The development of each being dependent on interplay between sediment supply and subsidence rate. Jan 01, 2017 the niger delta hydrocarbons are thought to have been sourced mainly from the akata shales and subordinately from some of the shale intervals of the agbada formation, bearing land plant material that gave rise to mainly types iii and iiiii organic matter mainly gasprone within an oil window that varied from 9,000 to 14,000 ft. The third cycle, from eocene to recent, marked the continuous growth of the main niger delta. The separation of south america from africa and the first marine incursion led to the deposition of asu river group in the mid albian. Meren field, located offshore niger delta, is one of the most prolific oil producing. The onshore portion of the niger delta is delineated by the geology of southern nigeria and southwestern cameroon tuttle et al.
During the tertiary, the delta built out into the atlantic ocean at the mouth of the niger e samuel okechukwu onyekuru is. The niger delta basin the cenozoic niger delta is situated at the intersection of the benue trough and the south atlantic ocean where a triple junction developed during the separation of the continents of south america and africa in the late jurassic whiteman, 1982. Psintegrated reservoir quality study of deepwater clastic deposits, offshore western niger delta, nigeria c. The niger delta, situated at the apex of the gulf of guinea on the west coast of africa, covers an area of about 75 000 km2. Introductionthe niger delta is one of the worlds largest tertiary delta systems and an extremely prolific hydrocarbon province. It has a subaerial area of about 75,000 km2, a total area of 300,000 km2, and a sediment fill of. Pdf deltas are major depositional centres where processes and. However, the formation of the present modern niger delta. The geology of the niger delta basin has been studied extensively. These tracemetal data, together with the organic geochemistry and physical properties of the oil indicate that the niger delta source rocks contain predominately. The niger delta petroleum system hydrocarbon trapping mechanism is structural traps amplitudes conforming to structure in all reservoirs. Formations in niger delta area, nigeria short and stauble, 1967.
S1 abstract the niger delta, an area of roughly 30,000km2, is experiencing physical development challenges due to poor soil conditions, a situation which has escalated project cost and as a consequence impeded development. Exploration the deepwater niger delta ion geophysical. The onshore portion of the niger delta is delineated by the geology of southern nigeria and southwestern. 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, equatorial guinea and sao tome and principe. The structure of the offshore niger delta geology department. This study has characterized the geomorphic subenvironments of the niger. The niger delta basin is situated on the continental margin of the gulf of guinea in equatorial west africa between latitudes 3 and 6n and longitudes 5 and 8e ehinola and ejeh, 2009. Nov 21, 2017 a the niger delta complex and b section through the continental shelf, slope and rise showing structural domains of niger delta cohen and mcclay 1996 full size image the niger delta basin has area coverage of about 75,000 km 2 and consists of an overall regressive clastic sequence which reaches a maximum thickness of about 12,000 m in the. Regional psdm seismic line ng24500 across the main provinces of the niger delta. Niger delta akataagbada petroleum system of9950h, chapter a. Today, the delta is covered with a dense grid of 2d and 3d seismic data and it has been penetrated by more than 5,000 wells. Jan 01, 1997 cenozoic niger delta the modern delta recent depositional environments and sedimen tary facies in the niger delta described by allen 1965, 1970 have furnished a lithogenetic model that relates facies variations of modem high energy, wavedominated, constructional, arcuatelobate trop ical deltas to depositional process fig.
Niger delta, biostratigraphy, sedimentology, megasequences, cycles 1. Foraminifera biostratigraphy and paleoenvironment of well. Niger delta petroleum systems, nigeria request pdf. American association of journal of environme nt and earth sci ence. Niger delta continental slope, deepwater deposits, turbidite. Sequence stratigraphy analysis of unik field, onshore. The onshore portion of the niger delta province is delineated by the geology of southern nigeria and southwestern cameroon. Another stage of formation of the niger delta was in campanianmaastrichian time with the deposition of the proto niger sediments short and stauble, 1967. Kurowska university of silesia department of fundamental geology sosnowiec poland abstract niger delta sedimentary basin is a large arcuate delta of the destructive dominated wave type that has been explored for oil and gas and exploited since 1958. It is situated on the west african continental margin at the apex of the gulf of guinea, which formed the site of a triple junction during continental breakup in the cretaceous.
