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US3390377A
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Acoustical well logging methods and apparatus
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US3388325A
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Apparatus for supplying an equal potential to circumferential portions of a circumferentially extending electrode
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US3387659A
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Valved well packer and setting tool therefor
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US3373604A
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Formation pressure-testing apparatus
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US3304538A
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Acoustic well logging downhole control system
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US3358771A
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Multiple-opening bypass valve
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US3374838A
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Fluid expansible packer and anchor apparatus
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US3363695A
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Hydraulic anchor
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US3374840A
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Well tool
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US3295615A
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Formation-testing apparatus
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US3374841A
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Packer with shear member
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US3298440A
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Non-retrievable bridge plug
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US3338310A
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Full-opening well tool
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US3261402A
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Formation testing apparatus
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GB1089024A
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Earth formation fluid sampling apparatus
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US3344860A
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Sidewall sealing pad for borehole apparatus
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US3329204A
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Methods for well completion
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US3329218A
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Apparatus for detonating shaped charges
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US3254221A
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Articulated gamma-gamma borehole logging apparatus
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US3301063A
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Pressure recorder
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