Combination gravel packing/frac apparatus for use in a subterran

Details Combination gravel packing/frac apparatus for use in a subterran Combination gravel packing/frac apparatus for use in a subterran

1994-08-17

1997-01-28

Dang, Hoang C.

Wells

Means for forming filter beds

E21B 4302

Patent

active

055970400

ABSTRACT:
An apparatus is disclosed for fracing and gravel packing a subterranean well. The apparatus includes a packer and a liner assembly with a setting tool and crossover assembly. Abrasive wear in the wall of the crossover assembly is abated by providing for conversion of turbulent fluid flow of the fracing or gravel packing fluid into laminar flow immediate the opening within the crossover tool between the interior of the crossover tool and the exterior thereof. An isolator is also provided within the crossover such that when it is opened, a valve head is completely shielded and carried within the device whereby further cutting of the crossover tool wall by fluid flow is greatly abated.

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patent: 4733723 (1988-03-01), Callegari, Sr.
patent: 4944348 (1990-09-01), Whiteley et al.

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