吴洁璞,张红玲,周晓峰,王雪冰,李尧,陆天源

• 1:中国石油大学(北京)石油工程学院
• 2:中国石油拉美(秘鲁)公司

摘要(Abstract)：

为研究鄂尔多斯盆地延长组低渗透储层的渗流特征并探讨其分类标准,对岩心气测渗透率(Kg)和水测渗透率(Kw)进行了测定分析。研究结果表明,Kg与Kw线性相关性良好,随Kg增大Kw也在增大,但不同Kg区间Kw增大幅度差异明显,总体表现为Kg<0.5×10~(-3)μm~2、0.5×10~(-3)μm~20.8×10~(-3)μm~2三段式,Kw与Kg拟合直线段的斜率依次为0.0961、1.2993、0.2103,Kg/Kw平均值依次为19.27、3.97、3.22,(Kg-Kw)/Kg的变化范围依次为95.71%~92.12%、81.42%~66.08%、71.13%~65.54%。鉴于Kw随Kg的变化规律,建议取气测渗透率0.5×10~(-3)μm~2和0.8×10~(-3)μm~2分别作为致密储层、超低渗储层的上限,进一步精细划分低渗透储层。

关键词(KeyWords)： 气测渗透率;水测渗透率;低渗透储层;储层分类;延长组;鄂尔多斯盆地

Abstract:

Keywords:

基金项目(Foundation): 国家科技重大专项“特低渗油层有效开发技术”(编号:2011ZX05013-006)

作者(Author): 吴洁璞,张红玲,周晓峰,王雪冰,李尧,陆天源

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