[PDF] Seismic While Drilling On Odp Holes 1107 And 1105a eBook

Author : F.B Poletto
Publisher : Elsevier
Page : 547 pages
File Size : 32,81 MB
Release : 2004-06-30
Category : Science
ISBN : 0080474349

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The purpose of this book is to give a theoretical and practical introduction to seismic-while-drilling by using the drill-bit noise. This recent technology offers important products for geophysical control of drilling. It involves aspects typical of borehole seismics and of the drilling control surveying, hitherto the sole domain of mudlogging. For aspects related to the drill-bit source performance and borehole acoustics, the book attempts to provide a connection between experts working in geophysics and in drilling. There are different ways of thinking related to basic knowledge, operational procedures and precision in the observation of the physical quantities. The goal of the book is to help "build a bridge" between geophysicists involved in seismic while drilling - who may need to familiarize themselves with methods and procedures of drilling and drilling-rock mechanics - and drillers involved in geosteering and drilling of "smart wells" - who may have to familiarize themselves with seismic signals, wave resolution and radiation. For instance, an argument of common interest for drilling and seismic while drilling studies is the monitoring of the drill-string and bit vibrations. This volume contains a large number of real examples of SWD data analysis and applications.

Author : J.-L. Bouchez
Publisher : Springer Science & Business Media
Page : 356 pages
File Size : 25,65 MB
Release : 2013-11-11
Category : Science
ISBN : 9401717176

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viii debate of those earlier days has been beautifully summarized by H. H. Read in his famous "Granite Controversy" (1957). Read's formulation of the controversy occurred at the time when geochemistry was as a new and powerful tool. The new techniques opened era during which emerging an granites were considered mainly from this new viewpoint. Geochemical signatures have shown that mantle and crustal origins for granites were both possible, but the debate on how and why granites are emplaced did not progress much. Meanwhile, structural geology was essentially geometrical and mechanistic. In the early 70's, the structural approach began to widen to include solid state physics and fluid dynamics. Detailed structural maps of granitic bodies were again published, mainly in France, and analysed in terms of magmatic and plastic flow. The senior editor of this volume and his students deserve much of the credit for this new development. Via microstructural and petrofabric studies, they were able to discriminate between strain in the presence of residual melt or in the solid-state, and, by systematically measuring magnetic fabrics (AMS), they have been able to map magmatic foliations and lineations in ever finer detail, using the internal markers within granites coming from different tectonic environments. The traditional debate has been shifted anew. The burning question now seems to be how the necessary, large-scale or local, crustal extension required for granite emplacement can be obtained.

Author : Bernard Charlier
Publisher : Springer
Page : 749 pages
File Size : 14,88 MB
Release : 2015-05-18
Category : Science
ISBN : 9401796521

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This edited work contains the most recent advances related to the study of layered intrusions and cumulate rocks formation. The first part of this book presents reviews and new views of processes producing the textural, mineralogical and geochemical characteristics of layered igneous rocks. The second part summarizes progress in the study of selected layered intrusions and their ore deposits from different parts of the world including Canada, Southwest China, Greenland and South Africa. Thirty experts have contributed to this update on recent research on Layered Intrusions. This highly informative book will provide insight for researchers with an interest in geology, igneous petrology, geochemistry and mineral resources.

Author : F.P. Agterberg
Publisher : Elsevier
Page : 439 pages
File Size : 18,72 MB
Release : 1990-04-26
Category : Science
ISBN : 0080868541

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This book provides an introduction to recent developments in automated stratigraphic correlation of fossil data, using computer programs for ranking and scaling of stratigraphic events. Mainframes or microcomputers can be used to aid the stratigrapher during data inventory for a region or time period, for construction of a biozonation based on stratigraphic events, (such as the latest appearance datum of a fossil species), and for automated correlation. The book is intended for advanced geology students, research workers and teachers with a background in stratigraphy and an interest in using computer-based techniques for problem-solving.

Author : Paul T. Robinson
Publisher : Geological Survey of Canada
Page : 396 pages
File Size : 16,45 MB
Release : 1987
Category : Science
ISBN :

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Because they are portions of the ancient oceanic lithosphere, ophiolites present a full stratigraphy of the oceanic crust and part of the earth's upper mantle. The Cyprus Crustal Study Project to investigate the Troodos ophiolite was approved in 1980 and was conceived as an integrated petrological, structural and geophysical study, involving both field mapping and diamond drilling. From 1980-82, field studies were started and drilling begun, continuing until March 1985 at three sites, at which 5 holes were drilled. This report presents a series of papers, with abstracts, on various aspects of the Project, including field relations, lithological description, petrography and mineralogy, geochemistry, paleomagnetic and rock magnetic properties, physical properties and other geophysical data, and a summary, data tables and core log description.