Method and apparatus for cementing a production conduit within a

Details Method and apparatus for cementing a production conduit within a Method and apparatus for cementing a production conduit within a

1987-05-13

1988-11-22

Suchfield, George A.

Wells

Processes

Cementing, plugging or consolidating

175 53, 175 61, 175 67, 175325, E21B 704, E21B 708, E21B 3314

Patent

active

047858850

ABSTRACT:
An apparatus and method for drilling a bore hole (B) along an underground arcuate path (P) between two surface locations (O,E). The bore hole (B) is drilled in one direction with a drill string (10) having a leading pipe section 12 with a drill bit (14) thereon. Drilling fluid is supplied to the drill bit (14) during the drilling operation. Upon completion of the initial bore hole (B), the hole (B) may be enlarged by a reamer (40). Then, a production conduit (38) is connected to the reamer (40) for being pulled by the drill string (10) through the enlarged bore hole (D). Cement is supplied through the drill string (10) for discharge at the reamer (40) into the bore hole (D) adjacent the leading end of the production conduit (38) and fills the annulus A between the conduit (38) and the inner peripheral surface of the enlarged bore hole (D). In one embodiment (FIG. 12), the drill string (10B) is encased in cement in the initial bore hole (B) and forms a casing for receiving a small diameter production cable.

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Pp. 2408, 2409, 2425, 2442 of 1986-1987, Composite Catalog of Oil Field Eqpt & Services

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