Rapid analysis of oil reservoir rocks and their applications

Abstract

In our previous papers, we have developed rapid and simple analytical methods of elements and minerals in oil reservoir rocks, for reservoir characterization and the solution of production troubles. Taking account of the localization of mineral or elements in rocks, rapid analysis of many samples were required.
For elemental analysis, we used the EDX-FP (Energy Dispersive X-ray Fluorescence & Fundamental Parameter) methods, and improved analytical accuracy by spectrum matching method. For analysis of clay carbonate minerals, we used the DRS (Diffuse Reflectance IR Spectrometry).
These analitycal methods were applied for real rock samples, and it is obvious that these methods were useful in many cases as follows.
1. By DRS methods, we can obtain the depth profile of clay minerals more rapidly and simply than XRD.
2. For acidizing operations, we can provide the typical elemental composition of target reservoir by EDX-FP methods.
3. By the combination of these methods, we can estimated the elements in each minerals.
It is expected to obtain more chemical information of oil reservoir rocks by statistical methods.