摘要
电成像测井资料具有分辨率高、井眼覆盖率高、可探测冲洗带信息的特点,在一定程度上可反映近井壁流体分布。通过与常规测井资料计算的变胶结指数m和孔隙度相结合,求取储层的视地层水电阻率分布谱,并提取谱的均值与方差参数作交会图,建立储层流体性质识别图版,在中低孔隙度渗透率石灰岩地层的油层识别中发挥了重要作用。通过对比含不同流体储层及非储层视地层水电阻率谱的特征,拾取特征参数,并结合孔隙度信息,建立了研究区特低孔隙度渗透率白云岩储层流体性质识别图版,气层识别符合率达91.7%,排除了非储层视地层水电阻率谱与气层相近的干扰,在塔东地区碳酸盐岩储层中应用见到较好效果。
Micro-electric imaging logging with high resolution and borehole coverage, can detect information of flushed zone and, to a certain extent, reflect fluid distribution of formations near borehole.Associated with variable bond index m and effective porosity by conventional logging, an apparent formation water resistivity distribution spectrum is developed using imaging logging data, and the mean and variance are extracted to make a cross-plot, then a reservoir fluid property identification chart is established, which plays an important role in fluid identification of low porosity-permeability limestone reservoirs.In this paper, characteristics of the spectrum of different fluid-bearing reservoirs and non-reservoirs are compared, by their characteristic parameters and the relevant porosity, a fluid identification chart for extremely low porosity-permeability dolomite reservoirs of the area is developed, which gets a gas layer identification coincidence of 91.7%, excluded the interruption that the spectrum of formation water resistivity of non-reservoirs is similar to gas reservoirs, so showing a good application result in eastern Tarim carbonate reservoirs.
出处
《测井技术》
CAS
CSCD
2017年第4期412-415,共4页
Well Logging Technology
基金
大庆油田有限责任公司塔东区块下古生界碳酸盐岩储层测井评价技术研究项目(201505011)
关键词
测井解释
碳酸盐岩
电成像测井
视地层水电阻率
流体识别
log interpretation
carbonate reservoir
micro-electric imaging logging
apparent formation water resistivity
fluid identification
