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AbstractMechanical whipstock plugs are often chosen in preference to conventional cement plugs to sidetrack in very strong formations or where a very precise short-radius kickoff is critical, even though the use of downhole tools requires extra time and introduces other risks and concerns to the drilling operations.In this paper we present a new cement system, based on the optimization of the packing volume fraction (PVF) of the dry blend, which results in a set cement with mechanical properties superior to those of regular cements: compressive strength, impact resistance, and toughness. These cements can be used to achieve the same objectives as a mechanical whipstock plug with less risk and offer potential time savings to the overall operations.The advantages of this cement system are demonstrated in a field test in which a kickoff plug was successfully set and used to drill a short-radius hole.
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