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高Ca^{2 +} 地层水条件下一种调驱剂的研究

断块油气田

2004年 11卷第06期

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Title

A Prof ile Control and Oil Displacement Agent’s Recovery under High Ca^{2 +} Concentration Formation Water

作者

刘　平　李科生　南国立　郑卫宏　王正坤　刘明峰

Authors

Liu Ping, Li Kesheng , Nan Guoli,et al

单位

中原油田分公司采油二厂

摘要

高温高矿化度地层条件下,交联聚丙烯酰胺调驱剂的稳定性能较差,Ca2 + 等二价金属离子是影响其稳定性的一个重要因素。而Na2 ××可充分利用地层水中的Ca2 + 与其反应产生沉淀起调堵作用,水解产生的碱与原油中的石油酸反应产生表面活性剂起驱油作用。文中研究了Na2 ××产生沉淀的条件,降低油水界面张力的活性能力,对地层的堵塞能力,对比评价了交联聚丙烯酰胺调驱剂与Na2 ××调驱剂的调驱效果。结果表明,Na2 ××调驱效果明显好于交联聚丙烯酰胺调驱剂。

Abstract

The stability property of crosslinked PAM agent which

form under high temperature and high salinity formation

condition is bad . Among which ,Ca^{2 +} is an important factor

which effects the system’s stability property , but Na₂ ××

can react with Ca^{2 +} to achieve plug. The surfactant which got

through the hydrolization’s alkalis and crude oil’s acid can

displace oil .The paper studied the condition of Na₂ ××to

produce preapition , plug property to formation , activity

property of declining interfacial tension.Comparing and

evaluating the effect of the crosslinked HPAM and Na₂ ××

under high temperature and high salinity formation

condition ,the result shows that the effect of profile control

and displacement of Na₂ ×× is obviously superior to

crosslinked HPAM.

关键词：

Na₂××　调驱机理　界面活性　堵塞能力　调驱效果;

Keywords:

Na₂ ××,Mechanism of profile control and displacement , Interfacial activity , Plug property , Effect of profile control and displacement .

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基金项目

DOI

高Ca2 + 地层水条件下一种调驱剂的研究

高Ca^{2 +} 地层水条件下一种调驱剂的研究