Abstract: The present invention utilizes a gravity influenced liquid distribution within a substantially horizontal header which receives a liquid-vapor mixture in annular flow from a supply line and divides that single stream into multiple streams, each flowing through a branchline to deliver substantially uniform quality liquid-vapor mixture to a nearby site. The header is substantially horizontal and each branchline is connected to the periphery of the header further downstream and relatively lower on the periphery of the header than the preceding branchline.

Abstract: A method of reducing the permeability of an area of a subterranean formation is disclosed. An alkali metal silicate foam is produced by injecting into the formation a solution of alkali metal silicate and a chemical surfactant, and a non-condensible gas. The foam hardens into a substantially impermeable solid. The foam may be used to reduce permeability in areas of the formation which have been steam swept during steam stimulation cycles. Thus, subsequent steam stimulation cycles will be directed to uncontacted areas of the formation.

Abstract: A method and apparatus for diverting a portion of a two-phase fluid from a trunk pipeline, having a known flow profile, into a branch pipeline while maintaining substantially equal quality in both pipelines. Openings are placed in the trunk pipeline wall such that fluid samples which approximate the flow profile are withdrawn through the openings. The withdrawn fluid is collected in an enclosed chamber and transported through the branch pipeline.