Geology 1.ppt - CHE- 350 CHE- 350 Introduction • What is...

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CHE- 350CHE- 350
CHE- 350CHE- 350
IntroductionIntroductionWhat isApplied Geoscience & GeophysicsorPetroleum Geoscience?The disciplines of geology and geophysicsapplied to understanding theoriginanddistribution,andpropertiesof petroleum andpetroleum-bearing rocks.Theimportanceof petroleum geoscience is tofind petroleumandhelp produceit.
Basic GeologicalBasic GeologicalPrinciplesPrinciplesTo become a petroleum province, fiveingredientsare involved;the source,seal,trap,reservoir,andtiming of petroleum migration.These elementsPetroleum system
Basic GeologicalBasic GeologicalPrinciplesPrinciples
Basic GeologicalBasic GeologicalPrinciplesPrinciplesThe source:Asource rockis asedimentary rockthatcontains sufficientorganic matter, when it isburied and heated it willproduce petroleum.
Basic Geological PrinciplesBasic Geological PrinciplesHigh concentrations oforganic mattertend tooccur insedimentsthat accumulate in areasof high organic matter productivity andstagnant water.Topreserveorganic matter, theoxygencontentsof the bottom waters and interstitialwaters of the sediment need to be very lowor zero, and a rapid sedimentation rate.
Basic Geological PrinciplesBasic Geological PrinciplesThe Seal:Seals tend to befine-grainedorcrystalline, low-permeabilityrocks. Typical examplesincludemudstone/shale,cemented limestones, cherts,anhydrite, and salt (halite).
Basic Geological PrinciplesBasic Geological PrinciplesSeals to fluid flow can also develop alongfaultplanes, faulted zones,andfractures.The presence of a seal or seals is critical forthe development ofaccumulations ofpetroleumin the subsurface.
Basic Geological PrinciplesBasic Geological PrinciplesThe Trap:Thegeometryof the sealed petroleum-bearingcontainer.

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