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Keyword [drill collar]
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1. The Analysis Of The Drill Collar Thread Failure And Research Of Improving Method
2. Development Of MIG Pulsating Narrow Gap Automatic Welding Machine For Drill Collar
3. The Study On Recrystallization Behavior Of RE Drill Collar Steel During Hot Deformation
4. Effect Of Rare Earth Ce On Recrystallization Behaviour In Hot Rolling And Microstructure And Properties Of4145H Drill Collar Steel
5. The Research On Repairing Theory Of Drill Collar In Petroleum Field
6. The Research On The Repaiirng Method Of Drill Collar Taper Threads
7. Study On Dynamic Performance Of Drill Collar Spiral Groove CNC Milling Machine
8. The Pipeline Design For Automatic Test Hardness Of Drill Collar
9. Drill Collar Steel Deep Hole Processing Technology
10. The Research On H2S Corrosion Behavior And Laws Of AISI4145H Drill Collar Steel
11. Improve The Drill Collar Low-temperature Impact Performance Process Method Research
12. Studies With High Nitrogen Austenitic Stainless Steel Of The New Non-magnetic Drill Collars
13. Failure Analysis And Prevention Of The Oil Drilling Tools
14. Research On Processing Technology Of High Nitrogen Austenitic Stainless Steels For Offshore Oil And Gas Drilling Application
15. Three-dimensional Finite Difference Simulation Of Acoustic Logging While Drilling And Study On Acoustic Insulation Performance Of Grooved Drill Collar
16. Research On The Microstructure And Properties Of High-performance Cr-Mn-N Austenitic Stainless Steel During Temperature Deformation
17. Study On Microstructure And Properties Of 0Cr20Mn18Mo2Ni1.8N0.8 Steel For Non-magnetic Drill Collar
18. Research On Hot Deformation Behavior Of High Nitrogen Austenitic Stainless Steel For Non-magnetic Drill Collars
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