FIELD: measuring.
SUBSTANCE: invention relates to strength studies of rock samples and can be used for investigation of effect of drilling fluids on strength properties of mudstone samples containing formation fluid or its model in volume of cavities. Method of obtaining argillite samples consists in that air-dry samples of argillite with size of 50×50×50 mm is placed in paper containers, placed in a drying oven and moistened with formation fluid or its model under vacuum of not less than 60 kPa for at least a day. After that, they are compacted on a triaxial compression plant until achieving an elastic-ductile deformation stage.
EFFECT: obtaining argillite samples saturated with formation fluid, with preservation of fracturing.
4 cl, 1 dwg, 1 tbl
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