Apparatus and method for recirculating mud when drilling under a

Details Apparatus and method for recirculating mud when drilling under a Apparatus and method for recirculating mud when drilling under a

1991-09-16

1993-01-05

Novosad, Stephen J.

Boring or penetrating the earth

Processes

Boring with specific fluid

175 61, 175206, 175217, 175406, 285272, 405184, E21B 728, E21B 1026, E21B 2106, F16L 2708

Patent

active

051762110

ABSTRACT:
New apparatii and processes are disclosed to create fluid continuity between opposite ends of a route drilled or bored under and/or around an obstacle. This invention allows fluids to be pumped through a reamer and a hollow swivel from either or both sides of the obstacle. It also allows the direct transfer of fluids from one side to the other through the connecting conduit located in the annular space produced during drilling and reaming operations.

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