FIELD: oil and gas industry.
SUBSTANCE: active collar locator includes opposite connected excitation coils wound on soft magnetic material, measurement coil arranged between them, instrument amplifier, common amplifier and micro processor. At that, measurement coil is connected to inlet of instrument amplifier, and micro processor provides pumping of required frequency through common amplifier to excitation coils and measures the change of delay of output signal from instrument amplifier.
EFFECT: increasing stability and resistance of determining threaded connection of casing pipes owing to increasing the device sensitivity.
3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR INCREASING THE NOISE IMMUNITY OF THE TECHNOLOGY FOR LOCATING SLEEVE JOINTS OF CASING STRINGS OF GEOLOGICAL EXPLORATION WELLS AND A DEVICE FOR ITS IMPLEMENTATION | 2022 |
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RU2801354C1 |
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| METHOD DETERMINING LEVEL OF FLUID IN WELL AND GEAR FOR ITS IMPLEMENTATION | 1996 |
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| METHOD AND DEVICE TO ELIMINATE DRILL TOOL STICKING | 2009 |
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| METHOD FOR TRANSPORTATION, TELEMETRY AND/OR ACTIVATION BY MEANS OF OPTIC FIBER | 2003 |
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| DEVICE FOR OPERATION OF WELL, EQUIPPED BY ELECTRICAL CENTRIFUGAL PUMP | 2009 |
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RU2386806C1 |
