Qian Siping, Du Peimin, Qiao Baolin, et al. THE REASON OF RESERVOIR BLOCKAGE IN CO2SWALLOWING-SPITTING TEST[J]. 2001, 22(3): 238-239. DOI: 10.11743/ogg20010310.DOI:
a new problem of reservoir blockage near wellbore area has arisen.The test result of Wen 65-84 Well in Zhongyuan Oilfields suggests that unknown mud like matter and inorgamic matter CaCO
3
could not cause the reservoir blockage
the dialysis of heavy organic materials (paraffin
bitumen)caused by CO
2
injection and the drop dwon of temperature is the real reason of the reservoir blockage.