Download or read book Structural and Seismic Facies Interpretation of Fabi Field Onshore Niger Delta Nigeria written by Kehinde Oluwatoyin Olowoyo and published by Universal-Publishers. This book was released on 2010-09-02 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Niger Delta is a prolific oil province within the West African subcontinent. Exploration activities have been concentrated in the onshore part of this basin, but as the delta becomes better understood, exploration influences are gradually being shifted to the offshore. Although the geology, tectonics and evolution of the Eocene-Pliocene sequence of the Niger Delta are fairly well known, these are expected to increase as new analytical tools and concepts evolve. This work was an integrated structural, seismic facies and stratigraphic study conducted in the Fabi Field, onshore western Niger Delta, and targeted at improving the present understanding of the structural development, sequence stratigraphic history, paleo-depositional environments and hydrocarbon reservoir potential of the field. Five wireline logs, biostratigraphic data, 3-D seismic section, check shot data and core data were analysed and utilized in this study. Well logs were used to determine the different lithologies, system tracts, stacking patterns and reservoir potentials of the field. Sequence stratigraphy and seismic facies were used to identify the reflection packages in order to determine the environment of deposition. Structural and horizon mapping results were used to generate time and depth structural map with the aid of a derived function calculated from the check shot data. The base of these sequences consists of massive and monotonous marine bioturbated shales, which grade into inter-bedding shallow marine fluvial sands with parallel-cross bedding laminations, silt and clays, while the upper part is a massive marine sandstone section. The gross reservoir thickness ranges from 150ft-700ft with net thickness of 20ft-175ft. Sequence stratigraphic analysis revealed that the succession consists of two sequence boundaries, dated 10.35Ma and 10.6Ma and two maximum flooding surfaces, dated 9.5Ma and 10.4Ma. The high percentage of the reflections with low to moderate amplitude/continuity of the parallel/divergent configuration is identified as a feature of delta platform facies, while the sigmoidal-hummoky reflections indicate a slope facies. The system tracts from the log are the trangressive and highstand system tracts, while growth faults(F1), antithetic faults(F3,F4) and synthetic faults (F2,F5,F6,F7) are the identified structures which are typical of the Niger Delta reservoir sandstone. Depositional setting of the Middle-Upper Miocene strata were influenced by fluvial, tidal and marine systems. The up dip areas on the depth structure maps with closure signify possible anticlinal structures where hydrocarbons could be entrapped. These could serve as possible appraisal locations where wells could be sited to optimize the development of the reservoir sands within the field using the structural model generated.
Download or read book Facies Analysis and Interpretation in Southeastern Nigeria s Inland Basins written by Chidozie Izuchukwu Princeton Dim and published by Springer Nature. This book was released on 2021-02-05 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book broadens the reader's knowledge base on lithofacies distribution, facies succession and association, and interpretation of paleo-depositional environments using outcrop-based and measured se¬dimentologic section data integrated with facies and petrographic analyses. Besides, the author also provides step-by¬step workflow that could guide detailed geological field mapping and improve outcrop studies across Middle-Upper Cretaceous (Cenomanian–Campanian) successions of Southern Benue Trough and the lower stratigraphic interval of Anambra Basin, outcropping in Afikpo area of Southeastern Nigeria.
