FIELD: oil and gas boreholes drilling. SUBSTANCE: sensor has central bush, located coaxially to sensor's body and cavity resonator is made in the form of quarter wavelength branch of pipe. One butt of pipe is closed and another one open and linked with hole of central bush. Second butt is located in ring-type space along helical line between sensor's body and bush. EFFECT: increased accuracy of measurements due to keeping volume of inner cavity of resonator's chamber stable by hard particles self-clearing under action of their gravity. 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| TURBODRILL SHAFT ROTATION FREQUENCY CONTROL SENSOR | 1992 |
|
RU2039234C1 |
| DEVICE FOR CONTROL OF ANGLE OF INSTALLATION OF DEFLECTING TOOL | 1991 |
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| TURBODRILL SHAFT ROTATIONAL SPEED CONTROL SENSOR | 1993 |
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| ACOUSTIC TRANSDUCER OF TURBODRILL SHAFT ROTATION SPEED | 0 |
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SU1810524A1 |
| METHOD OF NOISE MODULATION IN OPERATIONAL WELL CASING STRING OUTSIDE SPACE DURING PERIODICAL LIQUID PUMPING OFF BY SUBMERGED ELECTRICAL PUMP USING OIL WELL TUBING | 1992 |
|
RU2068495C1 |
| MODULATOR OF SONIC VIBRATION IN TURBO-DRILLING | 0 |
|
SU1606694A1 |
| ACOUSTICAL VIBRATION MODULATOR | 0 |
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SU1661391A1 |
| MONITOR OF ROTATIONAL SPEED OF TURBO-DRILL SHAFT | 0 |
|
SU1677284A1 |
