Abstract
The characteristics of hole and seepage of carbonate rocks depend on the structural components of carbonate rocks and the combination relationship with these structural components under multi-scale. The quality of filling in reservoir fracture is an important part of fracture description. In this paper, the method of microscopic infrared spectral imaging was used, and the spectra cubic database was established by means of spectral imaging experiment. Each single band image which characterizes the related substances was extracted and the microcosmic characters of the filling in carbonate reservoirs fracture from Wumishan formation in Renqiu oilfield were studied. The spatial distribution maps of different chemical composition and groups in the core sample were obtained. The distribution of different hydrocarbon in the fracture of the reservoir and the connectivity of the pores etc. were better revealed
Highlights
In the process of oil and gas exploration and development, fracture-cavity filling and connectivity in fracture-cavity carbonate reservoir is an important research topic [1,2,3]
The classic techniques commonly used are optical microscopy and X-ray diffraction, and often supplemented by scanning or transmission electron microscope. These detection methods have some achievements in the research of micro morphology, the common deficiency is that they can not distinguish the homogeneous or determination of partially ordered degree and other phase information, mainly because they stress on the spatial morphology analysis and lack of energy spectrum analysis [3]
In the research of fracture fillings, the experimental method named imaging spectroscopy technology is urgently needed, which has the ability of spatial resolution and spectral resolution
Summary
In the process of oil and gas exploration and development, fracture-cavity filling and connectivity in fracture-cavity carbonate reservoir is an important research topic [1,2,3]. In the research of fracture fillings, the experimental method named imaging spectroscopy technology is urgently needed, which has the ability of spatial resolution and spectral resolution.
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