The experience of two successful pilot projects at the East-Messoyakhskoye field made it possible to systematize the information and develop unified system – guidelines for design and implementation of polymer flooding pilot project. The developed system is implemented in the form of practical engineering guidelines for the application of polymer flooding technology in poorly consolidated reservoirs of viscous oil reservoirs. The system consists of step-by-step algorithm for planning, efficiency estimation and implementation of polymer flooding pilot project; activity matrix; and checklist. The main stages of planning, efficiency evaluation and implementation of polymer flooding pilot are identified; their sequential passage is systematized in the form of an algorithm consisting of 7 steps from preliminary EOR screening to analysis of pilot results. The matrix of activities covers key research areas in design and implementation of pilot project: analogues, polymer selection, polymer solution rheology, polymer retention, simulation, technological parameters of injection, monitoring and control of polymer flooding process, engineering solutions for the preparation and injection of polymer solution, a comprehensive assessment of the economic efficiency of the project. The matrix allows to assess the level of effort and cost required at each stage of the project. A detailed checklist has been developed to monitor the implementation of measures and make a decision on the transition to the next stage. The implementation of the guidelines will make it possible to increase efficiency and reduce the timing of design and implementation of pilot polymer flooding projects.
References
1. Ilyasov I., Gudz A., Podkortyov A. et al., Results of the first polymer flooding pilot at East-Messoyakhskoe oil field (In Russ.), SPE-201822-MS, 2020, https://doi.org/10.2118/201822-MS.
2. Ilyasov I., Glushchenko N., Results of the second polymer flooding pilot at East-Messoyakhskoe oil field and future plans, Conference Proceedings, IOR 2021, April 2021, V. 2021, pp. 1–10, https: //doi.org/10.3997/2214-4609.202133019.
