E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 37/00 (2006.01) B08B 7/02 (2006.01) E21B 37/06 (2006.01)
Patent
CA 2289547
Novel abrasive particles for cleaning conduits, particularly subterranean wellbores are described. The particles are rounded, preferably spherical, and have a hardness of 80 to 200 Vickers. The particles are preferably made of non-metallic material such as Calcite pellets. The new abrasives cause significantly less damage to the well tubulars than sand.
L'invention concerne de nouvelles particules abrasives qui permettent de récurer les tubes, notamment les puits de forage souterrains. Ces particules sont arrondies, de préférence sphériques, et ont une dureté comprise entre 80 et 200 Vickers. Elles sont de préférence constituées d'un matériau non métallique, tel que des billes de calcite. Elles abîment significativement moins les tubages des puits que le sable.
Johnson Ashley Bernard
Schlumberger Canada Limited
Smart & Biggar
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