Anti-sand bridge tool and method for dislodging sand bridges

Details Anti-sand bridge tool and method for dislodging sand bridges Anti-sand bridge tool and method for dislodging sand bridges

1989-10-31

1990-10-23

Neuder, William P.

Wells

Processes

Graveling or filter forming

166177, E21B 3708

Patent

active

049644645

ABSTRACT:
An anti-sand bridge tool for dislodging a sand bridge between a liner wall and a casing wall of a gravel packed well completion. The tool comprises a tubular sub pipe having a first end and a second end, the first end having means for connecting the tubular sub pipe to a tubular work string; a hollow flexible member for delivering a fluid at high pressure having a first end and a second end, the first end of the flexible member adapted for attachment to the second end of the tubular sub pipe; and a striking means having a fluid inlet orifice and at least one fluid exit orifice, the fluid inlet orifice connected to and in fluid communication with the second end of the flexible member; whereby initiation of fluid flow through the tool effects an arcuate movement of the striking means resulting in the striking means contacting the liner wall in a manner effective to dislodge a sand bridge. Also provided is a method for dislodging sand bridges encountered during gravel packing operations.

REFERENCES:
patent: 2174348 (1939-09-01), Damond
patent: 3101499 (1963-08-01), Greenfield
patent: 3770054 (1973-11-01), Solum
patent: 3830294 (1974-08-01), Swanson, Jr.
patent: 3897605 (1975-08-01), Dickinson
patent: 4192375 (1980-03-01), Maly et al.
patent: 4711302 (1987-12-01), Jennings, Jr.
patent: 4815653 (1989-03-01), Autry et al.

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