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A kind of positive seal system safety testing device
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A kind of well logging tiny signal modulate circuit system
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A kind of LWD tightness measuring devices suppressed automatically
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A kind of high temperature power module circuitry
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A kind of integrated sealing system safety testing device
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A kind of mechanical sealing system safety testing device
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Stratum simulation coil and method of measuring LWD precision by using the same
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Multi-channel power supply detecting system
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Sealing performance detecting device for LWD
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Plug-and-pull device for SMB connector
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Calibration device for array lateral log instrument
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Resistivity tester adhesive dispensing device and method
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Near-bit strong magnet activator with magnetic shielding
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Testing system of logging while drilling ground machine
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Near bit supporting device
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Multicore cable testing system
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Near-bit strong magnet activating instrument with automatic protection function
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Strip measuring exploration plate
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Hollow cylindrical measurement component
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Hollow probe used for measuring geological slurry
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