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High-reliability soluble bridge plug
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Compression packer
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Hydraulic expansion type packer
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Bridge plug for oil and gas well seal
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sliding sleeve type multi-layer fracturing sand blower
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A kind of oil well is shorted with oil pipe
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A kind of scalable oil pipe short circuit in producing well
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Downhole electric control water blockoff increases production derailing switch
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The electronic water clogging tool of oil well
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A kind of hydraulic deblocking tubing anchor
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A kind of Mechanical course distributor
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A kind of Mechanical course injection well downhole flow regulator
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A kind of injection well downhole flow regulator for realizing switch by electromagnetic drive
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A kind of automatically controlled distributor
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A kind of gravity seat card tubing anchor of oil well
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A kind of distributor being conveniently replaceable water nozzle in blanking plug
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A kind of concentric constant-pressure intelligent injection well downhole flow regulator of bridge-type for water injection well
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One kind having draw off gear vertical pipe sanding machine
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A kind of electronic water clogging tool of oil well
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A kind of oil pipe short-circuit device of oil well
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