B - Operations – Transporting – 08 – B
Patent
B - Operations, Transporting
08
B
B08B 7/00 (2006.01) B08B 3/00 (2006.01) B08B 9/00 (2006.01) C09K 8/528 (2006.01) E21B 37/02 (2006.01) E21B 37/06 (2006.01)
Patent
CA 2182091
The present invention relates to a method of removing alkaline earth sulphate scale (22) from the interior surface of downhole production tubing (16) comprising contacting the scale (22) with a solvent having a specific gravity of at least 1.2 while simultaneously milling the scale (22) with a rotating mill head (20) connected to a downhole motor.
L'invention porte sur un procédé d'élimination des dépôts (22) de sulfates de métaux alcalino-terreux de la surface intérieure de tubes de production (16) de forages consistant à les (22) mettre en contact avec un solvant d'une densité spécifique d'au moins 1,2 tout en les (22) meulant à l'aide d'une meule (20) rotative entraînée par un moteur de forage.
Exxonmobil Oil Corporation
Gowling Lafleur Henderson Llp
Mobil Oil Corporation
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