A basic search for geologists and engineers is to understand the flow potential from a reservoir. Though factors, such as reservoir pressure, net pay, reservoir heterogeneities and propped fracture lengths influence the well's productivity after completion, in-situ reservoir permeability dictates the relative magnitude of the production response. As such, in-situ permeability is a key variable for the economics of the well and future development opportunities. A method is presented that evaluates the pressure falloff response of fracture treatment pump-in tests for determining, on a relative basis, the reservoir permeability. A direct correlation is then made between the pump-in derived permeability value and the subsequent production response.
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