Download or read book Sequence Stratigraphy of Niger Delta Delta Field Offshore Nigeria written by Ajibola Olaoluwa David Owoyemi and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Niger Delta clastic wedge formed along the West Africa passive margin. This wedge has been divided into three formations that reflect long-term progradation: 1) pro-delta shales of the Akata Formation (Paleocene to Recent), 2) deltaic and paralic facies of the Agbada Formation (Eocene to Recent) and 3) fluviatile facies of the Benin Formation (Oligocene-Recent). This study combines a three-dimensional seismic image with well log data from Delta field to describe lithic variations of the Agbada Formation and develop a sequence stratigraphic framework. The 5000-feet thick Agbada Formation in Delta field is divided by five major sequence boundaries, each observed in seismic cross sections to significantly truncate underlying strata. Sequence boundaries developed as mass flows eroded slopes steepened by the structural collapse of the Niger Delta clastic wedge. Basal deposits directly overlying areas of deepest incision along sequence boundaries formed by the migration of large, sinuous turbidite channels. Upward-coarsening sets of inclined beds, hundreds of feet thick, record progradation of deltas into turbidite-carved canyons and onto down faulted blocks. Thinner, more continuous seismic reflections higher within sequences are associated with blocky and upward-fining well-log patterns interpreted to reflect deposition in shoreline, paralic, and fluvial environments. Episodes of structural collapse of the Niger Delta clastic wedge appear to be associated with progradation of Agbada Formation sediments and the loading of underlying Akata Formation shales. Progradation may have been more rapid during third order eustatic sea level falls. Effects of syn-sedimentary deformation on patterns of sediment transport and deposition are more pronounced in lower sequences within the Agbada Formation, and include: 1) incision into foot walls of listric normal faults, 2) abrupt reorientation of channelized flow pathways across faults, and 3) thinning of deposits across crests of rollover anticlines on down thrown fault blocks. Structural controls on deposition are less pronounced within younger sequences and canyon incisions along sequence boundaries are more pronounced, suggesting that the locus of sediment accumulation and structural collapse of the clastic wedge moved farther basinward as accommodation was filled in the area of Delta field.
Download or read book Lithofacies Depositional Environments Stratigraphy Structures and Hydrocarbon Distribution Implication for Hydrocarbon Prospectivity at Deeper Intervals of the Onshore Niger Delta Basin written by Chidozie Dim and published by . This book was released on 2014-12-02 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Master's Thesis from the year 2013 in the subject Geography / Earth Science - Geology, Mineralogy, Soil Science, grade: 1, University of Nigeria (University of Nigeria, Nsukka - Department of Geology, Physical Sciences), course: Petroleum Geology - Earth Science / Geosciences, language: English, abstract: Analytical studies on lithofacies delineation, environment of deposition, stratigraphic framework, structural configuration, hydrocarbon type and distribution in the Middle to Late Miocene sequence of Niger Delta basin, were carried out in the Eastern part of the Coastal Swamp depo-belt using information obtained from 3D regional seismic volume, wireline logs, paleobathymetric and biofacies data across nine fields. This involved analyses and interpretations, aimed at establishing; the main lithofacies units, system tracts, depositional sequences, reservoirs, seals and also the influence of structures on stratigraphy and hydrocarbon trends across several oil and gas producing fields. Facies analyses reveal the occurrence of four lithofacies units. Well log sequence stratigraphic analysis and correlation across these fields indicates that ten major stratigraphic bounding surfaces, five each of sequence boundaries (SB) with ages ranging from 13.1Ma through 8.5Ma and maximum flooding surfaces (MFS) with ages between 12.8Ma and 7.4Ma respectively, were identified and correlated. Four depositional sequences were delineated and stratigraphic flattening at various ages (MFSs) indicates that there is a shift of the depo-center from north to south. Stacking patterns were delineated and interpreted as lowstand systems tract (LST), highstand systems tract (HST) and trangressive systems tract (TST) using their bounding surfaces. The alternation of these systems tracts offers good reservoir sands and source/seal shales for hydrocarbon accumulation. Paleobathymetric maps show generally, that sediments were deposited within neritic through bathyal environments at different times,
Download or read book Quantitative Seismic Interpretation written by Per Avseth and published by Cambridge University Press. This book was released on 2010-06-10 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantitative Seismic Interpretation demonstrates how rock physics can be applied to predict reservoir parameters, such as lithologies and pore fluids, from seismically derived attributes. The authors provide an integrated methodology and practical tools for quantitative interpretation, uncertainty assessment, and characterization of subsurface reservoirs using well-log and seismic data. They illustrate the advantages of these new methodologies, while providing advice about limitations of the methods and traditional pitfalls. This book is aimed at graduate students, academics and industry professionals working in the areas of petroleum geoscience and exploration seismology. It will also interest environmental geophysicists seeking a quantitative subsurface characterization from shallow seismic data. The book includes problem sets and a case-study, for which seismic and well-log data, and MATLAB® codes are provided on a website (http://www.cambridge.org/9780521151351). These resources will allow readers to gain a hands-on understanding of the methodologies.
