Case History: SC-HydroPull™ Stimulation & Cleaning Tool
New record extended reach fill cleanout with coiled tubing – 10,600 foot horizontal
Two shallow, extended reach wells on the North Slope of Alaska required fill cleanouts. The TVD of the first well was 3800 feet with a measured depth of 14,400 feet for a total horizontal extent of 10,600 feet. The horizontal extent of the second well was 10,466 feet. Both wells were completed with 4-1/2-inch casing.
Prior attempts to reach total depth to clean fill out of these wells with 2-inch diameter coil and a tractor device were unsuccessful.
Both jobs were completed using a 2-1/8-inch HydroPull® tool run on 2-inch coil with a flow rate of 2.2 bpm. The HydroPull®
job planning software indicated lockup without the tool at 10,000 ft MD. The average annular flow velocity was 190 fpm, which is marginal for cuttings transport in a shallow inclined well, however the pulsed annular flow provided by the tool ensured adequate cuttings transport and both jobs were completed without incident. Total job time was 1 day for the first well and 2 days for the second well.