Pdf sequence stratigraphy, structural framework and. The trough had been viewed simply as an elongate intracratonic structure of over 1,000 km long and up to 250 km at its widest parts, developed as a purely rift structure in the panafrican mobile belt. Sequence stratigraphic interpretation of kafe1 field. Sequence stratigraphy study of uniabr field in northern delta depobelt of niger delta, nigeria integrated interpretation of wireline logs and high resolution biostratigraphic data has enhanced the subdivision of the stratigraphic column within the uniabr field fictitious oml 4 in the niger delta of nigeria into five sequences and different. The valley which is occupied by up to 600m of marine and fluviodeltaic sediments, that. The marginalshallow marine nkporo group is the basal lithostratigraphic unit of the late campanianmaastrichtian successions of the anambra basin, nigeria fig. The basin is bounded to the south by the niger delta basin hinge line. Stratigraphy and sedimentology of the niger delta in. Seismic stratigraphy and attribute analysis of an offshore. Sequence stratigraphy and structure of the southern coastal swamp of the niger delta, nigeria. The anambra basin is situated west of the lower benue trough and is often considered youngest formation of the benue trough. Geological setting and stratigraphy the nigerian sector of the benin dahomey basin is located in the southwestern nigeria covering three different states, namely, lagos, ogun and ondo figure 3. Sequence stratigraphy analysis of unik field, onshore niger delta, nigeria oluwatoyin khadijat olaleye, department of applied geophysics, the federal university of technology, akure, nigeria. Structural and seismic sequence stratigraphy analysis of.
Sequence stratigraphic interpretation of the cretaceous. The objective of the study are to carry out sequence stratigraphic interpretation of well logs in order to establish correlation of units and its. Stratigraphy, scientific discipline concerned with the description of rock successions and their interpretation in terms of a general time scale. Full text of sequence stratigraphic study and reservoir prediction of ekazy field, greater ughelli depobelt, niger delta, nigeria see other formats international basic and applied research journal vol. Sequence stratigraphic technique was applied to sediments in the xy field, onshore niger delta by integrating six well logs and biostratigraphic data. The conventional stratigraphy of the bida basin has the bida formation at the base in the northern sector, followed successively upward. This basin is very complex, and it carries high economic value as it contains a very productive petroleum system. Reijersselected chapters in geology and sequence stratigraphy in nigeria and three case studies and a field guide. The niger delta basin, also referred to as the niger delta province, is an extensional rift basin located in the niger delta and the gulf of guinea on the passive continental margin near the western coast of nigeria with suspected or proven access to cameroon. Sequence stratigraphic interpretation of parts of anambra. Stratigraphy and sedimentology of the niger delta during the cenozoic, until the middle miocene, the niger delta grew through pulses of sedimentation over an oceanwarddipping continental basement into the gulf of guinea. It was gradually introduced into nigeria since the early nineties. Akata formation is part of the tertiary niger delta akataagbada petroleum system located in the niger delta province, of nigeria at the gulf of guinea, atlantic ocean the upper akata formation is cited to be a primary source rock, providing type iiiii kerogen, and a potential target in deep water offshore and possibly beneath currently producing intervals onshore. Interaction between sealevel changes and depositional.
This paper presents the potential depositional framework of sandstones and unconsolidated sand reservoirs, seals, and traps in the western part of the coastal swamp depobelt of the niger delta basin, nigeria, through integration of sequence stratigraphy and seismic imaging. It provides a basis for historical geology, and its principles and methods have found application in such fields as petroleum geology and archaeology. Geophysical well logs and biostratigraphic data were integrated in order to identify key bounding surfaces, subdivide the sediment packages, correlate sand continuity and interpret the environment. Controls on depositional systems and sequence stratigraphy. Sequence stratigraphy of amansiodo1 well, anambra basin. The methods of seismic geohistory analysis and differential interformational velocity. The book is addressed to anyone interested in understanding and applying the method of sequence stratigraphic analysis, from students to geologists. Stratigraphic report of the middle benue trough, nigeria. Sequence stratigraphy, structural framework and hydrocarbon migration of ariki field, nigeria article pdf available in petroleum exploration and development 431. Pdf insight into sequence stratigraphic and structural.
Sequence stratigraphy based on microfacies analysis. Sequence stratigraphy of the niger delta, delta field, offshore nigeria. Four unconformitybounded thirdorder depositional sequences were identified. The presence of libycoceras dandense howarth in marine facies of the nkporo shale about 35 m below the nkporomamu contact in the lokpaukwuleru section demonstrates that in this area the. Studies published by benkhelil, 1982, guiraud et al. Full text of sequence stratigraphic study and reservoir. Sequence stratigraphic interpretation of kafe1 field, offshore. Sequence stratigraphic studies of xfield, centralcoastal swamp depobelts, niger delta nigeria agraka e. A detailed understanding of sequence stratigraphy can provide a chronostratigraphic framework for stratigraphic predictions, correlation and mapping of sedimentary packages. Structural and seismic sequence stratigraphy analysis of seismic and biostratigraphy data from an onshore field, niger delta, nigeria g. Sequence stratigraphy, kafe1 field, western niger delta, systems tract, well correlation i. Stratigraphy and petroleum plays of the late to middle. Department of geological sciences, nnamdi azikiwe university, awka, anambra state, nigeria. Sequence stratigraphic study and reservoir prediction of ekazy field, greater ughelli depobelt, niger delta, nigeria topics sequence stratigraphy, biostratigraphy, correlation, well logs.
