title: NMR T2 distributions and two phase flow simulations from x-ray micro-tomography images of sandstones.
abstract: The distribution of fluids in the pore space of a series of sandstones is calculated as a function of capillary pressure using a two phase flow simulation model. The pore space is represented by a system of channels and nodes which are derived from x-ray micro-tomography images of sandstones. The sandstones studied varied in permeability from approximately 40 to 3,000 mD. The simulation results illustrate the significance of the pore level by-pass phenomena in controlling the location of fluids within the pore structure. The implications of these results on the interpretation of NMR T(2) distributions to determine the irreducible water saturation are discussed.
authors.affiliation: Corporate Strategic Research, ExxonMobil Research and Engineering Company, Annandale, NJ 08801, USA.
authors.forename: D
authors.initials: D
authors.lastname: Lu
authors.forename: M
authors.initials: M
authors.lastname: Zhou
authors.forename: J H
authors.initials: JH
authors.lastname: Dunsmuir
authors.forename: H
authors.initials: H
authors.lastname: Thomann
mesh_terms: D003198:Computer Simulation; D004058:Diffusion; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D009821:Oils; D012212:Rheology; D012822:Silicon Dioxide / Q000737:chemistry*; D014056:Tomography, X-Ray / Q000379:methods*; D014867:Water
chemical_list: D009821:Oils; D014867:Water; D012822:Silicon Dioxide