Case History: SC-HydroPull™ Stimulation & Cleaning Tool
Extended reach solvent placement
with 1.5” coiled tubing in 6”openhole
This job required re-entry into a 6.1-in. (155-mm) diameter horizontal openhole from 4760 to 8070 ft (1451 to 2460 m) MD to place solvent. The horizontal section was 3313 ft (1010 m) long. Prior attempts to enter this well with 1-in. (25 mm) continuous rod failed at 6230 ft (1899 m) MD. The casing was 2.44-in. (62-mm) ID, so a 1.69-in. (43-mm) HydroPull® tool with a four-jet nozzle pattern was run on 1.5-in. (38-mm) coiled tubing. The tool was operated at 1.3 bpm (207 lpm) and at feed rates of 30 to 65 ft/min (9 to 20 m/min). The final 1000 ft (305 m) to TD was entered at 10 ft/min (3 m/min) with snubbing forces well below the coil limits. The solvent was placed at the toe of the well and allowed to soak for 24 hours. The well was re-entered with the HydroPull® tool the following day. Commingled fluid (0.7 bpm [111 lpm] water and 525 scf [14.9 m3] nitrogen) was pumped to lift the solvent from the well.
The HydroPull® tool extended the lateral reach of the coil by 20% or 690 ft (210 m) in this well.