P3 1,2department of geology, university of port harcourt, port harcourt, nigeria 3 department of petroleum engineering, nigerian agip oil company, port harcourt, nigeria abstract. Udoh 1,2department of geology, university of port harcourt, port harcourt, nigeria. Sequence stratigraphy hierarchy and the accommodation. Sequence stratigraphic interpretation of kafe1 field. High resolution sequence stratigraphy correlation and sedimentary model of turbidites. Sequence stratigraphy is a working methodology that. The niger delta is situated in the gulf of guinea on. Despite its wide use, sequence stratigraphy has yet to be included in any stratigraphic code or guide. For this study research, corel draw x6, corel photopaint, dn2 microscopy.
Retrogradation backstepping of shoreline deposition cyclical sedimentation progradation is a type of regression not all regressions involve progradation retrogradation occurs during transgression not all transgressions involve retrogradation. In the case of sequence stratigraphy, the depositional sequence is defined as a relatively conformable succession of genetically related strata bounded by unconformities and their. The innovation and refinement of the techniques and concepts of sequence stratigraphy has been one of the most exciting and profound developments in geology over the past thirty years. The american association of petroleum geologists is an international organization with over 38,000 members in 100plus countries. Stratigraphy and petroleum plays of the late to middle oligocene sediments in the xy field, onshore niger delta basin, nigeria. Seismic stratigraphy has now become one of the standard tools of the geoscientist, and there is a pressing need for an introductory text on sequence stratigraphy. Pdf a sequence, as originally defined by sloss and colleagues, was a stratigraphic unit bounded by subaerial unconformities. Even though the physical dimensions of the outcrop might be fairly. American association of petroleum geologists bulletin 73, 125142.
Dont miss the aapg haynesville playmaker forum, april 26 in houston, tx aapg and its sister organization, sepm, offer a wide array of informational and instructional. Stratigraphic sequence definition of stratigraphic sequence. Lithostratigraphy sequence stratigraphy sea level and sediment supply consequences of changes in sea level types of sequences. Fluvial sequence stratigraphic analysis of oligomiocene. Through sequence stratigraphy, widelyseparated sediments that occur between correlatable unconformities could be compared with each other. The technique has proved to be an invaluable tool for improving stratigraphic analyses in both clastic and carbonate settings. Sequence stratigraphy deals with genetically related sedimentary strata bounded by unconformities.
Hence the definition that sequence stratigraphy is the study of rock relationships within a timestratigraphic framework of repetitive, genetically related strata bounded by surfaces of erosion or nondeposition, or their correlative conformities posamentier et al. Geology 3200 chapter 12 sequence stratigraphy flashcards. Sequence stratigraphy study and analysis of groups of sedimentary. Multiple data sets are integrated for this purpose, and insights from several disciplines are required fig. Sequence stratigraphy is a systematic way of looking at well established and familiar stratigraphic concepts such as eustatic cycles, transgression and regression, diachroneity, and progradation, retrogradation and aggradation. Sequence stratigraphic framework of the paradisefield. Even though widely popular among all groups interested in the analysis of sedimentary basin fills, both in academia and in the industry, sequence stratigraphy is yet a difficult undertaking due to an overwhelming jargon and the persistence of conflicting approaches as to how the sequence stratigraphic method should be applied to the rock record. Posamentier exxon production research company houston, texas and p. Eaes 35012 9 sequence stratigraphy a depositional sequence is a stratigraphic unit bounded at its top and base by unconformities or their correlative conformities, and typically embodies a continuum of depositional environments, from updip continental to downdip deep marine a relative sealevel fall on the order of tens of meters or more will lead to a basinward. Free web tutorials sequence stratigraphy, tutorials carbonate petrology, seismic interpretation sequence stratigraphy exercises lower cretaceous south africa, seismic interpretation sequence stratigraphy exercises bahamas miocene, seismic interpretation sequence stratigraphy exercises lower cretaceous alaska, clastic outcrop interpretation sequence stratigraphy exercises of bookcliffs. Sequence stratigraphy and evolution of the miocene to. Architecture and genesis of floodingsurface bounded depositional units.
Chakrabarti kdmipe, ongc, dehradun summary the middle to late eocene kopili formation is an important source and reservoir for hydrocarbons in the dhansiri. A sequence, as originally defined by sloss and colleagues, was a stratigraphic unit bounded by subaerial unconformities. Vail riceuniversity, houston, texas it is important to establish the fundamental concepts of sequence stratigraphy and to define terminology critical for the communication of these concepts. Concepts in stratigraphy stratigraphy basic concepts lithostratigraphy sequence stratigraphy sea level and sediment supply consequences of changes in sea level types of sequences biostratigraphy other types of stratigraphy basic principles steno 1669 principal of original horizontality sediments deposited as essentially horizontal beds. This paper demonstrates that integration of sequence stratigraphy and diagenesis is possible because the parameters. Higher up in the swquence, an avulsion node sare seen in the northern parts of the area,from which multiple.
