| Foam has been widely used in the petroleum industry. The use foam as a drilling fluid takes advantages of the foam's physical properties. Foam decays into liquid after a certain time. The decay process happens faster at an elevated temperature. The research on foam thermal stability has not been thorough. This paper presents experimental research about the stability of foam from three polymers with viscosity of 10cp, 20cp, and 30cp. The stabilities of foam were tested at an elevated temperature. The most thermal stable foam among the foams provided was determined. There are some unclear behaviors that need to be studied in future work. |
