Comparison of oil displacement mechanisms and performances between continuous and dispersed phase flooding agents

Zhe SUN,Xingcai WU,Xiaodong KANG,Xiangguo LU,Qiang LI,Weidong JIANG,Jing ZHANG

Table 2 Experimental scheme for fluid diversion ability evaluation.

Run No. Injection mode Phase 1 Phase 2 Phase 3 1-1 Constant speed Water flood the core until the water cut reaches 98% (0.83 PV & Cp=1 000 mg/L) polymer solution+(0.50 PV& Cp=2 000 mg/L) polymer solution Subsequently, water flood the core until the water cut reaches 98% 1-2 Constant speed 0.30 PV SMG(Y) +0.53 PV SMG(W) +0.30 PV SMG(Y) +0.20 PV SMG(W) 2-1 Constant pressure (0.83 PV & Cp=1 000 mg/L) polymer solution +(0.50 PV & Cp=2 000 mg/L) polymer solution 2-2 Constant pressure 0.30 PV SMG(Y)+0.53 PV SMG(W)+0.30 PV SMG(Y)+0.20 PV SMG(W)