交联聚合物溶液成胶动态特征及其机理

发布时间：2018-01-08 06:06

本文关键词：交联聚合物溶液成胶动态特征及其机理　出处：《大庆石油地质与开发》2017年04期 　论文类型：期刊论文

【摘要】：渤海油藏长期注水开发已形成优势通道。根据油藏调剖的实际需求,采用物理模拟方法,开展了交联聚合物溶液成胶动态特征及其作用机理研究。结果表明:交联剂与聚合物间化学反应主要为两种,一是聚合物同一分子链上不同支链间("分子内")交联反应,形成"局部性"网状分子聚集体,宏观上黏度基本保持不变,二是聚合物不同分子链间("分子间")交联反应,形成"区域性"网状分子聚集体,宏观上黏度和黏弹性大幅度增加;在交联聚合物溶液中,发生"分子内"交联反应所需时间要远少于"分子间"交联反应,这一特征在酚醛树脂类交联聚合物溶液内表现尤为明显;在目标油藏条件下,有机铬类交联剂与聚合物间形成"区域性"网状聚集体时间低于0.5 h,酚醛树脂类则为72 h左右。
[Abstract]:Bohai long-term water reservoir development has formed the dominant channel. According to the actual needs of reservoir profile, using the method of physical simulation is carried out to study the crosslinked polymer solution and the mechanism of dynamic characteristics of rubber. The results showed that the chemical reaction between polymer and crosslinking agent is mainly two kinds, one is the same polymer molecular chain of different inter chain ("intramolecular crosslinking reaction"), the formation of "local" network of molecular aggregates, the macro viscosity remained unchanged, two different polymer chains between ("molecules") crosslinking reaction, formation of "regional" network of molecular aggregates, the macroscopic viscosity and viscoelasticity greatly increased; in the cross-linked polymer solution. "Intramolecular cross-linking reaction" time is far less than the "intermolecular crosslinking reaction", this feature in phenolic resin crosslinked polymer solution is obvious; in the objective conditions of the reservoir, organic chromium The "regional" reticular gathering time between the class of crosslinker and the polymer is less than 0.5 h, and the phenolic resin is about 72 h.

【作者单位】：海洋石油高效开发国家重点实验室;中海石油研究总院;东北石油大学提高油气采收率实验室;
【基金】：国家自然基金项目“抗盐型聚合物油藏适应性及其改进方法基础研究”(51574086) 中海石油有限公司科技课题“分级组合深部调剖技术扩大试验研究”(YXKY-2016-ZY-02)
【分类号】：TE52
【正文快照】： 3.东北石油大学提高油气采收率实验室,黑龙江大庆163316)渤海是中国海上油田主要分布海域,又以稠油油藏居多。稠油油藏具有储层厚度大、非均质性重、岩石胶结强度低、注入水矿化度高、单井注采强度高和注采井距大等特点,开采难度较大[1-5]。渤海SZ36-1、LD10-1、PL19-3等稠油

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