Patent ID: 6105670
Filing Date: 2000-08-22
Classification: E21B

Abstract:
A downhole tool comprising:an inner tube having a bore with a known cross sectional area and being connectable at each end to a tubing string;an outer tube having an outer surface and being disposed about and spaced from the inner tube;an annulus between the inner tube and the outer tube;upper and lower openings providing access from the outer surface of the outer tube into the annulus;an upper well sealing means disposed on the outer tube below the upper opening for providing an annular seal about the outer tube;a lower well sealing means disposed on the outer tube above the lower opening for providing an annular seal about the outer tube;at least one transverse port positioned on the tool between the upper well sealing means and the lower well sealing means, the at least one transverse port extending to provide access between the bore of the inner tube and the outer surface of the outer tube without opening into the annulus; and,the tool defining a waste liquid conduit having a minimum cross sectional area and the at least one transverse port having a combined minimum cross sectional area equal to or greater than the waste liquid conduit minimum cross sectional area of the tool.