Integrated subsurface evaluation of doyin field, shallow. Bonga oil field is located 120km 75mi southeast of the niger delta, nigeria. Chapter 9 the niger delta basin cheap genuine keys. The values of these parameters are not readily available for a typical niger delta reservoir system, hence requiring some authors to use approximate values from reservoirs in europe and america with similar characteristics as that of the niger delta basin, or standard values which may sometimes lead to. The coastal sedimentary basin of nigeria has been the scene of three depositional cycles. Structural to stratigraphic framework of banghan field. Niger delta province, nigeria, cameroon, and equatorial guinea, africa by michele l. Chapter b assessment of undiscovered petroleum in the tertiary niger delta akataagbada petroleum system no. The first began with a marine incursion in the middle cretaceous and was terminated by a mild folding phase in santonian time. Aug 14, 2017 shallow offshore niger delta, nigeria. Pdf deepwater niger delta fold and thrust belt modeled. Assessment of undiscovered petroleum in the tertiary niger delta akataagbada petroleum system no.
On the basis of oils and source rocks, source facies variation characteristic of this system has been regionally mapped in the northwestern part of the delta. Niger delta petroleum systems, nigeria petroleum systems of. Sequence stratigraphy analysis of unik field, onshore niger. The formation of niger delta basin was initiated in the early tertiary time. Sedimentary architecture models of deepwater turbidite channel. The niger delta is a large, arcuate delta of the destructive, wavedominated type.
Geology and location of the study area niger delta is a prolific hydrocarbon belt in the world. Reservoir description and characterization of eni field. The geology of the tertiary niger delta province has been described by several workers short and stauble, 1967. Pdf hydrochemical facies classification and groundwater. The delta grossly consists of three subsurface lithostratigraphic unitsthe marine akata shales, the paralic agbada formation, and the continental benin. The niger delta basin is one of the most prolific hydrocarbon provinces. Niger delta w a l vis ridge angola cabinda namibe basin geology and total petroleum systems of the westcentral coastal province 7203, west africa u.
The extensional domain, inner fold and thrust belt and the outer fold and thrust belt are all shown. Structural styles in the deepwater fold and thrust belts of the niger. Northern delta, greater ughelli, central swamp, and coastal swamp and offshore depobelts. Deposits of the plaquemines and balize delta lobes, mississippi riverdeltaic. The niger delta is the delta of the niger river sitting directly on the gulf of guinea on the atlantic ocean in nigeria. Subsidence of the african continental margin and cooling of the newly. The subsurface geology of delta state which is part of the niger delta basin is depicted in figure 1. Map of niger delta showing the study area 2 hydro chemical facies identification and groundwater quality studies in eastern niger delta, nigeria geology and hydrogeology of the area the study area portharcourt, aba, owerri and environs is underlain by pliocenepleistocene benin formation figure 2 belonging to the benin formation. An estimate of oil window in nigeria niger delta basin from. The principal source for oil and gas in the niger delta is the tertiary deltaic petroleum system, consisting of type ii, iiiii, and iii kerogens. The structure of the offshore niger delta tional accommodation on the slope in the inner fold and thrust belt, as well as distal contraction in the outer fold and thrust belt. The study area is located in onshore niger delta petroleum basin figure 1. The niger delta is situated in the gulf of guinea on the west coast of central africa fig. The stratigraphy of the niger delta is intimately related to its structure.
Pdf determination of geomechanical properties of a. Studies on reservoir characterization of the niger delta have been carried out by several researchers. A sequence of undercompacted marine clays, overlain by paralic deposits, in turn covered by continental sands, is present throughout, builtup by the imbricated superposition of numerous offlap cycles. Petroleum geology of the niger delta semantic scholar.
The niger delta exhibits similar rock properties but an anomalously low taper sum of the bathymetric slope and dip of the basal detachment compared with most orogenic fold belts. Modeling hydrocarbon generation potentials of eocene source. Niger delta petroleum systems, nigeria petroleum systems. International journal of geology, earth and environmental sciences issn. The river niger and the asaba plateau with its undulating. Kinematic analysis of a growth fault system in the niger delta from. The niger delta is situated in the gulf of guinea and extends throughout the niger delta province 7. Stratigraphy and sedimentology of the niger delta geologos. Figure 2 is a 275 km, prestack depth migrated and interpreted seismic line across the offshore niger delta that extends from the shelf to the basin floor.
