Multiphase flow with CO2 as the displacing phase: digital rock, laboratory, and upscaled analysis

master's thesis

• Title: Multiphase flow with CO2 as the displacing phase: digital rock, laboratory, and upscaled analysis : master's thesis
• Title (croatian): Višefazni protok s CO2 kao istiskujućom fazom: analiza digitalne stijene, laboratorijska analiza i skaliranje : diplomski rad
• Author: Nikolina Sušilović
• Mentor: Domagoj Vulin (mentor)
• Mentor: Marko Gaćina (pomoć pri izradi, neposredni voditelj)
• Committee member: Domagoj Vulin (predsjednik povjerenstva)
• Committee member: Karolina Novak Mavar (član povjerenstva)
• Committee member: Vladislav Brkić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Mining, Geology and Petroleum Engineering; (Department of Petroleum and Gas Engineering and energy); Zagreb
• Defense date and country: 2023-02-24, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mining, Petroleum and Geology Engineering; Petroleum Mining

Abstract

CO2 plume migration was modeled at the reservoir scale. The accuracy of the model highly depends on the geological model and porous media parameters, such as porosity, relative permeability, and capillary pressure relationships. Digital rock tool analysis, including microtomography and pore network modeling, provided the analysis of the flow in porous media and improved understanding of a multiphase flow in CO2-water system. In combination with special core analysis in a laboratory, conducting a steady-state experiment, results were correlated and smoothed to provide an input for numerical simulation of CO2 injection. Simulation results have proved that 250 years after the injection, plume moves until it reaches the top of the structure. The consistency of parameters on all scales, shows a potential of this upscaling approach.

Abstract (croatian)

Migracija oblaka CO2 modelirana je na razini ležišta. Točnost modela uvelike ovisi o geološkom modelu i parametrima poroznog medija, kao što su poroznost, relativna propusnost i odnosi kapilarnog tlaka. Digitalni alati za analizu stijene, uključujući mikrotomografiju i modeliranje mreže pora, omogućili su analizu protoka u poroznim medijima i poboljšali razumijevanje višefaznog protoka u sustavu CO2-voda. U kombinaciji s posebnom analizom jezgre u laboratoriju (SCAL), provođenjem eksperimenta ustaljenog protoka, rezultati su povezani i korelirani kako bi se osigurali ulazni podatci za numeričku simulaciju utiskivanja CO2. Rezultati simulacije su dokazali da se 250 godina nakon utiskivanja oblak kreće sve dok ne dosegne vrh strukture. Dosljednost parametara na svim skalama pokazuje potencijal ovog pristupa skaliranja na više razine.

• Keywords: multiphase flow; CO2-brine relative permeability; capillary pressure; upscaling; pore-scale modeling; microtomography; CO2 injection
• Keywords (croatian): višefazni protok; CO2-voda relativna propusnost; kapilarni tlak; skaliranje na više razine; modeliranje na razini pora; mikrotomografija; utiskivanje CO2
• Language: english
• URN:NBN: urn:nbn:hr:169:108638
• Study programme: Title: Petroleum engineering; specializations in: Petroleum engineering, Energy production and supply, Environmental protection in petroleum engineering; Course: Petroleum engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka naftnog rudarstva (magistar/magistra inženjer/inženjerka naftnog rudarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2023-04-11 09:01:58