Mapping Reservoir Changes Using 4D Seismic on the Norne G-segment, Norwegian Sea
Time-lapse seismic can be an important tool for monitoring and planing further development of a producing hydrocarbon field. Use of 4D seismic can make itpossible to detect production changes over a relatively large area and match thesechanges with production data acquired from wells. Undepleted poc...
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/240156 2023-05-15T17:47:07+02:00 Mapping Reservoir Changes Using 4D Seismic on the Norne G-segment, Norwegian Sea Aschjem, Gunnar Landrø, Martin Norges teknisk-naturvitenskapelige universitet, Fakultet for ingeniørvitenskap og teknologi, Institutt for petroleumsteknologi og anvendt geofysikk 2013 http://hdl.handle.net/11250/240156 eng eng Institutt for petroleumsteknologi og anvendt geofysikk 649702 ntnudaim:9729 http://hdl.handle.net/11250/240156 87 Master thesis 2013 ftntnutrondheimi 2019-09-17T06:48:53Z Time-lapse seismic can be an important tool for monitoring and planing further development of a producing hydrocarbon field. Use of 4D seismic can make itpossible to detect production changes over a relatively large area and match thesechanges with production data acquired from wells. Undepleted pockets, pressurebarriers and injectors out of range can be revealed when interpreting a 4D data set.This can be valuable information when updating reservoir models and when planingnew wells an hence, lead to an increased recovery from the field.The reservoir interval and the oil column in the Norne G-segment are relatively thin.The pore pressure in the segment has been in the range of the bubble point of thehydrocarbons in place. This has led to gas going out of solution and back to oil againas a result of variations in pore pressure. The producer 6608/10-E-4 has extractedthe hydrocarbons from the segment while injector 6608/10-F-4 has given pressuresupport to the producer by injection of water down flank in the water zone. Waterhas flushed oil as a result of the production of the hydrocarbons and injection ofwater. All this factors introduces more than one effect that may have affected theseismic response form the field at the same time, making the 4D interpretation inthis segment challenging.In this Master?s thesis interpretation of pressure and saturation changes in the NorneG-segment have been performed for the time interval between 2001 and 2006. Thework is done by use of amplitude difference data and AVO attributes on the seismichorizon representing top reservoir in addition to time shift analysis on a horizon belowthe reservoir. Seismic data from 2001, 2003, 2004 and 2006 and well informationincluding paths, production and injection history has been available for this thesis. Master Thesis Norwegian Sea NTNU Open Archive (Norwegian University of Science and Technology) Norwegian Sea |
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Open Polar |
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NTNU Open Archive (Norwegian University of Science and Technology) |
op_collection_id |
ftntnutrondheimi |
language |
English |
description |
Time-lapse seismic can be an important tool for monitoring and planing further development of a producing hydrocarbon field. Use of 4D seismic can make itpossible to detect production changes over a relatively large area and match thesechanges with production data acquired from wells. Undepleted pockets, pressurebarriers and injectors out of range can be revealed when interpreting a 4D data set.This can be valuable information when updating reservoir models and when planingnew wells an hence, lead to an increased recovery from the field.The reservoir interval and the oil column in the Norne G-segment are relatively thin.The pore pressure in the segment has been in the range of the bubble point of thehydrocarbons in place. This has led to gas going out of solution and back to oil againas a result of variations in pore pressure. The producer 6608/10-E-4 has extractedthe hydrocarbons from the segment while injector 6608/10-F-4 has given pressuresupport to the producer by injection of water down flank in the water zone. Waterhas flushed oil as a result of the production of the hydrocarbons and injection ofwater. All this factors introduces more than one effect that may have affected theseismic response form the field at the same time, making the 4D interpretation inthis segment challenging.In this Master?s thesis interpretation of pressure and saturation changes in the NorneG-segment have been performed for the time interval between 2001 and 2006. Thework is done by use of amplitude difference data and AVO attributes on the seismichorizon representing top reservoir in addition to time shift analysis on a horizon belowthe reservoir. Seismic data from 2001, 2003, 2004 and 2006 and well informationincluding paths, production and injection history has been available for this thesis. |
author2 |
Landrø, Martin Norges teknisk-naturvitenskapelige universitet, Fakultet for ingeniørvitenskap og teknologi, Institutt for petroleumsteknologi og anvendt geofysikk |
format |
Master Thesis |
author |
Aschjem, Gunnar |
spellingShingle |
Aschjem, Gunnar Mapping Reservoir Changes Using 4D Seismic on the Norne G-segment, Norwegian Sea |
author_facet |
Aschjem, Gunnar |
author_sort |
Aschjem, Gunnar |
title |
Mapping Reservoir Changes Using 4D Seismic on the Norne G-segment, Norwegian Sea |
title_short |
Mapping Reservoir Changes Using 4D Seismic on the Norne G-segment, Norwegian Sea |
title_full |
Mapping Reservoir Changes Using 4D Seismic on the Norne G-segment, Norwegian Sea |
title_fullStr |
Mapping Reservoir Changes Using 4D Seismic on the Norne G-segment, Norwegian Sea |
title_full_unstemmed |
Mapping Reservoir Changes Using 4D Seismic on the Norne G-segment, Norwegian Sea |
title_sort |
mapping reservoir changes using 4d seismic on the norne g-segment, norwegian sea |
publisher |
Institutt for petroleumsteknologi og anvendt geofysikk |
publishDate |
2013 |
url |
http://hdl.handle.net/11250/240156 |
geographic |
Norwegian Sea |
geographic_facet |
Norwegian Sea |
genre |
Norwegian Sea |
genre_facet |
Norwegian Sea |
op_source |
87 |
op_relation |
649702 ntnudaim:9729 http://hdl.handle.net/11250/240156 |
_version_ |
1766151437231849472 |