【摘要】 基于某油田高矿化度高钙镁的油藏条件，以缔合聚合物（DPAM）为基础，建立了该油藏聚合物驱溶液的2种增黏方法——表面活性剂增黏和化学交联剂增黏，分别评价了影响聚合物溶液黏度的主要因素。结果表明，在62℃、Ca²⁺质量浓度540 mg/L、矿化度30 000 mg/L下，两种体系的最佳配方分别是2 000 mg/L DPAM+100 mg/L SDS和2 000 mg/L DPAM+0.5%Zr,相较于DPAM,前者黏度提高25～31倍，后者提高30～45倍；DPAM/Zr体系较DPAM/SDS具有更稳固的空间网状结构，适宜的聚合物与化学增黏剂的质量配比是调控聚合物驱替液黏度的关键。更多还原

【Abstract】 Two viscosification methods for polymer flooding solutions based on associated polymer（DPAM） were established for high salinity and high calcium and magnesium reservoir conditions in a certain oilfield, namely surfactant viscosification and chemical crosslinking agent viscosification. The main factors affecting the viscosity of polymer solution were evaluated separately. The results show that at 62 ℃, Ca²⁺ concentration of 540 mg/L and mineralization degree of 30 000 mg/L, the optimal material formulations are 2 000 mg/L DPAM+100 mg/L SDS and 2 000 mg/L DPAM+0.5% Zr, respectively. Compared to DPAM, the viscosity of the former increases by 25-31 times, while the latter increases by 30-45 times. The DPAM/Zr system has a more stable spatial network structure than DPAM/SDS, and the appropriate mass ratio of polymer and chemical viscosity enhancer is the key to regulating the viscosity of polymer displacement fluid.更多还原