Patent ID: 9169707
Filing Date: 2015-10-27
Classification: E21B,G01V

Abstract:
1. A down-hole stimulation array comprising a frac pump for creating a down-hole hydraulic environment; a plurality of down-hole stimulators connected in a spatial array, each said down-hole stimulator transmitting, in response to a timed activation signal, vibration having an adjustable power spectral density, and a programmable controller for periodically transmitting one said timed activation signal for each said down-hole stimulator; wherein each said down-hole stimulator comprises wherein each said driver element comprises an electromagnet/controller having cyclical magnetic polarity reversal characterized by a variable polarity reversal frequency; wherein longitudinal movement of each said hammer element is responsive to said cyclical magnetic polarity reversal; wherein longitudinal movement of each said hammer element striking, and rebounding from, one said fluid interface is in phase with one said variable polarity reversal frequency; and wherein each said adjustable power spectral density is responsive to one said adjustable rebound cycle time; wherein each said adjustable power spectral density changes in phase with one said adjustable rebound cycle time; wherein said down-hole stimulation array is tunable via at least one said adjustable power spectral density to shift relative transmitted vibration power within transmitted frequencies of at least one said vibration burst; and wherein decreasing at least one said adjustable rebound cycle time causes up-shift of at least one said adjustable power spectral density to shift relative transmitted vibration power within at least one said vibration burst to relatively higher frequencies for tuning said down-hole stimulation array.