.~ Contains intended gaseous phase at entry into wellbore
DEFINITION
Classification: 507/202
Contains intended gaseous phase at entry into wellbore:
(under subclass 200) Compositions which have an intentional gaseous phase present as they are initially placed in the wellbore.
(1) Note. Well treating fluids comprising the unintended presence of a gas, especially when such presence is avoided, are classified according to the other composition components.
(2) Note. A claimed well treating composition with the intended creation of a gas inside the wellbore by in situ reaction is classified according to the components present at entry into the wellbore.
(3) Note. A well treating composition described as being saturated with a gas is not a sufficient indication of a discrete gaseous phase being present. Compositions saturated with a gas are placed elsewhere in this schedule based on the other composition components.
SEE OR SEARCH CLASS
166, Wells,
270, and 270.2 for injecting gaseous gel and surfactant; subclass 300 for well processes including the creation of a gas inside the wellbore by in situ reaction; and subclasses 401+ for injecting a gas or gas mixture.
