新型调驱一体化高温烟道气驱用泡沫剂室内评价

邓宏伟

doi:10.3969/j.issn.1006-6535.2021.06.014

特种油气藏 >

2021 , Vol. 28 >Issue 6: 105 - 112

DOI: https://doi.org/10.3969/j.issn.1006-6535.2021.06.014

油藏工程

新型调驱一体化高温烟道气驱用泡沫剂室内评价

邓宏伟

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中国石化胜利油田分公司,山东东营 257015

邓宏伟(1974—),女,高级工程师,1996年毕业于成都理工学院石油工程专业,2010年毕业于中国石油大学(华东)开发地质专业,获硕士学位,现从事油藏开发科研与生产工作。

收稿日期: 2020-12-03

修回日期: 2021-10-12

网络出版日期: 2022-02-16

基金资助

中国石化科技项目“普通稠油复合热流体驱油技术研究与应用”(P17003-2)

收起

Indoor Evaluation of Foaming Agent for New High-temperature Flue Gas Displacement with Function of Profile Control and Oil Displacement

Deng Hongwei

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Sinopec Shengli Oilfield Company, Dongying, Shandong 257015, China

Received date: 2020-12-03

Revised date: 2021-10-12

Online published: 2022-02-16

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摘要

利用注汽锅炉废弃的烟道气等高温热流体驱油,既可以降低碳排放又可以提高石油采收率,是一项具有重大潜力的技术。但是烟道气较高的出口温度和复杂的体系组成严重影响了泡沫剂的性能,针对适合烟道气驱用的泡沫剂研究十分有限。为此研发了一种调驱一体化的高温烟道气驱用三元共聚物(PNCAS)泡沫剂,利用高温高压泡沫仪研究了泡沫剂性能,考察了泡沫剂质量分数、温度、压力和气体组分对泡沫性能的影响。利用填砂管驱替实验装置评价封堵性能,测试了泡沫剂溶液的阻力因子,并进行了双管并联驱替和微观可视化实验。结果表明:PNCAS泡沫剂在300 ℃高温老化后具有较高的阻力因子和较低的油水界面张力,能够大幅度降低烟道气和蒸汽的流速,减少气窜,增加蒸汽波及面积,进而提高稠油采收率。研究成果对稠油烟道气辅助热采开发有重大的指导意义。

关键词： 烟道气; 泡沫; 二氧化碳; 表面活性剂; 稠油

本文引用格式

邓宏伟 . 新型调驱一体化高温烟道气驱用泡沫剂室内评价[J]. 特种油气藏, 2021 , 28(6) : 105 -112 . DOI: 10.3969/j.issn.1006-6535.2021.06.014

Abstract

With significant potential, the technology of displacing reservoir oil with high-temperature thermal fluids such as waste flue gas from steam injection boiler can not only reduce carbon emission,but also improve oil recovery efficiency.However, the higher outlet temperature and complex composition of flue gas seriously affect the performance of foaming agent,and there are few studies on foaming agent suitable for flue gas displacement.In this connection, a terpolymer foaming agent (PNCAS) for high-temperature flue gas displacement with function of profile control and oil displacement was developed,the performance of foaming agent was studied with high-temperature and high-pressure foam tester,and the effects on foaming performance from foaming agent concentration,temperature, pressure an gas components were also analyzed.The sealing performance was evaluated by using the sand-packed tube displacement experimental device,and the resistance factor of the foaming agent solution was tested,and the dual-pipe parallel displacement and microscopic visualization experiments were conducted.The experimental results proved that PNCAS foaming agent had high resistance and low oil-water interfacial tension after aging at 300 ℃,which significantly reduced the flow rate of flue gas and steam,reduced gas channeling, increased the steam sweeping area, and thus improving the recovery efficiency of heavy oil.The study results play a great guiding role in the heavy oil development with flue gas-assisted thermal recovery.

Key words： flue gas; foam; carbon dioxide; surfactant; heavy oil

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