical interpretation to find the probable hydrocarbon saturated zones in the study area.
This book is written for advanced earth science students, geologists, petroleum engineers and others who want to get quickly ‘up to speed’ on the interpretation of reflection seismic data. It is a development of material given to students on the MSc course in Petroleum Geology at Aberdeen University and takes the form of a course manual rather than a systematic textbook. It can be used as a self-contained course for individual study, or as the basis for a class programme. The book clarifies those aspects of the subject that students tend to find difficult, and provides insights through practical tutorials which aim to reinforce and deepen understanding of key topics and provide the reader with a measure of feedback on progress. Some tutorials may only involve drawing simple diagrams, but many are computer-aided (PC based) with graphics output to give insight into key steps in seismic data processing or into the seismic response of some common geological scenarios. Part I of the book covers basic ideas and it ends with two tutorials in 2-D structural interpretation. Part II concentrates on the current seismic reflection contribution to reservoir studies, based on 3-D data.
Implications for 3D Seismic Structural Interpretation, Ellis County, Kansas
Author: Christian Tucci
In a processing flow of 2D or 3D seismic data, there are many steps that must be completed in seismic processing to produce a dataset in suitable for seismic interpretation. In case of land seismic data, it is very essential that the data-processing work flow create and utilize a static time correction to eradicate variations in arrival time associated with changes in the topography and low-velocity near surface geology (Krey 1954). This project utilizes velocity analysis, based on a near-surface reflection, to estimate near surface statics corrections to a datum at elevation of 1300 ft (Sheriff and Geldart 1995, Rogers 1981). Reviewing and Rectifying errors in geometrical aspects of the field seismic data is essential to the validity of velocity analysis and estimation. To this end, geometrical aspects of the data were validated based on spatial aspects of the survey acquisition design and acquired data attributes. The seismic workflow is a conglomeration of many steps, of which, none should be overlooked or given insufficient attention. The seismic processing workflow spans from loading the data into a processing software with the correct geometry to stacking and binning the traces for exportation to interpretation software as a seismic volume. Important steps within this workflow and ones that will be covered in this thesis include; the framework to reverse engineer a survey geometry, dynamic corrections, velocity analysis, and building of a static model to account for the near surface, or low velocity layer. This seismic processing workflow seeks to quality control most, if not all, seismic datasets in hopes to produce higher quality and more accurate three-dimensional seismic volumes for interpretation. The developed workflow represents cost-effective, rapid approach of improving the structural fidelity of land seismic data in areas with rugged topography and complex near-surface velocity variation (Selem 1955; Thralls and Mossman 1952).