Show simple item record

dc.contributor.advisorMiskimins, Jennifer L.
dc.contributor.authorKutun, Kagan
dc.date.accessioned2023-04-25T18:07:50Z
dc.date.available2023-04-25T18:07:50Z
dc.date.issued2022
dc.identifierKutun_mines_0052E_12497.pdf
dc.identifierT 9438
dc.identifier.urihttps://hdl.handle.net/11124/176592
dc.descriptionIncludes bibliographical references.
dc.description2022 Fall.
dc.description.abstractDistributed temperature sensing (DTS) is a valuable diagnostic method that provides insight into completion design efficiency and production performance of unconventional assets. The temperature profiles obtained from these surveys are used to qualitatively and quantitatively assess the multi-stage hydraulic fracture placement efficiency and determine subsequent production profiles in horizontal wells. This work presents a methodology to predict the adverse measurement effect caused by the radial separation of the DTS fiber cable from the casing's outer surface. The methodology was applied on a field data set and the radial separation profiles were predicted using the DTS data and the constructed near-wellbore thermal model. It was found that the field data observed temperature oscillations were corresponding to the radial separation of the cable from the casing. It was determined that the fiber cable can separate as much as 1.36 inches away from the casing which in turn can cause up to a 40 degF deviation from the true temperatures. The initial cooldown from the geothermal temperature was determined to be a critical source of data for quantifying the cable location effect and the cable location profile. Recommendations on acquiring and cataloging DTS data from this portion of the hydraulic fracturing operations are provided. Additionally, the effect of near-wellbore temperature transients on DTS channels were quantified. Using this quantification, a methodology was constructed to predict the near-wellbore temperature distributions using DTS measurements. Synthetic examples along with sensitivities to various parameters are provided. The time behavior of the radius of investigation of the DTS on the near-wellbore temperatures was also calculated and is presented.
dc.format.mediumborn digital
dc.format.mediumdoctoral dissertations
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado School of Mines. Arthur Lakes Library
dc.relation.ispartof2022 - Mines Theses & Dissertations
dc.rightsCopyright of the original work is retained by the author.
dc.subjectdistributed fiber optic sensing
dc.subjectDTS
dc.subjectfiber cable coupling
dc.subjecthorizontal well
dc.subjecttemperature transient
dc.subjectwellbore heat transfer
dc.titleModeling of distributed temperature sensing (DTS) responses and impacts of the cable location in horizontal wells
dc.typeText
dc.date.updated2023-04-22T22:09:50Z
dc.contributor.committeememberOzkan, E.
dc.contributor.committeememberTura, Ali
dc.contributor.committeememberUgueto, Gustavo
dc.contributor.committeememberYin, Xiaolong
dc.contributor.committeememberJin, Ge
dcterms.embargo.expires2024-04-22
thesis.degree.nameDoctor of Philosophy (Ph.D.)
thesis.degree.levelDoctoral
thesis.degree.disciplinePetroleum Engineering
thesis.degree.grantorColorado School of Mines
dc.rights.accessEmbargo Expires: 04/22/2024


Files in this item

Thumbnail
Name:
Kutun_mines_0052E_12497.pdf
Embargo:
2024-04-22
Size:
20.23Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record