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dc.contributor.advisorTutuncu, Azra
dc.contributor.authorAdham, Aidil
dc.contributor.committeememberOzkan, E.
dc.contributor.committeememberMiller, Mark G.
dc.date.accessioned2016-06-30T16:26:50Z
dc.date.available2017-06-29T04:18:44Z
dc.date.issued2016
dc.descriptionIncludes bibliographical references.
dc.description2016 Summer.
dc.description.abstractWellbore instability problems significantly contribute in increasing the cost of drilling and operations of the oil and gas industry. These problems can occur in a variety of forms including stuck pipe, loss circulation, hole enlargement, unintentionally induced tensile fractures or difficult directional control incidents. In this research, we investigate the wellbore instability issues in Field “X”, a mature oil and gas sandstone reservoir located in North Sumatra, Indonesia. An integrated wellbore-stability study was implemented to avoid wellbore instability problems in this field. To narrow down the possible causes of wellbore instabilities in this field, a problem-diagnostic scheme was done by analyzing well logging data, drilling reports, mud logging reports, and pore pressure measurements. The availability of data is the main problem to deliver a good geomechanical model. Numerous methods for data acquisition were discussed in this study to gather reliable geomechanics data as inputs for the model, especially log based methods. Geomechanics model was coupled with mechanical stress, temperature alteration, chemical iteration effects, and flow induced stress using Mohr-Coulomb and Mogi-Coulomb failure criteria. A numerical model was build using MATLAB programming software that results the critical mud weight to avoid wellbore breakout and tensile failure in arbitrary wellbore inclination and azimuth.
dc.format.mediumborn digital
dc.format.mediummasters theses
dc.identifierT 8087
dc.identifier.urihttp://hdl.handle.net/11124/170314
dc.languageEnglish
dc.publisherColorado School of Mines. Arthur Lakes Library
dc.relation.ispartof2016 - Mines Theses & Dissertations
dc.rightsCopyright of the original work is retained by the author.
dc.rights.accessEmbargo Expires: 06/29/2017
dc.subjectgeomechanics
dc.subjectwellbore instability
dc.titleGeomechanics model for wellbore stability analysis in field "X" North Sumatra Basin
dc.typeText
dcterms.embargo.expires2017-06-29
thesis.degree.disciplinePetroleum Engineering
thesis.degree.grantorColorado School of Mines
thesis.degree.levelMasters
thesis.degree.nameMaster of Science (M.S.)


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