BUZZ-Earnings miss at Shell hits supply chain

** Oil support service stocks dominate top losers on Stoxx600 after weak Q4 results from Shell

** Co to cut spending by $15bln over next 3 yrs, hittingsupply chain

** Providers to Shell include Technip and Subsea, along with US peers Transocean, Noble and Schlumberger

** Credit Suisse cuts estimates across sector by an averageof 19 pct, also weighing on sentiment

** Upgrades Technip to "outperform", cuts Aker Solutions to "underperform", both from "neutral"

** Says too early to buy sector given combination ofnegative earnings momentum, earnings downgrade risk andworsening trading environment

** Stoxx 600 Oil and Gas index down 2.6 pct, weakestsector in Europe by some distance

(RM: alasdair.pal.thomsonreuters.com@reuters.net)