Extended-length power sections improve PDM drilling
- Baker Hughes INTEQ, Aberdeen (United Kingdom)
Since being introduced in the 1960s, downhole positive displacement motors (PDMs) have evolved steadily from early applications. Initially considered only for high-speed, medium-torque, initial directional kickoffs; and short, corrective directional operations, these tools were not expected to operate for more than a few hours at a time. Progressive improvements have led to tools that are capable of extended runs in a variety of configurations. Current generation PDMs have a broad range of applications and include fully steerable systems for directional or horizontal drilling, and instrumented motors incorporating formation evaluation measurement-while-drilling (FEMWD) systems for geological steering and reservoir navigation. Design improvements also expanded PDM applications to include hole sections traditionally drilled with conventional rotary-driven bottomhole assemblies (BHAs). This paper reviews these new motor designs and provides case histories of their performance.
- OSTI ID:
- 175990
- Journal Information:
- World Oil, Journal Name: World Oil Journal Issue: 12 Vol. 216; ISSN 0043-8790; ISSN WOOIAS
- Country of Publication:
- United States
- Language:
- English
Similar Records
Navigation drilling technology progresses
How to optimize motor drilling in non-deviated wells