Utjecaj "Microblock"-a na svojstva cementne kaše i tlačnu čvrstoću cementnog kamena

master's thesis

• Title: Utjecaj "Microblock"-a na svojstva cementne kaše i tlačnu čvrstoću cementnog kamena : diplomski rad
• Title (english): Effect of ”Microblock“ on properties of cement slurry and on compressive strength of set cement : master’s thesis
• Author: Matej Šeb
• Mentor: Nediljka Gaurina-Međimurec (mentor)
• Committee member: Nediljka Gaurina-Međimurec (predsjednik povjerenstva)
• Committee member: Zdenko Krištafor (član povjerenstva)
• Committee member: Borivoje Pašić (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: 2018-09-28, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mining, Petroleum and Geology Engineering; Petroleum Mining

Abstract

Cementacija kolona zaštitnih cijevi ovisi o sastavu i svojstvima cementne kaše koja nastaje
miješanjem Portland cementa, aditiva i vode. Cementna kaša će kroz reakcije hidratacije s
vremenom očvrsnuti u cementni kamen odgovarajuće tlačne čvrstoće i odgovarajućih
svojstava. U ovom radu opisani su: bušotinski cement i njegova svojstva, klase cemenata,
hidratacija cementne kaše i njeno očvršćavanje u cementni kamen, svojstva cementnog
kamena, te su prikazani rezultati laboratorijskih ispitivanja utjecaja kvarcnog praha na
svojstva cementne kaše i tlačnu čvrstoću cementnog kamena. Za potrebe ispitivanja korišten
je komercijalno dostupan aditiv trgovačkog naziva „Microblock“ koji je suspenzija finog
kvarcnog praha u vodi. „Microblock“ se dodaje u cementnu kašu koja se primjenjuje u
uvjetima visokih temperatura radi sprječavanja smanjenja tlačne čvrstoće cementnog
kamena. Ispitivanja su provedena s pet cementnih kaša s različitim udjelom „Microblocka“
te je prikazan utjecaj „Microblocka“ na tlačnu čvrstoću cementnog kamena, ali i na svojstva
cementne kaše.

Abstract (english)

Cementation of casing string depends on composition and properties of cement slurry made
by mixing of Portland cement, additives and water. Cement slurry, through reactions of
hydration, hardens into set cement that has to be of sufficient strength and of appropriate
properties. This thesis describes the properties of cement, well cement classes, hydration of
cement slurry and the hardening of cement slurry into set cement. In addition, results of
laboratory testing of the way in which silica fume affects the properties of cement slurry
and compressive strength of set cement are shown. The commercially available adittive
“Microblock“ was used in laboratory testing. This is a suspension of silica fume in water.
”Microblock“ is added during operations in high temperature conditions to prevent set
cement compressive strength retrogression. Five cement slurries with diferent amounts of
”Microblock“ have been tested. The results prove that adding the ”Microblock“ affects the
compresive strength of set cement as well as the properties of cement slurry.

• Keywords: cementacija bušotina; cementna kaša; kvarcni prah; cementni kamen; tlačna čvrstoća
• Keywords (english): well cementing; cement slurry; silica fume; set cement; compressive strength
• Language: croatian
• URN:NBN: urn:nbn:hr:169:405619
• 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: 2018-10-23 09:28:52