Paper Companions

Interactive companions to D. S. Fulford's technical papers. Each page recomputes the paper's curves in the browser and works offline.

• Multiphase Flowing Material Balance - Bayesian Pore Volume EstimationMultiphase flowing material balance with a Bayesian latent slope: the density plot, the pore-volume trajectory, β*, rates, ratios and saturations for three simulated wells, the KITE field well and your own data, computed in the browser by the bayesian-derivative WebAssembly engine.
• Transient Hyperbolic Model (SPE-167242)Fulford and Blasingame 2013: the THM, its segment forms, the analytic solution from reservoir properties, the numerical cases, MFHW heterogeneity, a fit to your own data, and a radial THM with the Fetkovich type curve.
• Bayesian Derivatives & Optimization (SPE-201404)The Bayesian pressure and rate derivative: the latent log-log slope with its posterior bands, the regularisation path and NUTS for the paper's pressure, rate and qDb cases and your own data, checked against the PyMC 6 posteriors, computed in the browser by the bayesian-derivative WebAssembly engine.