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dc.contributor.advisorHoffman, B. Todd
dc.contributor.authorKumar, Sanyog
dc.date.accessioned2007-01-03T06:06:44Z
dc.date.accessioned2022-02-09T09:05:20Z
dc.date.available2007-01-03T06:06:44Z
dc.date.available2022-02-09T09:05:20Z
dc.date.issued2014
dc.date.submitted2014
dc.identifierT 7438
dc.identifier.urihttp://hdl.handle.net/11124/361
dc.description2014 Spring.
dc.descriptionIncludes illustrations (some color), color maps.
dc.descriptionIncludes bibliographical references (pages 94-96).
dc.description.abstractThere is an uncertainty over the Upper and Lower (U&L) Bakken Shale production contribution to the Middle Bakken reservoir. For the Bakken system, a reliable degree of accuracy in the reservoir studies involving the fluid flow and recovery mechanism cannot be achieved without resolving this uncertainty. Performance anomalies in the gas-oil ratio (GOR) trends of the production history of the Middle Bakken wells in the Reunion Bay, Sanish, Parshall and the Elkhorn Ranch fields indicate the possibility of the anticipated contribution. Quantifying the U&L Shale contribution requires knowledge of the mechanism of fluid storage and flow in the liquid rich shale systems. For the U&L Shale, adsorption is considered as the primary mode of fluid storage, and the process of diffusion is considered crucial for the matrix-to-fracture fluid transfer. The governing mathematical equations for desorption and diffusion was adopted for shale gas systems. These equations are incorporated in Computer Modeling Group's (CMG[trademark]) compositional simulator GEM[trademark] to propose a reservoir simulation-based quantification scheme for the U&L Shale contribution. Through the sensitivity analyses, the effect of variation in the parameters of the U&L Shale, the Middle Bakken layer and the hydraulic fracture is investigated. Utilizing the surveyed numerical value-ranges of these parameters, the U&L Shale layers are found to contribute in the range of 12 to 52% of the cumulative production from a Middle Bakken well. Whereas, utilizing the mean numerical values of the parameters, the contribution is quantified as 40%. Relative sensitivity study suggested that the U&L Shale production contribution is the most sensitive to the U&L Shale matrix parameters, such as total organic carbon (TOC, wt.%) and molecular diffusion coefficients. The TOC controls the desorption-parameters; therefore, the findings suggest that the phenomena of desorption and diffusion are expected to play a crucial role in the anticipated production-contribution.
dc.format.mediumborn digital
dc.format.mediummasters theses
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado School of Mines. Arthur Lakes Library
dc.relation.ispartof2014 - Mines Theses & Dissertations
dc.rightsCopyright of the original work is retained by the author.
dc.subjectUpper and Lower Shale
dc.subjectshale oil
dc.subjectdesorption
dc.subjectBakken
dc.subject.lcshShale oils -- Bakken Formation
dc.subject.lcshShale gas -- Bakken Formation
dc.subject.lcshOil reservoir engineering -- Mathematical models
dc.subject.lcshPetroleum -- Migration -- Bakken Formation
dc.subject.lcshFluid dynamics
dc.subject.lcshPorosity
dc.subject.lcshBakken Formation
dc.titleUpper and Lower Bakken shale production contribution to the Middle Bakken reservoir
dc.typeText
dc.contributor.committeememberSonnenberg, Stephen A.
dc.contributor.committeememberKazemi, Hossein
dc.contributor.committeememberPrasad, Manika
thesis.degree.nameMaster of Science (M.S.)
thesis.degree.levelMasters
thesis.degree.disciplinePetroleum Engineering
thesis.degree.grantorColorado School of Mines


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