Effects Of Heterogeneity On The Petrophysical Parameters Of Sandstone Reservoirs And Volumetrics :Niger Delta

Oluwole David 23 PAGES (5941 WORDS) Dissertation
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This  study  identified  and  correlated  hydrocarbon  bearing  reservoirs,  interpreted  geological  structures  and  petrophysical parameters  and  described  facies  and  environment  of  deposition  using  seismic  and  well  log  data.  These  were  with  a  view  to assessing  the  impact  of  reservoir  heterogeneity  on  petrophysical  parameters  and  to  determine  the  hydrocarbon  potential  of “Devo”  Field,  Niger  Delta.  Porosity,  permeability,  water  saturation,  net-to-gross,  and  hydrocarbon  saturation  with  values ranging  between 25.0  and  26.2%,  735.0  and 9019.4 mD,  15.3  and  67.5%,  49.6 and  57.3%,  and  32.1 and  84.7%  respectively. The Thomas-Steiber  shaly-sand  model  analysis  revealed  that  laminated  shale  was  widely  distributed  all  through  the  “Devo” Field  reservoirs.  Despite  the  dominance  of  laminated  shale,  the  reservoir  quality  from  porosities  (26.0,  26.2,  and  25.4%), permeability  (5264.0,  4419.8,  and  3658.8  mD)  values  revealed  very  good  to  excellent  qualities  according  to  classifications made  by  Levorsen.  Structural  framework  interpretation  showed  that  sealing  fault  closure  which  includes  the  growth  faults F12,  F13,  and  F17  with  antithetic  faults  F18  and  F22  constitute  the  structural    heterogeneity  influencing  oil  trapping. Utilizing  Amaefule's  technique,  the  crossplots  of  Reservoir  Quality  Index  and  Normalized  Porosity  indicated  increasing reservoir  quality  in  relation  to  the  normalized  porosity.  Facies  description  demonstrated  that  five  different  facies  (channel, tidal  channel,  mouth  bar,  shoreface,  and  tidal  flat)  were  associated  with  the  reservoirs  and  their  environments  of  deposition were  categorized  as  fluvial  and  shallow  marine  environments.  The  volumetric  estimations  showed  that  Reservoir  1  closures have  Prospects  1  (241.6  Million  of  Stock  Tank  Barrels,  MMSTB)  and  2  (78.1  MMSTB)  in  terms  of  calculated  Stock  Tank Original  Oil-In-Place  (STOOIP).  Reservoir  2  closures  have  Prospects  1  (250.6  MMSTB)  and  2  of  (127.7  MMSTB),  while Reservoir 3  closures  have Prospects 1  (48.8  MMSTB) and  2 (63.2 MMSTB) in terms of the calculated STOOIP. 

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APA

Oluwole, D (2020). Effects Of Heterogeneity On The Petrophysical Parameters Of Sandstone Reservoirs And Volumetrics :Niger Delta. Afribary.com: Retrieved September 18, 2020, from https://afribary.com/works/100381102019740-7936583

MLA 8th

David, Oluwole. "Effects Of Heterogeneity On The Petrophysical Parameters Of Sandstone Reservoirs And Volumetrics :Niger Delta" Afribary.com. Afribary.com, 06 Sep. 2020, https://afribary.com/works/100381102019740-7936583 . Accessed 18 Sep. 2020.

MLA7

David, Oluwole. "Effects Of Heterogeneity On The Petrophysical Parameters Of Sandstone Reservoirs And Volumetrics :Niger Delta". Afribary.com, Afribary.com, 06 Sep. 2020. Web. 18 Sep. 2020. < https://afribary.com/works/100381102019740-7936583 >.

Chicago

David, Oluwole. "Effects Of Heterogeneity On The Petrophysical Parameters Of Sandstone Reservoirs And Volumetrics :Niger Delta" Afribary.com (2020). Accessed September 18, 2020. https://afribary.com/works/100381102019740-7936583