Main criteria for this interpretation are the presence of siliciclastic intercalations, of prominent hardgrounds, of characteristic microfacies including stromatolites and of phreatic. Biostratigraphy, depositional environment and sequence stratigraphy of akata field akata 2, 4, 6 and 7 wells, eastern niger delta, nigeria. It extends northwestward into the niger valley, northward to the jos massif and northeastward into lafia. A sequence stratigraphic model for the group was developed by nwajide and reijers 1996, on the basis of stratigraphic analysis of a composite section located at leru, near okigwe. Sedimentology and depositional environments of the. Sequence stratigraphy and reservoir quality studies were carried out by integrating well logs from five wells, biofacies data, and 3d seismic reflection data of an onshore field, niger delta.
Field observations and petrographic analysis allow a sequence stratigraphic interpretation of the intensely karstified albian mfamosing limestone formation in the calabar flank of the southeastern niger delta. Paleodepositional environment and sequence stratigraphy of. Abstract nigeria s search for increased oil and gas reserves requires the discovery of additional petroleum plays using more accurate exploration techniques like sequence stratigraphy. Nine stratigraphic bounding surfaces including five sequence boundaries sbs dated. Early to middle miocene sequence stratigraphy of well5.
Depositional facies and sequence stratigraphic study in. Eyo department of physics, university of port harcourt, port harcourt, nigeria email address. The sequence stratigraphic analysis based on foraminifera content and lithologic descriptions has revealed the following. Najime department of geology, ahmadu bello university, zaria nigeria abstract a sequence stratigraphic analysis was carried out on ditch cutting samples from amansiodo1 well, anambra basin nigeria. Stratigraphy and sedimentology of the niger delta 7 during the middlelate eocene, sediment was deposited fig. Threedimensional seismic and composite well log data from three wells were used to carry out log sequence seismic stratigraphy and attribute analysis of an offshore field niger delta. Sequence stratigraphy and depositional environments of. Middle cretaceous sequence stratigraphy at the ashaka cement quarry in gongola basin of the upper benue trough, northeast nigeria suleiman u. Facies analysis and sequence stratigraphy of missole. Sequence stratigraphy and structure of the southern. Sequence stratigraphy, seismic stratigraphy, b iostratigraphy, northern depobelt, niger delta. The bida basin is one of nigeria s inland frontier basins.
Udoh 1,2department of geology, university of port harcourt, port harcourt, nigeria. Sedimentology and sequence stratigraphy of the nkporo group campanianmaastrichtian, anambra basin, nigeria sandstones obi, 2000. Sequence stratigraphic, structural and reservoir analytical tools have been employed in interpreting the geology of the eastern coastal swamp depobelt of the niger delta basin. Sedimentology and sequence stratigraphy of the nkporo. Sequence stratigraphy analysis of unik field, onshore. Introduction the conce pt of sequence stratigraphy has emerged as an important exploration too l for hydrocarbon in the niger d elta basin fills. Sequence stratigraphy study of uniabr field in northern delta depobelt of niger delta, nigeria article pdf available in environmental earth sciences 41. Sequence stratigraphy study of uniabr field in northern delta depobelt of niger delta, nigeria clement edem bassey1, thomas a. Sequence stratigraphic interpretation and correlation of the five wells were performed and the chart produced is useful in further deepening the knowledge of the subsurface geology of the niger delta area of nigeria. Sequence stratigraphic interpretation had been carried out in parts of the anambra basin using data from three wells alo1 igbariam1 and ajire1.
The sequence stratigraphic interpretations are useful in further deepening the knowledge of thesubsurface geology of the studiedwell in gongola sub basin, upper benue trough of nigeria. Sequence stratigraphic analysis and reservoir quality. Sequence stratigraphy and controls on sedimentation of the. Paleodepositional environment and sequence stratigraphy of outcropping sediments in parts of southern middle niger basin, nigeria osokpor, j. Sequence stratigraphy of well dx, gongola subbasin, upper. Outcropbased sequence stratigraphic analysis and palynological biofacies were used to define depositional sequences and their bounding surfaces, and build a sequence stratigraphic model for the upper cretaceous succession of the afikpo subbasin. Reservoir geology and sequence stratigraphy of deep water sediments, offshore depobelt, niger delta, nigeria matthew o. Sequence stratigraphy and depositional environments of middlelate miocene sediments in the eastern part of the coastal swamp depobelt, niger delta basin, nigeria. Sequence stratigraphy, structural framework and hydrocarbon migration of ariki field, nigeria ahaneku c v1, okoro a u1, odoh b i1, anomneze d o2, chima k i3, ejeke c f1, okoli i n1 1. The niger delta basin of nigeria is a mature petroleum province having been producing for over half a century. Pdf sequence stratigraphy and structure of the southern. The sequence stratigraphic analysis of unik field located in the coastal swamp area of niger delta basin has been carried out.
Full text of sequence stratigraphic interpretation of the olu oilfield sediments, offshore niger delta, nigeria see other formats international basic and applied research journal vol. Sedimentology and depositional environments of the maastrichtian patti formation, southeastern bida basin, nigeria. Sequence stratigraphic analysis from well logs of an x. P5 1,4,5 department of geology, university of port harcourt, nigeria 2desopadec, warri, nigeria 3 department of geology, anambra state university, uli, nigeria abstract. A sequence stratigraphic study was carried out on ditch cutting samples from well5 oml 34 in the niger delta in nigeria. Shell petroleum development company of nigeria, corporate reprographic services, warri 1996. A new insight into the hydrocarbon systems and prospectivity at deeper stratigraphic. Controls on depositional systems and sequence stratigraphy of the pliocene pleistocene strata of eastern niger delta, nigeria oluwaseyi a. Structurally the delta is subdivided into several depobelts from the northern delta to the deep offshore delta. Agbada formation in delta field figure 1 by relating strata discontinuities observed. The aim of this study is to carry out a sequence stratigraphic interpretation of b24 well in.
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