Title: Analysis on Characteristics of Clay Minerals of Ultra-Low Permeability Sandstone Reservoir and Potential Damage to Reservoir
Abstract: By X-ray diffraction analysis, scanning electron microscopy and other research methods, this paper detailedly analysizes types and micro-characteristics of clay minerals in the Ordos Basin, Chang 8 formation of Xifeng Oilfield. Studies suggest that clay minerals mainly include petal-like and pompon chlorite, bridge-like and curved sheet illite, page-like kaolinite. The content of illite / smectite interstratified minerals is less. Different kinds of clay minerals can lead to different kinds of reservoir damage. The chlorite mainly causes acid sensitivity. The illite and kaolinite are the main source of speed-sensitivity damage. The illite / smectite interstratified minerals could easily lead to water-sensitivity damage. Through the above studies, this paper can provide foundation of geological basis for rational development.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 4
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