... inaccuracy, and variance in casing joint diameters. The new cost-effective cement displacement monitoring method is based on the analysis of the pressure pulses generated by the top cement plug passing the casing. These pressure pulses are detected by the standard pressure transducer installed...

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... In traditional plug-and-perf operations, the HFPM can detect swift events such as the landing of an isolation ball on a fracturing plug, which results in a pressure pulse that can often be missed by a low-frequency acquisition system. It can also detect the pressure spike generated by setting...

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... previously demonstrated to be effective, particularly in applications where sliding with steerable motors has been problematic. Axial oscillation in the drill string is generated through a series of pressure pulses coming from one part of the AOT. The pressure pulses act on the pump open area of a shock tool...