Applications of Sensitivity Analysis in Petroleum Engineering

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dc.contributor.advisorSrinivasan, Sanjay
dc.creatorLawal, Azeez Adeyinka
dc.date.accessioned2020-04-22T12:42:52Z
dc.date.available2020-04-22T12:42:52Z
dc.date.issued2007-05
dc.description.abstractA crucial question that may be asked during exploratory reservoir analyses and data gathering is: "What is the relative significance of different reservoir parameters?" A parameter is significant if the knowledge of its exact value results in an appreciable reduction in the uncertainty of model estimates. Sensitivity Analysis (SA) quantifies and apportions the uncertainty in a model's estimates based on the uncertainty in the model's parameters. Thus, SA can be used to determine the relative significance of reservoir parameters. This report starts with the SA of four models using differential analysis, regression, correlation and variance-decomposition methods. The models are the bi-linear, polynomial, Stock Tank Oil Originally in Place, and Panda and Lake equations. These models demonstrate the relative merits of the SA methods. The report culminates in the development of a variance-based Monte Carlo (MC) tank model that is useful in the SA of reservoir production rate, pressure and recovery forecasts. The model assumes the reservoir is homogeneous and undersaturated, and that the reservoir is produced by primary depletion mechanisms. It provides a choice between Latin Hypercube and Sobol sampling. These sampling methods are more efficient than conventional MC or random sampling. In the cases considered, the sensitivity effects of different reservoir parameters vary over the producing period. Parameters with negligible main effects can have significant joint effects.en_US
dc.description.departmentPetroleum and Geosystems Engineeringen_US
dc.format.mediumelectronicen_US
dc.identifier.urihttps://hdl.handle.net/2152/80788
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/7803
dc.language.isoengen_US
dc.relation.ispartofUT Electronic Theses and Dissertationsen_US
dc.rightsCopyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.en_US
dc.rights.restrictionRestricteden_US
dc.subjectReservoir analysesen_US
dc.subjectSensitivity analysisen_US
dc.titleApplications of Sensitivity Analysis in Petroleum Engineeringen_US
dc.typeThesisen_US
dc.type.genreThesisen_US
thesis.degree.departmentPetroleum and Geosystems Engineeringen_US
thesis.degree.disciplinePetroleum Engineeringen_US
thesis.degree.grantorUniversity of Texas at Austinen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMasters of Science in Engineeringen_US

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