tsn has a trade tracker:
http://www.tsn.ca/tradecentre/feature/?id=11986
it shows 15 trades since Oct 1st.
Oilers involved in 5 of them:
-Mike Brown for a 4th
-Smid/Roy for Brossoit/Horak
-Omark for a 6th
-Dubnyk for Hendricks
-3rd for Scrivens
Calgary involved in 4 (5 if you include Colborne on Sept 29th)