The Characteristics Evaluation of CO2-foam System

Abstract

This paper researches on the characteristics of the foam system chosen for CO 2 foam flooding in the low permeable oil fields. In view of the actual situation of the oilfield high temperature, high salinity and water injection difficulty, the selected agents must also meet the requirements of stability and foaming property. Through the specific half-life and foam volume under different temperature conditions, found: FP388, FP246 and FP275 three kinds of foaming agent have good foaming properties; the half-life of bubble down quickly as the temperature from 45 °C to 100 °C; the half-life of FP275 is the largest of the three when they at the same temperature; The difference of FP388 and FP275 stability decreases with temperature increasing; all of the three kinds of foam system can meet the needs of the refinery, and the property of the foam system of FP388 is the best among them through the comprehensive consideration.

Stability of Heat Transfer Nanofluids – A Review

“…To obtain quality nanofluids, the stirring speed needs to be controlled as high-speed stirring may cause bubble formation and those bubbles stick to the wall of beaker during shifting and affect the mass fraction during experimentation. For example, Lui et al [199] prepared water-based Al 2 O 3 and CuO nanofluids by two-step method while reducing the stirring speed from1200 rpm to 800 rmp to avoid bubble formation in those test fluids. Kusure et al [200] prepared Al 2 O 3 -water and CuO-water nanofluids by magnetic stirring followed by ultrasonic vibration with the addition of SDS (sodium dodecyl sulphate).…”