FIELD: acoustics.
SUBSTANCE: invention relates to downhole acoustic means for telemetry of signals. Device for amplification of acoustic signal, comprising acoustic telemetry transmitter, with range of operating acoustic communication frequencies, hydraulic pulse source, having fundamental frequency of pulsations, and damping adapter. Hydraulic pulse source can excite vibration damping adapter to increase axial vibrations in drill string, mechanically connected to source of hydraulic pulse and damping adapter, to reduce static friction between drill string and formation surrounding drill string. Vibrations are excited on fundamental frequency, which is outside range of operating acoustic communication frequencies.
EFFECT: high reliability of transmitting acoustic signals owing to high amplitude of oscillation in drill string.
20 cl, 7 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| GAS INFLOW DETECTION IN WELLBORE | 2012 |
|
RU2570211C2 |
| SYSTEM (VERSIONS) AND METHOD (VERSIONS) FOR ESTIMATION OF DEEP FORMATION | 2012 |
|
RU2613680C2 |
| DEVICE FOR DYNAMIC CONTROL OF VIBRATION, SYSTEM AND METHOD | 2012 |
|
RU2634751C2 |
| DEVICE FOR HYDROPULSE DOWNHOLE TELEMETRY, COMPRISING VALVE WITH LOW TORQUE | 2015 |
|
RU2705648C1 |
| SYSTEMS AND METHODS FOR ADJUSTMENT OF DRILLING PRESSURE AND PHASE BALANCING | 2012 |
|
RU2624494C2 |
| SYSTEM AND METHOD FOR TELEMETRY OF DATA BETWEEN NEIGHBORING WELLS | 2017 |
|
RU2755609C2 |
| RANGE MEASUREMENT USING MODULATED SIGNALS | 2013 |
|
RU2628660C2 |
| DEVICE, SYSTEM AND METHOD FOR CALIBRATING DOWNHOLE CLOCK PULSE GENERATOR | 2014 |
|
RU2682828C2 |
| DEVICE FOR DETERMINING DENSITY WITHOUT A SOURCE, METHODS AND SYSTEMS | 2012 |
|
RU2608636C1 |
| DELETION OF PSEUDO ECHO-SIGNALS FROM ACOUSTIC WAVES | 2014 |
|
RU2630005C2 |
