scholarly journals Study on Properties of Cold-Sprayed Al-Zn Coating on S135 Drill Pipe Steel

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Dongli Lv ◽  
Tao Zhang ◽  
Feiyang Gong
Keyword(s):  
Bonding Strength ◽  
High Speed ◽  
Pipe Steel ◽  
Drill Pipe ◽  
Petroleum Industry ◽  
Al Content ◽  
Coating Surface ◽  
Powder Particles ◽  
S135 Drill Pipe Steel ◽  
Powder Content

With the gradual depletion of shallow resources, the petroleum industry is developing toward ultradeep wells and high-speed drillings, and the problems of corrosion and erosion failure of drill pipe materials are becoming more and more serious. On the basis of not destroying the excellent mechanical properties of S135 drill pipe steel, three kinds of coatings, 20% Al-80% Zn, 30% Al-70% Zn, and 40% Al-60% Zn, are cold sprayed on S135 steel. The morphology of the coating is observed, and the bonding strength, porosity, hardness, and corrosion resistance of the coating are tested. Results show that the bonding mechanism between the powder particles and the substrate of the three coatings is mainly mechanical occlusion. From the substrate to the coating surface, the hardness value decreases gradually. With the increase of Al powder content, coating bonding strength increases, coating becomes more compact, and porosity decreases. Corrosion test results show that three coatings can protect the substrate. The density of corrosion products on the coating surface increased with the increase of the Al content. Corrosion potential of the three coatings is lower than that of the substrate, and the corrosion rate of the three coatings is lower than that of the substrate.

Influence of H2S Corrosion on Rotating Bending Fatigue Properties of S135 Drill Pipe Steel

2017 ◽  
Vol 71 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Bensheng Huang ◽  
Jiang Yang ◽  
Hui Zhang ◽  
Ge Liu ◽  
Yongbin Chen ◽  
...  
Keyword(s):  
Pipe Steel ◽  
Drill Pipe ◽  
Fatigue Properties ◽  
Bending Fatigue ◽  
H2s Corrosion ◽  
Rotating Bending Fatigue ◽  
Rotating Bending ◽  
S135 Drill Pipe Steel

Investigations of Fatigue Performance of S135 Drill Pipe Steel under Uniaxial Loading

2013 ◽  
Vol 716 ◽  
pp. 418-422 ◽  
Author(s):  
She Ji Luo ◽  
Rong Wang ◽  
Kang Zhao
Keyword(s):  
Regression Analysis ◽  
Fatigue Life ◽  
Linear Correlation ◽  
Pipe Steel ◽  
Drill Pipe ◽  
Uniaxial Loading ◽  
Analysis Method ◽  
Compression Loading ◽  
Cracks Propagation ◽  
S135 Drill Pipe Steel

The fatigue life of S135 drill pipe steel was investigated by means of tension-compression loading and torsion loading under uniaxial loading during the fatigue test. The quantitative formulas of fatigue life were obtained by regression analysis method, and the fatigue fracture mechanism was analyzed. The results show that a linear correlation was found between fatigue life and effective stress in the double logarithmic plots. Cracks initiated from the specimens surfaces under tension-compression loading as well as torsion loading. For the tension-compression fatigue and the torsion fatigue specimens, the main characteristics for cracks propagation were striations and sheares ripple marks, respectively.

scholarly journals COLD-SPRAYED Al-COMPOSITE COATINGS ON S135 DRILL-PIPE STEEL

2021 ◽  
Vol 55 (3) ◽  
pp. 337-345
Author(s):  
Dongli Lv ◽  
Kai Yang
Keyword(s):  
Mechanical Properties ◽  
Friction Coefficient ◽  
Corrosion Rate ◽  
Surface Morphology ◽  
Corrosion Behavior ◽  
Pipe Steel ◽  
Composite Coatings ◽  
Drill Pipe ◽  
Al Composite ◽  
S135 Drill Pipe Steel

Nine kinds of Al-composite coatings were cold sprayed on the S135 steel. The mechanical properties and microstructures of the coatings were analyzed and the corrosion behavior of the coatings was studied. The surface morphology of the coatings was observed. The porosity of the nine coatings was less than 1.52 %. A proper increase in the Zn powder could reduce the porosity. The thickness of a coating could be increased with an increase in Al2O3 and Zn. The hardness of a coating increased obviously after adding Al2O3. The friction coefficient of a coating decreased with the increase in Zn and Al2O3. The corrosion rate of the coatings decreased with an increase in Al and Al2O3.

