Upravljanje pijescima - geomehanički pristup

master's thesis

• Title: Upravljanje pijescima - geomehanički pristup : diplomski rad
• Title (english): Sand management – geomehanical approach : master's thesis
• Author: Ivan Španić
• Mentor: Davorin Matanović (mentor)
• Committee member: Davorin Matanović
• Committee member: Nediljka Gaurina-Međimurec
• Committee member: Marin Čikeš
• Granter: University of Zagreb; Faculty of Mining, Geology and Petroleum Engineering; (Department of Petroleum and Gas Engineering and energy); Zagreb
• Defense date and country: 2011-09-30, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mining, Petroleum and Geology Engineering; Petroleum Mining

Abstract

Uzrok proizvodnje pijeska je prisutnost dezintegriranih pješčanih čestica nastalih uslijed stijenskih pukotina u kanalu bušotine i/ili u stjenkama perforacija. Odluka za prikladan pristup kontrole pijeska zahtijeva inženjersku analizu procjene vremena i ozbiljnosti dotjecanja tijekom životnog vijeka bušotine u postojećim uvjetima. Optimiranje parametara bušotine poput putanje, mjesta perforiranja i stupnja sniženja tlaka primjenom geomehaničkog pristupa može smanjiti i odgoditi proizvodnju pijeska.
Ovaj diplomski rad predstavlja pristup geomehaničkog modeliranja koji uključuje povijest proizvodnje sa podacima o bušenju, mjerenja u bušotini i mjerenja mehaničkih svojstava stijena, te njegov cjelokupni prikaz. Karotažni dijagrami profila stijenske čvrstoće izvedenih su ispitivanjem jezgri iz više ležišta. Kriteriji nastajanja pukotine u pješčenjacima razvijeni su kao funkcije in-situ naprezanja, čvrstoće stijena, putanje kanala bušotine, orijentacije perforacija, ležišne depresije i pada tlaka u bušotini. Izvedeni su rezultati procjene dotoka pijeska te su uspoređeni sa podacima proizvodnje.

Abstract (english)

Abstract: The source of sand production is the presence of disintegrated sand grains due to rock failure at the wellbore and/or perforation walls. Decision for appropriate sand control strategy requires engineering analysis to evaluate timing and severity of sanding over the life of field conditions. Optimizing well parameters such as trajectory, perforation orientation, and level of drawdown using geomehanical principles can minimize and delay sand production.
This master's thesis presents a geomehanical modeling approach that integrates production history with information from drilling data, well logs and mechanics tests, and his complete demonstration. A rock strength log profiles are estimated throughout the reservoir depth several wells. A rock failure criterion at the sand face is developed as a function of in-situ stresses, rock strength, well trajectory, perforation orientation, reservoir depletion and drawdown. Sanding evaluation results are calibrated and verified with production data.

• Keywords: upravljanje pijescima; geomehanički pristup; in-situ naprezanja; proizvodnja pijeska; erozija
• Keywords (english): sand management; geomehanical approach; in-situ stress; sand production; erosion
• Language: croatian
• URN:NBN: urn:nbn:hr:169:203410
• 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: Access restricted to students and staff of home institution
• Created on: 2016-03-30 08:00:22