Displacement experiments using the porous plate method were conducted on water-wet sandstones to measure the capillary trapping of oil by waterflooding as a function of its saturation after primary drainage. Three sandstone samples ranging in porosity from 12.2% to 22.1% were considered. Experiments on two samples were conducted at an elevated temperature and back-pressure of 343K and 9MPa resp...

Contact angle is a principal control of the flow of multiple fluid phases through porous media; however its measurement on other than flat surfaces remains a challenge. A new method is presented for the measurement of the contact angle between immiscible fluids at the pore scale at reservoir conditions (10 MPa and 50 C) inside a quarry limestone through the use of X-ray microtomography. It is a...

The relations among the resistivity, elastic-wave velocity, porosity, and permeability in Fontainebleau sandstone samples from the Ile de France region, around Paris, France were experimentally revisited. These samples followed a permeability-porosity relation given by Kozeny-Carman’s equation. For the resistivity measurements, the samples were partially saturated with brine. Archie’s equation ...

High-resolution X-ray imaging combined with a steady-state flow experiment is used to demonstrate how pore-scale displacement affects macroscopic properties in an altered-wettability microporous carbonate, where porosity and fluid saturation can be directly obtained from the grey-scale micro-CT images. The resolvable macro pores are largely oil-wet average thermodynamic contact angle of 120°. p...

Pore-scale X-ray imaging combined with a steady-state flow experiment was used to study the displacement processes during waterflooding in an altered-wettability carbonate, Ketton limestone, more than two orders of magnitude difference pore size between macropores and microporosity. We simultaneously characterized macroscopic local multiphase parameters, including relative permeability, capilla...

Abstract The phase of CO 2 present in a saline reservoir influences the change pore geometry properties rocks and consequently transport storage integrity reservoir. In this study, digital rock physics was used to evaluate saturated with different phaseCO -brine under conditions. changes due -brine-rock interaction were quantified. addition compression, caused further reduction porosity by prec...