Research on the fatigue properties of S135 drill pipe steel under a variety of conditions

2019 ◽  
Vol 6 (10) ◽  
pp. 1065f4 ◽  
Author(s):  
Bensheng Huang ◽  
Chunyan Ju ◽  
Jingli Tang ◽  
Yongbin Chen ◽  
Guangwen Li
Keyword(s):  
Pipe Steel ◽  
Drill Pipe ◽  
Fatigue Properties ◽  
S135 Drill Pipe Steel

Experimental study of hydrodynamic effects in the inverse water hydrocarbon emulsions flow in microchannels

2016 ◽  
Vol 11 (1) ◽  
pp. 30-37 ◽  
Author(s):  
A.A. Rakhimov ◽  
A.T. Akhmetov
Keyword(s):  
High Speed ◽  
Petroleum Industry ◽  
Chemical Compounds ◽  
High Viscosity ◽  
Blocking Effect ◽  
High Speed Photography ◽  
Simple Chemical ◽  
Reported Study ◽  
Dynamic Blocking ◽  
Hydrodynamic Effects

The paper presents results of hydrodynamic and rheological studies of the inverse water hydrocarbon emulsions. The success of the application of invert emulsions in the petroleum industry due, along with the high viscosity of the emulsion, greatly exceeding the viscosity of the carrier phase, the dynamic blocking effect, which consists in the fact that the rate of flow of emulsions in capillary structures and cracks falls with time to 3-4 orders, despite the permanent pressure drop. The reported study shows an increase in viscosity with increasing concentration or dispersion of emulsion. The increase in dispersion of w/o emulsion leads to an acceleration of the onset of dynamic blocking. The use of microfluidic devices, is made by soft photolithography, along with high-speed photography (10,000 frames/s), allowed us to see in the blocking condition the deformation of the microdroplets of water in inverse emulsion prepared from simple chemical compounds.

Experimental Study on Impact of Production Process Parameters on Rubber Asphalt Performance

2012 ◽  
Vol 204-208 ◽  
pp. 3629-3633 ◽  
Author(s):  
Wei Hou
Keyword(s):  
Production Process ◽  
High Speed ◽  
Mixing Time ◽  
Rubber Powder ◽  
The Road ◽  
Molding Method ◽  
Production Temperature ◽  
Mixing Method ◽  
Asphalt Performance ◽  
Powder Content

In order to better master the production process and the road performance of rubber asphalt, the paper studied the influence law of mixing method, mixing temperature, mixing time and rubber powder content on the performance of rubber asphalt. The results show that all the indexes except the viscosity of rubber asphalt has little change with different mixing methods, and the rubber asphalt has the best performance under the high-speed stirring molding method but the worst performance under the high-speed shearing molding method. Meanwhile, the performance of rubber asphalt change visibly with different mixing temperatures, on which the excessively high or low production temperature has negative significance, so the optimal production temperature would be recommended as 180~200°C. Furthermore, the mixing time and the rubber powder content are the two critical factors which may greatly affect the performance of rubber asphalt, followed by the mixing temperature and the mixing method.

Study on Bonding Properties of Copper and Aluminum in Nano Scale Using Molecular Dynamics Simulation

2012 ◽  
Vol 152-154 ◽  
pp. 183-187 ◽  
Author(s):  
Quang Cherng Hsu ◽  
Yen Yu Cheng ◽  
Bao Hsin Liu
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Bonding Strength ◽  
High Speed ◽  
Tensile Force ◽  
Pure Aluminum ◽  
Pure Copper ◽  
Dynamics Simulation ◽  
Low Speed ◽  
Speed Condition

According to MD simulation results, pressing depth between two bonding materials will affect bonding strength. Alloy material (Al0.9Cu0.1) had void defect phenomenon in low bonding speed condition because the increasing chance of atom migration which will result in low bonding strength. High tensile speed causes material fracture phenomena happen earlier than low speed. Material stress in low speed is smaller than in high speed. Fracture morphology of material is different in different tensile speed. In low speed condition, material can be stretched thinner than in high speed condition. Material in high temperature has greater kinetic energy than low temperature; therefore, material in high temperature has better formability and behaves larger tensile strain than low temperature. For pure aluminum, when temperature raises to 900K which is close to melting point (933K), its crystal structure is no longer belongs to F.C.C. structure, so bonding strength is weaker than low temperature. Large size material has larger contact area than small size material; therefore, the tensile force and tensile strength of the former are larger than the latter. The order of bonding strength for these three materials is: binary alloy > pure copper > pure aluminum.

