| 摘要: |
| 利用微材料合成方法,设计合成了孔喉尺度聚合物凝胶微球，并进行了微球在多孔介质中流动的室内实验和 现场初步试验。显微图像表明，合成微球具有很高的圆球度和庞大的数量特征,可方便地在线注入油层。实验研究 表明,微球具有良好的耐温性、耐矿化度特性和弹性变形能力,能在水中膨胀1 ~5倍;合成微球能在岩石孔隙中运 移，使注人压力和阻力系数不断增加，后续注水后仍有很高的残余阻力系数;微球与聚合物溶液复合体系的阻力系 数是纯聚合物驱时的8倍和水驱时的25倍左右,有加效效应和更高的提高波及体积能力。现场试验表明,孔喉尺度 聚合物凝胶微球对油层具有良好的适应性，可显著降低高含水油井的含水率，增加原油产量。 |
| 关键词: 聚合物 孔喉尺度 弹性微球 阻力系数 波及体积 调剖 驱油 |
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| Composing of pore-scale polymer microsphere and its application in improving oil recovery by profile control |
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LEI Guang-lun1,ZHENG Jia-peng2
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(1. College of Petroleum Engineering in China University of Petroleum, Dongying 257061 f Shandong Province, Chirm ;2. Oil Production Research Institute of Jidong Oilfield9 Tangshan 063004, Hebei Province，China)
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| Abstract: |
| Reservoir pore-scale polymer gel microspheres were designed and composed by micromaterial composing method. And the lab experiment and field test of polymer microspheres flowing in porous medium were conducted. Micrographs show that composed microspheres have spheric and large number properly, which can be injected in formation easily. Experiments indicate that composed pore-scale gel microspheres could resist high temperature and high salinity, whose volume could expand from 1 to 5 times in water and with good elastic deformation ability. The microspheres with high remnants resistance can move in rock pores which make the injection pressure and resistance factor constantly increase, and possess high residual resistance factor after the succeeding injecting water. The resistance factor of microspheres and polymer solution composite system is 8 times of polymer driving1 s and 25 times of water flowing's. The results of field tests show that pore-scale gel microspheres have good adaptability to oil reservoir nonuniformity，and can increase oil production and decrease water cut obviously in corresponding production wells. |
| Key words: polymer pore scale elasticity microsphere resistance factor spread volume profile control oil displacement |
