孙宜朴,李维,张军涛,李淑筠,范柏氵育

• 1:中国石化石油勘探开发研究院
• 2:中国石油大学(北京)地球科学学院

摘要(Abstract)：

为了对鄂尔多斯盆地奥陶系马家沟组风化壳气藏进行有效的岩性识别和气层识别,通过岩心描述、薄片观察、物性测试及测井分析等手段,结合试气成果,明确了风化壳储层的岩石学特征、孔隙结构特征以及电性和含气性特征,并在此基础上建立了岩性和气层解释标准。研究认为:含膏白云岩是盆地中东部风化壳主要储层类型,膏模孔是主要储集空间;储层低孔低渗,溶孔发育的非均质性加剧了储层非均质性;密度-深侧向电阻率交会图版可以很好地区分灰岩和白云岩,声波时差-深侧向电阻率交会图版也有较好的识别效果;应用声波时差-深侧向电阻率交会图版和密度-深侧向电阻率图版可以确定气层的电性下限并对气层进行有效识别。

关键词(KeyWords)： 岩石孔隙特征;含膏白云岩;气层识别;四性关系;马家沟组;鄂尔多斯盆地

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金“济阳坳陷天然气中氢气的地球化学特征”(编号:41102075)

作者(Author): 孙宜朴,李维,张军涛,李淑筠,范柏氵育

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