Equations and a procedure have been developed to calculate the excess stress induced on a proppant dune that is deposited by a waterfrac with poor proppant transport characteristics. This method also calculates the dimensions of an arch region that forms above the bed. Stresses on the proppant at the top of such a dune are much greater than usually considered because of the need to support a wide proppant bed and the arch, suggesting that crushing and embedment are likely. The arch region itself is an extremely high conductivity pathway that may provide overall benefit in terms of clean-up and production, but may also aid sand production.

You can access this article if you purchase or spend a download.