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  1. ❍✐❣❤ P❡r❢♦r♠❛♥❝❡ ❈♦♠♣✉t✐♥❣ ❆❧❣♦r✐t❤♠ ❉❡s✐❣♥ ❛♥❞ ◆♦✈❡❧ ❈♦♠♣✉t✐♥❣ ❊♥✈✐r♦♥♠❡♥ts ❊❡r♦ ❱❛✐♥✐❦❦♦ ■♥st✐t✉t❡ ♦❢ ❈♦♠♣✉t❡r ❙❝✐❡♥❝❡✱ ❉✐str✐❜✉t❡❞ ❙②st❡♠s ❘❡s❡❛r❝❤ ●r♦✉♣ ❈❉❈ ✭ ❈❡♥tr❡ ❢♦r ❉❡♣❡♥❞❛❜❧❡ ❈♦♠♣✉t✐♥❣ ✮ ❋♦❧❧♦✇✲✉♣ ❲♦r❦s❤♦♣ ❚❛❧❧✐♥♥✱ ✷✶✲✷✷ ❏❛♥✉❛r② ✷✵✵✽

  2. ❖✉t❧✐♥❡ ✶ P❛rt ■ ■♥tr♦❞✉❝t✐♦♥✿ t❛r❣❡t ♣r♦❜❧❡♠s ❙②st❡♠s ♦❢ ❧✐♥❡❛r ❡q✉❛t✐♦♥s ❊①❛♠♣❧❡s ✷ ❙♦❧✈✐♥❣ ▲❛r❣❡ ❙②st❡♠s ♦❢ ▲✐♥✳ ❊q✳ ❉✐r❡❝t ♦r ■t❡r❛t✐✈❡ ▼❡t❤♦❞s❄ ❉♦♠❛✐♥ ❉❡❝♦♠♣♦s✐t✐♦♥ ✸ ❉❖❯● ❉❖❯● ✕ ❢❛st ♣❛r❛❧❧❡❧ ❜❧❛❝❦ ❜♦① s♦❧✈❡r ❉❖❯● ✫ ❛❣❣r❡❣❛t✐♦♥ ❉❖❯● ♦♥ ❡①t❡♥❞❡❞ ❛r❝❤✐t❡❝t✉r❡s ✹ P❛rt ■■ ◆♦✈❡❧ ❈♦♠♣✉t✐♥❣ ❊♥✈✐r♦♥♠❡♥ts ●r✐❞ ❉❡s❦t♦♣ ●r✐❞ ❙♦❧✉t✐♦♥s ▼✐♥✐♠✉♠ ■♥tr✉s✐♦♥ ●r✐❞ ❋r✐❡♥❞✲t♦✲❢r✐❡♥❞ ❈♦♠♣✉t✐♥❣

  3. P❛rt ■ ■♥tr♦❞✉❝t✐♦♥✿ t❛r❣❡t ♣r♦❜❧❡♠s ❙♦❧✈✐♥❣ ▲❛r❣❡ ❙②st❡♠s ♦❢ ▲✐♥✳ ❊q✳ ❙②st❡♠s ♦❢ ❧✐♥❡❛r ❡q✉❛t✐♦♥s ❉❖❯● ❊①❛♠♣❧❡s P❛rt ■■ ◆♦✈❡❧ ❈♦♠♣✉t✐♥❣ ❊♥✈✐r♦♥♠❡♥ts ❚❛r❣❡t ♣r♦❜❧❡♠s ❙♦❧✈❡ t❤❡ s②st❡♠ ♦❢ ❧✐♥❡❛r ❡q✉❛t✐♦♥s ❆ ① = ❜ ✇❤❡r❡ t❤❡ ♠❛tr✐① ❆ ✐s✿ s♣❛rs❡✱ ❧❛r❣❡✱ ✇✐t❤ ❤✐❣❤❧② ✈❛r②✐♥❣ ❝♦❡✣❝✐❡♥ts ✭❢♦r ❡①❛♠♣❧❡✱ | ❛ ✐❥ | ∈ [ ✶✵ − ✻ , ✶✵ ✻ ] ✮ ❊❡r♦ ❱❛✐♥✐❦❦♦ ❍P❈ ❆❧❣♦r✐t❤♠s ❛♥❞ ◆♦✈❡❧ ❈♦♠♣✉t✐♥❣ ❊♥✈✐r♦♥♠❡♥ts

