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US3309657A
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Dual channel well logging system
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Logging channel disabling circuit
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Focused well logging system using zero potential remote electrode
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Acoustic logging apparatus with downhole receivers controlled by spaced switching
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Temperature stabilized radioactivity well logging unit
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Acoustic well logging method and apparatus
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Single conductor acoustic well logging system
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US3212601A
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Single conductor acoustic well logging system
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US3172036A
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Method and apparatus including capacitor circuit storage means for the delayed recording of borehole measurements
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US3082837A
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Acoustic bore hole logging systems and apparatus
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US3077670A
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Method and apparatus for making a dipmeter survey of a borehole
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Acoustic velocity bore hole logging systems and apparatus
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Systems for acoustic velocity logging of earth formations
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Telemetering system for use in borehole logging to control downhole tool from surface
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Sonic bore hole logging devices
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US3076928A
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Logging system for earth formations
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Focused well logging systems
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Apparatus for collecting and analyzing sample fluids
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Method and apparatus for determining the dip of strata penetrated by a borehole
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US2957083A
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Radioactivity well logging system
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