| 摘要: |
| 冻胶是溶液中的聚合物分子被交联剂交联后得到的一个整体失去流动性的体系。由聚合物部分水解聚丙烯酰胺与交联剂有机铬交联产生的冻胶,通过乙醇溶剂置换,消除相渗透率的影响，测定冻胶膜在油(甲苯)和水分别 通过时对油和水的残余阻力系数。试验结果表明，冻胶对水的流动阻力是对油(甲苯)流动阻力的14. 79倍,即冻胶 对水和油有明显的选择性。该冻胶的选择性堵水性能可由膨胀收缩机理和油水分流机理来解释。 |
| 关键词: 冻胶 选择性堵水 堵水机理 试验 |
| DOI： |
| 分类号: |
| 基金项目:中国石油化工集团公司重点科研攻关项目(P04056) |
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| Test on selective plugging of gel based on solvent substitution method |
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DAI Cai-lil1,ZHAO Fu-lin1,HAI Re-ti2,HE Long1,WANG Jian-guo1
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(1.College of Petroleum Engineering in China University of Petroleum, Dongying 257061，Shandong Province, China;2. Zhundong Oil Production Plant of Xinjiang Oilfield，Fukang 831511, Xinjiang, China)
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| Abstract: |
| Gel is wholly mobility-lost system which changed from polymer solution cross-linked by cross-linking agent. The gel system was prepared by partially hydrolyzed polyacrylamide and complexed Cr3+ as the cross-linking agent. By solvent substitution，the effect of effective phase permeability was removed, and the residual resistance factors ( RRF) to water and oil were measured when oil (toluene) and water passed through gelled film. The results show that the flow resistance of gel to water is 14.79 times as large as that to oil (toluene) , that is, gel has obvious selectivity to water and oil (toluene). The selective plugging mechanism can be explained by swelling-contracting mechanism and oil-water firactural mechanism. |
| Key words: gel selective plugging plugging mechanism test |
