Research Papers/Topics in Sedimentary And Petroleum Geology

Comparative Evaluation Of Sandstones Properties In Parts Of The Anambra Basin, Southeastern Nigeria.

ABSTRACT The evaluation of sandstone properties in parts of the Anambra Basin was undertaken to identify the spatial distribution of textural, petrophysical and mineralogical properties of sandstone bodies in the area in order to assess their potentials to host hydrocarbons. Sandstone units from Nkporo Formation, Mamu Formation, Ajali Sandstone and Umuna Sandstone were subjected to textural analysis using sediment granulometry, thin-section petrography and geochemical analysis. Followi...

Characterization And Depositional Environments Of Upper Cretaceous Sediments Exposed At Ikpankwu Quarry And Km 75, Port Hacourt- Enugu Road, Okigwe

ABSTRACT The study is on the characterization and depositional environment of upper Cretaceous sediments exposed at the Ihube-Ikpankwu Axis, Okigwe. The results of field and laboratory studies on selected samples of the study area show that the sediments in the study area are fine to medium grained, with an average mean size of 1.808Φ. The standard deviation (dispersion sorting) values range from 1.38 – 2.48 i.e. poorly to moderately sorted with an average value of 1.805Φ. The studi...

Sediments Thickness And Structural Framework Of Lake Natron Basin And Their Implications For Hydrocarbon Potentiality

ABSTRACT Lake Natron is among the basins of the Eastern branch of the East African Rift located in Northern Tanzania. The main objective of this study was to establish the spatial variation of sediments thickness and to delineate the subsurface structures that control the configuration of the basement and their implications for hydrocarbon potentiality. The study utilized both aeromagnetic and gravity data in achieving the objectives. Two dimension gravity modelling, Euler deconvolution...

Regional Stratigraphic And Structural Framework Of Parts Of The Eastern Coastal Swamp Depo-Belt Of The Niger Delta.

ABSTRACTFacies geometry, stratigraphic configuration, structural style, hydrocarbon type and distributionwithin the paralic Agbada Formation of Middle to Late Miocene age across several fields in theEastern part of the Coastal Swamp depo-belt were studied using regional 3D seismic, wire-linewell logs and biostratigraphic data. The study involved analyses of sequence stratigraphicframework across nine fields using information obtained from twenty- four wells. Ten majorstratigraphic boundi...

A Study Of Petrophysical Properties Of The Lake Beds Of The Rukwa Basin Based On Well Log Data

ABSTRACT Well, logging is the practice of making a detailed record of the geologic formations penetrated by the well. The key purpose of well logging is to obtain petrophysical properties of reservoirs such as porosity, permeability, hydrocarbon saturation etc., for hydrocarbon exploration. Logs also tell us about the fluids in the pores of the reservoir rocks. Petrophysical parameters such as effective porosity (Φ), water saturation (Sw), formation water resistivity (Rw), hydrocarbon ...

Seismic Facies Classification And Identification Using Neural Net And Principal Component Methods In The Bemba Field In Niger Delta, Nigeria

ABSTRACTSeismic facies classification was done on 3D Prestack Time Migrated seismic data (PSTM)acquired in 1990 in the Bemba Field in the Costal Swamp Depobelt of the Niger Delta, withthe aid of STRATIMAGIC™ ( a 3D stratigraphic interpretation tool) and VOXELGEO™ ( aVolume visualization tool) softwares. Three (3) horizons E2000, F2000, G1000 wereinterpreted. To clearly delineate and control the quality of the auto-tracked picks, horizonsattributes (amplitude, dip and azimuth maps) w...

Source Rock Evaluation And Depositional Environment Of Middle Eocene – Early Miocene Sediments In Umuahia And It’s Evirons, Niger Delta Basin, Southeasthern Nigeria.

  ABSTRACT The study area is bounded by latitudes 5027’N and 5034’N, and longitudes 7025’E and 7035’E. It falls within the Northern Niger delta Basin. The aim of this present study is to evaluate the hydrocarbon potentials of the sediments in the area, determine their age and environment of deposition. To achieve this aim, geochemical analysis (TOC and Rock-Eval) and Palynological studies were carried out on fifteen (15) samples. Results from the analysis indic...

Detection Of Hydrocarbon Seeps Using Remote Sensing Technique In The Rufiji Onshore Basin

ABSTRACT Hydrocarbon seeps cause chemical and mineralogical alterations at the surface, which can be identified geologically but also detected by remote sensing techniques. This work aimed at detecting mineral alteration induced by hydrocarbon seeps in a sandstone formation in Rufiji basin (Wingayongo), South Coast Tanzania. For this study, rock samples collected during fieldwork were petrographically analysed and the multispectral ASTER data was downloaded and utilized to characterize ...

Sedimentologic And Paleocurrent Analysis Of The Early Triassic Strata In The Ruhuhu Basin, Tanzania

ABSTRACTRuhuhu basin has eight informal lithostratigraphic units, termed the K1 to K8.This research was conducted at Lifua Member (formally K8). The beds are of Early Triassic and are the youngest stratigraphic unit of the Karoo strata in the RuhuhuBasin. This research applies sedimentology and paleocurrent analysisof the early Triassic strata in interpreting provenance, shape and orientation andreconstructing paleogeography of this unit.It involved description, measurements and sampling of t...

Characterization Of The Accommodation Zones Along Restraining And Releasing Bends From Analogue Modeling Simulating The Seagap Fault, Off-Shore Tanzania

ABSTRACTThere is poor understanding of geometry and evolution of the accommodation zonesalong the restraining and releasing bends in strike slip systems. This dissertationfocused on characterize the accommodation zones between restraining and releasingbends, with special focus on the influences of syn-kinematic sedimentation and thebasement pre-existing structuration by simulating the Seagap fault , Off-shoreTanzania.A set of three scaled sand models were performed, using a asement o set. m m...

Comparative Evaluation Of Sandstones Properties In Parts Of The Anambra Basin, Southeastern Nigeria

ABSTRACT The evaluation of sandstone properties in parts of the Anambra Basin was undertaken to identify the spatial distribution of textural, petrophysical and mineralogical properties of sandstone bodies in the area in order to assess their potentials to host hydrocarbons. Sandstone units from Nkporo Formation, Mamu Formation, Ajali Sandstone and Umuna Sandstone were subjected to textural analysis using sediment granulometry, thin-section petrography and geochemical analysis. Following...

Characterization And Depositional Environments Of Upper Cretaceous Sediments Exposed At Ikpankwu Quarry And Km 75, Port Hacourt- Enugu Road, Okigwe

ABSTRACT The study is on the characterization and depositional environment of upper Cretaceous sediments exposed at the Ihube-Ikpankwu Axis, Okigwe. The results of field and laboratory studies on selected samples of the study area show that the sediments in the study area are fine to medium grained, with an average mean size of 1.808Φ. The standard deviation (dispersion sorting) values range from 1.38 – 2.48 i.e. poorly to moderately sorted with an average value of 1.805Φ. The studie...