现场水配制纳米驱油剂及其驱油机理

doi:10.7623/syxb202103008

石油学报 ›› 2021, Vol. 42 ›› Issue (3): 350-357.DOI: 10.7623/syxb202103008

现场水配制纳米驱油剂及其驱油机理

王小聪^1,2,3,4, 雷群^2,3, 肖沛文^3,4, 王平美^3,4, 杨占德⁵, 韩雪^3,4, 罗健辉^3,4, 叶银珠^3,4

1. 中国科学院大学北京 100049;
2. 中国科学院渗流流体力学研究所河北廊坊 065007;
3. 中国石油勘探开发研究院北京 100083;
4. 中国石油天然气集团有限公司纳米化学重点实验室北京 100083;
5. 中国石油长庆油田公司陕西西安 710081

收稿日期:2020-02-11 修回日期:2021-01-06 出版日期:2021-03-25 发布日期:2021-04-09
通讯作者: 雷群,男,1963年8月生,1983年获西南石油学院学士学位,2004年获中国石油大学(北京)博士学位,现为中国石油勘探开发研究院教授级高级工程师,主要从事采油、采气工程技术方面的研究。Email:leiqun@petrochina.com.cn
作者简介:王小聪,男,1991年4月生,2013年获太原工业学院学士学位,现为中国科学院渗流流体力学研究所博士研究生,主要从事纳米驱油技术、化学驱三次采油方面的研究。Email:xcwang@petrochina.com.cn
基金资助:
中国石油天然气股份有限公司科学研究与技术开发项目“纳米智能驱油剂研制”（2018A-0907）和中国石油天然气集团有限公司纳米化学重点实验室实验新方法研究及运行管理项目（2020D-5006-82）资助。

Preparation of nano-oil-displacing agent with on-site water and its oil displacement mechanism

Wang Xiaocong^1,2,3,4, Lei Qun^2,3, Xiao Peiwen^3,4, Wang Pingmei^3,4, Yang Zhande⁵, Han Xue^3,4, Luo Jianhui^3,4, Ye Yinzhu^3,4

1. University of Chinese Academy of Sciences, Beijing 100049, China;
2. Institute of Porous Flow and Fluid Mechanics, Chinese Academy of Sciences, Hebei Langfang 065007, China;
3. PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China;
4. CNPC Key Laboratory of Nano Chemistry (KLNC), Beijing 100083, China;
5. PetroChina Changqing Oilfield Company, Shaanxi Xi'an 710081, China

Received:2020-02-11 Revised:2021-01-06 Online:2021-03-25 Published:2021-04-09

摘要/Abstract

摘要： 采用氧谱核磁共振（¹⁷O-NMR）技术研究iNanoW1.0纳米粒子与长庆姬塬油田现场水配制纳米驱油剂的可行性。实验结果表明，iNanoW1.0纳米粒子能够减弱具有较高矿化度的现场水分子间的氢键缔合作用。对长庆姬塬油田现场水，质量分数为0.1%的纳米驱油剂为最佳使用浓度。利用低场核磁共振（LF-NMR）岩心驱替实验研究了纳米驱油剂对低—超低渗透岩心的驱替效果。实验结果表明，现场水配制的纳米驱油剂能有效降低低—超低渗透岩心中流体的启动压力，尤其对于岩心小孔隙部分扩大波及体积明显，可以实现提高采收率10.29%~11.44%。

关键词: 纳米驱, 水驱, 扩大水驱波及体积, 提高采收率, 水分子网络结构

Abstract: Using ¹⁷O nuclear magnetic resonance (¹⁷O-NMR) technology, this paper studies the feasibility of preparing nano-oil-displacing agent with iNanoW1.0 nano particles and on-site water from the Changqing Jiyuan oilfield. The experimental results show that iNanoW1.0 nano particles can weaken the hydrogen-bonding interaction between on-site water molecules with high salinity. For the on-site water of the Changqing Jiyuan oilfield, the nano-oil-displacing agent with the mass fraction of 0.1% is the optimal working concentration. The low-field nuclear magnetic resonance (LF-NMR) core displacement experiment is used to study the displacement effect of nano-oil-displacing agent on low-ultra-low permeability cores. The experimental results show that the nano-oil-displacing agent prepared with on-site water can effectively reduce the starting pressure of fluid in the low-ultra-low permeability core, especially for the small pore part of the core, swept volume enlargement is obvious, which can realize the enhanced oil recovery (EOR) of 10.29% -11.44%.

Key words: Nano flooding, water flooding, enlarging swept volume of water flooding, enhancing oil recovery, network structure of water molecules

中图分类号:

TE357.4

王小聪, 雷群, 肖沛文, 王平美, 杨占德, 韩雪, 罗健辉, 叶银珠. 现场水配制纳米驱油剂及其驱油机理[J]. 石油学报, 2021, 42(3): 350-357.

Wang Xiaocong, Lei Qun, Xiao Peiwen, Wang Pingmei, Yang Zhande, Han Xue, Luo Jianhui, Ye Yinzhu. Preparation of nano-oil-displacing agent with on-site water and its oil displacement mechanism[J]. Acta Petrolei Sinica, 2021, 42(3): 350-357.

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现场水配制纳米驱油剂及其驱油机理

Preparation of nano-oil-displacing agent with on-site water and its oil displacement mechanism

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