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Electromagnetic wave resistivity measuring device while drilling
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High-pressure well cementing cement head
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Roller drag reducer for continuous oil pipe
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Vibration impact short joint
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Casing method for fragile stratum or broken stratum
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CN112253045A
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Sliding sleeve type impacting seat
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Oil pipe sand removal device and sand removal method for oil and gas well
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CN112253033A
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Combined type large-drift-diameter rotary control head rotary assembly
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Liner hanger and anti-abrasion sealing structure thereof
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Anti-tripping motor assembly of screw drill
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Wear measuring device and method for hinged universal shaft assembly
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Method for rapidly determining lost circulation position in long open hole section
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Method for identifying debris scatterers in borehole diameter measurement while drilling
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CN112227988A
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Visual horizontal annular space rock debris migration simulation equipment
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CN112227989A
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Visual horizontal annulus rock debris migration simulation method
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CN112228047A
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Method for judging drilling overflow and leakage
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CN112228046A
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While-drilling ultrasonic borehole diameter data correction method
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CN112228045A
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Drilling hole diameter measuring system suitable for working conditions while drilling
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CN112227940A
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Oil gas well wellhead area is pressed drilling equipment
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Shale gas horizontal well fracturing vertical reconstruction volume control method
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