高温油藏耐盐聚合物P（AM/MAPS）驱油剂的制备与性能评价

Study on Oil Displacement Agent of Salt Tolerance Polymer P（AM/MAPS）for High Temperature Reservoir

宁长元 张 亮 潘若生 康万利 李 哲 杨红斌 周博博 蒋海壮

NING Changyuan ZHANG Liang PAN Ruosheng KANG Wanli LI Zhe YANG Hongbin ZHOU Bobo JIANG Haizhuang

随着聚合物驱广泛应用，部分水解聚丙烯酰胺（HPAM）在高温高盐油藏中存在易水解、增黏能力较差的问 题。为满足目前日益苛刻的储层开采条件，首先利用烯丙基氯与N-甲基牛磺酸钠合成一种耐盐功能单体3-（N烯丙基-N-甲基氨基）丙烷-1-磺酸钠（MAPS），进一步与丙烯酰胺（AM）共聚合成了一种新型耐盐聚合物P（AM/ MAPS）；红外光谱法、核磁氢谱法表征证实为目标产物。采用流变仪系统研究了浓度、温度、矿化度及剪切速率 对新型耐盐聚合物溶液黏度的影响规律。结果表明，在温度为85 ℃、矿化度为3×104 mg/L的油藏条件下，质量 浓度为2000 mg/L的P（AM/MAPS）耐盐聚合物溶液的表观黏度达到14.20 mPa·s。在渗透率为527.73×10-3 μm2 的单管填砂管中，P（AM/MAPS）可在水驱基础上提高采收率13.42百分点；在高低渗透率分别为882.79×10-3 、 422.53×10-3 μm2 的双管并联填砂管中，总采收率可提高9.27百分点。该耐盐聚合物P（AM/MAPS）能够高效用于 高温高盐油藏聚合物驱提高采收率技术。

With the application of polymer flooding，partially hydrolyzed polyacrylamide（HPAM）has the problems of easy hydrolysis and low viscosity in high-temperature and high-salinity（HTHS）reservoir. To meet the requirement of harsh reservoir，a salt-resistant monomer 3-（N-allyl-N-methylamino）propane-1-sulfonate sodium（MAPS）was synthesized using allyl chloride and sodium N-methyl taurate as main materials，and MAPS and acrylamide（AM）were further copolymerized to form a novel salt-resistant polymer P（AM/MAPS）. The product was characterized by infrared spectroscopy and nuclear magnetic hydrogen spectroscopy. The effects of concentration，temperature，salinity and shear rate on the viscosity of P（AM/MAPS）were studied by rheometer. The results showed that the viscosity of P（AM/MAPS）solution with mass concentration of 2000 mg/L reached 14.20 mPa·s under the conditions of the temperature of 85 ℃ and salinity of 3×104 mg/L. In one-dimensional displacement experiment with permeability of 527.73×10-3 μm2 sand pack tube，P（AM/MAPS）could enhanced oil recovery by 13.42% on the basis of water flooding，and the total recovery rate of the double-pipe parallel core with permeability of 882.79×10-3 ，422.53×10-3 μm2 could enhanced by 9.27%. The salt-resistant polymer P（AM/MAPS）could be efficiently used in polymer flooding technology for HTHS reservoir to enhanced oil recovery.

10.19346/j.cnki.1000-4092.2023.03.013