-Multivariate statistical analyses of geochemical, mineralogical, and cation-exchange capacity (CEC) data from a Venezuelan oil well were used to construct a model which relates elemental concentrations to mineral abundances. An r-mode factor analysis showed that most of the variance could be accounted for by four independent factors and that these factors were related to individual mineral com...

Abstract The complete characteristics knowledge of clay minerals is necessary in the evaluation studies hydrocarbon reservoirs. Ten samples taken from two wells a heterogeneous clastic gas reservoir formation NE Iran were selected to conduct transmission Fourier transform infrared spectroscopy (FTIR) tests for mineralogy studies. FTIR analysis showed that there clear signs all samples. wavenumb...

Clay from deposit Bilalovac, Central Bosnia, was characterized by chemical, IR, XRD and DTA/TG analysis. The major mineral components are kaolinite, illite, muscovite and quartz. Raw clay may be used for pottery products and terracotta. Clay was beneficiated by wet method removing fraction over 20 μm. Beneficiation process increased content of kaolinite and decreased content of quartz. Benefici...

The major element composition, including two kinds of clay minerals and moisture content of sound-producing sand are reported for the first time. Sand from 33 beaches in Japan has been found to make sound. Ten sound-producing beaches were selected to compare with silent beach sand. Both sound-producing sand and silent beach sand are mostly composed of quartz and feldspar. The range of SiO2 cont...

Injecting water into a coal seam to enhance the cohesive strength of coal and thus minimize and reduce the coal wall spalling risk must be considered in underground coal mining systems. In general, coal with low cohesive strength contains clay minerals which may affect the stability of coal by interacting with water. Therefore, the coupled effects of moisture content and inherent clay minerals ...

The Mesozoic Chang 8 Section in the Zhenjing area is a typical low permeability-tight sand reservoir and regarded as most important set of paybeds study area. Guided by principles basic geological theory, diagenetic evolution process hydrocarbon accumulation periods were determined through various techniques. More specifically, core observation, scanning electron microscopy (SEM), X-ray diffrac...