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US 2003/0141988 A1Published application
Logging sondes for use in boreholes
AssigneeSondex Limited
InventorsWilliam P. Stuart-Bruges, Andrew P. Bridges
Life of this patent
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Abstract
A wireline logging sonde (10) for sensing fluid properties in a borehole has a main body (12) and a plurality of sensor capsules (30) mounted peripherally of the main body on fingers (22, 24). The sensor capsules transmit data signals at radio frequency to the main body, and are powered from the main body by inductive coupling. The need to provide pressure-proof wire connections between the main body and into the sensor capsules is thus completely avoided.
Claims9
A wireline logging sonde, comprising;
- a main body (12) for mechanical and electrical connection to a wireline and having a plurality of retractable outwardly-extending fingers (22,24);
- a telemetry section (40,42) housed in the main body for electrical coupling to the wireline, the telemetry section including first transmission/reception means (68,72) for transmitting power and for receiving data signals;
- and
- a plurality of sensor devices (30) mounted on the outwardly extending fingers peripherally of the main body, each sensor device comprising a sensor element (37), and second transmission/reception means (34,36) for transmitting to the first transmission/reception means data signals dependent upon the output of the sensor element and for receiving power from the first transmission/reception means by electromagnetic transmission at radio frequency.
1 more element
A wireline logging sonde, comprising:
- a main body (12) for mechanical and electrical connection to a wireline;
- a telemetry section (40,42) housed in the main body for electrical coupling to the wireline, the telemetry section including first transmission/reception means (68,72) for transmitting power and for receiving data signals;
- and
- a plurality of sensor devices (30) mounted peripherally of the main body, each sensor device comprising a sensor element (37), and second transmission/reception means (34,36) for transmitting to the first transmission/reception means data signals dependent upon the output of the sensor element and for receiving power from the first transmission/reception means by electromagnetic transmission at radio frequency;
- and
- wherein the first transmission/reception means (68,72) transmits interrogation signals which are received by the second transmission/reception means.
3 more elements
Dependencies are inferred from the claim text.