The niger delta is a wavedominated delta located on the continental margin of the gulf of guinea that formed in the paleogene. The niger delta, which stretches for nearly 150 miles 240 km from north to south and spreads along the coast for about 200 miles 320 km, extends over an area of 14,000 square miles 36,000 square km. During the tertiary, the delta built out into the atlantic ocean at the mouth of the nigere. Many of the nigeriaspan lines were also acquired using a deeptowed cable and. This is located within the niger delta basin and sits in 12 feet of water. A nigerian newspaper and online version of the vanguard, a daily publication in nigeria covering nigeria news, niger delta. On 1 february 2004, to mark world wetlands day, mali will announce the designation of the entire inner niger delta 4,119,500 hectares as a ramsar site. The middle to late miocene sequence of the niger delta basin can be said to be among the most challenging targets. Structural and stratigraphic mapping of delta field. The niger delta petroleum system usgs publications repository.
Evolution of the niger delta is closely linked to the geodynamics related to the separation of the african and south american continents and the tectonics of the formation of the benue trough. Geology and mineral resources of the lower benue trough. The niger delta basin is located on the continental margin of the gulf of guinea in equatorial west africa and lies between latitudes 4 o oand 7 n and longitudes 3 o and 9 o e whiteman, 1982. N department of earth sciences, federal university of petroleum resources, effurun, nigeria abstract palynological biostratigraphic studies were carried out on ditch cutting samples obtained from wells l1 and l2. The thermal state of the niger delta basin is presented. Jacobbergerh accepted 28 january 1986 remote sensing and field mapping formed the basis for a morphological study of the upper inland niger delta, centered on the region surrounding jenne and mopti, mali. The area is characterized by a mosaic of floodplain deposits and. Stratigraphy and sedimentology of the niger delta in. On the west, it is separated from the dahomey or benin basin by the okitipupa basement high, and on the east it. During the following decades the temperature measurements in boreholes were an important element of the hydrocarbon prospecting.
Pdf porosity modelling was carried out in two oilwells of stacked reservoirs in the molog field in. The niger delta basin is situated in the gulf of guinea in equatorial west africa, between latitudes 30n and 60n and longitudes 50e and 80e reijers et al, 1996 fig. Tectonic activities, climate and eustasy are the major factors responsible for transgression and regression through the entrant point along the present niger delta area and the deposition of marine and. Stratigraphy and petroleum plays of the late to middle. On the west, it is separated from the dahomey or benin basin by the okitipupa basement high, and on the east it is bounded by the cameroun volcanic line. Detailed studies on depositional sequence, genetic facies, and depositional environment were done using sequence stratigraphic tool in the paralic sequence of middle to late miocene age in the coastal swamp depobelt of the niger delta basin. Niger delta province, nigeria, cameroon, and equatorial guinea, africa by michele l. The niger delta basin is located on the continental margin of the gulf of guinea in equatorial west africa and lies between latitudes 4 o oand 7 n and longitudes 3 o.
Geological section through the sedimentary layers of the niger deltas mouth 9. Structural section of the niger delta complex showing benin, agbada and akata formations. This is a pdf file of an unedited manuscript that has been accepted for publication. Department of geology of the anambra state university uli, for their concern, prayers. Within the delta the river breaks up into an in nigeria. The coastal sedimentary basin of nigeria has been the scene of three depositional cycles. This basin is very complex, and it carries high economic value as it contains a very. The niger delta is situated in the gulf of guinea on the west coast of central africa fig. The first began with a marine incursion in the middle cretaceous and was terminated by a mild folding phase in santonian time. Fault analysis, stratigraphic discontinuities and 3d. Sediments, offshore depobelt, niger delta, nigeria matthew o. On 1 february 2004, to mark world wetlands day, mali will announce the designation of the entire inner niger delta 4,119,500 hectares as a.
Both structural and stratigraphy traps are common in the basin doust and omatsola, 1990. Mar, 2015 detailed studies on depositional sequence, genetic facies, and depositional environment were done using sequence stratigraphic tool in the paralic sequence of middle to late miocene age in the coastal swamp depobelt of the niger delta basin. 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 niger delta sofiri peterside patterson ogon one of the great deltaic regions in the world, the niger delta is a vast sedimentary basin constructed over time through successive thick layers of sediments dating back 4050 million years to the eocene epoch. International journal of geology, earth and environmental sciences issn. 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.
The benin basin is a sedimentary basin that was initiated during the mesozoic in response to the separation of the africansouth american landmasses and the subsequent opening of the atlantic. During the tertiary, the delta built out into the atlantic ocean at the mouth of the niger e. Nwajide introduction the niger delta basin occupies the gulf of guinea continental margin in equatorial west africa, between lats. The niger delta the nigerdelta area of nigeria coincides approximately to the southsouth geopolitical zone of the country fig i. The niger delta basin is located within the perioceanic section of the abakalikibenue suture zone of the much larger southern nigerian basin. Abstract lithofacies, depositional sequences and reservoir stratigraphy of the deep offshore field, otherwise. Niger delta geographical region, africa britannica. What links here related changes upload file special pages permanent link page. One of the worlds largest deltas, the immense coastal. Figure 1 is a map of the niger delta showing study area. During the cenozoic, until the middle miocene, the niger delta grew through pulses of sedimentation. Seismic stratigraphy and depositional architecture of neogene. To the north, the niger delta is linked to the benue trough by the cretaceous anambra basin.
