Pribušotinska oštećenja ležišnih stijena i njihovo uklanjanje kiselinskim obradama na primjeru pješčenjaka i karbonata

master's thesis

• Title: Pribušotinska oštećenja ležišnih stijena i njihovo uklanjanje kiselinskim obradama na primjeru pješčenjaka i karbonata : diplomski rad
• Title (english): Near wellbore damage of reservoir rocks and the removal of the damage trough the procedure of acidizing, on the example of sandstone and carbonate reservoirs : master's thesis
• Author: Filip Hudin
• Mentor: Vladislav Brkić (mentor)
• Committee member: Vladislav Brkić (predsjednik povjerenstva)
• Committee member: Sonja Koščak Kolin (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: 2023-02-17, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mining, Petroleum and Geology Engineering; Petroleum Mining

Abstract

Kiselinske obrade ležišnih stijena jedna su od metoda stimulacije ležišta. Najjeftinija i najčešće korištena među njima je kiselinska obrada skeleta ležišne stijene, koja se temelji na utiskivanju kiseline u ležište, pri tlaku manjem od tlaka frakturiranja stijena. Kroz ovaj diplomski rad opisani su mehanizmi oštećenja ležišnih stijena te načini na koji se ta oštećenja manifestiraju, poput skin faktora. Također se u radu opisuju osnovni principi uklanjanja oštećenja ležišnih stijena hidrauličkim frakturiranjem kiselinom i kiselinskom obradom skeleta ležišne stijene. Dalje se opisuju kiseline korištene u takvim obradama te aditivi koji se dodaju u kiseline s ciljem prilagođavanja svake obrade specifičnim uvjetima u kojima se izvodi. U radu se stavlja naglasak na kiselinske obrade skeleta ležišne stijene zbog njihove ekonomičnosti i široke primjene. Detaljno su opisani postupci dizajniranja kiselinskih obrada skeleta ležišnih stijena karbonata i pješčenjaka. Ti postupci nisu samo opisani, već su i prikazani na primjerima kiselinske obrade skeleta izvedenih u Republici Hrvatskoj.

Abstract (english)

Acidizing oil wells is a way of stimulating hydrocarbon reservoirs. The cheapest and most frequently used method of acidizing is matrix acidizing, which relies on pumping acid into the reservoir, at pressure rates which won't cause reservoir fracturing. This thesis defines wellbore damage, the mechanisms which cause it and how the damage is manifested, such as skin factor. Furthermore it describes the principles of damage removal trough the procedures of fracture acidization and matrix acidizing. It also describes the acids used in the procedures, as well as the additives used to design the acid for the specific conditions of every procedure. The thesis focuses on matrix acidizing, because of its cost-effectiveness and wide spread usage. It describes in detail the procedures of matrix acidizing of both sandstones and carbonates. These procedures are not only described, but also show using two real time examples.

• Keywords: kiselinske obrade; kiselinske obrade skeleta ležišne stijene; oštećenja ležišne stijene; karbonati; pješčenjaci
• Keywords (english): oil well acidizing; matrix acidizing; wellbore damage; sandstones; carbonates
• Language: croatian
• URN:NBN: urn:nbn:hr:169:014196
• 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: 2023-04-04 13:50:00