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Der BOREHOLE SHUTTLE ist ein kabelloses, geophysikalisches
Loggingsystem für stark abgelenkte und horizontale Explorationsbohrungen, das
gemeinsam mit der RAG seit 1992 auf Seilkernbohranlagen zu einem sicheren und
kostengünstigen Messverfahren entwickelt wurde.
Cable-less
geophysical logging system for highly deflected and horizontal exploratory
drillings. Developed jointly with Ruhrkohle AG with wire-line core drilling rigs
to achieve a sophisticated and demonstrably reliable and cost-effective
measuring system.
Technische Daten /Technical
specifications:
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Borehole-Shuttle |
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Sensors:
Dip/Caliper: A 12 channel ultrasonic transducer head, working in
impulse-echo method, senses the amplitude and traveltime of the acoustic
beam, reflected from the borehole wall.
Inclination/Roll: Three-axis accelerometer sensors allow reading of
the actual inclination, the roll position, and the movement of the sonde.
Gamma-Gamma-Density: A radioactive source emits gamma-rays into the
formation. The receiver is located at 50 cm distance, 20'' Long Space
Density, and senses the scattered gamma-rays.
Gamma: The gamma sensor is located in the upper part of the sonde. A
NaJ-photocounting unit senses the naturally radioactivity of the formation.
Depth measurement: During logging a Drill-String-Recorder with
attached rope-sensor is mounted at the derrick. |
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| Technical Data: |
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| length mounted |
5,34 m |
| length of sensor part |
0,95 m |
| diameter |
60 mm |
| weight |
61 kg |
| temperature |
70° C |
| pressure approx. |
200 bar |
| mission time approx.
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10 h |
| logging interval approx.
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1200 m |
| logging speed recom. |
200 m/h |
| inner core barrel type |
HQ, CHD101, SK4
¼ |
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l |
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further adaptations are possible
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Further information:
info / order
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