Reliability of openhole sidetrack operations improved in challenging plays ///

Openhole sidetracking is most commonly applied in three scenarios: to drill a horizontal lateral from a main wellbore; to drill a lateral in a multilateral well; or to manage unplanned events, such as a collapsed borehole or lost BHA. Traditionally, the most frequently employed openhole sidetracking methodology began 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. Consequently, a plug failure will 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.

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