John SpiveyJohn Spivey, as owner Phoenix Reservoir Software, LLC, develops reservoir engineering applications for low permeability gas and unconventional gas reservoirs. As owner of Phoenix Reservoir Engineering he consults, specializing in low-permeability gas production data analysis, and pressure transient test interpretation. From 1997-2004 he served as senior reservoir engineer for Schlumberger. Prior to that from 1990-1997 he worked for S.A. Holditch & Associates. He is co-author on Applied Well Test Interpretation. Read More Read Less