Only after the benue river, joins the river in nigeria does it become a large river once more. The delta consists of tertiary cenozoic sediments deposited. The benue trough had been formed as part of the widely distributed african rift population which originated some 140 million years ago burke, 1996. The anambra basin underlies the delta basin and both are demarcated by an. Subsurface temperatures obtained from continuous temperature logs in 260 wells allowed to stabilize for several months were used in.
The ideas expressed on location, geologic and tectonic setting is from. The niger delta is the youngest sedimentary basin within the benue trough system. The study area is located within the niger delta sedimentary basin. The hydrocarbon reservoirs in this study were found to be in the agbada formation, which is in conformity with the geology of the niger delta, nigeria. The quality of groundwater in the coastal aquifer of eastern niger delta has been assessed in the present study using geostatistical techniques. It lies on latitudes 40001n and 60031n and longitudes 40301e and 80301e. Weathered layer delineation in an x field in the niger delta basin of nigeria. Geostatistical assessment of groundwater quality from. In 1965, the delta 1 well was completed and the delta field opened in 1968 for production. Evolution of the niger delta, present dynamics and the.
An estimate of oil window in nigeria niger delta basin. Sequence stratigraphic analysis of each of the six 6 well log suites from the xy field in the greater ughelli depobelt, niger delta basin was achieved by the integration of biostratigraphic information stratigraphic markers and lithological data distilled out from the wireline log suites using the approach of 5. The niger delta basin, also referred to as the niger delta province, is an extensional rift basin. The benue trough had been formed as part of the widely distributed african rift population. Neogene intraslope basins, offshore western niger delta. The benue trough is arbitrarily subdivided into three portions. The niger delta clastic wedge formed along a failed arm of a triple junction system aulacogen that originally developed during break up of the south american and african plates in the late jurassic burke et al. Assessing wetland services in the niger delta, nigeria. The niger delta is framed on the northwest by a subsurface continuation of the west african shield, the benin flank. However, the sedimentary successions in these basins are broadly divisible into. Its development began after the eocene tectonic phase ekweozor and daukoru, 1994. Estimation of reservoir potentials of two wells in niger.
The niger delta sedimentary basin of nigeria contains more than 12km of. From the eocene to the present, the delta has prograded southwestward, forming depobelts that represent the most active portion of the delta at each stage or its development. Sediment deposition in this area started in early miocene times and the sedimentary package is comprised of the basal holomarine shales akata formation, the coastal plain sandshale alternations agbada formation, and coastal plain sands benin formation being the youngest. Stratigraphic column showing the three formations of the niger delta. Diagrammatic representation of the stratigraphic evolution of the niger delta. The niger delta is a vast lowlying region through which the waters of. The fundamental causative event for the origin of the niger delta basin was the breakup of the gondwana supercontinent.
Marine and petroleum geology, elsevier, 2019, 109, pp. The niger delta basin is characterized with shale diapirs, growth faults and associated rollover anticlines. Depobelt and structural play map of the niger delta basin showing the study area. Nov 28, 2017 the niger delta basin is located within the perioceanic section of the abakalikibenue suture zone of the much larger southern nigerian basin. Map of the niger river basin, showing the four sub basins. Petroleum geology of the niger delta is described in evamy et al. The range, standard deviation and variance of the dataset show that multichemical processes are controlling the groundwater qualityfacies and their spatial distributions. Udoh 1,2department of geology, university of port harcourt, port harcourt, nigeria.
The niger delta covers an area of approximately 75,000km. Sequence stratigraphic approach to hydrocarbon exploration. The depobelts in this basin form one of the largest regressive deltas in. Stratigraphy and sedimentology of the niger delta sciendo. The researcher found that the bulk of the hydrocarbon encountered in the niger delta basin was found to be within a depth range of 5,473,381 ft 1,668. Outcropping units of the niger delta include the imo formation and the ameki group. Sequence stratigraphic analysis of each of the six 6 well log suites from the xy field in the greater ughelli depobelt, niger delta basin was achieved by the integration of biostratigraphic information stratigraphic markers and lithological data distilled out from the wireline log suites using the approach of. Stratigraphic section of the anambra basin from the late cretaceous through the eocene.
Weathered layer delineation in an x field in the niger. Integrating airborne magnetic and landsat data for. Application of seismic sequence stratigraphy to exploitation of oil and gas in x field of niger deltanigeria 1inikoe. Ten countries form part of the river basin, and flow is somewhat controlled by dams which provide water for irrigation and hydropower. Outline of geology of niger delta 1 geoscienceworld. Sequence stratigraphy of the niger delta, delta field, offshore nigeria. Formation evaluation of an onshore oil field, niger delta. Radiogenic heat production from well logs in part of niger. Sequence stratigraphy and depositional environments of. A nigerian newspaper and online version of the vanguard, a daily publication in nigeria covering nigeria news, niger delta, general national news, politics, business, energy, sports. The study area lies within the area referred to as the tertiary niger delta complex fig.
941 1267 1172 1239 514 462 219 318 469 1521 769 1180 262 464 338 609 74 1294 86 1287 141 331 1440 1163 941 456 939 580 268 810 418