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dc.creatorKordi, M.
dc.creatorHovorka, S.
dc.creatorMilliken, K.
dc.creatorTrevino, R.
dc.creatorLu, J.
dc.date.accessioned2018-08-06T21:30:09Z
dc.date.available2018-08-06T21:30:09Z
dc.date.issued2010-10-10
dc.identifierdoi:10.15781/T2862BV92
dc.identifier.citationKordi, M., Hovorka, S., Milliken, K., Treviño, R., and Lu, J., 2010, Diagenesis and reservoir heterogeneity in the Lower Tuscaloosa Formation at Cranfield Field, Mississippi: presented at the 60th Annual Convention of the Gulf Coast Association of Geologicial Societies and the Gulf Coast Section of SEPM, San Antonio, Texas, October 10-12, 2010. GCCC Digital Publication Series #10-13.en_US
dc.identifier.urihttp://hdl.handle.net/2152/65963
dc.description.abstractThe Cretaceous Lower Tuscaloosa Formation in the Cranfield Field, Mississippi, is a siliciclastic reservoir and target for geologic CO2 sequestration and enhanced oil recovery (EOR). The reservoir is approximately 3 km deep with an average thickness of 30 m. Samples and data are from six wells at the Cranfield Field including whole cores from four wells and multiple sidewall cores from two wells. The lower Tuscaloosa Formation consists of fining-upward fluvial cycles. The lowermost parts of the fluvial channels are typically composed of conglomerate, and contain a significant component of chert pebbles. The conglomerate is overlain by light gray course to medium to fine-grained sandstones with minor interbedded mudstone. Petrographic analysis indicates that both original composition and diagenesis extensively affect reservoir heterogeneity. In highly porous and permeable zones, the dominant controls on reservoir quality include the original coarse-grained texture, low compaction, formation of thick chlorite cement rims around grains preventing formation of quartz overgrowth, and formation of secondary porosity by dissolution of rock fragments and cements. Conversely, in the zones of low porosity and permeability, diagenetic events which are the most destructive of reservoir quality include high compaction, formation of carbonate, authigenic kaolinite, Feoxide and quartz cement. The presence of thin chlorite cement rims in the upper portion of the reservoir did not prevent formation of quartz overgrowths which is, overall, the most important factor reducing the porosity and permeability.en_US
dc.language.isoengen_US
dc.publisher60th Annual Convention of the Gulf Coast Association of Geologicial Societies and the Gulf Coast Section of SEPMen_US
dc.relation.ispartofGCCC Presentations and Slidesen_US
dc.relation.ispartofseriesGCCC Digital Publication Series;10-13
dc.subjectcharacterizationen_US
dc.subjectCO2-EOR (Enhanced oil recovery)en_US
dc.subjectPetrographyen_US
dc.titleDiagenesis and reservoir heterogeneity in the Lower Tuscaloosa Formation at Cranfield Field, Mississippien_US
dc.typePresentationen_US
dc.description.departmentBureau of Economic Geologyen_US
dc.rights.restrictionOpenen_US


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