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PETROMAKS2-Stort program petroleum

Stimulated Production: Steady and Non-Steady State Two-Phase Flow

Tildelt: kr 8,5 mill.

One of the most important goals in the recovery of hydrocarbons is to find methods which make it possible to recover the last 20 to 60% of the oil after the production well is declared not profitable. There are many reasons why a large percentage of the oil is left also after the use of different techniques for stimulated production. One of the problems with gas or water injection are instabilities between the injected fluid and the oil both for fast (v iscous fingering) and slow displacement (capillary fingering). These instabilities lead to pockets or clusters of oil trapped in the porous medium. The problem area of enhanced oil recovery is cross-disciplinary at heart (as is our work on the problem). Different aspects of the fluid displacement problem has been addressed by physicists, geologists and chemists for decades. Aspects of stimulated production by gas or water injection will be studied experimentally and by nu merical modeling and theory . We will in this work focus on two problems which are not well understood and are of central importance to understand water and gas injection under stimulated production: 1) Two phase flow at finite vis cosity contrast. 2) Steady state flow under simultaneous injection of two fluids in a porous medium.

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PETROMAKS2-Stort program petroleum