  4. P❛rt ■ ■♥tr♦❞✉❝t✐♦♥✿ t❛r❣❡t ♣r♦❜❧❡♠s ❙♦❧✈✐♥❣ ▲❛r❣❡ ❙②st❡♠s ♦❢ ▲✐♥✳ ❊q✳ ❙②st❡♠s ♦❢ ❧✐♥❡❛r ❡q✉❛t✐♦♥s ❉❖❯● ❊①❛♠♣❧❡s P❛rt ■■ ◆♦✈❡❧ ❈♦♠♣✉t✐♥❣ ❊♥✈✐r♦♥♠❡♥ts ▲✐t❤♦❧♦❣② ❡①❛♠♣❧❡ ❙❡❞✐♠❡♥t❛r② ❜❛s✐♥ s✐♠✉❧❛t✐♦♥ N Turonian Up. Cenomanian 40 km Reservoirs Reservoirs Loeme Salt Chela Senonian Sandstones Sialivakou Source Rock Vandji Sandstones Salt Sandstones Regional Seal P♦s✐t✐♦♥ ♦❢ t❤❡ st✉❞✐❡❞ ❛r❡❛ ▲✐t❤♦❧♦❣② ♦❢ t❤❡ st✉❞✐❡❞ ✸❉✲❜❧♦❝❦ ✭❚❛❦❡♥ ❋r♦♠ ❋✳❙❝❤♥❡✐❞❡r ❊t ❆❧✳ ❖✐❧ ✫ ●❛s ❙❝✐❡♥❝❡ ❆♥❞ ❚❡❝❤♥♦❧♦❣② ✺✺ ✭✶✮✱ ✷✵✵✵✮ ❊❡r♦ ❱❛✐♥✐❦❦♦ ❍P❈ ❆❧❣♦r✐t❤♠s ❛♥❞ ◆♦✈❡❧ ❈♦♠♣✉t✐♥❣ ❊♥✈✐r♦♥♠❡♥ts

  5. P❛rt ■ ■♥tr♦❞✉❝t✐♦♥✿ t❛r❣❡t ♣r♦❜❧❡♠s ❙♦❧✈✐♥❣ ▲❛r❣❡ ❙②st❡♠s ♦❢ ▲✐♥✳ ❊q✳ ❙②st❡♠s ♦❢ ❧✐♥❡❛r ❡q✉❛t✐♦♥s ❉❖❯● ❊①❛♠♣❧❡s P❛rt ■■ ◆♦✈❡❧ ❈♦♠♣✉t✐♥❣ ❊♥✈✐r♦♥♠❡♥ts ❈♦♥❣♦ ❖✛s❤♦r❡ ♦✐❧ r❡s❡r✈♦✐r s✐♠✉❧❛t✐♦♥ ◆✉♠❡r✐❝❛❧ ❘❡s✉❧ts ✭❈♦♥❣♦ ❖✛s❤♦r❡✮ Vandji Sandstones Lower Cenomanian Oil Saturation 0.95 0.00 Upper Cenomanian Turonian ❈♦♠♣✉t❡❞ ♦✐❧ s❛t✉r❛t✐♦♥ ❢♦r t❤❡ ♣♦t❡♥t✐❛❧ r❡s❡r✈♦✐r ❧❡✈❡❧s ❛t ♣r❡s❡♥t ❞❛② ✭❚❛❦❡♥ ❢r♦♠ ④❋✳❙❝❤♥❡✐❞❡r ❡t ❛❧✳ ❖✐❧ ✫ ●❛s ❙❝✐❡♥❝❡ ❛♥❞ ❚❡❝❤♥♦❧♦❣② ✺✺ ✭✶✮✱ ✷✵✵✵✮✮ ❊❡r♦ ❱❛✐♥✐❦❦♦ ❍P❈ ❆❧❣♦r✐t❤♠s ❛♥❞ ◆♦✈❡❧ ❈♦♠♣✉t✐♥❣ ❊♥✈✐r♦♥♠❡♥ts

  6. P❛rt ■ ■♥tr♦❞✉❝t✐♦♥✿ t❛r❣❡t ♣r♦❜❧❡♠s ❙♦❧✈✐♥❣ ▲❛r❣❡ ❙②st❡♠s ♦❢ ▲✐♥✳ ❊q✳ ❙②st❡♠s ♦❢ ❧✐♥❡❛r ❡q✉❛t✐♦♥s ❉❖❯● ❊①❛♠♣❧❡s P❛rt ■■ ◆♦✈❡❧ ❈♦♠♣✉t✐♥❣ ❊♥✈✐r♦♥♠❡♥ts ❙❡❧❧❛✜❡❧❞ ●r♦✉♥❞✇❛t❡r ✢♦✇✱ ❚❡st ❝❛s❡ ✏❙❡❧❧❛✜❡❧❞✑ ❊❡r♦ ❱❛✐♥✐❦❦♦ ❍P❈ ❆❧❣♦r✐t❤♠s ❛♥❞ ◆♦✈❡❧ ❈♦♠♣✉t✐♥❣ ❊♥✈✐r♦♥♠❡♥ts