Usually occurs when there is a relative rise in sea level produced by subsidence andor eustatic sealevel rise, and the rate of sediment influx is sufficient to maintain the depositional surface at or near sea level i. This occurs when the mass balance of sediment into the delta is such that the volume of incoming sediment is less than the volume of the delta that is lost through subsidence, sealevel rise, andor erosion. As a result, none of the examples deal with topics related specifically to cores, well logs, or most significantly, seismic. It was generally assumed that conclusions drawn from the study of. Principles of sequence stratigraphy octavian catuneanu. Reservoir geology and sequence stratigraphy of deep water sediments, offshore depobelt, niger delta, nigeria matthew o.
Sequence stratigraphy is methodology for the analysis of genetically related packages of sedimentary strata that was initially developed in the 1970s by researchers at exxon. Sequence stratigraphic framework and application to the. The dip section sequence stratigraphy of the paradisefield, niger delta, nigera. Sequence stratigraphy material for this chapter are mainly from the following articles.
Sequence stratigraphy is the subdivision of the stratigraphic record on the basis of bounding discontinuities. This occurs when the mass balance of sediment into the delta is such that the volume of incoming sediment is greater than the volume of the delta that is lost through subsidence, sealevel rise, andor erosion. At applied stratigraphix we have described over 3 km of core on a cmscale from basins across the globe, as well as both carbonate and shale thinsections. Sequence stratigraphy is useful for analyzing cycles that range, in duration, from the 10 ka to 50 ma scale. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext.
Sequence stratigraphy lamontdoherty earth observatory. Sequence stratigraphy and depositional environment of the. Abstract nigerias search for increased oil and gas reserves requires the discovery of additional petroleum plays using more accurate exploration techniques like sequence. Sedimentology and sequence stratigraphy of a retrogradational. The recurrence of the same types of sequence stratigraphic surface through geologic time defines cycles of change in accommodation or sediment supply, which correspond to sequences in the rock record. Major sequences, hundreds of meters thick, define layers of reservoir and sealing strata formed during episodic progradation and retrogradation of deltaic shorelines.
Studies of outcrops and seismic lines bore out these concepts, which initially were called seismic stratigraphy and first published widely in 1977. Sequence stratigraphy of paralic coalbearing strata. Stratigraphy is the geologic knowledge about the processes by which sedimentary deposits form and how those deposits change through time and space on the earths surface. Such a stratigraphic unit proved to be of limited value because, in most.
This online guide is primarily aimed at the application of sequence stratigraphy to outcrops. Sequence stratigraphy and depositional environment of the kopili formation in the area between borholla and khoraghat, dhansiri valley, south assam shelf salman zaidi and s. Start studying geology 3200 chapter 12 sequence stratigraphy. Published online by the canadian society of petroleum. Integrated quantitative seismic sequence stratigraphic. Sequence stratigraphy subcommission on quaternary stratigraphy. Despite its wide use, sequence stratigraphy has yet to be included in any stratigraphic code or.
With the concepts of sequence stratigraphy, iboum et al. For example, the depositional sequence often is interpreted to record progradation basinward shift of facies followed by retrogradation landward shift of facies driven by relative changes in sealevel vail et al, 1977. Two simulations of passive margin depositional sequences are illustrated. Towards the standardization of sequence stratigraphy. In sedimentary geology and geomorphology, the term progradation refers to the growth of a river delta farther out into the sea over time. Depocenters repartition and sequence stratigraphy of the. The applications of sequence stratigraphy are tremendous, from deciphering the earths geological record of local to global changes, to improving the success of economic exploration and production. Sequence stratigraphy emphasizes facies relationships and stratal. Oct 01, 2018 sequence stratigraphy based on wireline logs, cores, and outcrops is entering its fourth decade of mainstream usage in industry and academia. Sequence stratigraphy and palaeogeography of the middle. A sequence stratigraphic framework for robertkiri field strata was constructed by combining data from 20 well logs and a seismic volume spanning 1400 km2. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
L2 stratigraphic concepts free download as powerpoint presentation. A maximum flooding surface mfs1 separates deposits of the retrograding. The variability of the sequence stratigraphic model with the tectonic setting has not yet been captured in any summary papers or textbooks, and this is arguably one of the next frontiers in sequence stratigraphy. Stratigraphic sequence definition is a chronologic succession of sedimentary rocks. L2 stratigraphic concepts sedimentary rock stratigraphy. Sequence stratigraphic framework and application to the precambrian octavian catuneanu1. The upper assam basin and naga hills, which make up the frontal part of the northern assam arakan thrust belt share a common tertiary stratigraphy. Sequencestratigraphic interpretation of structurally controlled. We offer consulting services in seismic stratigraphy, sequence stratigraphy, sedimentology and geomodeling. Sequence stratigraphy the basics free download as powerpoint presentation. Retrogradation is the landward change in position of the front of a river delta with time. Standardization of sequence stratigraphy catuneanu et al. Depositional environments, age, and sequence stratigraphy of the minjur formation in outcrop and near subsurfacecentral saudi arabia.
