1.中海石油（中国）有限公司 天津分公司研究院;2.东北石油大学 提高油气采收率教育部重点实验室
Laboratory of Enhanced Oil Recovery of Education Ministry，Northeast Petroleum University
In BZ 34-2/4 Oilfield, the heterogeneity has been aggravated and the injection water circulation is inefficient after long-term water flooding. Therefore, profile control measures should be taken to improve the water flooding development effect. Based on the characteristics of BZ 34-2/4 reservoir, the gelation time and gelation viscosity of phenolic gel were tested by Brinell viscometer, the experiments of plugging and liquid flow diversion of phenolic gel were carried out by using epoxy resin casting core and heterogeneous core experiment. The results showed that curing agents and auxiliaries could increase the reaction speed and gel strength of phenolic gel profile control agents. The gel strength could be improved by adding curing agents to polymer SD-201 phenolic gel profile control agent and adding curing agents and auxiliaries to emulsion polymer DW-R phenolic gel profile control agent. Compared with the polymer DW-R phenolic gel, the polymer SD-201 phenolic gel has better plugging effect and liquid flow diversion effect in porous media. When the permeability of homogeneous core is Kg=300×10-3μm2 to 5400×10-3μm2, the plugging rate is 99.65% to 96.94%. When the permeability of heterogeneous core is 300/ 900/2000 ×10-3μm2, the recovery increases by 19.10%.