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通过使用矿物分析方法对页岩水库敏感性的研究

Yinhua Liu^1,2, Jianguang Wei^3,4, Jingde Lin^1,2

¹Engineering Technoleogy Research Institute, PetroChina Coalbed Methane Company Limited, Xi'an 710082, China.

|May 13, 2024

概括

页岩矿物成分在流体相互作用后发生显著变化,石英,高和矿含量下降. 这影响了页岩孔结构和对滑水的透性敏感性.

科学领域:

地质化学地质化学
石油工程是石油工程中的一个.
材料科学是一种材料科学.

背景情况:

页岩水库表现出复杂的矿物质学,影响孔隙结构和流体流动.
了解矿物质对外部流体的敏感性对于水库管理至关重要.

研究的目的:

调查滑水和反流液对页岩矿物成分的影响.
为了确定页岩孔结构的敏感性和透性到特定的矿物质,当暴露于滑水.

主要方法:

在页岩核样本上进行了X射线衍射 (XRD) 实验.
分析矿物成分在与滑水和反流液相互作用之前和之后的变化.

主要成果:

石英和粘土矿物质在页岩核心中占主导地位;石和罗多克罗西特存在少量.
页岩矿物质成分显著改变了后流体相互作用,石英,高和矿含量显著下降.
在水暴露后,石英,高和矿含量平均分别下降了5.1%,4.6%和0.9%.

结论:

页岩矿物学对外部流体,特别是滑水很敏感.
石英,考利尼特和矿是影响页岩孔隙结构和对滑水的透性敏感性的关键因素.

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Qualitative Analysis

Qualitative Analysis

For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
For instance, group IV...