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Paul Perron PhD thesis

Reservoirs architecture control by tectonic and lithosphere heterogeneities in intracratonic Paleozoic basins

Defended on the  27th June 2019

Funding: ENGIE

uB supervisors: Michel Guiraud and Emmanuelle Vennin

ENGIE supervisor: Eric Portier, Isabelle Moretti

UPMC supervisor: Laetitia le Pouhriet

Started in November 2015

 

Abstract

Paleozoic intracratonic basins (of Gondwana especially) are characterized by a slow subsidence, large wavelength of a few 100’s km, regular rejuvenation of paleohighs not easily related to global geodynamic cycles. Frequent regional unconformities, and subtle and complex facies portioning (architecture) make reservoir prediction complicated. Petroleum systems associated to these basins are among the most prolific, either as conventional plays, or as more challenging plays, such as stratigraphic traps and shales gas (oil).

Main features of these intracratonic basins are not well characterized and are still debated. The objectives of this project is therefore to adress the following questions:
Which are the driving mechanisms of these slow subsidence rate basins?
How can we characterize crustal and lithospheric deformations, and associated stress? What is the nature of the apparently permanent lithospheric & rheologogical heterogeneities through 100 millions years?
What are the control & trigger of the regular uplifts through time of inherited paleohighs and of the extensive & coeval unconformities / hiatuses?
Which are the controlling factors of the sedimentary record, the reservoir architecture and facies distribution – conventional as well as shale?

Keywords

intracratonic basin, Paleozoic , heritage , heterogeneity, lithosphere

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Reservoirs architecture control by tectonic and lithosphere heterogeneities in intracratonic Paleozoic basins

Defended on the  27th June 2019

Funding: ENGIE

uB supervisors: Michel Guiraud and Emmanuelle Vennin

ENGIE supervisor: Eric Portier, Isabelle Moretti

UPMC supervisor: Laetitia le Pouhriet

Started in November 2015

 

Abstract

Paleozoic intracratonic basins (of Gondwana especially) are characterized by a slow subsidence, large wavelength of a few 100’s km, regular rejuvenation of paleohighs not easily related to global geodynamic cycles. Frequent regional unconformities, and subtle and complex facies portioning (architecture) make reservoir prediction complicated. Petroleum systems associated to these basins are among the most prolific, either as conventional plays, or as more challenging plays, such as stratigraphic traps and shales gas (oil).

Main features of these intracratonic basins are not well characterized and are still debated. The objectives of this project is therefore to adress the following questions:
Which are the driving mechanisms of these slow subsidence rate basins?
How can we characterize crustal and lithospheric deformations, and associated stress? What is the nature of the apparently permanent lithospheric & rheologogical heterogeneities through 100 millions years?
What are the control & trigger of the regular uplifts through time of inherited paleohighs and of the extensive & coeval unconformities / hiatuses?
Which are the controlling factors of the sedimentary record, the reservoir architecture and facies distribution – conventional as well as shale?

Keywords

intracratonic basin, Paleozoic , heritage , heterogeneity, lithosphere

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