Why is it difficult to predict polymer injectivity ?

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Difficulty to predict injectivity in polymer floods Difficulty to predict injectivity in polymer floods. đź“„ Analyzing the 2019 Paper: “Why is it Challenging to Predict Polymer Injectivity During Chemical EOR Processes?” Difficulty to predict injectivity in polymer floods. Injectivity remains one of the most debated topics in polymer flooding, often misunderstood or oversimplified in simulations. […]

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Polymer flooding: Current status and future directions

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21/02/2023 Polymer Flooding Current Status and Future Directions: A great paper – straight to the point! Seright & Wang, 2023. Abstract: “This review presents our perspective on the factors that have brought polymer flooding to its current state. Insights are provided on why HPAM is the dominant polymer used as well as what is needed

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The benefits of ATBS on retention

Leave a Comment / Food for thoughts /

Polymer retention is one of the most critical parameters for the success of a polymer flooding project. A high retention means a poor propagation and therefore a delay in the oil bank production but also a much lower viscosity at the front, creating instability.

For instance, @1000ppm and with a retention of 50 µg/g in a sandstone, that’s already a 40% delay factor in % of pore volume. At 3$/kg of polymer in a 40 acres/20ft thick zone, it’s a bit more than 1,2 million USD to satisfy retention… (you can do your own spreadsheet using the SPE166265 for instance)

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Pressure drop & corefloods

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The first time I was confronted to the way polymer flooding was modeled, I was struck by the number of parameters needed and the complexity of the whole thing. It feels like everyone wanted to be sure to capture absolutely everything: from the molecular interactions to the rheological behavior. The first image that came to my mind was a DJ mixing table: a lot of buttons and no idea which to touch to obtain the desired music without the help of an “expert”.

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Prediction & forecasting

Leave a Comment / Food for thoughts, General /

Sometimes you run into something that you wish you had discovered a bit earlier in your journey, something that could have helped you avoid doing stupid things or, let’s say, optimize your life. For me, the latest examples were Kahneman’s “Thinking fast, Thinking Slow” and Taleb’s “ Black Swan” which I discovered a few years ago…

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