W气田消泡剂配伍性研究

Study on Compatibility of Defoamer in W Gas Field

为保证W气田泡排技术的有效开展,进行了消泡工艺的优化研究,通过消泡剂与现场凝析油/乳化油、现场破乳剂的配伍性实验,明确了消泡剂与现场水体的配伍性。结果表明,消泡剂与乳化油/凝析油配伍性良好并未生成沉淀或发生不良反应,消泡剂的消泡能力并未受到凝析油的影响,且在共同消泡作用下,不同程度提升了消泡率,缩短了消泡时间。消泡剂与现场破乳剂PR-3比例依次为1:0.5、1:1、1:2时,消泡率出轻微现降低趋势,消泡时间出现小幅度延长趋势,配伍性一般。该研究结果对W气田消泡工艺的消泡剂选择和使用提供了依据。

In order to ensure the effective development of foam drainage technology in W gas field,the optimization of defoaming process was carried out.The compatibility of defoamer with on-site condensate/emulsified oil and on-site demulsifier was determined by experiments.The results showed that the compatibility of defoamer and emulsified oil/condensate oil was good,and no precipitation or adverse reactions occurred.The defoaming ability of defoamer was not affected by condensate oil.Under the combined defoaming effect,the defoaming rate was improved to varying degrees and the defoaming time was shortened.When the ratio of defoamer to on-site demulsifier PR-3 was 1:0.5,1:1 and 1:2,the defoaming rate showed a slight downward trend,and the defoaming time showed a slight extension trend,with general compatibility.The results of this study provide a basis for the selection and use of defoamers in the defoaming process of W gas field.