E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/52
E21B 41/00 (2006.01) E21B 31/00 (2006.01) E21B 31/113 (2006.01) E21B 43/00 (2006.01) E21B 43/04 (2006.01)
Patent
CA 2028924
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.
Gowling Lafleur Henderson Llp
Mobil Oil Corporation
LandOfFree
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