柴达木盆地三湖地区第四系高泥质含量低电阻率气层解释方法
Well Logging Technology(2007)
Abstract
基于柴达木盆地三湖地区第四系生物气藏地质条件和沉积特点,针对用常规解释方法和标准识别该区高泥质含量低电阻率气层存在的困难,应用三孔隙度比值法与差值法对已有的试井资料进行重新认识和解释,建立了三孔隙度比值法与差值法识别该区高泥质含量低电阻率气层的标准和三孔隙度比值与差值交会图版。三孔隙度比值与差值交会图和常规含气饱和度与孔隙度交会图相比较,并试气验证,前者解释符合率提高了3%。该解释方法可弥补常规解释方法的不足,提高该区高泥质含量低电阻率气层的解释准确度。
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Key words
lacustrine facies biogas reservoir,low resistivity,porosity difference,porosity ratio,high shale content,log interpretation
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