公开(公告)号：US20160290942A1

公开(公告)日：2016-10-06

申请号：US14673043

申请日：2015-03-30

申请人： Haijing Wang ,  Scott Jeffrey Seltzer ,  Boqin Sun

发明人： Haijing Wang ,  Scott Jeffrey Seltzer ,  Boqin Sun

IPC分类号： G01N24/08

CPC分类号： G01N24/081 ,  G01N24/082 ,  G01R33/448

摘要： A disclosed method for characterizing gas adsorption on a rock sample includes: measuring a nuclear magnetic resonance (NMR) response of the rock as a function of surrounding gas pressure along an isotherm; transforming the NMR response to obtain a Langmuir pressure distribution of gas adsorption on the rock sample; and displaying the Langmuir pressure distribution. The Langmuir pressure distribution may be shown in one dimension (e.g., contribution to signal response versus Langmuir pressure), or may be combined with additional pressure-dependencies such as spin-lattice relaxation time (T1), spin-spin relaxation time (T2), and chemical shift (δ) to form a multi-dimensional distribution. The method can further include: identifying peaks in the Langmuir pressure distribution; and associating a gas storage mechanism and capacity with each peak. It may still further include: exposing the rock sample to a treatment fluid to obtain an altered sample; repeating said measuring and transforming operations with the altered sample; and comparing the Langmuir pressure distributions to determine effects of the treatment.

摘要翻译： 用于表征岩石样品上的气体吸附的公开方法包括：测量沿着等温线的围绕气体压力的函数的岩石的核磁共振（NMR）响应; 转化NMR响应，获得岩石样品上气体吸附的Langmuir压力分布; 并显示Langmuir压力分布。 Langmuir压力分布可以在一个维度上显示（例如，对信号响应对Langmuir压力的贡献），或者可以与额外的压力依赖性组合，例如自旋 - 晶格弛豫时间（T1），自旋 - 自旋弛豫时间（T2） ，和化学位移（δ）形成多维分布。 该方法还可以包括：识别Langmuir压力分布中的峰值; 并将气体存储机构和容量与每个峰值相关联。 它还可以进一步包括：将岩石样品暴露于处理液以获得改变的样品; 用改变的样品重复所述测量和变换操作; 并比较Langmuir压力分布来确定治疗效果。