Two shallow, extended reach wells on the North Slope of Alaska required fill cleanouts. The TVD of the first well was 3,800 feet with a measured depth of 14,400 ft. for a total horizontal extent of 10,600 ft. The horizontal extent of the second well was 10,466 ft. Both wells were completed with 4 1/2-inch casing.
Prior attempts to clean fill out of these wells and to reach total depth with 2-in. diameter coil and a tractor device were unsuccessful.
Both jobs were completed using a 2 1/8-in. HydroPull™ tool run on 2-in. 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 HydroPull 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.Download as PDF