The issues of stimulating the inflow from carbonate reservoirs, as well as increasing the oil recovery factor are among the most relevant. With classical multiple acid treatments, hydrochloric acid penetrates into the same high-permeability intervals of the bottomhole formation zone (BHZ), and the coverage of the formation by impact decreases. Thus, one of the most important tasks of oil production is to increase the efficiency of acidizing wells. The problem becomes most urgent due to the fact that at present most of the large fields in Russia are at a late stage of development, the work of the deposit is carried out at reduced reservoir pressures, and the reservoir itself is heterogeneous. The article deals with the use of foam-acid treatment of the formation to increase oil production at the fields of the Volga-Ural region.
Materials and methods
Based on the analysis of practical material, the testing of the method of foam acid exposure in the conditions of developed fields in the territory of the Udmurt Republic.
acid treatment, foam acid, acid deviation, increased efficiency of repeated BHT, carbonate reservoir