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安塞油田表面活性剂驱油体系室内研究 预览 被引量:2

Surfactant Oil Displacement System Research of Ansai Oilfield
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摘要 考察了阴离子-非离子型表面活性剂体系SKDAS的界面张力、乳化能力、吸附性能、配伍性能、降压增注能力,并进行了室内驱油实验。结果表明,0.1%数0.9%的SKDAS与安塞油田原油的最终界面张力维持在10-3m N/m数量级。在矿化度为10数90 g/L时,0.5%的SKDAS矿化水溶液与原油之间的界面张力均在10-3m N/m数量级,耐盐性较好。其对原油具有较强的乳化能力,且加量越大,乳化能力越强。0.1%数0.5%SKDAS溶液在油砂中的吸附量为0.11数0.14 mg/g。SKDAS和安塞油田清水、采出水配伍性良好。当SKDAS质量分数由0.3%增至0.7%时,可在水驱基础上提高采收率10.41%数12.84%,能满足安塞油田表面活性剂驱油的要求。 Through the study on interfacial tension,emulsifying ability,adsorptive property,compatibility,decompression and augmented injection capacity,and oil displacement experiment,the performance of anionic-nonionic surfactant(named SKDAS)was evaluated. The results showed that the final interfacial tension between,0.1% —0.9% SKDAS and the oil of Ansai oilfield maintained to 10~(-3)m N/m order of magnitude. The interfacial tension of 0.5% SKDAS could reach 10~(-3)m N/m order of magnitude when the salinity was 1×10~4—9×10~4mg/L,showing good salinity tolerance. SKDAS had strong emulsifying ability for crude oil.The higher concentration,the better emulsifying property was. The adsorption capacity of SKDAS solution in oil sands was 0.11—0.14 mg/g when the mass fraction of SKDAS was 0.1%—0.5%。The compatibility between SKDAS and clear water or produced water of Ansai oilfield was good. When the mass fraction of SKDAS increased from 0.3% to 0.7%,SKDAS flooding could improve the oil recovery 10.41% —12.84% based on water flooding system,which could satisfy the requirement of surfactant oil displacement in Ansai oilfield.
作者 杨剑 黄战卫 董小丽 刘玉梅 YANG Jian;HUANG Zhanwei;DONG Xiaoli;LIU Yumei; (1. The First Oil Production Factory, Changqing Oilfield Company, PetroChina, Yanan, Shaanxi 716000, P R of China; 2. Technical testing center, Changqing Oilfield Company, PetroChina, Xi' an, Shaanxi 710018, P R of China; 3. Department of Oilfield Development, Changqing Oilfield Company, PetroChina, Xi'an, Shaanxi 710018, P R of China)
出处 《油田化学》 CAS CSCD 北大核心 2015年第4期559-563,共5页 Oilfield Chemistry
关键词 低渗透油藏 表面活性剂 界面张力 驱油效率 安塞油田 low permeability reservoir surfactant interfacial tension oil displacement efficiency Ansai oilfield
作者简介 杨剑(1983-),女,采油工程师,中国石油大学(北京)石油与天然气专业硕士(2013),现从事油田提高采收率工作,通讯地址:716000陕西省延安市宝塔区长庆油田第一采油厂,电话:029-86506744,E-mail:yjian2_cq@petrochina.com.cn。
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