Sperry Drilling Services is Halliburton's division of MWD (measurement while drilling), LWD (Logging While Drilling), DD (Directional Drilling) and SDL (Surface Data Logging) tools and services.

This line of services provides wellbore directional surveys, well logs, and drilling information in real time while drilling and includes equipment and personnel to drill the wellbore.

From year 2009 - Sperry Drilling.

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