Solid-free anti-hydrogen-sulfide low-damage well washing fluid and preparation method
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Vortex flow guiding device
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Water injection string without surface flow and water injection technological method of water injection string
CN105089567A
Adjustable quick liquid discharging and oil testing device for low-density fluid in deep well and operating method of adjustable quick liquid discharging and oil testing device
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Screen pipe horizontal well production profile testing apparatus and testing method for same
CN104653145A
Long-rubber-barrel differential pressure type water filling packer capable of washing well
CN104612614A
Arc-shaped reducing expansion device for expansion pipe
CN104592965A
Double-coating gel-coated sand-preventing particle and preparation method thereof
CN104420869A
Technology simulation testing device for horizontal well
CN104420858A
Layering process pipe string
CN104420834A
Separate-layer sand blocking simultaneous production pipe string
CN104278988A
Sidetracking well three-layer water finding and blocking and production operation integrated tubular column and operating method thereof
CN104278970A
Hydraulic type underground layered water detecting and blocking switch
CN104278987A
Sidetracking well two-layer water finding and blocking and production operation integrated tubular column and operating method thereof
CN104278977A
Heavy oil well dual-injection-pump lifting tubular column
CN104153740A
Differential pressure type oil sleeve communication valve
