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| Home | HydroPull™ Extended Reach Tool |
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| U.S. Patents 6,237,701, 7,139,219 and pending |
HydroPull™ - Coiled Tubing Reach Enhacement
This compact tool incorporates a flow cycling valve designed for deployment in the BHA above a motor or jetting tool. Flow interruptions caused by the valve generate water hammer impulses that causes the tubing to "walk" forward. The axial vibration generated by the tool reduces friction drag since dynamic friction is substantially lower than static friction. The combination of these factors can double the current limits on coil deployment in horizontal wells. The tool also generates impulsive pressures in the wellbore that act to clean screens and perforations and stimulate deep into the formation.
These tools are available in 1-11/16", 2-1/8" and 2-7/8" diameters. The 1-11/16" size is available in acid compatible materials.
Applications
The HydroPull eliminates the need for friction reducing beads and chemicals for well interventions in extended reach laterals.Extended reach fluid placement including solvents and acidLogging tool deployment
Case Histories
The HydroPull tool has been run on numerous U.S. and Canadian oil and gas wells. The primary application has been extended reach bridge plug milling in horizontal gas shale wells. Examples include: Bridge Plug Milling in the Marcellus Shale (5-Well Program): These jobs required milling bridge plugs in 5000 to 6000-ft horizontal 5.5-in casing to a measured depth of 11,700 to 12,000 feet. Prior to this work, the operator had been specifying friction reducing beads and chemicals. The wells are inclined up to 95° with some heavy sand accumulations. Thirty-one composite bridge plugs were milled using the HydroPull™ and thirty-seven were milled without the HydroPull™ using beads and chemicals. The 2.88-in HydroPull was operated on 2-in tapered coil with a motor and mill using produced water at 2.5 bpm. In the toe of the well the average plug milling time was reduced from 147- to 36-minutes, a factor of four. In the heel the plug milling time was cut in half.
Case histories are also available for Marcellus, Fayatteville, Woodford, Haynesville and Eagleford gas shale completions.
Production from a horizontal heavy oil well in Canada had declined to 44 bpd. Previous attempts to enter the 7" horizontal completion for service were prevented by an obstruction at 950-m. A 1-11/16" HydroPull tool with a bullnose nozzle was deployed on 1-1/2' coil while pumping 150- to 200-lpm produced water with 15% solvent. The tool made steady progress though the obstruction to a depth of 1400-m. The job duration was 5 hours. When the pump was reinstalled, production increased to 600 bpd.
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