鄂尔多斯盆地延安组低阻油藏流体类型测井评价研究  

Logging evaluation of fluid types in low resistivity reservoir of Yan'an Formation,Ordos Basin

作　　者：孙文轲 冯圣伦 方嘉迪 Sun Wenke;Feng Shenglun;Fang Jiadi(Liaohe Branch of China Petroleum Group Logging Co.,Ltd.,Panjin 124010;Changqing Branch of China Petroleum Group Logging Co.,Ltd.,Xi'an 710201)

机构地区：[1]中国石油集团测井有限公司辽河分公司,辽宁盘锦124010 [2]中国石油集团测井有限公司长庆分公司,陕西西安710201

出　　处：《石化技术》2023年第12期151-153,共3页Petrochemical Industry Technology

摘　　要：以鄂尔多斯盆地西南部地区延安组为例,利用大量岩电、测井、地层水矿化度、试油等资料,开展了低阻油藏流体类型精细测井评价。研究结果表明,延安组油藏电阻率下限可达7Ω·m,低阻与黏土组分、泥浆侵入及高地层水矿化度相关。当地层水矿化度高于50000 mg/L,油藏电阻率通常小于10Ω·m。构建了延安组地层水矿化度的测井解释方法,并确定了延安组油藏的岩电参数。This article takes the Yan’an Formation in the southwestern region of the Ordos Basin as an example,and uses a large amount of data such as rock electricity,logging,formation water salinity,and oil testing to conduct a fine logging evaluation of fluid types in low resistivity oil reservoirs.The research results indicate that the lower limit of the resistivity of the Yan’an Formation oil reservoir can reach 7Ω·m,and the low resistivity is related to the clay component,mud invasion,and high water mineralization.The mineralization degree of local layer water is higher than 50000 mg/L,and the reservoir resistivity is usually less than 10Ω·m.A logging interpretation method for the salinity of formation water in the Yan’an Formation was constructed,and the rock electrical parameters of the Yan’an Formation oil reservoir were determined.

关 键 词：延安组 电阻率 地层水矿化度 孔隙度 流体识别 

分 类 号：P618.13[天文地球—矿床学]