GB9411238D0
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Nuclear logging apparatus
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GB9406968D0
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Nuclear logging apparatus
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GB9324859D0
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Nuclear logging apparatus
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GB9209854D0
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Transmission of data pulses on intrinsically safe power lines
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GB9207374D0
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Mwd acoustic borehole caliper
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US5215152A
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Rotating pulse valve for downhole fluid telemetry systems
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GB9127144D0
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A method for analyzing formation data from a formation evaluation measurement while drilling logging tool
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GB9125878D0
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Method for the correction of magnetic interference in the surveying of boreholes
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GB9123399D0
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Method of detecting fluid influx in a borehole
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Acoustic data transmission method
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Thread timing for a rotary shouldered connection
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US5144245A
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Method for evaluating a borehole formation based on a formation resistivity log generated by a wave propagation formation evaluation tool
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MWD tool for deep, small diameter boreholes
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US5163029A
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Method for detection of influx gas into a marine riser of an oil or gas rig
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US5138263A
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Electromagnetic formation evaluation tool
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US5091644A
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Method for analyzing formation data from a formation evaluation MWD logging tool
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US5074681A
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Downhole motor and bearing assembly
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US5134285A
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Formation density logging mwd apparatus
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Radiation detector assembly for formation logging apparatus
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NL9002727A
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Method for decoding mwd signals using pressure signals in the ring-space.
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