A recently computed fit of the african and south american continents is astonishingly close, apart from an overlap of some 120 miles in the vicinity of the niger delta. In this work, we determined the geomechanical properties of a typical hydrocarbon well within the niger delta basin using geophysical well logs. The modern niger delta exemplifies a type of delta in which sand as well as mud is supplied to a receiving water body of high energy. Schoeneich geology department ahmadu bello university zaria, nigeria e.
Information on the geological setting of the niger delta has been well published nwajide, 2006. A new threefold lithostratigraphic subdivision is introduced for the niger delta subsurface, comprising an upper sandy benin formation, an intervening unit of alternating sandstone and shale named the agbada formation, and a lower shaly akata formation. Oil can come to rest right up against the salt, which makes salt an effective seal rock. Stratigraphy and sedimentology of the niger delta 7 during the middlelate eocene, sediment was deposited fig. Stratigraphy and sedimentology of the niger delta in. Formation evaluation of an onshore oil field, niger delta. 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. Odeyemi intermediate rocks from older granite complexes. The depositional environments, and corresponding sedimentary facies, are distributed concentrically within the deltaic region. Niger delta province, nigeria, cameroon, and equatorial guinea, africa by michele l. 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 structure of the offshore niger delta geology department. Engineeringgeological characteristics and classification of the major superficial soils of the niger delta. N and anyanwu, j department of physics, university of port harcourt abstract.
Sedimentary architecture models of deepwater turbidite channel systems in the niger delta continental slope, west africa. An estimate of oil window in nigeria niger delta basin from. The subsurface geology of delta state which is part of the niger delta basin is depicted in figure 1. Niger delta petroleum systems, nigeria, by richard c. Structural and seismic facies interpretation of fabi field.
In 1965, the delta 1 well was completed and the delta field opened in 1968 for production. The niger delta is situated on the gulf of guinea on the west coast of central africa figure 1. Niger delta is the youngest sedimentary basin within the benue trough system. Introduction the niger delta is ranked among the worlds major hydrocarbon provinces in the world. Subsurface and petrophysical studies of shalysand reservoir. Ndu post utme past questions for law pdf download with. The niger delta is a classic example of a passive margin delta that has gravitationally deformed above an overpressured shale decollement. An estimate of oil window in nigeria niger delta basin.
The niger delta basin lies between latitude 40000n and 60000n and longitude 50000e and 80000e. The niger delta started to evolve in early tertiary times when clastic river input increased doust and omatsola, 1989. Properties of rocks and soils 882028 engineeringgeological characteristics and classification of the major superficial soils of the niger delta akpokodje, e g engng gcol v23, n34, july 1987, p193211 a survey of superficial soils in the niger delta was carried out. Reservoir characterization in o field in the niger delta. 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. Between these massifs, sedimentary basins are strung out along a northeastsouthwest axis from lake chad to the niger delta, i. Niger has fossil fuels which includes deposits of petroleum and coal. Niger delta gravitydriven deformation above the relict. The delta field is located offshore from nigeria on oil mining leases oml 49 and 95. Psintegrated reservoir quality study of deepwater clastic deposits, offshore western niger delta, nigeria c. The niger delta basin has built out into the central atlantic at the north of the niger benue and cross river drainage systems. Niger delta basin, and its thickness is 2,000 m to 7,000 m doust and omatsola. The niger delta is the delta of the niger river sitting directly on the gulf of guinea on the atlantic ocean in nigeria. The basin is deformed by large synsedimentaty faults, roll.
Niger delta, biostratigraphy, sedimentology, megasequences, cycles 1. This study attempts to optimize hydrocarbon production of an oil field in niger delta through an uncertainty free hydrocarbon reservoir modelling. Assessment of undiscovered petroleum in the tertiary niger delta. The niger delta is a prolific oil province within the west african subcontinent. The niger delta basin lithic fill is considered to be selfcontained in terms of its structural geology, since the ns and nwse trends of the underlying basement have not controlled the arcuate, shorelineparallel depobelt configuration dominating the delta tectonics. 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. Within the delta the river breaks up into an in nigeria.
Delta field, niger delta, integration, stratigraphic mapping, structural interpretation, well logs. Obaje, geology and mineral resources of nigeria, lecture notes in earth sciences 120, doi 10. Pdf determination of geomechanical properties of a. Niger delta petroleum systems, nigeria request pdf. Niger delta geographical region, africa britannica.
