ISSN 1608-5078 (Online)
. Revelation of the Initial Stages of the Producing Reservoirs Watering by Secondary Mica Restructuring
J.S. Rakmatulina, G.A. Krinari
Development of the main reason countering of the filtering industrial fall in the terrigenious rocks, which has mineralogic and physical-chemical nature, requires consideration of the structure transformation dynamics in the illite-smectite system. Well-known analysis methods of the mixed-layer phases on the basis of fitting procedure are not completely correct for such objects. The alternative approach is proposed, based on the analysis of pictures obtained by spectrum subtracting, registered after saturation of species with ethylene glycol, from the dry object spectrum. The computer calculated such spectra in the all range of concentration of the illite and smectite components at different type of structure orderliness - factor of the R short-range order. It has been established that at the initial stage of transformation a phase with one H2O net between layers and R=3 short-range order appears, which is interpreted as an intrusion of water on blocks boundaries. In the flooded collectors several ellite-smectite phases with various probability parameters of structures are present. Selection criteria of theoretical spectra the closest to the experimental ones are found.
oil recovery, mica, ellite-smectite phases, diffractometry
Rakmatulina J.S., Krinari G.A. Revelation of the Initial Stages of the Producing Reservoirs Watering by Secondary Mica Restructuring. Georesursy [Georesources]. No. 2(44). 2012. Pp. 35-39.