石油钻采工艺Issue(4)：109-111,125,4.DOI:10.13639/j.odpt.2014.04.027
调剖用凝胶的吸水溶胀特性评价及改进
Evaluation and improvement of swelling characteristics of gel used for profile control
吴刚 1田利民 1王克涛 1朱国良 1李胜华 1陈善峰1
作者信息
- 1. 中国石油华北油田分公司，河北任丘 062552
- 折叠
摘要
Abstract
In view of the technical limitations of ordinary polyacrylamide hydrogel revealed gradually in the chemical profile control, a research was conducted on water soaking and viscosity loss of chrome crosslinking system and phenolic resin crosslinking system within a temperature range of 50 ℃ to 90 ℃; and following the basic theory of Darcy’s Law, a new soluble polymer material was introduced to improve the strength of ordinary gel crosslinking strength starting from increasing the crosslinking density and reduc-ing gel swelling degree. The results show that, when gel is adequately soaked in water, its viscosity will decrease with the extension of reaction time, and that the gel has swelling function and its viscosity loses. Addition of PVA can easily create in-grid hydrogen bond or winding with polyacrylamide molecules, which plays the role of physical crosslinking point and improves the gel viscosity by 30%. After observation for 180 days, its viscosity loss is less than10%. The research results can provide technical support for solving interlayer contradictions and initiating the production potential of low-permeability sections.关键词
调剖/凝胶/黏度/浸泡/溶胀Key words
profile control/gel/viscosity/soak/swell分类
能源科技引用本文复制引用
吴刚,田利民,王克涛,朱国良,李胜华,陈善峰..调剖用凝胶的吸水溶胀特性评价及改进[J].石油钻采工艺,2014,(4):109-111,125,4.
