Fracture Analysis of a Grade HL Steel Sucker Rod Used in an Oilfield

2022 ◽  
Author(s):  
Mifeng Zhao ◽  
Xiangjuan Meng ◽  
Yan Long ◽  
Wei Fan ◽  
Anqing Fu ◽  
...  
Keyword(s):  
Fracture Analysis ◽  
Sucker Rod

The Analysis on Causes of Rupture for a Sucker Rod Made of 20CrMo Alloy

2011 ◽  
Vol 295-297 ◽  
pp. 626-630 ◽  
Author(s):  
Yong Jun Bian ◽  
Wei Shi ◽  
Jin Yue Lao ◽  
Jie Chen ◽  
Shu Ling Sun
Keyword(s):  
Stress Corrosion ◽  
Fracture Analysis ◽  
Composition Analysis ◽  
Metal Impurity ◽  
Metallographic Examination ◽  
Service Load ◽  
Sucker Rod ◽  
Chemical Composition Analysis ◽  
Corrosion Pits ◽  
Stress Fatigue

Multiple types of analysis and examinations are applied to analyze the causes of rupture for a sucker rod made of 20CrMo alloy. Based on the results from macro- and micro-fracture analysis, chemical composition analysis, mechanics test and metallographic examination, the generation of cracks can be attributed to the irregularity and impurity in the coating of sucker rod; the stress fatigue from pulling and pressing and the stress corrosion. There is severe banded segregation, non-metal impurity and un-dissolved ferrite in the interior of the rod, meanwhile the poor heat treatment causes the property differences between the surface and core structures of the rod, thus reduces the overall properties of fatigue- and corrosion-resistance. Stress corrosion makes pits from cracks; the expansion of such corrosion pits reduces the size of effective loading area; and the failure to endure service load due to the reduction of loading area finally causes sudden rupture of the rod.

Influence of the main design parameters of valve pairs on the efficiency of sucker-rod well pumps operation

2020 ◽  
pp. 7-16
Author(s):  
A.A. Sabirov ◽  
◽  
T.R. Dolov ◽  
V.N. Ivanovskiy ◽  
E.A. Orlova ◽  
...  
Keyword(s):  
Design Parameters ◽  
Main Design ◽  
Sucker Rod

Modeling of Sucker rod pump in CBM wells using QRod Simulator

2011 ◽  
Vol 3 (5) ◽  
pp. 274-276
Author(s):  
Siraj Bhatkar ◽  
◽  
Yusufuddin Nehri ◽  
Fahad Shaikh
Keyword(s):  
Sucker Rod ◽  
Sucker Rod Pump

Special-purpose downhole sucker rod pumps for directional and horizontal wells: results of pilot experiments in Tatneft

2019 ◽  
pp. 47-51
Author(s):  
K.V. Valovsky ◽  
◽  
G.Yu. Basos ◽  
V.M. Valovsky ◽  
A.V. Artyukhov ◽  
...  
Keyword(s):  
Horizontal Wells ◽  
Sucker Rod

Statistical fracture analysis of notched composites

1990 ◽  
Author(s):  
K. LIN ◽  
R. JOHNSON
Keyword(s):  
Fracture Analysis
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