|
CN105038736A
|
|
Positive-charged polyglycol anti-collapse drilling fluid
|
|
CN105001903A
|
|
Processing technology for crude oil
|
|
CN105038755A
|
|
Technique for preparing foam flooding for petroleum extraction
|
|
CN105062549A
|
|
Sealed filtration system assembly process for sulfur-containing petroleum raw liquid
|
|
CN105038842A
|
|
Crude oil desalting and dewatering technique
|
|
CN105001848A
|
|
Preparing method for compound chemical flooding used for tertiary oil recovery
|
|
CN105018133A
|
|
Screening method for sulfur-containing petroleum raw liquid in sealed filtration apparatus
|
|
CN105001843A
|
|
Preparation method of oil-base drilling flushing fluid
|
|
CN104895501A
|
|
PDC drill bit with high drilling speed
|
|
CN104929572A
|
|
Method for cementing wells during petroleum exploration
|
|
CN104913121A
|
|
Improved oil conveying pipeline support
|
|
CN104896207A
|
|
Stable-structure type petroleum pipeline
|
|
CN104934730A
|
|
Grounding device for petroleum engineering
|
|
CN104929540A
|
|
Collision-rare mechanical assembly for pipe clamping
|
|
CN104929541A
|
|
Limiting mechanism for demounting drill pipes
|
|
CN104912498A
|
|
Drill pipe stroke position limiting structure
|
|
CN104894342A
|
|
Machining method of petroleum drilling rod
|
|
CN104912489A
|
|
Easy-to-operate petroleum drilling rig moving device
|
|
CN104908037A
|
|
Rotary upper mechanical arm for drill moving
|
|
CN104926025A
|
|
Treatment technique of chemical wastewater in petroleum refining process
|
