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 …

Polymer gel systems have been widely applied to control excessive water and improve oil
recovery (IOR) in petroleum reservoirs. They are usually divided into two main types, in-situ …

In steady gas–liquid flow in homogeneous porous media with surfactant present, there is
often observed a critical injection velocity or pressure gradient∇ pmin at which “weak” or …

Pore-scale elastic microspheres were prepared controllably and their swelling property,
stability, and creep-recovery property in brine water were analyzed in laboratory. The goal of …

Numerous chemical options are available for addressing excessive water and gas
production problems. The chemistry of most of these options is complicated. A petroleum …

A capacity to reduce water permeability much more than oil permeability is critical to the
success of gel treatments in production wells if zones cannot be isolated during gel …

Micron-size polyacrylamide elastic microsphere (MPEM) is a newly developed profile control
and oil displacement agent for enhanced oil recovery in heterogeneous reservoirs. In this …

Straightforward applications of fractional-flow theory and material-balance calculations
demonstrate that, if zones are not isolated during gel placement in production wells, gelant …

IFP water shutoff technology is based on the use of relative permeability modifiers (RPM's).
The technique consists of bullhead injection of polymer solutions into existing completions …

A number of wax models currently in use by the oil industry are based on parameters that
were empirically determined to match available data for black oils. These data are often not …