Apparatus and method for transferring a bingham solid...

Details Apparatus and method for transferring a bingham solid... Apparatus and method for transferring a bingham solid...

E - Fixed Constructions

21

B

166/23

E21B 43/26 (2006.01)

Patent

CA 1218014

TITLE Apparatus and Method for Transferring a Bingham Solid through a Long Conduit Abstract Of The Disclosure An apparatus for injecting a lubricating liquid, e.g., water, into a conduit as an annular layer around a flowing Bingham solid, e.g., a water gel or water-in-oil emulsion explosive, to facilitate the flow of the Bingham solid has an annular passageway from which the lubricating liquid flows into a cylindrical chamber containing the flowing Bingham solid. The annular passageway has a constricted throat portion of adjustable width, which, along with the flow rates of the Bingham solid and the lubricating liquid, is adjusted to produce a thin film of lubricant which allows lubricated plug flow of the Bingham solid in a descending section of conduit under the propelling force of gravity alone. Low drag permits the delivery of Bingham solid explosives into very deep vertical holes with no increase in the required pumping pressure.

454085

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