Download or read book Cool water Carbonates written by H. M. Pedley and published by Geological Society of London. This book was released on 2006 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past decade, work on cool-water carbonates has expanded to become a mainstream research area. Studies on modern and Quaternary deposits will continue to be important; however, there is increasing momentum towards unravelling sediment processes, biota-sediment interactions and diagenetic products in Cenozoic and older cool-water carbonates. Many contributions in this book document Cenozoic and Quaternary carbonates from landlocked (microtidal) water-bodies. These carbonates display important differences in biota and fabric distributions when compared with world ocean examples. Consequently, the scientific community is now better placed to reinterpret pre-Tertiary carbonates where there is a suspicion that they have developed under microtidal conditions. Some papers in the book provide new approaches to interpreting environmental change within macrotidal regimes and others lay firm foundations for future cool-water carbonate diagenetic research. The aim of the book is to illustrate recent international contributions to cool-water carbonates research, with an emphasis on Neogene and Recent case studies. Contributions are divided into three sections: microtidal carbonates from the Mediterranean realm; macrotidal examples from New Zealand, Australia and Mexico; and early diagenetic fabrics.
Download or read book Petroleum Geoscience written by Knut Bjørlykke and published by Springer. This book was released on 2015-05-19 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive textbook presents an overview of petroleum geoscience for geologists active in the petroleum industry, while also offering a useful guide for students interested in environmental geology, engineering geology and other aspects of sedimentary geology. In this second edition, new chapters have been added and others expanded, covering geophysical methods in general and electromagnetic exploration methods in particular, as well as reservoir modeling and production, unconventional resources and practical petroleum exploration.
Download or read book Muds and Mudstones written by Andrew C. Aplin and published by Geological Society of London. This book was released on 1999 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Carbonate Cementation in Sandstones written by Sadoon Morad and published by Blackwell Publishing. This book was released on 1998-01-01 with total page 511 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbonate cements are very common and abundant in clastic sequences. They profoundly influence the quality of hydrocarbon reservoirs and supply important information on palaeoenvironments and the chemical composition and flow patterns of fluids in sedimentary basins. Despite this importance, their distribution patterns in time and space and their geochemical evolution are not yet deeply explored and elucidated. This Special Publication contains 21 review papers and case studies on carbonate cementation in clastic sequences written by invited specialists on the subject. These papers present a wide and deep coverage that enhance our knowledge about carbonate cementation in various clastic depositional environments, tectonic settings and burial histories. The book will be of special interest to researchers, petroleum geologists and teachers and students at the postgraduate level.
Download or read book Oil and Hydrocarbon Spills Modelling Analysis and Control written by R. Garcia-Martinez and published by Computational Mechanics. This book was released on 1998 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of Oil Spill 1998, and deals with advanced theoretical and practical aspects of oil spills in land and water environments.
Download or read book Marine Coastal Eutrophication written by R.A. Vollenweider and published by Elsevier. This book was released on 2016-04-06 with total page 1341 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eutrophication in the transitional marine coastal waters has increased dramatically in many parts of the world, and this evolution has shifted attention to the anthropogenic factor. The problem has become the theme of many conferences and workshops, as well as being given priority in international organizations. This volume has been brought about by the desire to assess both our scientific understanding as well as the means and technologies available to combat the problem of marine coastal eutrophication. It discusses the results of research and surveillance programmes carried out in the last decades, confronting these results with experience gained elsewhere, and reviewing current proposals of what can be done about the problem. This volume will be invaluable to environmental scientists and marine ecologists, as well as to those who wish to resolve the many large-scale environmental problems, specifically marine eutrophication and marine pollution in general.
