[1]钱志鸿,汤元春,袁玉峰,等.聚合物凝胶溶液在岩心内动态运移及成胶形态的实验研究[J].复杂油气藏,2020,13(01):75-79.[doi:10.16181/j.cnki.fzyqc.2020.01.015]
 QIAN Zhihong,TANG Yuanchun,YUAN Yufeng,et al.Visualization of gel migration and gel formation in core[J].Complex Hydrocarbon Reservoirs,2020,13(01):75-79.[doi:10.16181/j.cnki.fzyqc.2020.01.015]
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聚合物凝胶溶液在岩心内动态运移及成胶形态的实验研究()
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
13卷
期数:
2020年01期
页码:
75-79
栏目:
油气工程
出版日期:
2020-03-25

文章信息/Info

Title:
Visualization of gel migration and gel formation in core
作者:
钱志鸿1汤元春1袁玉峰1顾春元2朱伟民1邓秀模1
1.中国石化江苏油田分公司石油工程技术研究院,江苏 扬州 225009;2.上海大学,上海 200040
Author(s):
QIAN Zhihong1TANG Yuanchun1YUAN Yufeng1GU Chunyuan 2ZHU Weimin 1DENG Xiumo1
1. Petroleum Engineering Technology Research Institute of Jiangsu Oilfield Company,SINOPEC,Yangzhou 225009, China;2. Shanghai University, Shanghai 200040,China
关键词:
凝胶核磁共振动态运移成胶形态选择性
Keywords:
gelnuclear magnetic resonancedynamic migrationgel formationselectivity
分类号:
TE357
DOI:
10.16181/j.cnki.fzyqc.2020.01.015
文献标志码:
A
摘要:
为探索更多聚合物凝胶在岩心中运移和封堵的信息,设计不同工艺参数的物模实验,并采用核磁成像技术对实验过程进行扫描跟踪,获得了凝胶溶液进入岩心、在岩心中运移、成胶后注水等阶段模拟图像。结果表明:聚合物凝胶溶液进入高低渗岩心时不存在明显的先后顺序,其选择性主要表现为高低渗岩心进入剂量的差别;在岩心中运移推进时,凝胶溶液前端会出现一定程度的“指进现象”,指进发生位置受岩心非均质性和重力双重影响,合理的注入速度和凝胶溶液黏度可以有效减轻指进程度;凝胶溶液注入剂量越大,聚集性越好,抗稀释能力越强;凝胶在高渗部位成胶促使注入水转向低渗,其放置的深度和成胶后的强度决定了低渗岩心启动的程度。
Abstract:
In order to obtain the information of gel migration and plugging in the core,it was designed the physical model experiments with different injected parameters, and the nuclear magnetic resonance (NMR) imaging technology was used to scan and track experimental processes.And then it was obtained visualization images for gel entering core,migration in core,and water injection after gelling.Experimental results show that there is no obvious sequence in the gel entering core,of which the selectivity is mainly shown by the difference between the doses into high and low permeability layers.When the gel is transported in the core pores,a certain degree of “fingering phenomenon”can occur at the front end of the gel,and the occurrence position of fingering is dually affected by the heterogeneity of core and the gravity.Reasonable injection rate and gel viscosity can effectively reduce the fingering degree.The higher the dose of gel implantation is,the better the aggregation is,and the stronger the anti-dilution ability is.The plugging of the hypertonic part causes the injected water to turn to low permeability. The depth and intensity of the gel placement determine the degree of low permeability starting.

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备注/Memo

备注/Memo:
收稿日期:2019-04-01;改回日期:2019-07-31。
第一作者简介:钱志鸿(1984—),工程师,主要从事调剖堵水工作。E-mail:qianzh.jsyt@sinopec.com。
更新日期/Last Update: 2020-03-15