Estimation of Thermal Conductivity in the North- Western Niger Delta Sedimentary Basin, Nigeria, Using Geophysical Well Logs

2009 ◽  
Vol 21 (1-2) ◽  
Author(s):  
E.D Uko ◽  
P.O Ekanem ◽  
A.G Warmate ◽  
C.L Eze ◽  
I.O Akpabio
Keyword(s):  
Thermal Conductivity ◽  
Niger Delta ◽  
Sedimentary Basin ◽  
Well Logs ◽  
The North ◽  
Geophysical Well Logs ◽  
North Western

Middle, Upper Jurassic and Lower Cretaceous sedimentary environments of the Djebel Nefusa region, northwestern Libya

1977 ◽  
Vol 8 ◽  
pp. 45-49
Author(s):  
Richard J. Hodgkinson ◽  
Christopher D. Walley
Keyword(s):  
Sedimentary Basin ◽  
Upper Jurassic ◽  
Fault Scarp ◽  
The West ◽  
Sedimentary Environments ◽  
The North ◽  
Clastic Sediments ◽  
Stratigraphic Nomenclature ◽  
Saharan Platform ◽  
North Western

Carbonate and clastic sediments of Jurassic and Cretaceous age are exposed along the fault-scarp of Djebel Nefusa in north-western Libya. Previous geological investigations have been mainly restricted to the eastern sector of the scarp. Recent studies by the authors in the western sector of Djebel Nefusa and on equivalent sediments in southern Tunisia have allowed the first regional interpretation of these rocks.The area studied lies geographically and geologically at the edge of the Saharan Platform, a large cratonic block, composed of rocks of Precambrian-Palaeozoic age. To the north and east lies a downfaulted sedimentary basin (Gabes-Sabratha Basin) containing a large thickness of Mesozoic sediments. The location of the sections measured along Djebel Nefusa are depicted in Fig.1.The stratigraphic nomenclature of the rock succession of Djebel Nefusa was first established in the east and continued laterally towards the west by later workers. Difficulties in the application of this nomenclature are presented by the recognition of facies changes previously overlooked by earlier investigators. However, as a framework for understanding these changes and the sedimentary processes which caused them, the stratigraphy erected by Magnier (1963) is adopted.

scholarly journals Analysis of shaly sand reservoir rocks in the eastern Niger Delta Basin using geophysical well logs

2019 ◽  
Vol 10 (1) ◽  
pp. 1-13
Author(s):  
K. F. Fozao ◽  
Lordon A. E. Djieto ◽  
E. A. A. Ali ◽  
C. M. Agying ◽  
D. M. Ndeh ◽  
...  
Keyword(s):  
Niger Delta ◽  
Well Logs ◽  
Reservoir Rocks ◽  
Shaly Sand ◽  
Geophysical Well Logs ◽  
Niger Delta Basin

The Isoko Tribe

Africa ◽  
1934 ◽  
Vol 7 (2) ◽  
pp. 160-173
Author(s):  
James W. Welch
Keyword(s):  
Niger Delta ◽  
Personal Interest ◽  
The North ◽  
Spare Time ◽  
Southern Nigeria ◽  
Previous Training ◽  
North Western

The Isoko country in the north-western corner of the Niger Delta, Southern Nigeria, is a virgin field for anthropologists. Beyond one or two brief and usually inaccurate references in accounts of the Delta, and a Government Intelligence Report, nothing has been collected about or written upon the Isoko people. The following notes were collected by me during a first tour of eighteen months, purely out of personal interest and curiosity, and in my spare time, without any previous training in anthropology.

scholarly journals GEODYNAMICS

GEODYNAMICS ◽  
2011 ◽  
Vol 2(11)2011 (2(11)) ◽  
pp. 199-201
Author(s):  
H. Medvid ◽  
Keyword(s):  
Sedimentary Basin ◽  
Outer Zone ◽  
The North ◽  
Carpathian Foredeep ◽  
Draw Conclusion ◽  
Hydrodynamic Situation ◽  
Gas Fields ◽  
Field Formation ◽  
North Western

Paleohydrodynamic schemes of the Badenian-Sarmatian deposits of the north-western part of the Outer zone of the Pre-Carpathian foredeep are built on the basis of paleohydrodynamic reconstruction of paleopressures of formation waters of elision stage of sedimentary basin. Results of paleohydrodynamic reconstructions have demonstrated that the most part of the explored gas fields of the region is localized in the limits of the marked areas of inherited pressure minima. Comparison paleo- and modern hydrodynamic situation enable us to draw conclusion about conditions of field formation.

scholarly journals Delineation of Stratigraphic Units in Xyz Field of Niger Delta Using Geophysical Logs

2019 ◽  
Vol 3 (1) ◽  
pp. 38-49
Author(s):  
Charles C. Ekeh ◽  
Etim D. Uko ◽  
Ejiro F. Eleluwor ◽  
Friday B. Sigalo
Keyword(s):  
Niger Delta ◽  
Well Logs ◽  
Surface Porosity ◽  
Depositional Sequences ◽  
Petrophysical Parameters ◽  
Geophysical Logs ◽  
Net To Gross ◽  
Geophysical Well Logs ◽  
System Tracts ◽  
Optimum Recovery

AbstractGeophysical well logs were used to delineate the stratigraphic units and system tracks in the XYZ Field of the Niger Delta. The gross percentages for sand levels range from 93-96% in the shallow levels to 60-66% in the deeper levels. Porosity values ranged between 27% at shallower sections and 9% at deeper depths. Six depositional sequences were identified and categorized into their associated system tracts. Porosity decreases with depth in normal compacted formation for both sandstone and shale units. Surface porosity for sandstone is 42%, and for shale it is 38.7% from extrapolation of sub-surface porosity values to the surface. The depth to the base of Benin Formation is highly variable ranging between 1300 and 2600m. This study reveals the possibility to correlate sand levels over long distances which enables inferring porosity values laterally. The knowledge of the existent stratigraphic units, the Benin, Agbada and Akata Formations and their petrophysical parameters such as porosity, lateral continuity of the sands and shales, the variation of the net-to-gross of sands with depth, enables the reservoir engineer to develop a plan for the number and location of the wells to be drilled into the reservoir, the rates of production that can be sustained for optimum recovery. The reservoir engineer can also estimate the productivity and ultimate recovery (reserves) using the results on this work.

The Itsekiri in the nineteenth century; an outline social history

1963 ◽  
Vol 4 (2) ◽  
pp. 207-231 ◽  
Author(s):  
P. C. Lloyd
Keyword(s):  
Nineteenth Century ◽  
Social History ◽  
Palm Oil ◽  
Niger Delta ◽  
Political Structure ◽  
The North ◽  
North Western

In 1800 the Itsekiri kingdom of Warri in the north-western corner of the Niger delta had a highly centralized government. In 1848, the king died, followed shortly by his two principal heirs, and a state of anarchy developed in which order was maintained largely through the balance held between the two largest descent groups or ‘Houses’. The latter part of the century saw the rise, and defeat by the British of Nana Olomu, possibly the greatest of the delta traders, whose power over the Itsekiri derived from his trading monopoly. One cannot divorce these striking changes in Itsekiri social and political structure from the trade in slaves and later in palm oil, for the Itsekiri were by profession the middlemen between the interior peoples—the Urhobo and Isoko and to some extent the Benin—and the European traders.

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