B 5323, nigeria geology, ecology, and landscapes 2020, vol. The deepwater niger delta includes two large fold and thrust belts, products of. Background to environmental degradation in ogoniland. Pdf an overview of the geology and hydrogeology of nigeria. The study area is located within the northern depobelt of the niger delta sedimentary basin fig. Pdf porosity modelling was carried out in two oilwells of stacked reservoirs in the. Structural section of the niger delta complex showing benin, agbada and. Pdf reservoir description and characterization of eni field. Stratigraphy and petroleum plays of the late to middle.
Chapter a tertiary niger delta akataagbada petroleum system no. Information on the geological setting of the niger delta has been well published nwajide, 2006. Delta state, figure 1, falls approximately between latitude 6 040i 6 015in and longitude 6 040ie 6 045ie, is bound on the east and north east by the river niger and on the west by the rolling slopes of the asaba plateau. It is a subsea type development located about 3500ft water depth and has produced over 330 mmstb of hydrocarbon till. Development geology reference manual, 1992 aapg special. It is typically considered to be located within nine coastal southern nigerian states, which include.
Oct 15, 2016 the northern delta depobelt is a significant petroleum province in the niger delta basin. The sedimentary basins comprises of 7 inland basins namely the niger delta, the anambra basin, the benue trough, the chad basin, the sokoto basin, the bidanupe basin and the. Geology department ahmadu bello university zaria, nigeria e. Modeling hydrocarbon generation potentials of eocene. It lies on latitudes 40001n and 60031n and longitudes 40301e and 80301e. Georger joined the petrolin group switzerland in 1995 and is responsible for all crude oil trading activities, including the. Pdf hydrocarbon reservoir characterization of otan. Delta, to the niger delta, the greatest opportunities will come from managing. Burial history and maturity levels of the eocene source rocks in the northern delta depobelt have not been extensively discussed. An estimate of oil window in nigeria niger delta basin. Niger delta province, nigeria cameroon, and equatorial guinea, africa by michele l. This low taper implies that the niger delta has a very weak basal detachment, which we interpret to reflect elevated porefluid pressure 0.
Hydrogeochemical assessment of groundwater quality in parts of the. Geology of the niger delta the niger delta is an oil province of nigeria located on the west african continental margin. Preliminary hydrogeochemical investigations of subsurface waters in parts of the niger delta. Exxonmobil exploration well x, located in offshore niger delta. The basin is deformed by large synsedimentaty faults, roll. Structural and stratigraphic mapping of emi field, offshore. Sequence stratigraphic study of x field in eastern offshore of niger delta, nigeria. The niger delta forms one of the worlds major hydrocarbon provinces and it is situated on the gulf of guinea on the west coast of africa southern part of nigeria. Geology and total petroleum systems of the westcentral. The niger delta is contact osuwake omini etimita etimita. The thicker reservoirs likely represent composite bodies of stacked channels doust and omatsola, 1990. Doust h, omatsola m 1990 petroleum geology of the niger delta. Pdf an overview of the geology and hydrogeology of.
Stratigraphy, structure and hydrocarbon potential related. Pdf detecting and predicting over pressure zones in the. The tertiary niger delta covers an area of about 75,000 sq km and is composed of an overall regressive clastic sequence which reaches a maximum thickness of 30,000 to 40,000 ft 9,000 to 12,000 m. This basin is very complex, and it carries high economic value as it contains a very. Pdf deepwater niger delta fold and thrust belt modeled as. Kurowska university of silesia department of fundamental geology sosnowiec poland abstract niger delta sedimentary basin is a large arcuate delta of the destructive dominated wave type that has been explored for. Throughout its history, the delta has been fed by the niger, benue and cross rivers. Greater ughelli depobelt, niger delta the deep drilling campaign in the niger delta has. The niger delta, on the west african continental margin fig. Early alluvial fan and mouthbar deposits are overlain by the topset fa iii and truncated by the foreset fa iv of a gilberttype delta in the central part of the fan delta complex, whereas fa. Abstract the niger delta is one of the worlds largest tertiary delta systems and an extremely prolific hydrocarbon province.
191 1590 946 283 1009 1271 1728 433 1193 555 727 553 552 1616 612 548 668 1587 1130 597 1254 1457 775 951 1737 718 1170 245 1561 1566 1115 718 1128 1189 387 1422