致密油藏混合润湿性测试新方法及其应用

doi:10.7623/syxb201703008

石油学报 ›› 2017, Vol. 38 ›› Issue (3): 318-323.DOI: 10.7623/syxb201703008

致密油藏混合润湿性测试新方法及其应用

杨正明^1,2, 黄辉², 骆雨田¹, 雷启鸿³, 李海波¹

1. 中国石油勘探开发研究院廊坊分院渗流流体力学研究所河北廊坊 065007;
2. 中国科学院大学物理学院北京 101408;
3. 中国石油长庆油田公司勘探开发研究院陕西西安 710018

收稿日期:2016-05-16 修回日期:2016-11-30 出版日期:2017-03-25 发布日期:2017-04-07
通讯作者: 杨正明,男,1969年1月生,1991年获石油大学(华东)学士学位,2004年获中国科学院博士学位,现为中国石油勘探开发研究院廊坊分院渗流流体力学研究所副总工程师、高级工程师,主要从事低渗/致密油气田物理模拟、渗流理论和三次采油方面的研究工作。Email:yzhm69@petrochina.com.cn
作者简介:杨正明,男,1969年1月生,1991年获石油大学(华东)学士学位,2004年获中国科学院博士学位,现为中国石油勘探开发研究院廊坊分院渗流流体力学研究所副总工程师、高级工程师,主要从事低渗/致密油气田物理模拟、渗流理论和三次采油方面的研究工作。Email:yzhm69@petrochina.com.cn
基金资助:
国家重大科技专项（2016ZX05013-001）和中国石油天然气集团公司重大基础科技攻关课题项目（2014B-1203）资助。

New measurement method of mixed wettability in tight oil reservoir and its application

Yang Zhengming^1,2, Huang Hui², Luo Yutian¹, Lei Qihong³, Li Haibo¹

1. Institute of Porous Flow & Fluid Mechanics, Langfang Branch, PetroChina Research Institute of Petroleum Exploration and Development, Hebei Langfang 065007, China;
2. School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 101408, China;
3. Exploration & Development Research Institute, PetroChina Changqing Oilfield Company, Shaanxi Xi'an 710018, China

Received:2016-05-16 Revised:2016-11-30 Online:2017-03-25 Published:2017-04-07

摘要/Abstract

摘要：

致密油储层矿物成分的复杂性和分布的随机性决定了岩石孔隙表面的润湿性是不均匀的。将致密油藏物理模拟实验方法和核磁共振技术相结合，提出了致密油藏混合润湿性测试新方法。在此基础上，确定出混合润湿指数的分类界限，探讨了致密油藏岩心原始润湿性测量方法。研究表明：致密油岩心经过洗油后，所测试的混合润湿指数大多数位于0~0.4，处于弱亲水；而未洗油的新鲜岩样，同一块致密油岩心所测试初始状态下的混合润湿指数要大于原始状态下的混合润湿指数；所测试的致密油岩心在原始地层条件下大部分呈弱亲油，少部分呈弱亲水。这种测试新方法可以对致密油藏有效开发提供可靠的技术参数。

关键词: 致密油藏, 混合润湿, 核磁共振, 实验, 分类界限

Abstract:

The uneven wettability of rock pore surface is determined by the complexity and distribution randomness of mineral compositions in tight oil reservoirs. Based on the physical simulation experiment of tight oil reservoir in combination with NMR technique, a new experimental method was put forward to test the mixed wettability in tight oil reservoir. On this basis, this paper studied the classification limit of mixed wettability index, and explored the measurement method for testing the original wettability of cores in tight oil reservoirs. The research indicated that for the cores in tight reservoir after oil washed, the mixed wettability indices were mostly within the range of 0-0.4; the test core material was weak water-wet characteristic. But for the fresh rock samples not treated by oil, the mixed wettability index of the same tight oil core in the initial state was larger than that in original state. A majority of the tested tight oil cores showed the weak oil-wet character in original formation conditions, while a minority of them was weak water-wet. The results provide important basic theoretical support for the effective development of tight oil reservoir.

Key words: tight oil reservoir, mixed wettability, nuclear magnetic resonance, experiment, classification limit

中图分类号:

TE135

杨正明, 黄辉, 骆雨田, 雷启鸿, 李海波. 致密油藏混合润湿性测试新方法及其应用[J]. 石油学报, 2017, 38(3): 318-323.

Yang Zhengming, Huang Hui, Luo Yutian, Lei Qihong, Li Haibo. New measurement method of mixed wettability in tight oil reservoir and its application[J]. Acta Petrolei Sinica, 2017, 38(3): 318-323.

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致密油藏混合润湿性测试新方法及其应用

New measurement method of mixed wettability in tight oil reservoir and its application

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