Importance

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Abstract

Apparatus for testing a selected zone of a subterranean bore, which may comprise a subterranean uncased well bore, comprises a pair of inflatable packers mounted in spaced relationship on a tubular outer housing to define the axial extent of the selected zone to be tested. Fluid pressure passages for inflating the packers, for monitoring the fluid pressure between the inflated packers, and above and below the inflated packers, are defined by a plurality of peripherally spaced passages formed in a multi-section tubular conduit. The fluid passages in each conduit section do not extend axially beyond the ends of the particular section but communicate with peripherally spaced radial ports. These ports in turn communicate with similar peripherally spaced, radial ports provided in the next adjacent conduit section so that the flow of fluid through the various passages is axially through the length of the section, radially outwardly into the end of the next section, and radially inwardly into the end of the next subsequent section. The disposition of the forementioned fluid passages in the walls of the conduit section permits the central bore of the conduit to be employed to mount transducers for respectively converting fluid pressure signals into electrical signals.

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First Claim