Abstract: A method and apparatus for obtaining data for simultaneously measuring relative permeability (k.sub.r), static capillary pressure, dynamic capillary pressure (P.sub.c), and electrical resistivity (R.sub.t) of a core sample taken from a subterranean reservoir under simulated reservoir temperature and pressure. A core sample having a a simulated original water and oil saturation is waterflooded while (1) pressures at spaced points along the core are measured to determine k.sub.r, (2) capillary pressures of the oil and water are measured to determine P.sub.c ; and (3) R.sub.t is measured between points spaced on the core. At the same time, the core is scanned by microwaves to determine the water saturation existing in the core at the time a particular measurement is made.

Abstract: A method for treating a formation having zones of varying permeabilities to improve the sweep efficiency of a drive fluid through the formation. At least one radial, relative horizontal bore is formed from a relative vertical wellbore and extends outward into a high-permeability zone of said formation. A gelant is injected into said formation through the radial bore(s) and flows into the higher-permeability zones of the formation. After the gelant is in place, the wellbore is shut-in to allow the gelant to set to form a flow-blocking gel in the treated zones of formation. Secondary recovery operations are then resumed and the drive fluid (e.g. water) will now flow through the previously unswept (i.e. less-permeable zones) of the formation.