The Niger Delta Province - Petroleum System

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Transcript of The Niger Delta Province - Petroleum System

  • THE NIGER DELTA PROVINCENIGERIA

    CRISTIANO ASCOLANI, PHILIPP MESTERS, JEAN-MARC SLDNER

    PETROLEUM GEOLOGY I SS 2014

    Fig. 1: Satellite picture from Niger delta

  • 2

    Nigeria: general facts

    THE NIGER DELTA PROVINCE- PETROLEUM GEOLOGY I SS 2014

    904'55.80''N814'31.00''E

    Altitude: 417 m Total surface: 923.768 km Capital: Abuja Independence day: 1st october

    1960

    Fig. 2: Geographical map of Nigeria

  • 3

    The Niger Delta

    Wave-dominated morphology Extension: 70 000 km Width: 200 km Average flow rate: 30 000 m/s Comprising of clastic sequence

    up to 12 km thick

    THE NIGER DELTA PROVINCE- PETROLEUM GEOLOGY I SS 2014

    Fig. 3: Coastal line of the Niger delta Fig. 4: Delta-mode diagram

  • 4THE NIGER DELTA PROVINCE- PETROLEUM GEOLOGY I SS 2014

    Rifting events

    Fig. 5: Rifting events chart through the Cretaceous

  • 5

    Petroleum deposits

    THE NIGER DELTA PROVINCE- PETROLEUM GEOLOGY I SS 2014

    Fig. 6: Map of the Niger delta's petroleum deposits

  • 6

    Geological overview

    THE NIGER DELTA PROVINCE- PETROLEUM GEOLOGY I SS 2014 Fig. 7: Geological map of Nigeria

  • 7THE NIGER DELTA PROVINCE- PETROLEUM GEOLOGY I SS 2014

    Facies distribution of the Niger Delta

    Fig. 8: Maps showing the geological setting of the Niger delta in a section

  • 8

    The Niger Delta

    THE NIGER DELTA PROVINCE- PETROLEUM GEOLOGY I SS 2014

    Fig. 9: Geological section through the sedimentary layers of the Niger delta's mouth

  • 9

    THE NIGER DELTA PROVINCE- PETROLEUM GEOLOGY I SS 2014

    Structural pattern

    Fig. 10: Geoligical section through the Agbada-Akata-formation showing sedimentary deposits and time-line feautures

  • 10

    Structural pattern

    Mostly, oil occurs intectonical structuresas roll-over anticlines

    Roll-over structures are due to listric fault extensions

    THE NIGER DELTA PROVINCE- PETROLEUM GEOLOGY I SS 2014

    Fig. 11: Structural pattern of the Niger delta's rock units

  • 11

    Stratigraphy of the Niger Delta

    THE NIGER DELTA PROVINCE- PETROLEUM GEOLOGY I SS 2014

    Fig. 12: Stratigraphic column

  • 12

    Events chart

    THE NIGER DELTA PROVINCE- PETROLEUM GEOLOGY I SS 2014

    Fig. 13: Petroleum events chart of the Agbada-Akata-formation

  • 13

    Reservoir data analysis

    THE NIGER DELTA PROVINCE- PETROLEUM GEOLOGY I SS 2014Fig. 14: Position of the five oil fields

  • 14

    Reservoir parameters

    THE NIGER DELTA PROVINCE- PETROLEUM GEOLOGY I SS 2014

    Porosity Permeability Water/Hydrocarbon saturation

    Net-to-gross ratio

  • 15

    Reservoirs dataset

    THE NIGER DELTA PROVINCE- PETROLEUM GEOLOGY I SS 2014

    Fig. 15: Petrophysical datas about the five oil fields concidered

  • 16THE NIGER DELTA PROVINCE- PETROLEUM GEOLOGY I SS 2014

    Reservoirs dataset

    Fig. 16: Petrophysical datas about the five oil fields concidered

  • 17

    Graphical explanation

    THE NIGER DELTA PROVINCE- PETROLEUM GEOLOGY I SS 2014 Fig. 17 Graphical representation of the petrophysical parameters

  • 18

    Graphical explanation

    THE NIGER DELTA PROVINCE- PETROLEUM GEOLOGY I SS 2014

    Fig. 18) Comparison of the petrophysical values in the different oil fields

  • 19

    Oil chemical features

    THE NIGER DELTA PROVINCE- PETROLEUM GEOLOGY I SS 2014

    Light oil: Waxy and parafine based

    (5-20%) API gravity: 30-40

    Heavy oil: API gravity: 8-20

    Niger Delta oil: Light oil 85% Heavy oil 15 %

    Fig. 19) Oil properties

  • 20THE NIGER DELTA PROVINCE- PETROLEUM GEOLOGY I SS 2014

    References 1) Wikipedia.org 2) http://education.randmacnally.com/ 3) Google earth 4) modified after Galloway W., 1975 5)+6) Michele W. L. et al., 1999 7)

    http://aapgbull.geoscienceworld.org/content/89/6/753/F2.large.jpg

    8) modified after USGS 9) modified after

    http://aapgbull.geoscienceworld.org/content/89/6/753/F2.large.jpg

    10) modified after Opara, A. I. et al, 2013 11) modified after USGS 12) modified after USGS and Whiteman, 1982 14) modified after Google earth 19) modified after USGS

    THANK YOU FOR YOUR ATTENTION!

    http://education.randmacnally.com/

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