Stability of Viscosity of Polymer and ASP Solution Prepared by Produced Water After Aeration

doi:10.3696/j.issn.1006-396X.2010.01.003

Journal of Petrochemical Universities ›› 2010, Vol. 23 ›› Issue (1): 10-15.DOI: 10.3696/j.issn.1006-396X.2010.01.003

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Stability of Viscosity of Polymer and ASP Solution Prepared by Produced Water After Aeration

1. The Second Oil Production Plant of Daqing Oilfield, Daqing Heilongjiang 163000, P.R. China;

2.The Center of EOR, China University of Petroleum, Beijing 102249,P.R.China

Received:2008-12-12 Revised:2009-10-09 Published:2010-03-25 Online:2010-03-25

曝氧污水配制聚合物溶液/ASP复合体系粘度的稳定性

贾凌志,张春玲,白云鹏,褚明艳,金玉素,刘文晶,侯吉瑞

1 .大庆油田第二采油厂, 黑龙江大庆163000 ;
2 .中国石油大学(北京)采收率中心, 北京102249

作者简介:贾凌志(1970 -), 男, 辽宁东沟县, 工程师
基金资助:
国家重点基础研究发展计划(973 计划)(2005CB221300)

Abstract

Abstract:

Because of the low viscosity of the solution prepared by common produced water, the oil recovery was not high. Therefore, the solution has to be prepared with tap water or other water of high quality, which leads to high consumption of fresh water. Produced water after aeration was used to prepare hydrolyzed polyacrylamide (HPAM) or alkaline-surfactant-polymer (ASP) solution. The thermal stability of the prepared solutions was investigated. The influences of shear, sulfate-reducing bacteria (SRB), the alkali and the viscosity stabilizer on the solution viscosity were also investigated. The experiment results show that shear degradation is the major factor in viscosity loss of the solutions and the aeration had good effect to reduce the viscosity loss caused by SRB. The experiment results also show that the HPAM solution has a better capability to keep viscosity in the presence of viscosity stabilizer when it is subjected to 30-day aging, and so do the ASP solution when alkali and viscosity stabilizer are present.

Key words: Produced water , Aeration , Polymer solution , ASP solution , Degradation , Viscosity stabilizer

摘要： 普通污水配制的聚合物溶液因为粘度损失,导致采油效率不高,因此必须使用自来水或更高级别的洁净水,导致耗水量大。对利用曝氧污水配制 HPAM溶液及 ASP复合体系进行了研究,探讨了所配制溶液的热稳定性并系统地考察了剪切、硫酸盐还原菌(SRB)、碱以及粘度稳定剂等对溶液粘度的影响。结果表明,剪切降解是溶液粘度损失的主要因素,污水曝氧可以在很大程度上降低细菌对粘度的伤害。对于 HPAM溶液,添加粘度稳定剂后,无论是否剪切,老化30 d后其粘度保留率都比未加稳定剂时高。对于 ASP复合体系,碱和粘度稳定剂对粘度有很好的保护作用,粘度经过 30 d老化后基本没有损失。

关键词: 油田采出水 , 曝氧 , 聚合物溶液 , ASP 复合体系 , 降解 , 稳定剂

JIA Ling-zhi, ZHANG Chun-ling, BAI Yun-peng,et al. Stability of Viscosity of Polymer and ASP Solution Prepared by Produced Water After Aeration[J]. Journal of Petrochemical Universities, 2010, 23(1): 10-15.

贾凌志,张春玲,白云鹏. 曝氧污水配制聚合物溶液/ASP复合体系粘度的稳定性[J]. 石油化工高等学校学报, 2010, 23(1): 10-15.

Stability of Viscosity of Polymer and ASP Solution Prepared by Produced Water After Aeration

曝氧污水配制聚合物溶液/ASP复合体系粘度的稳定性

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