耐温抗盐泡沫驱油体系的构建及性能研究  

Construction and Performance of Foam Flooding System with Temperature and Salt Resistance

作　　者：郭程飞 Guo Chengfei(Research Institute of Shaanxi Yanchang Petroleum(Group)Co.,Ltd.,Xi'an Shaanxi 710065)

机构地区：[1]陕西延长石油(集团)有限责任公司研究院,陕西西安710065

出　　处：《中外能源》2023年第5期66-71,共6页Sino-Global Energy

摘　　要：为了改善高温、高盐油藏泡沫驱油体系性能,揭示泡沫性能与发泡液表面性质的关系,针对现场使用的单一表面活性剂(原体系)进行复配优化,并研究泡沫性能与表面张力、表面扩张模量的关系。通过单一发泡剂性能考察、发泡剂复配以及助剂优选,确定复配体系配方为0.105%(质量分数)CHSB+0.045%(质量分数)AES+150mg/L十四醇。研究结果表明,复配体系发挥了协同增效作用,较原体系的泡沫体积、泡沫半衰期以及综合指数分别提高了27%、109%和165%。原体系的发泡性能受表面张力的控制,泡沫稳定性受表面张力和表面扩张模量两个因素的影响。复配体系的发泡性能受表面张力的控制,当发泡剂浓度较低时,泡沫稳定性与表面张力呈负相关;当发泡剂浓度较高时,泡沫稳定性与表面扩张模量呈正相关。研究结果为构建耐温抗盐泡沫驱油体系提供了依据。In order to improve the performance of foam flooding system in high temperature and high salt reservoir and reveal the relationship between foam performance and surface properties of foaming solution,the compound of single surfactant(original system)used in the field is optimized,and the relationship between foam performance and surface tension and surface expansion modulus is studied.The compound is determined to be 0.105%(mass fraction)CHSB+0.045%(mass fraction)AES+150mg/L tetradecanol according to the properties of a single foaming agent,foaming agent compound and additive optimization.The results show that the compound system plays a synergistic effect,and the foam volume,foam half-life and composite index increased by 27%,109%and 165%,respectively,compared with the original system.The foaming properties of the original system are controlled by surface tension and foam stability is affected by surface tension and surface expansion modulus.The foaming properties of the compound system are controlled by surface tension.When the concentration of foaming agent is low,the foam stability is negatively correlated with the surface tension.When the concentration of foaming agent is high,the foam stability is positively correlated with the surface expansion modulus.The research results provide a basis for the construction of temperature-and salt-resistant foam flooding system.

关 键 词：泡沫驱 泡沫性能 表面张力 表面扩张模量 复配体系 耐温抗盐 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]