Show simple item record

dc.contributor.advisorWempe, Wendy
dc.contributor.authorKerimov, Abdulla
dc.date.accessioned2007-01-03T06:05:49Z
dc.date.accessioned2022-02-09T08:59:41Z
dc.date.available2007-01-03T06:05:49Z
dc.date.available2022-02-09T08:59:41Z
dc.date.issued2014
dc.date.submitted2014
dc.identifierT 7421
dc.identifier.urihttp://hdl.handle.net/11124/301
dc.description2014 Spring.
dc.descriptionIncludes illustrations (some color), color map.
dc.descriptionIncludes bibliographical references (pages 97-99).
dc.description.abstractDetermination of the wettability of rocks is one of the crucial elements in reservoir characterization. It affects the recovery efficiency, relative permeability, and volumetric reserves calculations. Assuming wrong wetting conditions may result in inaccurate reserves estimation and could be detrimental to improved and enhanced hydrocarbon recovery processes. There are several conventional methods based on fluid displacement, such as USBM and Amott-Harvey, to determine wettability indices. However, these methods are time-consuming and expensive in tight unconventional reservoir core plugs. The approach developed by Looyestijn and Hofman (2005) was applied to determine a wettability index of preserved Middle Bakken core plugs using Nuclear Magnetic Resonance (NMR) transverse relaxation time (T2) data. In addition, a new simple approach was developed to predict likelihood wettability indices using the mineralogical content from X-ray Diffraction (XRD) data. The overall goal of computing wettability index (WI) is to identify ways in which we can significantly reduce the amount of time and cost of developing a representative wettability index in preserved Middle Bakken plugs, without changing the preserved state of the core. The main assumption in our approach is that cleaned, adjacent core properties are representative of the preserved core properties, such as helium connected porosity, absolute air permeability, Dean Stark saturation, mineralogy, etc. NMR T2 measurements in the adjacent, cleaned plugs were measured to develop the pore size distribution that is representative of the preserved plugs. To determine NMR wettability indices of the preserved Middle Bakken plugs, T2 relaxation measurements of preserved, and cleaned adjacent brine saturated plugs, bulk produced brine and oil under ambient conditions are used in the Looyestijn and Hofman (2005) NMR forward model. From NMR forward modeling, it is concluded that the preserved Middle Bakken plugs appear to be intermediate to fairly oil-wet. NMR wettability indices vary between -0.04 and -0.54. Also, to predict the wettability indices of the Middle Bakken plugs, a very simple approach based on previously published contact angle measurements on polished carbonate and silicate mineral surfaces was developed. Our results from this analysis conclude that the given plugs are likely oil-wet. Predicted likelihood wettability indices vary between -0.08 and -0.64. Likelihood wettability indices were matched with NMR wettability indices. The significance of this research study is to reduce time and cost in determining the wetted state.
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.subjectwettability
dc.subjectNMR
dc.subjectmineralogy
dc.subject.lcshNuclear magnetic resonance
dc.subject.lcshMineralogy
dc.subject.lcshWetting
dc.subject.lcshPermeability
dc.subject.lcshPorosity
dc.subject.lcshBakken Formation
dc.titleMiddle Bakken wettability evaluation using NMR T2 forward modeling and mineralogy
dc.typeText
dc.contributor.committeememberPrasad, Manika
dc.contributor.committeememberGraves, Ramona M.
dc.contributor.committeememberKazemi, Hossein
thesis.degree.nameMaster of Science (M.S.)
thesis.degree.levelMasters
thesis.degree.disciplinePetroleum Engineering
thesis.degree.grantorColorado School of Mines


Files in this item

Thumbnail
Name:
Kerimov_mines_0052N_10386.pdf
Size:
9.375Mb
Format:
PDF
Description:
Middle Bakken wettability ...

This item appears in the following Collection(s)

Show simple item record