  7. P❛rt ■ ■♥tr♦❞✉❝t✐♦♥✿ t❛r❣❡t ♣r♦❜❧❡♠s ❙♦❧✈✐♥❣ ▲❛r❣❡ ❙②st❡♠s ♦❢ ▲✐♥✳ ❊q✳ ❉✐r❡❝t ♦r ■t❡r❛t✐✈❡ ▼❡t❤♦❞s❄ ❉❖❯● ❉♦♠❛✐♥ ❉❡❝♦♠♣♦s✐t✐♦♥ P❛rt ■■ ◆♦✈❡❧ ❈♦♠♣✉t✐♥❣ ❊♥✈✐r♦♥♠❡♥ts ❉✐r❡❝t ♠❡t❤♦❞s ❯▼❋P❆❈❑✱ ❙✉♣❡r▲❯✱ ▼❯▼P❙✱ P❛r❞✐s♦ ✶ ❆♥❛❧②s✐♥❣ t❤❡ s♣❛rs✐t② str✉❝t✉r❡ t♦ ✐♥tr♦❞✉❝❡ ❧❡ss ✜❧❧✲✐♥ ✈✐❛ r❡✲♦r❞❡r✐♥❣ ✷ ❋❛❝t♦r✐s❛t✐♦♥ st❡♣ ✸ ❙♦❧✈✐♥❣ st❡♣ ❘♦✉❣❤❧② ✶✵✵✭✶✮✲✶✵✭✷✮✲✶✭✸✮ t✐♠❡ ❢❛❝t♦r ✷❉ ✲ ♦❢t❡♥ st✐❧❧ ❖❑✱ ✸❉ ✲ t❤❡ ✜rst st❡♣ ❜❡❝♦♠❡s t♦♦ ❡①♣❡♥s✐✈❡✱ ❛♥❞ st✐❧❧✱ t❤❡ ✜❧❧✲✐♥ st❛rts ❞♦♠✐♥❛t✐♥❣✳ ❊❡r♦ ❱❛✐♥✐❦❦♦ ❍P❈ ❆❧❣♦r✐t❤♠s ❛♥❞ ◆♦✈❡❧ ❈♦♠♣✉t✐♥❣ ❊♥✈✐r♦♥♠❡♥ts

  8. P❛rt ■ ■♥tr♦❞✉❝t✐♦♥✿ t❛r❣❡t ♣r♦❜❧❡♠s ❙♦❧✈✐♥❣ ▲❛r❣❡ ❙②st❡♠s ♦❢ ▲✐♥✳ ❊q✳ ❉✐r❡❝t ♦r ■t❡r❛t✐✈❡ ▼❡t❤♦❞s❄ ❉❖❯● ❉♦♠❛✐♥ ❉❡❝♦♠♣♦s✐t✐♦♥ P❛rt ■■ ◆♦✈❡❧ ❈♦♠♣✉t✐♥❣ ❊♥✈✐r♦♥♠❡♥ts ■t❡r❛t✐✈❡ ♠❡t❤♦❞s ❘✐❝❤❛r❞s♦♥✬s✱ ❑r②❧♦✈ s✉❜s♣❛❝❡ ♠❡t❤♦❞s✱ ▼✉❧t✐●r✐❞ ❘✐❝❤❛r❞s♦♥✬s t②♣❡ ✐t❡r❛t✐♦♥s ❑r②❧♦✈ s✉❜s♣❛❝❡ ♠❡t❤♦❞s ●❡♦♠❡tr✐❝ ♠✉❧t✐❣r✐❞ ❆❧❣❡❜r❛✐❝ ♠✉❧t✐❣r✐❞ ✲ ❢✲❝ ❝♦❧♦✉r✐♥❣ ✲ ❛❣❣r❡❣❛t✐♦♥✲❜❛s❡❞ ❊❡r♦ ❱❛✐♥✐❦❦♦ ❍P❈ ❆❧❣♦r✐t❤♠s ❛♥❞ ◆♦✈❡❧ ❈♦♠♣✉t✐♥❣ ❊♥✈✐r♦♥♠❡♥ts

  9. P❛rt ■ ■♥tr♦❞✉❝t✐♦♥✿ t❛r❣❡t ♣r♦❜❧❡♠s ❙♦❧✈✐♥❣ ▲❛r❣❡ ❙②st❡♠s ♦❢ ▲✐♥✳ ❊q✳ ❉✐r❡❝t ♦r ■t❡r❛t✐✈❡ ▼❡t❤♦❞s❄ ❉❖❯● ❉♦♠❛✐♥ ❉❡❝♦♠♣♦s✐t✐♦♥ P❛rt ■■ ◆♦✈❡❧ ❈♦♠♣✉t✐♥❣ ❊♥✈✐r♦♥♠❡♥ts ❉♦♠❛✐♥ ❉❡❝♦♠♣♦s✐t✐♦♥ ❆❞❞✐t✐✈❡ ❙❝❤✇❛r③ ♠❡t❤♦❞s ◆♦♥✲♦✈❡r❧❛♣♣✐♥❣ ♠❡t❤♦❞s s✉❜str✉❝t✉r✐♥❣ ♠❡t❤♦❞s✱ ❛❞❞✐t✐✈❡ ❛✈❡r❛❣❡ ♠❡t❤♦❞s ❛♥❞ ♦t❤❡rs✳ ❖✈❡r❧❛♣♣✐♥❣ ♠❡t❤♦❞s d O1 O2 O3 O4 h H H0 ❊❡r♦ ❱❛✐♥✐❦❦♦ ❍P❈ ❆❧❣♦r✐t❤♠s ❛♥❞ ◆♦✈❡❧ ❈♦♠♣✉t✐♥❣ ❊♥✈✐r♦♥♠❡♥ts

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