| Title | Bušenje uz dvojni gradijent tlaka i bušenje bez rajzer cijevi : diplomski rad |
| Author | Domagoj Hećimović |
| Mentor(s) | Zdenko Krištafor (thesis advisor)
|
| Abstract | Predmet istraživanja ovog diplomskog rada su nekonvencionalne metode bušenja, od kojih su posebno obrađene metode bušenja uz dvojni gradijent tlaka (DGD), odnosno metode bušenja bez rajzer cijevi, metoda transporta krhotina (CTS), bušenje s povratkom isplake bez rajzer cijevi (RMR), metoda povrata isplake kroz E-cijev (EdR), bušenje uz istovremeno ugušivanje bušotine (DKD) i metoda bušenja uz primjenu koncentričnog niza bušaćih šipki (RDM). Princip rada metode bušenja uz primjenu dvojnog gradijenta tlaka opisan je na temelju simulacije. Proporcionalno s povećanjem dubina istraživanja za naftom i plinom povećava se i kompleksnost operacija te problemi koji se mogu javiti prilikom njih. Pregledom literature je ustanovljeno kako su najveći problemi mala razlika između slojnog tlaka i tlaka frakturiranja („bušaći prozor“). Upravo korištenje obrađenih metoda, omogućava kvalitetnije bušenje u takvim zahtjevnim uvjetima. Razmišljanje naftnih kompanija polako se mijenja, u skladu s čime se počinju sve više koristiti nekonvencionalne metode koje postepeno zamjenjuju konvencionalne. |
| Keywords | drilling dual gradient drilling riserless drilling unconventional methods |
| Parallel title (English) | Dual gradient drilling methods and riserless drilling : master’s thesis |
| Committee Members | Zdenko Krištafor (committee chairperson)
Nediljka Gaurina-Međimurec (committee member)
Vladislav Brkić (committee member)
|
| Granter | University of Zagreb
Faculty of Mining, Geology and Petroleum Engineering |
| Lower level organizational units | Department of Petroleum Engineering |
| Place | Zagreb |
| State | Croatia |
| Scientific field, discipline, subdiscipline | TECHNICAL SCIENCES
Mining, Petroleum and Geology Engineering
Petroleum Mining
|
| Study programme type | university |
| Study level | graduate |
| Study programme | Petroleum engineering; specializations in: Petroleum engineering, Energy production and supply, Environmental protection in petroleum engineering |
| Study specialization | Petroleum engineering |
| Academic title abbreviation | mag. ing. petrol. |
| Genre | master's thesis |
| Language | Croatian |
| Defense date | 2016-12-16 |
| Parallel abstract (English) | Abstract: The subjects of this thesis are unconventional drilling methods, mainly dual gradient drilling methods, particularly riserless drilling methods, cuttings transport system (CTS), riserless mud return (RMR), E-duct return (EdR), dynamic kill drilling (DKD) and reelwell drilling method (RDM). The dual gradient drilling method is described through a simulation in order to explain the main functions. With the increase of the depth of offshore exploration, the complexity of operations and the number of problems that follow also proportionally increases. By reviewing the available literature, it was concluded that the main problem occurring in these conditions are the narrowing of the pore pressure and fracture pressure margins, otherwise known as the drilling window. Thus, by using the methods covered in this thesis, it becomes possible to drill more efficiently in such demanding conditions. The consensus of the drilling industry is slowly shifting and methods once known as conventional are slowly being replaced by unconventional ones. |
| Parallel keywords (Croatian) | bušenje bušenje uz dvojni gradijent tlaka bušenje bez rajzer cijevi nekonvencionalne metode |
| Resource type | text |
| Access condition | Open access |
| Terms of use |  |
| URN:NBN | https://urn.nsk.hr/urn:nbn:hr:169:716342 |
