| 摘要: |
| 模拟双河油田95℃高温油藏条件,评价研究了交联聚合物驱油体系的成胶性能、耐温抗盐性能和长期热稳定性,分析了影响驱油体系成胶性能的主要因素。结果 表明,研制的交联聚合物体系耐温抗盐性能好,耐温105 ℃,抗盐100 000 mg/L；在95 ℃高温下老化180天,成胶黏度保持稳定。优化了交联聚合物体系配方,形成了高度、中度和低度交联聚合物系列配方,为高温油藏化学驱提高采收率提供了新型驱油体系。 |
| 关键词: 聚合物 交联剂 聚交比 黏度 耐温抗盐 热稳定性 |
| DOI：10.3969/j.issn.1007-3426.2013.04.014 |
| 分类号:TE357.1+2 |
| 基金项目:中国石油化工集团公司“十条龙”重点科技攻关项目“耐温抗盐低浓度交联聚合物驱油技术研究”(P04056)。 |
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| Evaluation of gelling properties and formula optimization of temperature and salt resistance cross-linking polymer system |
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Tang Jinxing, Hai Yuzi, Sheng Haiyan, Luo Jiuming, Huang Haiquan
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(Research Institute of Petroleum Exploration and Development, Henan Oilfield Company, Sinopec, Nanyang 473132, Henan,China)
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| Abstract: |
| Simulated the reservoir conditions with high temperature of 95℃ in Shuanghe oil field, properties of gelling, temperature and salt tolerance, and long-term thermal stability of cross-linking polymer systems were evaluated,and main factors impacting on gelling properties were analyzed. The experimental results showed the cross-linking polymer systems have excellent temperature resistance of 105℃ and salt tolerance of 100 000 mg/L salinity, as well as long-term thermal stability after aging 180 days at 95℃. A line of formulations including highly cross-linked, moderate and low cross-linking systems were optimized for different oilfield applications, which provide new flooding systems for enhancing oil recovery of high temperature reservoirs. |
| Key words: polymer cross-linker ratio of polymer and cross-linker viscosity elevated temperature temperature and salt tolerance thermal stability |
