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Tank bottom sediment sampling device
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Universal disassembling tool for crank pin of oil pumping unit
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Core displacement experiment method for heterogeneous reservoir in different displacement modes
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Method for analyzing fidelity velocity of seismic data in multiple wave development area
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Tool for disassembling wire connector of spanning rod
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Method for optimizing rod column of carbon fiber sucker rod and diagnosing working condition
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Underground electronic liquid inlet device for oil-gas well
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Intelligent and safe perforator for cleaning pore
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Centrifugal pump filter belt cleaning device
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Container non-stop desilting and sludge reduction treatment device
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Double-acting control valve for casing patching
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Numerical simulation method for evaluating plugging effect of plugging agent in fracturing process
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Well logging sky pulley linkage
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Screw pump direct-drive device
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Method for explaining seismic horizon to deposition unit in close well pattern area
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Polymerization proppant automatic lifting dry-wet screening device and method
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Horizontal gas well is with flexible rotatory plunger drainage instrument
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Horizontal gas well is with interior spiral drainage instrument of oil pipe
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Quantitative test method and device for polymer in polymer flooding reservoir rock
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Synthetic sealing filler special for water injection well test blowout prevention pipe and preparation method thereof
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