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Water distribution system for flow control and water injection measurement of first-level double strata of oil field
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Multi-wheel centralizer
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Water distribution device for oil field
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A kind of full collector for oil pipeline
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A kind of flowmeter for water injection well in oil fields oil pipe
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Double adjusting dropping in and taking off type bias cable control intelligent watering systems
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Double adjusting dropping in and taking off type bias cable control injection well downhole flow regulators
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Double end adjusts eccentric survey and adjusts blanking plug
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One kind being used for the small flow center packer flowmeter string-passing structure in oil field
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It is a kind of to set structure without the afflux of bridge eccentric injection mandrel for the small flow in oil field
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A kind of flowmeter for oil field injection well tune when surveying
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A kind of shunting intelligent watering device for oil field big flow water filling
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A kind of water filling measurement apparatus using regulation eccentric injection allocation with one heart
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Improved oilfield downhole electromagnetic flowmeter
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Structure capable of allowing multiple wires to pass through small diameter
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Electromagnetic flow transducer for downhole water distributor
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