Razmatranja kontrole tlaka u podvodnom bušenju

master's thesis

• Title: Razmatranja kontrole tlaka u podvodnom bušenju : diplomski rad
• Title (english): Subsea well control considerations : master’s thesis
• Author: Mate Ledenko
• Mentor: Zdenko Krištafor (mentor)
• Committee member: Zdenko Krištafor (predsjednik povjerenstva)
• Committee member: Nediljka Gaurina-Međimurec (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: 2017-09-27, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mining, Petroleum and Geology Engineering; Petroleum Mining

Abstract

U današnje vrijeme, dubine mora na kojima se vrše operacije bušenja dosegle su čak 3 400 m. Povećanjem dubine mora, povećali su se i kriteriji uspješne kontrole tlaka. Premda su osnove kontrole tlaka u podvodnom i kopnenom bušenju iste, postoje određeni problemi specifični isključivo za odobalne operacije. Kompliciraniji sustavi opreme, potencijalni načini otkrivanja dotoka, sastav protuerupcijskih uređaja, smanjeni gradijenti tlaka frakturiranja, plinski hidrati, problemi s padom tlaka u vodovima za gušenje i prigušivanje zbog trenja te zaostajanje plina ispod protuerupcijskog uređaja nakon iscirkuliravanja dotoka samo su neki od njih. Prema tome, na svaku i najmanju sumnju u dotok, treba pravovremeno i brzo reagirati, zatvoriti bušotinu i započeti s metodom ugušivanja jer u konačnici posljedice mogu biti kobne.

Abstract (english)

It is hard to believe that nowadays drilling operations are taking place in water depths of 3,400 meters. As the water depth increases, the criteria for successful well control become more demanding. Although the basics of subsea and onshore well controls are the same, there are some problems related particularly to the offshore operations. Complicated subsea systems, detection of kicks, composition of BOP stacks, reduced fracture gradients, gas hydrates, choke line friction pressure problems and trapped gas after circulating out a kick are just some of them. Accordingly, if there is any doubt of kick, quick and proper reactions may prevent undesirable consequences.

• Keywords: kontrola tlaka u podvodnom bušenju; detekcija dotoka; dotok; diverter; plitko zaliježući plin; plinski hidrati; protuerupcijski uređaj; zarobljeni plin; usponske cijevi; pad tlaka u vodu za prigušivanje zbog trenja; podmorska oprema
• Keywords (english): subsea well control; kick detection; kick; diverter; shallow gas; gas hydrates; BOP stack; trapped gas; marine riser; choke line friction pressure (CLFP); subsea components
• Language: croatian
• URN:NBN: urn:nbn:hr:169:926890
• 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: 2018-04-12 07:37:33