(Updates with announcement)
Oct 12 (Reuters) - Cleaning services company Ecolab Inc
said it will buy privately held Champion Technologies Inc, a maker of oilfield specialty chemicals, for about $2.2 billion in a cash and stock deal.
Ecolab said Champion's technology and products were complementary to its services in the offshore and international energy markets.
Champion competes with companies such as Schlumberger NV , Halliburton Co and Baker Hughes Inc .
(Reporting by Sakthi Prasad; Editing by Daniel Magnowski and Ted Kerr)
Keywords: CHAMPION DEAL/