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Drill String Torque ReducerThe DSTR is a down-hole drill string tool intended for use in deviated wells where excessive rotary torque causes drilling problems.  The DSTR is an integral drill string component consisting of a short mandrel fitted with a bearing supported, non-rotating sleeve. The DSTR is positioned between the connections of the drill pipe at the well radius section of the hole. Achieving an international award for innovation at the Houston oil show in 1996, the tool is now acknowledged as the industry standard. With a minimum of 40 tools installed in the drill-string, the tool can reduce drilling torque by as much as 40% under extremely high side forces; saving fatigue on the pipe and rig power. |
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Another benefit seen with the tool is the reduction of casing wear. For a given deviation profile, the applications program assists in maximising the tools performance by determining the deployment in the critical sections of the borehole. However, for most ERD applications the tools are used in the build sections of the borehole helping to extend the envelope of rotary drilling. Tool Features
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