Water injection front estimation of oil fields to reduce risks of sharp water flooding

At the fields of Rosneft Oil and Gas Company, effective technologies are used to increase oil production and oil recovery ratio. To this end, systematic work is carried out to extract hard-to-recover oil reserves. Side boreholes (BS) cutting, which helps to increase oil recovery and actually replaces well compaction. Piezometric and unprofitable wells, as well as wells with leaking production strings, are identified when selecting candidate wells for planning BS and horizontal wells (HW). Maps of residual oil-saturated thicknesses are also considered, according to which localization zones of oil reserves not involved in the development are determined, in order to select areas for drilling. For rational selection of measures, forecasting of drilling results should be carried out using a hydrodynamic model and full seismic studies. First of all, the proximity of the water injection front from the existing injection pool of wells is determined in order to avoid the risks of sharp watering.