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中文摘要：
采用低渗透（0.035～0.040μm^2）胶结石英砂岩心,在45℃考察了商品阴离子表面活性剂HLX-BO1和ClO2降低聚驱压力、解除聚合物堵塞的能力。在水饱和岩心中注入0.5PV3%HLX-BO1溶液可使1.0g/L聚合物（M=8.4×10^6）溶液的平稳注入压力、后续水驱压力、阻力系数和残余阻力系数分别由260kPa、92.5kPa、10.4、3.7降至155kPa、30.7kPa、6.4、1.4;水饱和和油饱和岩心在聚驱后或水驱＋聚驱后依次注入1.5PV5%ClO2溶液和0.5PV3%HLX-BO1溶液,后续注聚时的平稳压力分别下降约1/2和2/3。认为在大庆低渗透油藏可采用先注表面活性剂后注聚合物的驱油方法,聚合物产生的堵塞可用ClO2解除。
英文摘要：
The ability of a commercial anionic surfactant, HLX-BOI, and oxidant ClO2 to enhance polymer injectivity and remove polymer caused pluggins was investigated at 45℃ on resin cemented quartz artificial cores of low permeability,0. 035--0. 040 μm^2. For water saturated cores,0. 5 PV of 3% HLX-BO1 solution injected before polymer injection resulted in decreasing the steady injecting pressure of 1.0 g/L polymer（M =8.4 × 10^6 ） solution,the resistance factor and the residual resistance factor created by the polymer injected, and the successive water injecting pressure from 260 kPa, 10. 4 and 3. 7, and 92.5 kPa to 155 kPa,6. 4 and 1.4, and 30. 7 kPa, respectively;for a water saturated core having been flooded by polymer and an oil saturated core having been flooded by water and polymer,injection of 1.5 PV of 5% ClO2 solution followed by 0. 5 PV of 3% HLX-BO1 solution reduced the steady injecting pressure of successive polymer solution to about 1/2 and 1/3 of its first injection. This surfactant injection prior to polymer flood as an effective method of EOR and chlorine dioxide as polymer induced reservoir blockage removing agent were recommend for Daqing oil reservoirs of low permeability.
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