Schlumberger

Industry Article: Reliability of Openhole Sidetrack Operations Improved in Challenging Plays

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Publication: World Oil
Publication Date: 10/22/2013

Openhole sidetracking is most commonly applied in three scenarios: drilling a horizontal lateral from a main wellbore; drilling a lateral in a multilateral well, or managing unplanned events such as a collapsed borehole or lost bottomhole assembly (BHA). The most frequently employed openhole sidetracking methodology begins with setting a cement plug, followed by a directional BHA once the cement had hardened. The success of the plug-setting operation depends on the formation’s compressive strength, the quality of the cement, and the cure time. A plug failure can result in added trip time, the need for a new cement plug, re-drilling previously drilled footage, and the loss of rig time and reconfiguration of drilling trajectory. The TrackMaster OH openhole whipstock and sidetracking system—developed by Schlumberger and successfully pioneered by Chesapeake Operating Company—was developed to consistently and reliably achieve a precise kickoff with a single trip.




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TrackMaster OH
Openhole Whipstock Sidetracking System

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The TrackMaster OH openhole whipstock system provides application-specific, one-trip sidetrack reliability and cost optimization for sidetracking around obstacles downhole.
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