In case of the weakly consolidated formations the oil production is often accompanied by the sand production and the pouring of the horizontal part of the well, which leads to the drop in the productivity coefficient during the operation of wells. One of the methods for preventing the sand production is the treatment of borehole rocks with chemical reagents. However, the methods of calculating the volume of injection of the reagent into the bottom-hole zone of the formation used by technology suppliers are part of commercial information and do not allow comparing the effectiveness of different formulations. In this regard, a method was developed for calculating the volume of injection of chemical reagents. This methodology is based on a mathematical model of reservoir operation using the results of physico-chemical properties of the reagent, filtration and geomechanical studies of cores before and after exposure to the reagent. Calculations according to the proposed model require data obtained from lab experiments. During lab experiments it is required to measure physical and chemical characteristics of consolidation liquid, evaluate porosity and permeability of the core, as well as the strength characteristics, before and after treatment of the core with the consolidation liquid. Later, acquired data is used as an input in the developed mathematical model. The model can be used to evaluate the amount of sand produced depending on the volume of the consolidation liquid. By varying the volume of the consolidation liquid in the model, the optimal volume of the liquid can be estimated. The optimal volume should be chosen depending on the two factors: the increase of the volume of consolidation liquid causes decrease in fluid production, as well as in sand production. Is some cases it is possible to achieve a significant decrease in sand production, while a very small decrease in fluid production is observed.
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