Ispitivanje međupovršinske napetosti pendant drop metodom

master's thesis

• Title: Ispitivanje međupovršinske napetosti pendant drop metodom : diplomski rad
• Title (english): Determinating of interfacial tension using pendant drop method : master’s thesis
• Author: Stipe Matulić
• Mentor: Domagoj Vulin (mentor)
• Committee member: Domagoj Vulin (predsjednik povjerenstva)
• Committee member: Tomislav Kurevija (član povjerenstva)
• Committee member: Željko Andreić (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: 2019-02-15, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mining, Petroleum and Geology Engineering; Petroleum Mining

Abstract

Međupovršinska napetost najvažniji je parametar kemijskog EOR-a. Smanjivanjem međupovršinske napetosti između sirove nafte i vode u ležištima, nafta postaje mobilna faza te se povećava ukupni iscrpak. Pedant drop metoda omogućava brzo i jednostavno određivanje međupovršinske napetosti. Temelji se na analizi fotografije, a razmatra se promjena oblika kapljice fluida koja visi na kapilari okruženom drugim fluidom. Dvije sile koje utječu na promjenu oblika kapljice su gravitacijska sila i međupovršinska napetost. Smanjivanje međupovršinske napetosti postiže se utiskivanjem vodene otopine surfaktanata (površinski aktivnih tvari) u ležište koji se zbog specifične strukture molekula adsorbiraju na površinu kapljica nafte.

Abstract (english)

Interfacial tension is the most important parameter of chemical EOR. The result of lowering the interfacial tension between crude oil and brine is that oil becomes more mobile and therefore, more oil is produced. Pendant drop method is a simple and fast method provides determination of the interfacial tension. The method is based on analysing a change in shape of fluid drop which is suspended from capillary tip and surrounded with another fluid. Forces affecting the shape of a drop are gravity and interfacial tension. Lowering of interfacial tension is achieved by surfactant flooding. The result of the specific molecularstructure of surfactants is adsorbed on the oil drop surface.

• Keywords: međupovršinska napetost; pendant drop; surfaktanti
• Keywords (english): interfacial tension; pendant drop; surfactants
• Language: croatian
• URN:NBN: urn:nbn:hr:169:079326
• 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: 2019-03-07 13:40:24