US3200251A
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Apparatus for neutron-neutron well logging
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US3134929A
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Gas pressure control means for accelerator source
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US3023507A
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Apparatus for measuring the displacement of a well tool from an adjacent surface
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US3105148A
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Variable thermal-conductance vacuum-walled container for scintillation detectors
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US3103644A
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Plural channel time sharing multiplex system
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US3134904A
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Method of radioactivity tracer logging
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US3058227A
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Retractor device for oil well logging tool
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US3024407A
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Belt charging means for borehole electrostatic generators
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US3044175A
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Responder and telemetering transmitter for borehole caliper
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US3110807A
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Method and apparatus for locating borehole cement by the use of gamma rays
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US3073958A
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Apparatus for simultaneous neutron and photon logging with a single detector
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US3071687A
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Geophysical prospecting methods and apparatus
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US3120612A
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Oxygen-silicon logging method utilizing equal intensity but different energy neutrons
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US3072790A
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Apparatus for cyclic activation logging
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US3072335A
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Analog computer for determining confidence limits of measurement
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US3007109A
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Apparatus for detecting casing joints
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US3060326A
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Automatic pulse amplitude control
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US3046467A
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Apparatus for regulating belt-type electrostatic generators
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US3121164A
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Geophysical prospecting method by means of nuclear radiation
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US3127512A
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Neutron-gamma geophysical prospecting method and apparatus
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