Petroleum System Identification and Clarification, E.A. Mancini
Petroleum System Identification and Clarification, E.A. Mancini
Petroleum System Identification and Clarification, E.A. Mancini
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<strong>Petroleum</strong> <strong>System</strong><strong>Identification</strong> <strong>and</strong>CharacterizationE. A. <strong>Mancini</strong>
Overview‣ Objective‣ Introduction‣ Potential Source Rocks‣ Smackover Source Rocks‣ <strong>Petroleum</strong> <strong>System</strong>s‣ Conclusions
Objective‣ To provide information on the organic <strong>and</strong>thermal maturation characteristics ofpotential source rocks in the onshoreinterior salt basins of the northern Gulf ofMexico.
Introduction
Gulf Coast Interior Salt Basins
<strong>System</strong>SeriesStageGroupFormationMississippiAlabamaMemberOligoceneRupelianVicksburg(see text for formations)StratigraphyPaleogeneUpper CretaceousPaleoceneEocenePriabonianBartonianLutetianYpresianSel<strong>and</strong>ianDanianMaastrichtianCampanianSantonianConiacianJacksonClaiborneWilcoxMidwaySelmaTuronianTuscaloosaCenomanianMoodys Branch FormationCockfield FormationCook Mountain FormationKosciusko S<strong>and</strong>"lower Lisbon"Zilpha ShaleWinona Fm.Tallahatta Fm. Tallahatta Fm.WilcoxHatchetigbee FormationTuscahoma FormationNanafalia FormationNaheola Formation"Jackson Gas Rock" Porters Creek Clay(Cane River)undifferentiatedMidway undiff.Yazoo Clay(see text for formations)Eutaw FormationUpper Tuscaloosa FormationMarine ShaleLower Tuscaloosa FormationMoodys BranchGosport S<strong>and</strong>"upper Lisbon""middle Lisbon"(see textfor members)(see textfor members)Tombigbee S<strong>and</strong>CretaceousAlbianWashita-FredericksburgundifferentiatedDantzler FormationAndrew FormationPaluxy FormationLower CretaceousAptianBarremianHauterivianBerriasianTithonianCottonValleyMooringsport FormationFerry Lake AnhydriteRodessa FormationJames Limestone/Pine Isl<strong>and</strong> ShaleSligo Formation/Hosston FormationSchuler FormationDorcheatShongalooJurassicUpperJurassicMiddleJurassicKimmeridgianOxfordianCallovianBathonianBajocianHaynesville FormationSmackover FormationNorphlet FormationLouann SaltBuckner Anhydrite"Brown Dense"Pine Hill AnhydriteAalenianWerner AnhydriteTriassicLwr. JurassicHettangian?Rhaetian?Eagle Mills Formation
SequenceStratigraphy
North Louisiana Salt Basin
Mississippi Interior Salt Basin
Conecuh <strong>and</strong> Manila Sub-basinsbasins
Potential Source Rocks‣ Upper Jurassic (Oxfordian, Tithonian)‣ Lower Cretaceous (Albian)‣ Upper Cretaceous (Cenomanian,Turonian)
UpperCretaceousTuscaloosaMarineShaleBelden & Blake Wall 3-9 well5270.5 ft
LowerCretaceousPine Isl<strong>and</strong>ShaleWavel<strong>and</strong> Gas Unit No. 1 well15679 ft.
Upper JurassicSmackover SourceRocks
Smackover Condensed Section
UpperJurassicSmackoverLimeMudstoneL & N Railroad well15535 ft
Smackover Source Rocks‣ Lower <strong>and</strong> Middle Lime Mudstone Beds• Average of 0.81% TOC• High Range of 8.42 to 9.30% TOC• Microbial Kerogen Type• Range of Ro of 0.55 to 4.0%
Thermal MaturationKEROGEN TYPEKEROGEN ALTERATIONMARINECONTINENTALDEPOSITIONAL ENVIRONMENT
Hydrocarbon/Organic Carbon vs Depth
Oil <strong>and</strong> Gas-Condensate Chemical Composition
Oil <strong>and</strong> Gas-Condensate Comparisons
Oil to GasConversion
Oil <strong>and</strong> Gas-CondensateGroups
Oil vsSource RockComparison
St<strong>and</strong>ard Chromatogram
Smackover ChromatogramLake Como Field, Jasper Co, Mi.
Hosston ChromatogramFree State Field, Jones Co, Mi.
Hydrocarbon Gas ChromatogramsLower CretaceousHosston oil from FreeState Field, Jones County,Mississippi.Smackover oil from LakeComo Field, JasperCounty, Mississippi.
