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Applicability of Theoretical Rock Physics Models in Porous Rock Microgeometries: A Computational Modeling Study
Applicability of Theoretical Rock Physics Models in Porous Rock Microgeometries: A Computational Modeling Study
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260311091518.5
- ISBN
- 9798270229542
- DDC
- 006.3
- 서명/저자
- Applicability of Theoretical Rock Physics Models in Porous Rock Microgeometries: A Computational Modeling Study / Osama Abdulaziz Alnasery
- 발행사항
- [Sl] : The University of Texas at Austin, 2025
- 형태사항
- 1 electronic resource (164 pages)
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-06, Section: B.
- 주기사항
- Advisors: Spikes, Kyle T. Committee members: Ketcham, Richard A.; Sylvester, Zoltan; Tisato, Nicola; Bakulin, Andrey.
- 학위논문주기
- - Ph.D. : The University of Texas at Austin, 2025.
- 초록/해제
- 요약The microgeometries of porous reservoir rocks influence the elastic properties of the rock but are handled differently depending on the technique used. Laboratory measurements are performed on real rock samples that contain the true microgeometries, whereas digital images of these rocks are often limited in size and resolution, thereby affecting their accuracy in calculating the exact elastic properties of the sample. Theoretical models assign simplified geometries, such as a pore aspect ratio, to represent the complex pore microstructure.In this dissertation, I demonstrate the agreement between theoretical rock-physics models and digital rock physics and present correction procedures that enable the use of these techniques with one another. I utilize numerical simulations to calculate elastic properties of synthetic rock samples and micro-CT images. I compare these results with commonly used inclusion-based models to determine the necessary corrections that enable the use of these models with simulations.The first part of the dissertation defines the methodology used to correlate simulation results with theoretical models. I developed a transform that corrects the differential effective medium (DEM) to match the simulations. The strong correlation between the simulations and the DEM provided the base framework upon which the remainder of the work was performed. The second part presents a methodology to define the relations among the different pore shapes in geometries with mixed aspect ratios. I developed a relation that corrects for the overprediction of elastic properties calculated with pores of mixed aspect ratios. The last part applies the relations and corrections presented in part one and two on digital images of real rocks. Elastic properties calculated with the corrections developed in this work produced significantly smaller residuals in comparison to the traditional model.The procedures I developed serve as a framework for creating robust relationships between models and simulations. The results showcase the flexibility in using digital representations of real and synthetic structures. This flexibility allows for compatibility and sensitivity tests tailored to specific parameters of interest. Future work includes applying the developed relations in methodologies that utilize both DEM and simulations and expanding the procedures to mixtures of real structures.
- 언어주기
- English
- 일반주제명
- Geophysics
- 일반주제명
- Geotechnology
- 일반주제명
- Petrology
- 기타저자
- The University of Texas at Austin Earth and Planetary Sciences
- 기본자료저록
- Dissertations Abstracts International. 87-06B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260311091518.5
■006m o d
■007cr|nu||||||||
■020 ▼a9798270229542
■040 ▼aMiAaPQD▼beng▼cMiAaPQD▼erda
■082 ▼a006.3
■1001 ▼aAlnasery, Osama Abdulaziz▼eauthor.
■24510▼aApplicability of Theoretical Rock Physics Models in Porous Rock Microgeometries: A Computational Modeling Study ▼cOsama Abdulaziz Alnasery
■260 ▼a[Sl]▼bThe University of Texas at Austin▼c2025
■264 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a1 electronic resource (164 pages)
■336 ▼atext▼btxt▼2rdacontent
■337 ▼acomputer▼bc▼2rdamedia
■338 ▼aonline resource▼bcr▼2rdacarrier
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-06, Section: B.
■500 ▼aAdvisors: Spikes, Kyle T. Committee members: Ketcham, Richard A.; Sylvester, Zoltan; Tisato, Nicola; Bakulin, Andrey.
■5021 ▼bPh.D.▼cThe University of Texas at Austin▼d2025.
■520 ▼aThe microgeometries of porous reservoir rocks influence the elastic properties of the rock but are handled differently depending on the technique used. Laboratory measurements are performed on real rock samples that contain the true microgeometries, whereas digital images of these rocks are often limited in size and resolution, thereby affecting their accuracy in calculating the exact elastic properties of the sample. Theoretical models assign simplified geometries, such as a pore aspect ratio, to represent the complex pore microstructure.In this dissertation, I demonstrate the agreement between theoretical rock-physics models and digital rock physics and present correction procedures that enable the use of these techniques with one another. I utilize numerical simulations to calculate elastic properties of synthetic rock samples and micro-CT images. I compare these results with commonly used inclusion-based models to determine the necessary corrections that enable the use of these models with simulations.The first part of the dissertation defines the methodology used to correlate simulation results with theoretical models. I developed a transform that corrects the differential effective medium (DEM) to match the simulations. The strong correlation between the simulations and the DEM provided the base framework upon which the remainder of the work was performed. The second part presents a methodology to define the relations among the different pore shapes in geometries with mixed aspect ratios. I developed a relation that corrects for the overprediction of elastic properties calculated with pores of mixed aspect ratios. The last part applies the relations and corrections presented in part one and two on digital images of real rocks. Elastic properties calculated with the corrections developed in this work produced significantly smaller residuals in comparison to the traditional model.The procedures I developed serve as a framework for creating robust relationships between models and simulations. The results showcase the flexibility in using digital representations of real and synthetic structures. This flexibility allows for compatibility and sensitivity tests tailored to specific parameters of interest. Future work includes applying the developed relations in methodologies that utilize both DEM and simulations and expanding the procedures to mixtures of real structures.
■546 ▼aEnglish
■590 ▼aSchool code: 0227
■650 4▼aGeophysics
■650 4▼aGeotechnology
■650 4▼aPetrology
■653 ▼aElastic properties
■653 ▼aRock-physics models
■653 ▼aDifferential effective medium
■653 ▼aDigital representations
■7102 ▼aThe University of Texas at Austin▼bEarth and Planetary Sciences.▼edegree granting institution.
■7201 ▼aSpikes, Kyle T.▼edegree supervisor.
■7730 ▼tDissertations Abstracts International▼g87-06B.
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17361153▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
