manufacturing method of hollow rods, particularly of the type used for collars of drills for oil wells

• 1. 用于空心杆内壁强化的处理设备和空心杆强化处理方法 [P] . 中国专利： CN110842083A . 2020-02-28
• 2. 一种油井空心杆洗井温度的确定方法 [P] . 中国专利： CN104213873B . 2016.10.12
• 3. manufacturing method of hollow rods, particularly of the type used for collars of drills for oil wells [P] . IT8367713D0 . 1983-06-29

  机译： 空心杆的制造方法，特别是用于油井钻collar的空心杆

• 4. Deep well drill - has linear motor coils for drill collar in hollow drill bit with cable power supply [P] . 德国专利： DE2441112A1 . 1976-03-11

  机译： 深井钻-具有线性电机线圈，用于空心钻头中的钻collar，带有电缆电源

• 5. The machine to be expanded, the rods and the locks of foils drilling and other articles hollow of the same type. [P] . 法国专利： FR583775A . 1925-01-21

  机译： 待扩展的机器，钻杆和铝箔锁以及其他相同类型的中空物品。

• 1. Frequency dependence of electron temperature in hollow cathode-type discharge as measured by several different floating probe methods [J] . Shuichi SATO, Hiromu KAWANA, Tatsushi FUJIMINE, 等离子体科学和技术（英文版） . 2018,第008期
• 2. Mechanical model of hollow-external-screw drill rod for lunar soil particle vertical conveying [C] . Wei Cheng, Wang Hongliu, Liu Tianxi IEEE International Conference on Control and Automation . 2013
• 3. Development of a high-temperature high-pressure process for the manufacture of Diamond-Tungsten-Metal composites for oil and gas drilling. [D] . Gu, Lin. 2015
• 4. Validation and Comparison of Two Sampling Methods to Assess Dermal Exposure to Drilling Fluids and Crude Oil [O] . Karen S. Galea, Carolyn McGonagle, Anne Sleeuwenhoek, -1
• 5. REKALKULASI KONSTRUKSI MESIN AUTO DRILLING PUNCH PADA PROSES ROD MACHINNING DI PT. SHOWA INDONESIA MANUFACTURINGud( RECALCULATION OF AUTO DRILLING PUNCH MACHINE IN ROD MACHINNING PROCESS IN SHOWA INDONESIAN MANUFACTURING )ud [O] . Arif Hudaya, Aris Noviyanto, Ariyadi Sukoraharjo, 2008
• 6. Deep Sea Drilling Project. Drill String,Drill Pipe, Bumper Subs,Drill Collars,Coring Equipment. [R] . sims,darrell l. wiley, t. j. jr 1972

• 1. Projects "Technology for Manufacturing Environmentally Friendly Type Aromatic Hydrocarbon Rubber Filling Oil" and "Technology for Manufacturing Environmentally Friendly Type Rubber Filling Oil from Intermediate Base Lube Oil Extract" Passed Appraisal and A [J] . . 中国炼油与石油化工：英文版 . 2012,第1期
• 2. Daqing Oilfield Liquid Phase Underbalanced Drilling Improving Drilling Speed Evaluation Method [J] . Shibin Li ,Penghao Wang ,Ligang Zhang . 矿物质和材料特性和工程（英文） . 2015,第1期
• 3. Effect of Tillage and Planting Methods on the Soil Properties, Grain Drill Performance, and Wheat Yield [J] . Sadegh Afzalinia ,Ali Khosravani ,Arjang Javadi . 农业科学与技术：A . 2012,第004期
• 4. Inspecting the Reservoir Characteristics of the Burgan Formation of Soroosh Oil Field Applying Rock Typing Methods in the Context of Geological Studies [J] . Davar Ebrahimi ,Abdolhossein Amini ,Elham Hajikazemi . 地质学期刊（英文） . 2017,第4期
• 5. 空心杆井筒电加热采油技术应用与实践 [C] . 熊小伟 ,王少亭 ,韩利宝 . 第十五届宁夏青年科学家论坛石化专题论坛 . 2019
• 6. 空心杆电伴热系统中集肤效应的有限元分析 [A] . 白哲 . 2021