Sequence Stratigraphic Correlation of the Tor Field
A new sequence stratigraphic correlation of the Tor Field has been created in this MSc
The lithostratigraphic correlation currently used by the Tor Field operator ConocoPhillips
for reservoir characterization, has been criticized by Total E&P Norge because: (a) it is
mainly based on the porosity curve derived from wireline logs (b) it displays random
thickness variations, which can not be explained with faults visible on seismic.
The presented correlation of the Tor Field is based on the principle of sequence strati-
graphic correlation. Six Tor Field wells were previously correlated as a part of a regional
study by Gennaro et al. (2011) and became the principle reference for the new correlation.
Other previous correlations of the Tor Field were also reviewed and considered. The new
correlation used composite logs instead of just the derived porosity log. In addition, a
biostratigraphic study of two Tor Field wells by Lottaroli and Catrullo (2000) was included
to support the new correlation.
The new correlation proved to be more uniform in terms of interval thickness and the
remaining thickness changes could be better explained, compared to the lithostratigraphic
correlation. The interval thickness trends that are found in new correlation are more
consistent than earlier. A repeated section in well 2/5-2 was identied with the help
of the biostratigraphy from Lottaroli and Catrullo (2000) and the aected markers were
This new sequence stratigraphic correlation will be tested by Total E&P Norge in a
revision of their reservoir characterization model and dynamic simulation model.
Place, publisher, year, edition, pages
Institutt for geologi og bergteknikk , 2012. , 109 p.
ntnudaim:7387, MTGEOP Geofag og petroleumsteknologi, Petroleumsgeologi
IdentifiersURN: urn:nbn:no:ntnu:diva-20368Local ID: ntnudaim:7387OAI: oai:DiVA.org:ntnu-20368DiVA: diva2:608833
Mørk, Mai Britt E., ProfessorSeiffert, Lutz