Mathematical Problems in Engineering / 2013 / Article / Fig 2

Research Article

Delay Pressure Detection Method to Eliminate Pump Pressure Interference on the Downhole Mud Pressure Signals

Figure 2

Mud pressure DPSK signal mixed with pump interference.
797549.fig.002a
(a)  Mud pressure DPSK signal without pump interference
797549.fig.002b
(b) Frequency spectrum of mud pressure DPSK signal
797549.fig.002c
(c) Mud pressure DPSK signal mixed with pump interference
797549.fig.002d
(d) Frequency spectrum of mud pressure DPSK signal mixed with pump interference

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