Washita ChromatogramMain Pass 253 Field, OCS
Biomarkers HistogramOil from Smackover reservoirTerpanesOil from Washitareservoir
Biomarkers HistogramOil from Smackover reservoirSteranesOil from Washitareservoir
<strong>Petroleum</strong> <strong>System</strong>s
North Louisiana SaltBasinCross SectionsLocation
NNorth Louisiana Salt Basin CrossSectionSVE: 22X
NThermal Maturation Cross Section NLSBSVE: 32X
Burial History Profile NLSB, Sabine Uplift
Thermal Maturation History Profile NLSB, SabineUplift
Hydrocarbon Expulsion Plot NLSB, Sabine Uplift
NNorth Louisiana Salt Basin Cross SectionSVE: 29X
NThermal Maturation Cross Section NLSBSVE: 32X
Burial History Profile NLSB Updip
Thermal Maturation History Profile NLSB Updip
Hydrocarbon Expulsion Plot NLSB Updip
Thermal Maturation History Profile NLSB Downdip
Hydrocarbon Expulsion Plot NLSB Downdip
NNorth Louisiana Salt Basin Cross SectionSVE: 30X
NThermal Maturation Cross Section NLSBSVE: 33X
North Louisiana Salt Basin Cross SectionWEVE: 22X
Thermal Maturation Cross Section NLSBWEVE: 16X
Burial History Profile NLSB, Monroe Uplift
Thermal Maturation History Profile NLSB,Monroe Uplift
Hydrocarbon Expulsion Plot NLSB, Monroe Uplift
Mississippi Interior Salt BasinCross SectionsLocation
NMississippi Interior Salt Basin Cross SectionSVE: 16X
Thermal Maturation Cross Section MISBNSVE: 16X
Burial History Profile MISB Updip
Thermal Maturation History ProfileMISB Updip
Hydrocarbon Expulsion Plot MISB Updip
Burial History Profile MISB Downdip
Thermal Maturation History ProfileMISB Downdip
Hydrocarbon Expulsion Plot MISB Downdip
Smackover-Sourced Sourced Hydrocarbon MigrationPathways in MISB
Pattern of Migration within SouthMississippi Salt BasinEvans, 1987
Patterns of Migration in NorthLouisiana Salt BasinSassen, 1990
Event Chart for Smackover <strong>Petroleum</strong><strong>System</strong> in the North Louisiana <strong>and</strong>Mississippi Interior Salt Basins
Manila <strong>and</strong> Conecuh SubbasinsCross SectionsLocation
NManila <strong>and</strong> Conecuh Subbasins Cross SectionSVE: 24X
NThermal Maturation Cross SectionManila <strong>and</strong> Conecuh SubbasinsSVE: 23X
Burial History Profile Manila Subbasin102520112 BURIAL HIST0JKPalNFmUndiffDepth Subsurface (feet)500010000SelmaEutawTuscaloosaMarine ShaleLower TuscaloosaLower CretaceousPaluxyMooringsportFerry LakeRodessaPine Isl<strong>and</strong>Sligo/HosstonCotton ValleyHaynesvilleBucknerSmackoverNorphletLouann Salt15000200150100500t = 0Age (my)
Thermal Maturation History ProfileManila Subbasin
Hydrocarbon Expulsion PlotManila Subbasin102520112 EXPULSION300JKPalNHQCumulative Hydrocarbon / TOC (mg/g TOC)2001000200150100500in-situOilin-situGasin-situResidueexpelledOilexpelledGasAge (my)
NManila <strong>and</strong> Conecuh Subbasins Cross SectionSVE: 20X
Thermal Maturation Cross SectionManila <strong>and</strong> Conecuh SubbasinsNSVE: 21X
Burial History Profile Conecuh Subbasin0105320007 BURIAL HISTJ K Pal NFmUndiffDepth Subsurface (feet)500010000SelmaEutawTuscaloosaMarine TuscaloosaLowerTuscaloosaLower CretaceousPaluxyMooringsportRodessaPine Isl<strong>and</strong>Sligo/HosstonCotton Valley15000HaynesvilleBuckerSmackoverNorphlet16000200 150 100 50 0Age (my)t = 0
Thermal Maturation History ProfileConecuh Subbasin
Hydrocarbon Expulsion PlotConecuh Subbasin103520008 EXPULSION400JKPalNHQCumulative Hydrocarbon / TOC (mg/g TOC)3002001000200150100500in-situOilin-situGasin-situResidueexpelledOilexpelledGasAge (my)
Event Chart for Smackover <strong>Petroleum</strong><strong>System</strong> in the Manila <strong>and</strong> ConecuhSubbasins
<strong>Petroleum</strong> <strong>System</strong>Characterization Summary‣ Initiation of the generation of crude oil inthe Early to Late Cretaceous <strong>and</strong>continuing into the Cenozoic‣ Commencement of hydrocarbon expulsionin the Early to Late Cretaceous <strong>and</strong>continuing into the Cenozoic‣ Peak hydrocarbon expulsion in the lateEarly to Late Cretaceous
Conclusions‣ Upper Jurassic Smackover lime mudstonebeds served as an effective regionalpetroleum source rock‣ Upper Cretaceous Tuscaloosa Marineshale beds served as a local source rock‣ Upper most Jurassic <strong>and</strong> LowerCretaceous beds were possible sourcerocks
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