The sequence part of the name refers to cyclic sedimentary deposits. The purposes of this association are to advance the science of geology. Request pdf rift sequence stratigraphy conventional sequence. High resolution sequence stratigraphy correlation and. Als retrogradieren oder retrogradation lat retro ruckwarts. L sequence stratigraphy and palaeogeography of the middle jurassic brent and vestland deltaic systems, northern north sea.
Sequence stratigraphy concepts stratigraphy sediment. Sequence stratigraphy in the context of interdisciplinary research. Case study of field x, niger delta kelechi azubuike ijomah1, beka f. In sequence stratigraphic framework, multiple 3d seismic provide important information for the characterization of rimmed shelf edge carbonate buildups, slope failure, and sandstone facies of varying geometry, pattern, and dynamic nature during hst, rst, lst, and tst episodes of carbonate deposition.
Introduction the area of study is located in kafe1 field of the offshore western niger delta, nigeria figs. Sequence stratigraphy was developed as a new method of stratigraphic analysis based primarily on phanerozoic case studies. Sequence stratigraphy, sedimentology and provenance of the upper. Progradation, aggradation and retrogradation of sedimentary units parasequences, see discussion ahead in the text is a. Passive filling and general retrogradation of the system toward top of sequence 7 20 ms above 7a. Sequence stratigraphic framework of the paradise field niger delta, nigeria.
Parasequence sets, progradation, aggradation and retrogradation. Sequence stratigraphy, seismic stratigraphy, biostratigraphy, northern depobelt, niger delta. Sequence stratigraphy american association of petroleum. Sequence stratigraphy of niger delta, robertkiri field. Freeware for analyzing classic stratigraphic problems. Sequence stratigraphy concepts free download as pdf file. Current sequence stratigraphic concepts may clarify the controls on distribution and extents, thickness, and quality of eastern kansas coal seams. In the older sequence stratigraphic literature especially in the 1980s and 1990s, there was considerable discussion of type 1 and type 2 sequences, concepts that have largely since been abandoned or ignored. Sequence stratigraphy hierarchy and the accommodation succession method jack neal. These stratigraphic parameters can influence coal gas content. A 2d simulation software sedpak and a 3d simulation. Pdf sequence stratigraphy emphasizes facies relationships and stratal architecture within a. Albian to cenomanian sequence is characterized by a retrogradation overlying a lowstand progradational pattern. Sequence stratigraphy is the study of sedimentation patterns and facies relationships within a chronostratigraphic.
Sequence stratigraphy hierarchy and the accommodation succession method. Practical sequence stratigraphy was originally published as a fifteenpart series in the canadian society of petroleum geologists monthly magazine, the reservoir, between may 2008 and september 2009. Sequence stratigraphic context of microbial mat features. The purpose of this paper is to present a sequence stratigraphic model for rift basins.
Rift sequence stratigraphy request pdf researchgate. The studied sequence is characterized by a typical backstepping or sourceward retrogradation. Sequence stratigraphy based on wireline logs, cores, and outcrops is entering its fourth decade of mainstream usage in industry and academia. Sequence stratigraphy, kafe1 field, western niger delta, systems tract, well correlation i. Four hundred thinsections obtained from cores and cuttings were examined under standard petrographic microscope. Introduction the concept of sequence stratigraphy has emerged as an import ant exploration tool for hydrocarbon in the niger delta basin fills. Sequence stratigraphy is a useful tool for the prediction of primary depositional porosity and permeability. The current paper is focused on the facies, sedimentary environment and depositional cycles study of the middlelate permian sediments in the south fars zireh gas field, the subsurface section of well zha. Depositional environments, age, and sequence stratigraphy. Jan 04, 2018 sequence stratigraphy is important to all subsurface geologists, and a thorough understanding of the principles can help you with a wide variety of plays, ranging from deep marine clastics, to finegrained clastics shale plays. You must there are over 200,000 words in our free online dictionary, but you are looking for one thats only in the merriamwebster unabridged dictionary.
Sequence stratigraphy dominic emery, keith myers download. Ashton embry for his work in making this series possible. Sequence stratigraphy emphasizes facies relationships and stratal architecture within a chronological framework. Pdf transgressiveregressive tr sequence stratigraphy.
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