Abstract: To resolve the problem oil reserves are developed unevenly and water invasion is getting worse in the middle-late period of steam circling productionin Gudao heavy oil field, reduce the water-cut and increase the heavy oil prodution recovery, by the technology of adjusting well pattern densely and injection section with foam to ameliorate the situation of oil reserves employ with asymmetry in the parallel and vertical plane. The water invasion rate is controlled effectively by combining"employing,drainage, cease, shutoff, shun"with other coordinated measure of geology and technology, oil production period is prolonged and the oil-gas rate increased by thermodynamic production preventing sand、chemical dredge and other technology, so that the necessary technology that is suitable for heavy oil production with steam circling in Gudao oil field come into being and the
preferable result is obtained. By the time the production degree that heavy oil production with steam circling in Gudao oil field has come to14.7% and the recovery has come to 32.5%. The technology has a great significance and value worthy of being extended to the similar reservoirs with steam circling production in the middle-late period.

Key words: steam circling, necessary technology, production effectiveness, Gudao oilfield