Bušenje uz održavanje stalnog tlaka na dno bušotine i "Mud Cap" metoda kao varijante bušenja u uvjetima kontroliranog tlaka

master's thesis

• Title: Bušenje uz održavanje stalnog tlaka na dno bušotine i "Mud Cap" metoda kao varijante bušenja u uvjetima kontroliranog tlaka : diplomski rad
• Title (english): Constant bottom hole pressure drilling and “Mud Cap” drilling as variants of managed pressure drilling : master's thesis
• Author: Andrea Južnić
• Mentor: Borivoje Pašić (mentor)
• Committee member: Borivoje Pašić (predsjednik povjerenstva)
• Committee member: Nediljka Gaurina-Međimurec (član povjerenstva)
• Committee member: Zdenko Krištafor (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: 2020-01-17, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mining, Petroleum and Geology Engineering; Petroleum Mining

Abstract

Predmet istraživanja ovog diplomskog rada su dvije različite metode bušenja u uvjetima kontroliranog tlaka: bušenje uz održavanje stalnog tlaka na dno i „Mud Cap“ metoda bušenja. Potreba za ovakvim metodama bušenja javlja se sve češće, zbog izrade bušotina u dosad tehnološki nedostižnim uvjetima dubine, temperature i tlaka, a uz mogućnost iskorištavanja novih ležišta bušenje u uvjetima kontroliranog tlaka dovodi i do povećanja sigurnosti okoliša, ali i ljudi na bušaćim postrojenjima. Rad opisuje teoretsku podlogu dviju spomenutih metoda bušenja, opremu i njihovu primjenu u različitim slučajevima gdje izrada bušotine konvencionalnim bušenjem nije bila moguća zbog nekontroliranih gubitaka isplake ili pak premalog intervala između gradijenata slojnog tlaka i tlaka frakturiranja naslaga.

Abstract (english)

The subject of this thesis are the two main methods of managed pressure drilling (MPD): the Constant Bottomhole Pressure and the ”Mud Cap“ Drilling method. Lately, these unconventional methods have become more frequently used than ever due to greater than ever depth, pressure and temperature conditions of reservoirs. The other advantages of managed pressure drilling are enhanced safety of people on board of drilling structures, as well as environmental protection. The thesis explains the theoretical background of the two methods, necessary equipment and several case studies of MPD use for different types of wells where conventional drilling method proved unsuccessful due to uncontrollable drilling fluid losses or too small a difference between pore pressure and fraction pressure gradient.

• Keywords: bušenje u uvjetima kontroliranog tlaka; „Mud Cap“ metoda bušenja; bušenje uz održavanje stalnog tlaka na dno; nekonvencionalne metode bušenja
• Keywords (english): managed pressure drilling; constant bottom hole pressure; “Mud Cap” drilling; unconventional drilling methods
• Language: croatian
• URN:NBN: urn:nbn:hr:169:960512
• 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: 2020-02-21 13:58:52