scholarly journals Study on mechanical properties of titanium alloy drill pipe and application technology

2021 ◽  
Vol 261 ◽  
pp. 02021
Author(s):  
Xiaoyong Yang ◽  
Shichun Chen ◽  
Qiang Feng ◽  
Wenhua Zhang ◽  
Yue Wang
Keyword(s):  
Titanium Alloy ◽  
Oil And Gas ◽  
Drill Pipe ◽  
Petroleum Industry ◽  
Drill String ◽  
Curvature Radius ◽  
Outer Diameter ◽  
Gas Field ◽  
Steel Drill ◽  
Buildup Rate

With the increasing intensity of oil and gas field exploration and development, oil and gas wells are also drilling into deeper and more complex formations. Conventional steel drilling tools can no longer meet the requirements of ultra-deep, high-temperature and high-pressure wells. The paper first analyzes the advantages of titanium alloy drill pipe based on basic performance of titanium alloy drill pipe. The experimental results show that the basic properties of titanium alloy drill pipes meet the operating standards of the petroleum industry. Then the buckling performance of titanium alloy drill pipe and steel drill pipe is compared, the calculation results show that the buckling performance of titanium alloy drill tools is slightly lower than that of steel drill tools. Secondly, the maximum allowable buildup rate of titanium alloy drill pipe and steel drill tool is studied. The research shows that under the same condition of the drill pipe outer diameter, titanium alloy drill pipe can be used for a smaller curvature radius and greater buildup rate. This advantage of titanium alloy drill pipe makes it more suitable for short radius and ultra-short radius wells. Finally, taking a shale gas horizontal well as an example, with the goal of reducing drill string friction and ensuring drill string stability, a comparative study on the application of titanium alloy drill pipe and steel drill pipe is carried out. The results show that titanium alloy drill pipe has a wider application in the field, and is suitable for operations under various complex working conditions.

High-Speed Wired Drill Pipe and its Corresponding Manufacture & Test Technology Research

2021 ◽  
Author(s):  
Haochen Han ◽  
Yong Zhang ◽  
Jia Chen ◽  
Qi Sun ◽  
Zhimeng Fang ◽  
...  
Keyword(s):  
Mass Production ◽  
Manufacturing Process ◽  
High Speed ◽  
Transmission Rate ◽  
Drill Pipe ◽  
Pass Rate ◽  
Series System ◽  
Validation Test ◽  
Test Technology ◽  
Drill Pipes

Abstract High-speed wired drill pipe and its corresponding communication technology not only can achieve high-speed transmission rate and high-capacity, but also can realize real-time monitoring and dual-way communication in whole section, which can prevent downhole problems effectively. As a series system, the homogeneity and robustness of these wired drill pipes are crucial. This paper focuses on how to overcome the difficulty in manufacturing process of information drill pipe and complete the validation test. In order to guarantee the quality of information drill pipe and satisfy the technological requirements of mass production, we optimize the manufacturing process and put forward reasonable test techniques. The optimizations of manufacturing process include the analysis on constant tension of pressure pipe, quantitative cutting pipe and perforation in pipe nozzle. The testing techniques includes magnetic coupling coil impedance test, high pressure test, communication performance test of both single pipe and series system. The test result can be judged and evaluated by the attenuation value of the signal attenuation test and the signal reflection waveform as well as sealing reliability. With the help of the optimization of the manufacturing process and the application of new tooling, the quality and robustness of information drill pipe is improved obviously. Pass rate in primary assembly is increased from 70% to 92%. After the second assembly, pass rate can be increased to 99.5%. Besides, the work efficiency is greatly improved and the process requirements of mass production are satisfied. The validation test can screen out the drill pipe with poor quality and performance effectively thus to improve the reliability of the whole system. By means of the improvement of manufacturing and the validation test, the comprehensive pass rate of information drill pipes is increased from 84% to 95%. During three field tests in Jilin and Daqing Oilfield, the information drill pipes functioned well and accomplished all the test tasks successfully. High-speed wired drill pipe can improve the downhole data transmission on a large margin. The theorical transmission rate can be up to 100 kbps, 10,000 times as much as the traditional mud impulse telemetry. The manufacturing optimization and test technology can guarantee the performance and realize downhole data highway.

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