论文部分内容阅读
利用仪器检测和物理模拟等方法,开展了聚表剂溶液增黏性能、分子线团尺寸Dh、乳化性能、流动特性和驱油效果实验研究。结果表明,聚表剂增黏效果优于“中分”聚合物,当聚合物浓度由600 mg/L增至1600 mg/L时,聚表剂体系黏度增至101.9 m Pa.s,为最初时的8.9倍;“中分”聚合物体系黏度仅为最初时的3.7倍。聚合物浓度相同条件下,溶液中聚表剂分子线团尺寸Dh大于“中分”聚合物;聚表剂溶液的阻力系数和残余阻力系数(22.6和16.4)高于“中分”聚合物溶液(7.5和1.8)。当注入时机为含水率80%,段塞尺寸为0.57 PV,段塞组合方式为“高、中、低”时增油效果最好。
By means of instrumental testing and physical simulation, experiments were carried out on the properties of viscosity increasing, molecular coil size Dh, emulsifying property, fluidity and flooding effect. The results showed that the viscosity increasing effect of the poly-aggregates was better than that of the “mid-divided” polymers. When the concentration of the polymer increased from 600 mg / L to 1600 mg / L, the viscosity of the poly-aggregates increased to 101.9 mPa.s, 8.9 times the original; “Score ” polymer system viscosity was only 3.7 times the original. Under the same condition of polymer concentration, the molecular wire size Dh of the poly-aggregates in the solution is larger than the “mid-divided” polymer. The drag coefficient and residual drag coefficient of the poly-surfactant solution (22.6 and 16.4) Polymer solution (7.5 and 1.8). When the timing of injection is 80% moisture content, the slug size is 0.57 PV, and the slug combination mode is “high, medium and low”, the best oiling effect is achieved.