Lower Cretaceous Carbonate Shelf Sequence Stratigraphy, Southeastern Oklahoma PDF Download
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Author: Robert W. Scott
Publisher:
ISBN:
Category : Carbonate rocks
Languages : en
Pages : 49
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Book Description
Author: Robert W. Scott
Publisher:
ISBN:
Category : Carbonate rocks
Languages : en
Pages : 49
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Book Description
Author: Edward Robert Warzeski
Publisher:
ISBN:
Category : Carbonate rocks
Languages : en
Pages : 802
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Book Description
Author: Fred Mason Bullard
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 140
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Book Description
Author: Robert G. Loucks
Publisher: AAPG
ISBN: 0891813365
Category : Carbonate rocks
Languages : en
Pages : 513
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Book Description
Hardcover plus Foldouts
Author: Brian J. Witzke
Publisher: Geological Society of America
ISBN: 081372306X
Category : Science
Languages : en
Pages : 453
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Book Description
Author: Alexander Stoyanow
Publisher:
ISBN:
Category :
Languages : en
Pages : 169
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Book Description
Author: Victoria A. Hunter
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 410
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Book Description
Author: Asmaa Albuloushi
Publisher:
ISBN:
Category : Carbonate minerals
Languages : en
Pages : 498
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Book Description
The interpretation of the sequence stratigraphy cycles and the surfaces in the Middle Minagish formation was the main target in this research. This target was achieved by defining the maximum flooding surfaces and sequence boundaries in a carbonate ramp environment in Umm Gudair field. Four sequence boundaries and four maximum flooding surfaces were determined in the formation by using two wells WUG-A and EUG-A wells. The sequence stratigraphy interpretation was achieved by integrating lithological, biostratigraphic and seismic data. Core data and thin sections were combined with well logs and microfossils to establish the sequence stratigraphic model for three major wells in east and west anticlines and in the saddle area (WUG-A, EUG-A and SA-UG-A well). For the lithological aspect, ten lithofacies were determined by using EUG-A and WUG-A cored and thin sections data. The reservoir consists of peloidal ooidal packstones and grainstones lithofacies. Eight microfossils were identified to determine the age dating, depositional environment and the water depth of the carbonate ramp environment of the study area. Calpionellids, benthic foraminifera and calcareous algae are major microfossils determined in the study area. The microfossils data provides the identification to determine the fourth order cycles, the water depth and the age dating in the middle Minagish formation. The fourth order cycle includes sixteen cycles and the age of these cycles were determined to be around 0.4 My in the early Cretaceous. Calpionellids are the main microfossils utilized for the age dating in middle Minagish formation. The seismic data analysis includes generating synthetic seismograms and calculating different seismic attributes. Ricker wavelets with dominant frequencies of 25 to 40 Hz in addition to the statistical extracted wavelet were generated for the well-to-seismic reflection data tying. Ricker wavelet of 30 to 35 Hz produced the best fit of the synthetic seismogram with the original seismic data. Where the generated synthetic trace using Ricker wavelet of 30 to 35 Hz provide good match with the original seismic traces of peaks and troughs. Another important part in the seismic data is the seismic attributes. The first derivative, the second derivative, the relative acoustic impedance and the envelope are considered seismic attributes and were calculated from the original seismic record. These attributes were used to understand the relationship between different applications of the seismic attributes and determining the maximum flooding surfaces and the sequence boundaries of the study area. The main purpose of using seismic attributes is to observe high contrast seismic reflections. The high contrast between layers refers to the variations of density and sonic logs in addition to the variations in the reservoir properties. The variations in the reservoir physical properties produce the high contrast boundaries that result in the larger amplitude reflections. The maximum flooding surfaces and sequence boundaries are considered the major stratigraphic surfaces separating between these layers. The colored envelope, the relative acoustic impedance and the second derivative of the relative acoustic impedance have the most detected surfaces of the seismic attribute. The MFS4 and the MFS3 are the only surfaces were having the best seismic continuity from east to west anticlines.
Author: Xinggang Christopher Liu
Publisher:
ISBN:
Category :
Languages : en
Pages : 160
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Book Description
The South Florida Basin of the eastern Gulf of Mexico represents a vast, undisturbed carbonate system that extended from the Florida Keys through the Tampa-Sarasota Arch. In South Florida, extensive subsurface data and analogous modern environments provide an opportunity to unravel the evolution of this system from shoreline to shelf-margin. This study examines the changing facies and the pore network of the Latest Aptian-Early Albian Sunniland interval. Stratigraphic results are closely comparable with contemporary carbonate platform studies in the northern Gulf of Mexico. The Sunniland Formation was deposited during a major transgressive-regressive sequence. The Sunniland interval is divided into five third-fourth order, transgress-regressive depositional cycles (S-1 to S-5) in south Florida using sequence analysis of shelf-interior facies succession. In these sequences, facies proportion, faunal composition, and stratal geometries of the shelf-interior are found to be the result of the changing accommodation trends and ocean chemistry. As in the Comanche Platform in South Texas, the detrimental effects of oceanic anoxic event 1B may fundamentally drive the evolution of platform morphology in the eastern Gulf of Mexico as: · Rimmed shelf (crisis phase: S1) · Distally steepened ramp (anoxic/dysoxic phase: S2, recovery phase: S3, S4) · High-angle rimmed shelf (recovery to equilibrium phase: S5). Within this hydrocarbon-producing trend, the lowered sea level at the end of S4 enhances the reservoir quality in the high-energy settings including back-reef debris aprons, tidal shoal-complex and carbonate beach by dissolution. The tight sabkha-tidal flat facies in S5 forms the reservoir seal, whereas the medium-fine crystalline dolomites in S3 may not adversely affect and likely facilitate the migration of hydrocarbon self-sourced from the high TOC, argillaceous mudstone in S2.
Author: Clyde H. Moore
Publisher: Newnes
ISBN: 0444538321
Category : Science
Languages : en
Pages : 389
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Book Description
The 2nd Edition of Carbonate Reservoirs aims to educate graduate students and industry professionals on the complexities of porosity evolution in carbonate reservoirs. In the intervening 12 years since the first edition, there have been numerous studies of value published that need to be recognized and incorporated in the topics discussed. A chapter on the impact of global tectonics and biological evolution on the carbonate system has been added to emphasize the effects of global earth processes and the changing nature of life on earth through Phanerozoic time on all aspects of the carbonate system. The centerpiece of this chapter—and easily the most important synthesis of carbonate concepts developed since the 2001 edition—is the discussion of the CATT hypothesis, an integrated global database bringing together stratigraphy, tectonics, global climate, oceanic geochemistry, carbonate platform characteristics, and biologic evolution in a common time framework. Another new chapter concerns naturally fractured carbonates, a subject of increasing importance, given recent technological developments in 3D seismic, reservoir modeling, and reservoir production techniques. - Detailed porosity classifications schemes for easy comparison - Overview of the carbonate sedimentologic system - Case studies to blend theory and practice
