| 油井选堵酸化新技术初探 |
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| 引用本文： | 佘跃惠,张小平.油井选堵酸化新技术初探[J].石油天然气学报,1996,18(1):74-78. |
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| 作者姓名： | 佘跃惠 张小平 |
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| 作者单位： | 江汉石油学院应用化学系 |
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| 摘 要： | 针对暂堵酸化技术存在的问题，提出了一种油井先堵酸化的新技术，即在注酸前注入选堵剂封堵高渗透水层，然后注入酸液以酸化低渗透层和污阻部位。研制了符合最终堵水不堵油要求的选堵剂，描述了这一新技术的。通过模拟试验，考察了新型选堵剂的选堵效果、封堵强度及酸化转向率等。
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| 关 键 词： | 封堵 酸化 封堵剂 化学封堵 油井 |
A New Technique for Selective Plugging and Acidizing Oil Wells |
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| She Yuehui, Zhang Xiaoping, Wang Zhengliang, Zhao Xiutai Yu Weichu, Xiang Tingsheng.A New Technique for Selective Plugging and Acidizing Oil Wells[J].Journal of Oil and Gas Technology,1996,18(1):74-78. |
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| Authors: | She Yuehui Zhang Xiaoping Wang Zhengliang Zhao Xiutai Yu Weichu Xiang Tingsheng |
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| Abstract: | A new technique for selective plugging and acidizing oil wells is presented based on the principle of temporary plugging and acidizing in which selective plugging agent is first injected to block high permeable zones, then acid is injected to acidize low perlmeable and contaminated ones. The results of simulation test show that oilsoluble polymer plugging agents have good selectivity and applicability to oil formations with different temperature, their breakthrough pressure gradient is greater than 25 MPa/ m and the effectiveness of acidizing diversion is over 85%. |
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| Keywords: | selective plugging selective acidizing plugging agent chemical plugging simulation test |
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