井地电位成像技术在穆格莱德盆地Y油田油藏评价中的应用  

Application of Borehole-Surface Electrical Imaging Logging Technology for Evaluating Reservoirs in Y Oilfield in Muglad Basin

作　　者：李光辉 孔庆东 曾玉强 LI Guanghui;KONG Qingdong;ZENG Yuqiang(GWDC International Logging Company,Beijing 100101,China)

机构地区：[1]中国石油长城钻探国际测井公司,北京100101

出　　处：《测井技术》2020年第1期77-81,共5页Well Logging Technology

摘　　要：针对苏丹穆格莱德盆地油田剩余油分布不清、注水效果不明的问题,利用井地电位成像技术优选Y油田开展了油藏评价研究,系统总结了该技术的适用条件。通过地表电位数据加密测量、建模和正反演成像优化的方法,得到工区三维任意方向的电阻率和饱和度切片。横向饱和度切片研究结果表明工区剩余油富集区主要呈块状展布,纵向饱和度切片研究成果展现了不同储层的油水空间分布特征,高分辨率1 m的延层饱和度切片研究结果表明注水井的水驱效果较明显,注水前缘通过分析认为受物性影响较大。测试含水率结果和井地电位饱和度结果相一致,证明了研究的可靠性,以及该技术在苏丹油田的适用性,也为穆格莱德盆地油田的下步油藏开发方案调整指明了方向。To solve the problem that the distribution of remaining oil and the effect of water injection is not clear in Muglad Basin,Sudan,the borehole-surface electrical imaging logging technology is used to conduct reservoir evaluation in Y oilfield,and the application conditions of the technology is summarized.After intensively measuring surface electrical potential and improving models and inversion imaging,3D slices of resistivity and saturation in any direction are obtained.The lateral saturation slices show that the zones with rich remaining oil are blocks,the vertical saturation slices indicate the distribution characteristic of oil and water in different areas,the saturation slices with one-meter resolution indicate good water injection effect,and the water front is obviously affected by reservoir properties.The water cut from well test data is consistent with the saturation from borehole-surface logging data,which proves the reliability and applicability of this study in Sudan oilfields.Also,the study result is helpful to guiding the reservoir development plan in Muglad basin.

关 键 词：井地电位 三维成像 剩余油分布 注水评价 适用性分析 苏丹油田 

分 类 号：P631.84[天文地球—地质矿产勘探]