fax 01-972-952-9435. AbstractThe re-circulating foam drilling and completion fluids (RFDCF) is a low density system developed by Shengli Drilling Mud Company of China. Its outstanding advantages are that no special equipment needed in field operation, the density can be adjusted between 0.60-0.99g/cm 3 and can be re-circulated. The laboratory evaluation proves that the density of RFDCF decrease with the increase of temperature and is always lower than 1.

fax 01-972-952-9435. AbstractThe re-circulating foam drilling and completion fluids (RFDCF) is a low density system developed by Shengli Drilling Mud Company of China. Its outstanding advantages are that no special equipment needed in field operation, the density can be adjusted between 0.60-0.99g/cm 3 and can be re-circulated. The laboratory evaluation proves that the density of RFDCF decrease with the increase of temperature and is always lower than 1.