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. 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. 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. Sedimentary architecture models of deepwater turbidite.
The study area is located onshore of the niger delta nigeria, it covers an area of 40,000 km2. Geology of nigeria by kogbe pdf the gboko limestone, yandev, benue state, nigeria. Business business, international petroleum, energy and mining. The thickness of the basin ranges between 1012km and it is. Reservoir description and characterization of eni field. Geological section through the sedimentary layers of the niger delta s mouth 9.
Engineeringgeological characteristics and classification. The geology, stratigraphy, petroleum geology and structure of the niger delta basin have been extensively discussed in several key publications 12,14,23,26,28 31. It is not surprising that there is a repertoire of literature covering the various epochs of the region. There are some natural hazards in the country of niger, one of which is the recurring occurrences of drought. A sequence of undercompacted marine clays, overlain by paralic deposits, in turn covered by continental sands, is present throughout, builtup by the imbricated super position of numerous offlap cycles. The eocene continental terminal is an unconfined sandstone aquifer. Geotechnical attributes of niger delta soils, warri environs, nigeria oghonyon rorome1, adeniran adedoyin a2 3and opaimi iniala 1,2,3department of geology, university of port harcourt, port harcourt, nigeria. Ndu post utme past questions for medicine and surgery pdf. Foraminifera biostratigraphy and paleoenvironment of well 5. This is located within the niger delta basin and sits in 12 feet of water. In this study, we use 3d seismicreflection data from the forcadosyokri area, western niger delta, nigeria, to study the lateral linkage and landwards backstepping history of an array of listric normal faults, particularly focusing on their influence on the development and evolution of hangingwall rollovers. Mined uranium is niger s biggest export, but mining remains a relatively small part of gdp. During the tertiary it built out into the atlantic ocean at the mouth of the niger benue river system, an area of catchment that encompasses more than a million square kilometers of predominantly savannahcovered lowlands. This basin is very complex, and it carries high economic value as it contains a very.
The southern nigeria sedimentary basin includes the lagososse and the niger delta. 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 benin formation is characterized by high sand percentage 70100% and forms the top layer of the niger delta depositional sequence. Tertiary niger delta akataagbada petroleum system no. In the niger delta and other very recent rapid depositional areas, shales will also move plastically and form shale diapers, much like salt diapers. Call or whatsapp us on 080511885 for the account number to make payment and how to received your complete copy of the past questions to be sent directly to your email address or whatsapp number. Structural and stratigraphic mapping of delta field. How to get niger delta university ndu post utme past questions and answers for law. The influx of people into the niger delta air pollution and health waste management and health impacts on culture, traditions and authority structures the history of environmental management in the niger delta conclusion chapter four. It is the most important in the west african continental margin. Structural and seismic facies interpretation of fabi field, onshore niger delta, nigeria kehinde oluwatoyin olowoyo dissertation. It is typically considered to be located within nine coastal southern nigerian states, which include.
Oil and gas in the niger delta are primarily produced from. A political map of niger and a large satellite image from landsat. An estimate of oil window in nigeria niger delta basin from recent studies j. The niger delta is a wavedominated delta located on the continental margin of the gulf of guinea that formed in the paleogene. Application of free structural model to hydrocarbon production optimization in x field, niger delta. Niger delta akataagbada petroleum system of9950h, chapter a. Generally the delta prograded over the subsidizing continentaloceanic lithospheric transition zone, and during the oligocene spread onto oceanic crust of the gulf of guinea adesida et al.
Surface geology shown on the african plate, major cretaceous rift basins and breakup direction shown. Pd 41 petroleum geology of the niger delta onepetro. The delta stretches for about 300km from apex to mouth and covers an area of at. Some of the other natural resources are gypsum, salt and phosphates. Map of the offshore niger delta showing the location of regional transects 110 used in this study, bathymetry, and. Petrophysical evaluation of reservoir sand bodies, onshore field, eastern niger delta, nigeria okumokod. Petroleum geology of the niger delta abstract the niger delta is a large, arcuate delta of the destructive, wavedominated type. 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. Jul 30, 2007 the size and distribution of niger delta fields is remarkable. In contrast, the distribution of field sizes in the niger delta is uniform. The outboard niger delta clastic wedge, including the akata formation overpressured shale decollement, is differentially thickened across relict oceanic basement steps formed at the chain and charcot fracture zones. A school of thought believes that most of the hydrocarbon generated in niger delta were derived from both akata and agbada formations 2,6,7,9. Reservoir description and characterization of eni field offshore niger delta, southern nigeria. Apart from middle east, which has a long historiography of interminable crises, the niger delta region, ndr, is the most studied region of the world.
