Page 207 - 《精细化工》2020年第4期

第 37 卷第 4 期 精 细 化 工 Vol.37, No.4
202 0 年 4 月 FINE CHEMICALS Apr. 2020

油田化学品与油品添加剂
生物多糖在高温高盐油藏聚合物驱的可行性探索

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赖南君 1,2 ，闻一平 ，乔东宇 ，贾 超 ，何 卫 ，胡 东
（1. 西南石油大学 化学化工学院，四川 成都 610500；2. 成都理工大学 油气藏地质及开发工程国家重
点实验室，四川 成都 610500；3. 中国石油西部钻探工程技术研究院，新疆 乌鲁木齐 830001）
摘要：比较了定优胶、黄原胶和魔芋胶三者的流变性、溶液性能、流度控制及提高采收率能力。结果表明，三
者增稠能力及在多孔介质中流度控制能力强弱顺序为：定优胶>黄原胶>魔芋胶。与其他两种生物多糖相比，定
优胶具有更好的耐温、耐盐特性，在高温中表现出良好的长期稳定性。结合石英砂润湿性改性及原液、产出液
流体力学半径变化情况，分析了 3 种多糖建立阻力的主要机理，魔芋胶、黄原胶和定优胶的机械捕集作用对多
孔介质动态滞留量的贡献率分别为 45.90%、60.78%、81.83%，定优胶由于较大的流体力学半径更易被多孔介质
捕集，降低高渗多孔介质水相渗透率能力更强。在室内驱油实验中，定优胶提高采收率高达 24.31%，明显优于
黄原胶（17.02%）及魔芋胶（8.19%），是一种很有前景的提高高温、高盐油藏稠油采收率的驱油剂。
关键词：高温；高盐；聚合物驱；定优胶；流变性；流度控制能力；提高采收率；油田化学品
中图分类号：TE39 文献标识码：A 文章编号：1003-5214 (2020) 04-0841-12

Study on the feasibility of biological polysaccharides in polymer flooding in
high temperature and high salinity reservoirs

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LAI Nanjun , WEN Yiping , QIAO Dongyu , JIA Chao , HE Wei , HU Dong
（1. College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, Sichuan, China;
2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology,
Chengdu 610500, Sichuan, China; 3. Engineering Technology Research Institute CNPC Xibu Drilling Engineering
Company Limited, Urumqi 830001, Xinjiang, China）
Abstract: The rheological property, solution properties, mobility control capability and enhanced oil recovery
(EOR) of diutan gum, xanthan gum and konjac gum were compared. The results show that the order of the
capability of thickening and mobility control in porous media are as follows: diutan gum > xanthan gum >
konjac gum. Compared with other two biological polysaccharides, diutan gum has better temperature and
salt tolerance performances, and exhibits good long-term stability in high temperature environment. Based
on the wettability modification of quartz sand surface (modified into oil wet) and the changes of
hydrodynamics radius of the injected and produced fluids, the main mechanism of establishing resistance of
three biopolysaccharides was analyzed. For konjac gum, xanthan gum and diutan gum, the corresponding
contribution rate of mechanical trapping to the dynamic retention of porous media was 45.90%, 60.78% and
81.83%, respectively. Diutan gum is easier to be trapped by porous media due to its larger hydrodynamics
radius, and has a stronger ability to reduce the water phase permeability of high permeability porous media.
Additionally, in the laboratory oil displacement experiment, the EOR of diutan gum was up to 24.31%
OOIP (original oil in place), significantly higher than that of xanthan gum (17.02% OOIP) and konjac gum
(8.19% OOIP). So, diutan gum is a promising oil displacement agent for enhanced heavy oil recovery in
high temperature and high salinity reservoirs.

收稿日期：2019-09-03; 定用日期：2019-12-02; DOI: 10.13550/j.jxhg.20190840
基金项目：国家自然科学基金(51674208)；四川省科技计划项目（2018JY0515）；中国石油科技创新基金（2018D-5007-0207）；油气
藏地质及开发工程国家重点实验室(成都理工大学)开放基金（PLC2018013）；聚合物分子工程国家重点实验室（复旦大学）开放基金
（K2017-25）
作者简介：赖南君（1979—），男，教授，博士生导师，E-mail：lainanjun@126.com。