Progress of research work on chemical flooding technology in China

Progress of research work and development trend on chemical flooding technology in China,covering the transformation of conception with respect to polymer flooding technology,achievement of the research work and integrated technology in this field;pilot test and oilfield trial operation of ternary combination flooding technology;combined technology of polymer flooding and deep profile;technology for injection of polluted water together with the polymer;the upgrading of polymer flooding agent products;as well as the research work on the ternary blended flooding agent systems et al were summarized.Finally,the new chemical flooding technology,such as foam combination flooding,microbial flooding and nano-technology that should be further developed were pointed out.