Predicting the Effectiveness of Hydrochloric Acid Treatment in an Oil Field Using the Calculation of Changes in the Skin Factor and Hydrodynamic Modeling

The article provides an effectiveness assessment of the designed hydrochloric acid treatment at one of the wells of the Western field (Perm Krai). Efficiency was predicted with hydrodynamic modeling of measures to intensify the influx of oil based on a preliminary calculation of the change in the skin factor. Daccord and Lenormand’s experiments were used as the basis for improving the state of the bottomhole zone. These studies allow us to calculate the decrease in filtration resistance in the near-wellbore zone of the considered well formation. The calculation took into account key factors that affect the effectiveness of hydrochloric acid treatment. Using a hydrodynamic simulator, the procedure to stimulate oil production in the studied field is designed. Based on simulation calculations, an analysis of additional oil production was carried out in comparison with the base case for 10 years of operation of this development object. The methodology used in this work will allow oil companies to more reasonably approach the design of hydrochloric acid treatments, and also take into account key factors to find optimal solutions in order to maximize the effectiveness of measures.