The process of oil recovery needs a wide knowledge of engineering and chemistry. From drilling to completion, the different stages of recovery (EOR) use various materials and additives to improve the reservoir’s productivity. Many additives are gelling polymers that increase viscosity and elasticity and help to prevent typical issues such as bore well collapse, cut-off sedimentation, loss of circulation, etc. The plugging performance of such systems is also of utmost interest and depends on the gelation kinetics. However, each reservoir shows its characteristic properties in terms of formation type, porosity, temperature, and salinity, making it challenging to find the right system for the right reservoir.
Temperature conditions may go up to 150°C and higher. Thus, additives must be adapted for each site. Moreover, conditions can change during exploitation, e.g. porosity or temperature, and reactivity is needed to adjust the used materials.
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