This article provides an overview of OSES Tempress extended reach and phase separation tools.
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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.
The customer needed to mill out five composite bridge plugs in the toe of a long horizontal Marcellus Shale. The well casing was 5-1/2 inch with a vertical depth of 7720 feet and measured depth of 16,982 feet. This job was completed on 2 inch coiled tubing using a 2-7/8″ diameter standard-impact HydroPull™ tool, Baker Hughes Xtreme motor and five blade mill.
The job was simulated using the HydroPull™ job planning software, which predicted a maximum horizontal reach of 9700 feet. Without the HydroPull™ tool, the software predicted lockup due to coiled tubing buckling at 5500 feet.
The tool was run at 2.5 bpm. The average plug milling time was 25 minutes and the total job duration was under two days.
The extended reach of 9260 feet represents a new record for a coiled tubing millout and a 70% increase in horizontal reach on this well.