调剖剂/调驱剂组合方式与油藏适应性研究 ——以渤海油田储层地质和流体条件为例*

Profile Control Agent/Displacement Control Agent Combination Method and Reservoir Adaptability Research —Taking Reservoir Geology and Fluid Conditions of Bohai Oilfield as an Example

刘 欢 王承州 卢祥国 刘义刚 王 楠 张 楠 何 欣

LIU Huan WANG Chengzhou LU Xiangguo LIU Yigang WANG Nan ZHANG Nan HE Xin

为明确调剖剂与调驱剂组合方式注入目标储层的可行性，通过室内实验计算调剖剂与调驱剂在岩心中的 阻力系数、残余阻力系数以及封堵率，分析其压力特征和分流率特征，确定调剖剂与调驱剂组合方式与目标储层 适应性的优劣。结果表明：在70 ℃、0.9 mL/min的注入速率下，初低黏延缓交联型调剖剂可进入岩心最适宜渗透 率的范围应在1000×10-3～3000×10-3 μm2 之间，且封堵率大于95%，封堵性能和液流转向效果均较好；“纳米型” 和“超分子型A”聚合物微球非连续性调驱剂可进入岩心最适宜渗透率的范围均应在500×10-3～1000×10-3 μm2 之间，且“超分子型A”调驱剂在岩心中的水化膨胀性能、深部调驱能力要优于“纳米型”调驱剂。调剖剂/调驱剂 组合方式提高低渗层的动用程度随着储层非均质性的增强而降低，级差大于8后，调剖剂/调驱剂组合方式的液 流转向效果有所减弱。

In order to clarify the feasibility of injection of profile control agent and profile control agent into target reservoir，the resistance coefficient，residual resistance coefficient and plugging rate of profile control agent and profile control agent in rock core was calculated through laboratory experiment，and the characteristics of pressure and diversion rate was analyzed，and the advantages and disadvantages of combination mode of profile control and displacement and target reservoir were determined. The results showed that at the temperature of 70 ℃ and at the injection rate of 0.9 mL/min，the adaptable permeability range of the initial low viscosity delayed crosslinking profile control agent should be between 1000 × 10-3 μm2 and 3000 × 10-3 μm2，and the plugging rate was more than 95%，indicating that the plugging performance and fluid diversion effect was good. The adaptable permeability range of "Nano type" and "Supermolecule type A" polymer microsphere discontinuous profile control and flooding agent should be between 500×10-3 μm2 and 1000×10-3μm2 . In addition，compared to "Nano type" profile control and displacement agent，the "Supermolecule type A" profile control and displacement agent had better hydration expansion performance and deep profile control and displacement ability. With the increase of reservoir heterogeneity，the production degree of low-permeability reservoir decreased. When the permeability difference was greater than 8，the fluid diversion effect of profile control/profile control flooding combination mode was weakened.

10.19346/j.cnki.1000-4092.2021.04.013