In this article was studied clayiness of key bed of Aleksinskie depositsof Severo-Limanskaya region. It was executed 14 analyses of big collection of mineral aggregateusing X-ray analysis. It was received quantity relations clayiness and silty parts in key clayiness beds. It was calculated qualified significances of hydrogen index for examined key bed, using known valuesof hydrogen content of basic clayiness minerals.
In this article we had proved criteria of definition of productive collector’s effective thicknesses, porosity, shaliness and petrosaturation. We had revealed their features of vertical and lateral distribution.
