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在对国产黄孢胶和聚丙烯酰胺进行综合评价的基础上,选择低水解度水溶胶聚丙烯酰胺配制聚合物驱油剂,在马岭低渗透和高矿化度油藏进行聚合物驱替试验研究。试验结果表明,将10%水解度的聚丙烯酰胺与化学稳定剂联合应用,可使聚丙烯酰胺的抗盐性能和热稳定性能符合马岭油藏驱油需要。通过对马岭油藏聚合物驱油物理模拟和数值模拟研究,确定了最佳聚合物注入参数,并在马岭中区实施了单井试注。
Based on the comprehensive evaluation of the domestic jasminoides and polyacrylamide, the low water-solubility polyacrylamide was selected to prepare the polymer flooding agent and the polymer flooding was carried out in the Maling low permeability and high salinity reservoir Experimental Research. The test results show that the combination of 10% hydrolyzed polyacrylamide and chemical stabilizer can make the salt-resistant property and thermal stability of polyacrylamide meet the need of oil displacement in Maling reservoir. Through the physical simulation and numerical simulation of polymer flooding in the Maling reservoir, the optimal polymer injection parameters were determined and a single well test injection was carried out in Maling middle zone.