An experimental research on gas-injection huff and puff recovery after the cold heavy-oil production of foamy-oil reservoirs
SUN Xiaofei, ZHANG Yanyu, CUI Guoliang, LI Xingmin, DUAN Xuewei
ACTA PETROLEI SINICA . 2013, (6): 1143 -1149 .  DOI: 10.7623/syxb201306014