|
CN111206881A
|
|
PDC drill bit suitable for mining geological shale gas with sand shale in slope
|
|
CN111188577A
|
|
Pulse acceleration PDC drill bit
|
|
CN110152949A
|
|
A kind of varnish systems of PDC drill bit
|
|
CN110280959A
|
|
Fixed equipment for PDC drill bit welding
|
|
CN108716367A
|
|
Drilling speed tool
|
|
CN107143287A
|
|
Yangtze Cambrian system shale gas exploitation combined bitses during one kind is applicable
|
|
CN106907113A
|
|
A kind of applicable Central Hunan upper palaeozoic shale gas exploitation PDC drill bit
|
|
CN106907112A
|
|
A kind of drilling well PDC drill bit
|
|
CN105927160A
|
|
Rotary jet flow PDC drill bit
|
|
CN105804697A
|
|
Environment treatment equipment for petroleum drilling waste mud
|
|
CN105888562A
|
|
Inclination-proof PDC drill bit capable of easily removing chips
|
|
CN103711435A
|
|
Crankset diamond bit for well drilling
|
|
CN103862105A
|
|
Petroleum drill body mold core modification device
|
|
CN103867131A
|
|
Diamond compound cutting head
|
|
CN103867128A
|
|
Indexable diamond compound blade clamping device
|
|
CN103862125A
|
|
Sintering device for diamond compound cutting head
|
|
CN103801661A
|
|
Drilling bit processing combination mold
|
|
CN103801870A
|
|
Fixing device for welding of drill bit
|
|
CN103801814A
|
|
Non-isothermal welding device for drill bit
|
|
CN103801784A
|
|
Drill bit welding device
|
