Change search
ReferencesLink to record
Permanent link

Direct link
Automatic Well Control Simulations
Norwegian University of Science and Technology, Faculty of Engineering Science and Technology, Department of Petroleum Engineering and Applied Geophysics.
2012 (English)MasteroppgaveStudent thesis
Abstract [en]

Every year kick incidents occur, maybe best remembered by the Macondo blowout in April 2010 resulting in devastating oil spills throughout the Gulf of Mexico. Well control is one of the most important factors in any drilling operation, preventing disastrous blowouts where people and the environment will be affected. The development of new technologies has increased significantly, lowering the risks of blowouts, mostly because of the reliability of blowout preventers. Better hardware systems have been developed and better materials has increased the performance during critical parts of an operation. There are several causes why we encounter kicks; not keeping the hole full, lost circulation, swabbing, underbalanced pressures, trapped fluids/pressures and mechanical failures. Before an actual kick, there are warning signs that might occur and knowing how to interpret positive indicators of kick is very important. Pit gain, increase in return flow rate and abnormalities in drillpipe pressure are all signs that formation fluid has entered the well. When experiencing a kick, procedures to reduce the danger and the non productive time have to be started. Firstly the well has to be shut in by either the hard shut-in method or the soft shut-in method. Then the influx has to be circulated out of the well by the use of either the Driller’s Method or the Wait and Weight Method. To better understand and visualize the behavior of formation fluid entering the well, the simulation program Drillbench Kick has been used. The soft shut-in has been compared against the hard shut-in and the Driller’s Method has been run against the Wait & Weight Method. The simulations have been performed with both oil based mud and water based mud.

Place, publisher, year, edition, pages
Institutt for petroleumsteknologi og anvendt geofysikk , 2012. , 79 p.
Keyword [no]
ntnudaim:7897, MTGEOP Geofag og petroleumsteknologi, Boreteknologi
URN: urn:nbn:no:ntnu:diva-18381Local ID: ntnudaim:7897OAI: diva2:566030
Available from: 2012-11-08 Created: 2012-11-08 Last updated: 2013-06-07Bibliographically approved

Open Access in DiVA

fulltext(2692 kB)2553 downloads
File information
File name FULLTEXT01.pdfFile size 2692 kBChecksum SHA-512
Type fulltextMimetype application/pdf
cover(184 kB)18 downloads
File information
File name COVER01.pdfFile size 184 kBChecksum SHA-512
Type coverMimetype application/pdf

By organisation
Department of Petroleum Engineering and Applied Geophysics

Search outside of DiVA

GoogleGoogle Scholar
Total: 2553 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 159 hits
ReferencesLink to record
Permanent link

Direct link