Frequency spectrum analysis of water hammer events during hydraulic fracturing and the associated diagnostic applications
A “water hammer” is a hydraulic impulse created due to the shutdown of pumps at any point during fracturing operations. These hydraulic impulses oscillate between the wellhead and the isolating tools of the current treatment stage at the resonant frequencies of the wellbore, which are controlled primarily by hydraulic length. Analysis of the interaction of hydraulic impulses with the well and fracture network has the potential to provide diagnostic data cheaply and simply, facilitating design optimization. In this work, signal processing techniques are applied to pressure data recorded at high ...
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