Abstract: This paper introduced the research progress and application of the EOR techniques such as chemical flooding,heavy oil thermal recovery,gas flooding and microbial flooding,summarized the application conditions,application results and existing problems for various techniques,and disscussed the direction of the large-scale application of EOR techniques for SINOPEC.The results show that chemical flooding has become the predominant EOR technology EOR projects of SINOPEC are under.Polymer and SP flooding techniques are mature and complete in supporting technologies,and have been put into industrial application technologies in China,with well developed relating techniques,and in the phase of industrialization.Heterogeneous Post-polymer flooding test of non-homogeneous composite flooding technique has been test successfully carried out in the 1^st Block of central Gudao,Shengli oilfield,and after polymer flooding which can be expected to enhanced oil recovery of 7.3% is expected.Among heavy oil thermal recovery techniques,thermochemical puff & huff,well pattern infilling and thermal recovery of conventional heavy oil techniques are in the process of generalization and application have had large scale field applications,while steam injection and thermochemical steam injection techniques are still under research.SINOPEC is currently carrying out pilots for gas flooding and microbial flooding which can be expected to with the expectation of enhanced oil recovery increase.The focuses of SINOPEC's industrial application of EOR techniques in the future are displacing agent or displacing system capable of being adapted to harsh reservoir conditions,mobility control technique and combined application of mature technologies.

Key words: chemical flooding, thermal recovery of heavy oil, gas flooding, microbial flooding, EOR, SINOPEC