Research of hydrophobic compositions` influence on mechanical strength of polymineral sandstone core samples

摘要

In the given article problems of influence of saturation fluid type on mechanical strength of Priobskoe oil field core samples are examined. Common characteristics of the deposit are given and reasons of wide application of fracturing treatment are explained. Some factors that influence on permeability and porosity of reservoir are shown. In particular results of studying of rock pressure influence on reservoir properties is given. Moreover in the article results of monoaxial compression experiments of core samples that were saturated by fresh and mineralized water, hydrocarbons and water solutions of water-repellent NG-1 are shown. It was revealed that these solutions lower the mechanical strength of samples and reasons of such results are explained.