Download or read book Duty and Desire Book Club Edition written by Anju Gattani and published by . This book was released on 2021-01-27 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: To uphold family honor and tradition, Sheetal Prasad is forced to forsake the man she loves and marry playboy millionaire Rakesh Dhanraj while the citizens of Raigun, India, watch in envy. On her wedding night, however, Sheetal quickly learns that the stranger she married is as cold as the marble floors of the Dhanraj mansion. Forced to smile at family members and cameras and pretend there's nothing wrong with her marriage, Sheetal begins to discover that the family she married into harbors secrets, lies and deceptions powerful enough to tear apart her world. With no one to rely on and no escape, Sheetal must ally with her husband in an attempt to protect her infant son from the tyranny of his family.sion.
Download or read book Geology of the Brent Group written by A. C. Morton and published by Geological Society Publishing House. This book was released on 1992 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Middle Jurassic Brent Group sediments, and their correlatives on the Norwegian Shelf are, in economic terms, the most important hydrocarbon reservoir in NW Europe. In 1971 the Brent Field was discovered by Shell/Esso and tested in 1972 with 1.8 billion barrels of recoverable oil. By 1988 discovered Brent hydrocarbons comprised some 490f the UK's recoverable reserves, totalling 22.5 billion barrels of oil equivalent. Now that the UK Brent Province has reached maturity, this book provides a comprehensive review of the geology and petroleum geology of one of the world's major petroleum reservoirs. With the contents covering exploration history, structural evolution, sequence stratigraphy, sedimentology, diagenests, palynology, hydrocarbon generation and migration, and petrophysics, the book will be of interest to geoscientists in many fields especially petroleum geologists, sedimentologists, petrophysicists and biostratigraphers.
Download or read book Marine Eutrophication written by Michael Karydis and published by CRC Press. This book was released on 2019-09-16 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine eutrophication has been recognized as a global problem with adverse effects on ecosystem’s health and the economies of coastal states. Most conventions regarding marine environmental protection of Regional Seas have given priority to eutrophication and relevant management practices. This book presents a global perspective of eutrophication in most of the Regional Seas, including the legal framework, assessment and management practices. Information on ecosystem’s impact as well as an outline of the methods used for assessing eutrophication is also provided. This volume will be useful to research students, marine scientists and policy makers working in marine environmental management. Key Features: Contributes to the understanding of the eutrophication processes and problems Presents an extensive account of the data analysis methods used for the quantitative assessment of eutrophication Looks the eutrophication status of the main regional seas Provides information on eutrophication politics and measures to mitigate eutrophication
Download or read book Well Logging and Formation Evaluation written by Toby Darling and published by Elsevier. This book was released on 2005-05-26 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: This hand guide in the Gulf Drilling Guides series offers practical techniques that are valuable to petrophysicists and engineers in their day-to-day jobs. Based on the author's many years of experience working in oil companies around the world, this guide is a comprehensive collection of techniques and rules of thumb that work.The primary functions of the drilling or petroleum engineer are to ensure that the right operational decisions are made during the course of drilling and testing a well, from data gathering, completion and testing, and thereafter to provide the necessary parameters to enable an accurate static and dynamic model of the reservoir to be constructed. This guide supplies these, and many other, answers to their everyday problems. There are chapters on NMR logging, core analysis, sampling, and interpretation of the data to give the engineer a full picture of the formation. There is no other single guide like this, covering all aspects of well logging and formation evaluation, completely updated with the latest techniques and applications.·A valuable reference dedicated solely to well logging and formation evaluation.·Comprehensive coverage of the latest technologies and practices, including, troubleshooting for stuck pipe, operational decisions, and logging contracts.·Packed with money-saving and time saving strategies for the engineer working in the field.
Download or read book Vice chancellor on a Tightrope written by Stuart Saunders and published by New Africa Books. This book was released on 2000 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
