As a result of research in the 1950s and 1960s, carbon dioxide (CO2) flooding has been
implemented at the pilot and project stage in the petroleum industry since the early 1970s. A …

A comprehensive series of three-dimensional x-ray computed tomography (XCT) imaging
experiments was conducted to quantitatively assess the multiphase particle-and pore-scale …

The present paper describes the first field application of a new water shutoff technology
using size-controlled microgels for the treatment of a gas storage well. The treatment was …

This paper provides guidance on when and where relativepermeability-modification/
disproportionate-permeability-reduction (RPM/DPR) water-shutoff (WSO) treatments can be …

It is well established that treatment of porous rocks with gelled polymer systems can cause
the permeability of water at residual oil saturation to be reduced by one to three orders of …

This paper describes the mechanism for disproportionate permeability reduction (DPR).
Recent papers have discussed possible DPR mechanisms. Most of the papers conclude that …

Existing conventional measurements face challenges in characterizing transport properties
of a shale because they are designed originally for formations with relatively wide pores and …

Many pilot tests and several commercial field projects have been performed over the past
few decades and have shown that surfactant/polymer and alkaline/surfactant/polymer floods …

Water production from oil and gas reservoirs is increasing world-wide, as more reservoirs
are becoming mature. In order to control water production, polymers or gels are injected into …

Several disproportionate permeability reduction (DPR) mechanisms have been proposed in
the literature for water shutoff treatment using polymer relative permeability modifiers (RPM) …