Case History: SC-HydroPull™ Stimulation & Cleaning Tool
Sand cleanout and solvent stimulation in horizontal heavy oil wells Saskatchewan
Well production increased from 44 to 605 bbl (6996 to 96,187 l) per day with low water cut. For the first well, a 1.69-in. (43-mm) HydroPull™ tool was operated on 1.5-in. (38 mm) coil to enter a 7-in. (18 mm) slotted liner in a heavy oil horizontal completion. Prior attempts to enter this well were prevented because of obstructions between 3100 and 3800 ft (945 and 1158 m). A bullnose nozzle was run. The tool was operated at a flow rate of 1.3 bpm (207 lpm) of produced water plus 15% AS-1 solvent (kerosene and xylene). The tool slowed in the area of the obstructions, but moved through at a feed rate of 8 ft/min (2.4 m/min), then it resumed at a feed rate of 20 ft/min (6 m/min). TD was reached at 4592 ft (1400 m), and the tool was run out of the hole at 33 ft/min (10 m/min). A total of 280 bbl (44,516 l) of fluid was pumped. Well production increased from 44 to 605 bbl (6996 to 96,187 l) per day with low water cut.