文章摘要
利用储层成垢离子物源实现优势通道调整提高水驱效率
Improvement of Water Flooding Efficiency by Using the Reservoir Forming Ion Source to Realize the Adjustment of the Dominant Channel
  
DOI:
中文关键词: 降本增效  深部调驱  转向剂  机凝胶  本源成垢离子  现场试验
英文关键词: reducing the cost and increasing efficiency  deep profile  diverting agent  inorganic gel  native scale formation ion  field test
基金项目:新疆低渗砂砾岩油藏 CO2驱油与埋存关键技术研究(项目编号 0001GJ01130050160403)。
作者单位
唐孝芬 1,2,邵黎明 1,2,覃 和 1,刘淑娟 3,牛丽伟 4,叶银珠 1,2 1. 中国石油勘探开发研究院北京 1000832. 中国石油天然气集团公司采油采气重点实验室北京 1000833. 中国科学院兰州化学物理研究所甘肃 兰州 7300004. 东北石油大学石油工程学院黑龙江 大庆 163000 
摘要点击次数: 67
全文下载次数: 
中文摘要:
      为了解决 CaCl2水型油田地层水的高矿化度对深部液流转向剂性能的负影响,降低转向剂成本,进而实现降本增效的目的,本文研究了一种由多种机材料经特殊工艺加工合成的复合硅酸盐微凝胶转向剂 OMGL在CaCl2水型油田高矿化度地层水中的凝胶性能、封堵转向性能及现场应用情况。该转向剂主要利用高矿化度地层水(注入水)中的 Ca2+、Mg2+作为交联剂发生交联反应。室温下,0.6%OMGL在油田水中凝胶化反应在 12~ 24h内完成;随着 OMGL浓度升高,体系的凝胶化程度增高,组分为 3%OMGL+1%CaCl2水溶液体系的凝胶化程度达 100%。OMGL与地层水中的 Ca2+、Mg2+发生凝胶反应形成的粒径 0.05~ 2 μm的微凝胶,对低渗小孔基质进入困难,而在优势通道岩石骨架表面通过—Si—O—Si—键形成稳定的微凝胶涂层。转向剂OMGL对渗透率级差在10~ 50倍范围岩心的调堵效果比较理想。该转向剂已在国内外不同温度不同矿化度条件油藏开展深部调驱现场试验,改善水驱效果良好,注水压力平均升高2~ 3 MPa,对应油井增油效果良好,有效期在1年以上。图12表3参10
英文摘要:
      In order to solve the negative influence of the high salinity of formation water on the performance of the deep liquid flow divertring agent in the CaCl2 water type oilfield,reduce the cost of the steering agent,and then achieve the purpose of reducing the cost and increasing the efficiency,the gel performance,plugging and diverting performance and field application of a composite silicate microgel diverting agent OMGL,synthesized by a variety of inorganic materials through special processes,in the CaCl2 water type formation water was discussed. The diverting agent OMGL reacted with Ca2+ and Mg2+ in high salinity formation water(injected water). The gelation reaction of 0.6%OMGL in oil field water completed within 12—24 h at room temperature. With the increase of OMGL concentration,the gelation degree of the system increased and the gelation degree of the 3%OMGL+1%CaCl2 aqueous solution system was 100%. The microgel with particle size of 0.05—2 μm was formed by the gel reaction of OMGL with Ca2+ and Mg2+ in the formation water,which was difficult to enter the low permeability microporous matrix,and a stable microgel coating was formed through the —Si—O—Si— bond on the surface of the rock skeleton of the dominant channel. The diverting agent OMGL was ideal for plugging the core with a permeability ratio of 10数 50 times. This kind of diverting agent had been carried out in the field experiments with different temperatures and different salinity conditions at home and abroad,the effect of the enhancement of oil recovery of water flooding was good,the water injection pressure increasing by 2—3 MPa,and the oil increasing effect being good and the effective period being over 1 years.
查看全文   查看/发表评论  下载PDF阅读器
关闭
点击这里给我发消息

点击这里给我发消息