Two different horizontal water jet drilling systems have been developed and extensively field tested. The first, the Ultrashort Radius Radial System (URRS) is built around 32 mm (1-1/4 inch) coiled tubing and provides multiple 30 to 60 m (100 to 200 foot) radials from a vertical borehole. Accuracy is ± 2 to 3° in vertical trajectory.

The second system, the Remotely Piloted System, uses 114 mm (4-1/2 inch) conventional flush joint tubing and is designed to drill for many kilometers (miles) with high three dimensional accuracy. Both systems incorporate Control While Drilling of the radial and provide real-time acquisition and display of drill performance with derived formation properties.

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