Patent ID: 7354886

Claim:
A method for releasing an agent at a remote location in a conduit comprising: forming pumpable multiple phase vesicles for carrying an agent comprising: a first phase; a third phase; and a surface active material bilayer second phase separating the first phase from the third phase, where the surface active material bilayer is selected from the group consisting of phospholipids, alkyl polyglycosides, gemini surfactants, sorbitan monooleate, sorbitan trioleate, glycerol fatty acid esters including mono- and/or dioleates, polyglycerol fatty acid esters, polyglycols, alkanolamines and alkanolamides such as ethoxylated amines, ethoxylated amides, ethoxylated alkanolamides, including non-ethoxylated ethanolamides and diethanolamides, and mixtures thereof, capable of forming a bilayer; where the agent is identical with or present in a phase selected from the group consisting of the first phase, the third phase, and both phases; injecting the pumpable multiple phase vesicles into a fluid, thereby dispersing the pumpable multiple phase vesicles in the fluid to create a pumpable multiple phase composition; transporting the pumpable multiple phase composition in a conduit; and releasing the agent from the multiple phase vesicles at a location remote from the injecting.