Geochemical analysis of formation water as a tool for better understanding of water flooding

Abstract In oil production, a reservoir flooding system is often used. This necessary to compensate for production in the and maintain pressure. But water cutting of wells constantly increasing, that makes exploitation less profitable, future this leads shutdown wells. The source supply well not always clear, presence flooded below overlying reservoirs from which was previously carried out, possible number routes increases. first aim work identify channels with high permeability by using tracer test, second characterize geochemical state as whole, finally choose optimal sidetrack point modelling. represents terrigenous deposits an independent Bobrikovian horizon incision channel carbonate massif. these zones expected be different. Therefore, order achieve aims, following studies were conducted: 1) Tracer test. A blindly follows fluid phase it injected. tests are most used obtain information on direction velocity flow brines, hydraulic conductivity, effective porosity, transport parameters (e.g., dispersivity values), preferential paths. For this, we spectrofluorimeter. 2) Geochemical composition all site. unified Oil Water Contact (OWC) indicates possibility their hydrodynamic communication. To confirm hypothesis, areal isotopic waters out; 3) Using previous methods, conducted Field Development Analysis (FDA) modeled position horizontal wellbore special software. One showed better results compared other, located zone large reserves length 1.3 times longer. As result studies, three identified based water: southwest - horizon, central part transition zone, northeast Tournaisian waters. Zones current have been determined 3D modeling. further involvement volumes development, sidetracking proposed.