耐高温耐盐氮气泡沫调驱实验研究及应用  

Experiment research and application of high temperature and high salt nitrogen foam profile control and flooding

作　　者：孙同成[1] 李亮[1] 周珺[2] 

机构地区：[1]中国石化西北油田分公司,新疆乌鲁木齐830011 [2]中国石油化工股份有限公司石油工程技术研究院,北京100101

出　　处：《石油化工应用》2016年第5期9-13,23,共6页Petrochemical Industry Application

基　　金：国家科技重大专项;项目编号:2011ZX05005-006;国家自然科学基金;项目编号:51304032

摘　　要：塔河油田碎屑岩水平井在长期生产后,底水抬升不均匀,导致平面低渗段和垂向上高部位潜力难以动用。氮气泡沫调驱技术可以有效地降低含水率,调整注入剖面,扩大波及体积和水平井顶部油层的动用程度,提高底水油藏采收率。针对塔河油田高温（120℃）、高矿化度（21×10~4mg/L）的地层条件,筛选出耐高温耐盐的HTS-1起泡剂。通过填砂管实验测试了泡沫体系的封堵性能,实验结果表明,氮气泡沫对高渗透率的地层具有较好的封堵性能,对低渗透率地层的封堵效果较差。利用数值模拟技术,优化了氮气泡沫的注入方式和工艺参数。现场的施工应用结果表明,注入氮气泡沫调驱后对应采油井组的采油量增加明显,有效地提高了油藏的采收率。When horizontal well producing for a long time in Tahe oilfield, bottom water would be lift uneven,which lead to the oil in low permeability plane area and structural high part are difficult to use.Nitrogen foam flooding technology can effectively reduce the moisture content, modify injection profile,expand swept volume and increase the bottom water reservoir recovery efficiency.For the high temperature（120 ℃） and high salinity（21 ×104mg/L）reservoir in Tahe oilfield,the foaming agent HTS-1 has been screen out.Sealing performance of the foam system has been test through the sand filling tube experiment.The experimental results show that the nitrogen foam has good sealing performance in high permeability formation and poor sealing effect in low permeability formation.Nitrogen foam injection mode and technological parameters have been optimized by using numerical simulation.Field applica-tion results show that after the injection of nitrogen foam,oil production of corresponding production well group are significantly increased and reservoir recovery efficiency is effectively improved.

关 键 词：高温高盐 氮气泡沫 底水油藏 注入方式 气液比 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]