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CN109048823A
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support frame for petroleum pipeline
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CN108905333A
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A kind of crude oil pipeline pipe fitting for security protection
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CN108843831A
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A kind of over-pressure safety device for dielectric cavity in DP technology
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CN108818483A
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A kind of overturning-preventing oil equipment storage device
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CN109174839A
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A kind of petroleum pipeline deposit cleaning device
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CN109078934A
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A kind of petroleum transportation pipeline inner wall processing equipment
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CN108869821A
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Pressure relief device for oil field pressure medium
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CN109018680A
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The fixation device of slip socket
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CN108994758A
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Slip socket support device
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CN108979548A
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PDC drill bit bit body
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CN108979563A
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A kind of drill and petroleum extraction tools
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CN108952581A
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The boring tool of pump pressure can be constrained
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CN108868627A
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Regurgitate type drill bit
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CN108979544A
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A kind of compact bit
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CN108979547A
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A kind of PDC drill bit facilitating spoil disposal
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CN108979545A
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A kind of PDC drill bit with anti-loosening property
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CN108979546A
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A kind of PDC drill bit promoted with drilling rod connection reliability
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CN109025832A
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A kind of geological drilling drill bit optimizing structure stress
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CN109025829A
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A kind of drilling well drilling tool
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CN107091067A
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Petroleum drilling takes oil well de-waxing apparatus
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