Noble Drilling Services Inc.

Satish K Soni

Martin Helms

According to one embodiment of the invention, a rotary steerable tool includes a drive shaft configured to be coupled to a drill string at an upper end thereof and configured to be coupled to a drilling tool at a lower end thereof. A middle portion of the drive shaft is disposed axially between the upper and lower ends and has a smaller diameter than each of the upper and lower ends. The drive shaft further includes a housing rotatably coupled externally to the drive shaft and at least one housing module coupled to a respective opening in the housing at an axial location corresponding to the middle portion of the drive shaft.

Modular housing for a rotary steerable tool

According to one embodiment of the invention, a system for power generation inside a steering tool includes a drive system having a drive shaft disposed within a wall of the steering tool, a rotating shaft rotatably coupled to a non-rotating sleeve of the steering tool, and a spline coupled to the rotating shaft. The spline is operable to indirectly drive the drive shaft by directly coupling to an idler gear of the drive system.

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Celle, Germany

Satish K Soni