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Profile Control Using Fly Ash Three-Phase Foam Assisted by Microspheres with an Adhesive Coating
Foam-assisted steam flooding is a promising technique to alleviate gas channeling and enhance sweep efficiency in heterogeneous heavy-oil reservoirs. However, long-term foam stabilization remains problematic at high temperatures. Three-phase foam (TPF), containing dispersed solid particles, has been proposed to improve foam stability under harsh reservoir conditions. We fabricated a novel TPF system by adding ultrafine fly ash particles, as well as high-temperature resistant microspheres withdoi:10.3390/app11083616 fatcat:bcnzvhkspzhxtbukduyfjlmdyq