Apr 07, 2020 are you in faculty of medicine, eligible for niger delta university admission screening exercise, also know as ndu post utme, if yes, you need the ndu post utme past questions for medicine and surgery, to enhance your preparatory skills in readiness to the exam. This was aimed at increasing the resolution for prediction of reservoir, seal, and source rocks in the eastern part of the basin. Fundamentals of petroleum geology pdf free download. Geology of the niger delta the niger delta is an oil province of nigeria located on the west african continental margin. Geomechanical properties we estimated using acoustic velocities derived from interval transit time which. Regional integration of results from conventional exploration geochemistry, structural analysis, and gravitymagnetic data provide a comprehensive new understanding of niger delta petroleum systems. Call or whatsapp us on 080511885 for the account number to make payment and how to received your complete copy of the past questions to be sent directly to your email address or. S gulf coast, california, canada, china, venezuela, trinidad, western africa, and indonesia. Engineering geology of the niger delta 67 sediments originating from the vast catchment area and geologic ally com plex hinterland fig. The niger is the thirdlongest river in africa, exceeded only by the nile and the congo river also known as the zaire river. It runs in a crescent through mali, niger, on the border with benin and then through nigeria, discharging through a massive delta, known as the niger delta or the oil rivers, into the gulf of guinea in the atlantic ocean.
In most other oil provinces, there is a noticeable skewness in the distribution of field sizes, e. The first delta was deposited in tertiary times when the niger flowed into the tertiary sea, some 60 to 150 million years ago, at least 30m higher than the modern sea. 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. Maps showing the geological setting of the niger delta in a section 8. Sequence stratigraphy and depositional environments of middle. Over 10 million scientific documents at your fingertips.
The country also has gold and coal and deposits of tin and phosphate were mined in the past. Deepwater niger delta fold authors and thrust belt. Rahaman preliminary report on the field relationships of the basement complex rocks around igarra, midwest i. Geology department ahmadu bello university zaria, nigeria e. This paper attempts to determine whether there is a genuine misfit at this point or whether the delta may have grown beyond the continental margin after the continents separated.
The massive sands were deposited in continental environment comprising the fluvial realms braided and meandering systems of the upper delta plain. Pdf an overview of the geology and hydrogeology of nigeria. The niger delta system figure 1 is one of the worlds largest tertiary deltas and one of its most prolific hydrocarbon systems, containing an estimated 68 bboe and producing approximately 3 mmboe per day. The area is characterized by a mosaic of floodplain deposits and. Integrated reservoir quality study of deepwater clastic. It works on your desktop computer, tablet, or mobile phone. Apr 09, 2020 how to get niger delta university ndu post utme past questions and answers for law. Summary of the geology of the study area the studied area is located in parts of the onshore zone in the niger delta sedimentary basin, nigeria fig. 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. The metallic resources include gold, tin, uranium, iron ore and molybdenum.
The niger delta is a vast lowlying region through which the waters of. Kurowska university of silesia department of fundamental geology sosnowiec poland abstract. An overview of the geology and hydrogeology of nigeria. As a step towards understanding this geohistory, this study examines the stratigraphy and sedimentary structures of the umunya section of the eocene nanka formation, a component of the ameki group of the niger delta basin. The niger delta is made up of three generalized lithostratigraphic units from oldest to youngest namely akata, agbada and the topmost benin formations 26. Application of free structural model to hydrocarbon. The third cycle, from eocene to recent, marked the continuous growth of the main niger delta. Abstract in the niger delta province, we have identified one petroleum systemthe tertiary niger delta akataagbada petroleum system. The niger delta region in the light of the theory of. Ndu post utme past questions for law pdf download with answer. Its development began after the eocene tectonic phase.
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