井震结合综合评价低渗透裂缝油藏水驱效果  

Well-seismic Comprehensive Assessment Water Injection Effect for X Well Group

作　　者：李宁[1] 郑小敏 刘东明 王中涛 温柔 李栋 

机构地区：[1]中国石油集团测井有限公司,陕西西安710077

出　　处：《测井技术》2017年第6期718-722,共5页Well Logging Technology

摘　　要：低渗透裂缝油藏注水开发时仅通过注采关系分析无法反映注水见效层位及方向。以长庆油田某区块低渗透裂缝油藏注水开发X井组为例,通过注采关系分析,采用俄罗斯宽能域-氯能谱测井技术直观显示近井区注水见效层位、油藏水驱动用程度,评价剩余油开采潜力;以井点处泥质含量、含油饱和度等测井计算值为约束,在井间利用波阻抗进行反演,得到井间泥质含量、含油饱和度剖面,并结合井间构造信息揭示远井区地层物性及剩余油分布,对油藏水驱效果进行综合评价,使结果更加全面、合理、可信度更高,克服了仅用单一方法评价的局限性。Water injection response level and direction are not reflected in the analysis of the injection-production relationship for low permeability fractures.Taking X well group of Changqing oilfield as an example,the injection-production relationship analysis proves wide energy range-chlorine spectrum residual oil logging evaluation technology can reflect dynamic characteristics of water flooding and evaluate residual oil recovery potential close to well area.Based on the log values of shale content and oil saturation in the well point,the inversion is carried out by using the wave impedance between the wells,and the inter well mud content,oil saturation profile and the inter well structural information are obtained.It can reveal the distribution of stratigraphic property and residual oil in the far well area.Comprehensive utilization of the various methods of reservoir water flooding effect evaluation shows the result is more comprehensive,reasonable and higher credibility which overcomes the limitations of single method evaluation.

关 键 词：井间地震 注采关系 宽能域-氯能谱 剩余油 水驱效果 

分 类 号：P631.84[天文地球—地质矿产勘探]