... парафинистой нефти. The reserves deterioration of hydrocarbons on the Udmurtiya fields, which is characterized by abnormal geological conditions, high-viscosity and paraffin-base oil, caused the low efficiency of traditional methods of bottom-hole formation zone treatment. The using of hydrochloric acid treatments usually causes a number of well problems that leads to the production rate decrease. We suggest using improved acidic compositions, containing multifunctional reagents-modifiers ...

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