Sedimentary facies analysis and seismic interpretation of deep-water reservoirs, “PAC” field, offshore depobelt, Niger Delta basin

2017 ◽  
Vol 10 (24) ◽  
Author(s):  
A. W. Mode ◽  
P. A. Chikezie ◽  
O. C. Ekwenye ◽  
O. A. Anyiam ◽  
I. C. Okwara
Keyword(s):  
Deep Water ◽  
Niger Delta ◽  
Facies Analysis ◽  
Sedimentary Facies ◽  
Seismic Interpretation ◽  
Water Reservoirs ◽  
Niger Delta Basin

Sedimentary facies and petrographic analyses of Miocene nearshore deposits, Central Swamp Depobelt, onshore Niger Delta Basin: implications for reservoir quality

2021 ◽  
Author(s):  
Joseph Nanaoweikule Eradiri ◽  
Ehimare Erhire Odafen ◽  
Ikenna Christopher Okwara ◽  
Ayonma Wilfred Mode ◽  
Okwudiri Aloysius Anyiam ◽  
...  
Keyword(s):  
Niger Delta ◽  
Sedimentary Facies ◽  
Reservoir Quality ◽  
Petrographic Analyses ◽  
Niger Delta Basin

scholarly journals Depositional, diagenetic and stratigraphic aspects of Macaé Group carbonates (Albian): example from an oilfield from Campos Basin

2015 ◽  
Vol 45 (2) ◽  
pp. 243-258 ◽  
Author(s):  
Juliana Okubo ◽  
Ricardo Lykawka ◽  
Lucas Veríssimo Warren ◽  
Julia Favoreto ◽  
Dimas Dias-Brito
Keyword(s):  
Deep Water ◽  
Carbonate Rocks ◽  
Facies Analysis ◽  
Sedimentary Facies ◽  
Fair Weather ◽  
Thin Sections ◽  
Carbonate Sedimentation ◽  
Diagenetic Processes ◽  
Campos Basin ◽  
Facies Associations

<p>Carbonate rocks from the Macaé Group (Albian) represent an example of carbonate sedimentation related to the drift phase in Campos Basin. This study presents depositional features, integrating them with diagenetic and stratigraphic aspects of the Macaé Group carbonates including the upper part of the Quissamã Formation and the lower part of the Outeiro Formation. Macroscopic analyses in cores and microscopic ones in thin sections allowed the recognition of eleven sedimentary facies - nine of them corresponding to the Quissamã Formation and two of them representing the Outeiro Formation. These facies were grouped into five facies associations. Oolitic grainstones and oncolitic grainstones are interpreted to be deposited in shallow depth probably in shoals above the fair weather wave base. The interbanks between shoals were formed in less agitated waters and characterized by deposition of peloidal bioclastic packstones and wackestones representative of sedimentation in calm waters. Bioclastic packstones and oolitic packstones/wackestones represent allochthonous deposits related to the beginning of the regional drowning that occur in upper Quissamã Formation. Pithonellids wackestones and bioclastic wackestones with glauconite are related to deep water deposits, characteristics of the Outeiro Formation. Post-depositional features revealed the action of diagenetic processes as, micritization, cimentation, dissolution, compaction, dolomitization and recrystallization occurred during the eo- and mesodiagenesis phases. Vertical facies analysis suggests shallowing upward cycles stacked in a sequence progressively deeper towards the top (from the Quissamã Formation to the Outeiro Formation).</p>

Composite Sand Bodies Architecture of Deep-Water Turbidite Channels in the Niger Delta Basin

2014 ◽  
Vol 88 (6) ◽  
pp. 1822-1834 ◽  
Author(s):  
Yu LIN ◽  
Shenghe WU ◽  
Xing WANG ◽  
Yun LING ◽  
Yao LU ◽  
...  
Keyword(s):  
Deep Water ◽  
Niger Delta ◽  
Niger Delta Basin ◽  
Sand Bodies

scholarly journals Digital Rock Approaches to Estimate the Impact of Early Quartz Cementation in Miocene Deepwater Sands Niger Delta Basin, Nigeria

2017 ◽  
Vol 6 (2) ◽  
pp. 138
Author(s):  
Ibukunoluwa S. Adeola ◽  
Jim Buckman ◽  
Gary Couples ◽  
Adewole John Adeola
Keyword(s):  
Deep Water ◽  
Niger Delta ◽  
Scattered Electron ◽  
Two Phase ◽  
Flow Models ◽  
Porosity And Permeability ◽  
Final Porosity ◽  
Quartz Cement ◽  
Niger Delta Basin ◽  
The Impact

Quartz cement forming as syntaxial overgrowths is one of the most abundant cement type in sandstones. The rim and occluding cements develop around the surfaces of frame work grains and fill up pore spaces with no preferred orientation with grain surfaces. Imaging the various forms of quartz cement generation and development in 3D as it increases through time will help in further evaluation and better understanding of a reservoir in deep water sands in Niger Delta Basin.Petrographic analysis was performed on 10 Samples with micron resolutions of 0.675 and 0.337 per pixel. Scanning Electron Microscopy (SEM) using the Cathoduluminiscence (CL) and Back Scattered Electron (BSE) was employed in delineating the detrital quartz from the syntaxial quartz cements. Image J Software and Scandium Software were employed in binarizing the BSE image samples and study the iteration porosity, final porosity and permeability. 3DSlicer software was employed to produce 3D images for better understanding of the impact of early cement in the deep water sands. Two Phase Flow Models was also generated for each samples to outlines the effect of cementation.Quartz cement reduces porosity and peremability significantly at early stages of quartz cementation. Small local quartz overgrowths do join and link together with increasing cement precipitation hence gradually impeding porosity and drastically reducing permeability. Modelled results showed similar trends and this is an indication that when analysing a top reservoir unit, once the cementation is more than 6% the possibility of it being a good reservoir is relatively low.

Seismic interpretation, structural analysis, and fractal study of the Greater Ughelli Depobelt, Niger Delta Basin, Nigeria

2011 ◽  
Vol 30 (6) ◽  
pp. 640-648 ◽  
Author(s):  
D. K. Amogu ◽  
J. Filbrandt ◽  
K. O. Ladipo ◽  
C. Anowai ◽  
K. Onuoha
Keyword(s):  
Structural Analysis ◽  
Niger Delta ◽  
Seismic Interpretation ◽  
Niger Delta Basin

Reservoir quality variations within a sinuous deep water channel system in the Niger Delta Basin, offshore West Africa

2015 ◽  
Vol 63 ◽  
pp. 166-188 ◽  
Author(s):  
Jiajia Zhang ◽  
Shenghe Wu ◽  
Xing Wang ◽  
Yu Lin ◽  
Hongjun Fan ◽  
...  
Keyword(s):  
West Africa ◽  
Deep Water ◽  
Niger Delta ◽  
Water Channel ◽  
Reservoir Quality ◽  
Channel System ◽  
Niger Delta Basin
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