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industrie mécanique - iate.europa.eu
Copy of dunn super-safety sucker rod elevator, southern california, 1929Photograph of advertisement for Dunn Super-Safety sucker rod elevator, Southern California, 1929....
général - core.ac.uk - PDF: digitallibrary.usc.edu
Analysis of temperature field based on hollow sucker rod hot flushing technology... The application of hollow sucker rod hot flushing technology can avoid fluid pouring back into the formation, and the wells can keep production....
Study on equivalent viscous damping coefficient of sucker rod based on the principle of equal friction lossEquivalent viscous damping coefficient is an important parameter of wave equation for sucker rod string....
 PDF: doaj.org
Prediction and analysis of polished rod dynamometer card in sucker rod pumping system with wearIn the oil production process, the wear of friction pairs in sucker rod pumping installations will increase over time, which leads to the failure of the sucker rod pumping system....
 PDF: doaj.org
Copy retouched sucker rod slip, southern california, 1929Photograph of drawing of sucker rod slip, Southern California, 1929....
industrie mécanique - iate.europa.eu
Concentrations of indoor and soil radon in lithuania/radonas grunto ore ir pataleose lietuvoje... The measurements have been performed directly without sampling and sample preparation by digging the detector of Exploranium and pumping rod of MARKUS 10 in the investigated soil....
général - core.ac.uk - PDF: journals.vgtu.lt
Design and performance analysis of a coal bed gas drainage machine based on incomplete non-circular gears... First of all, according to the working conditions of the pump and use requirements, a scheme is established whereby the one-way rotary motion of the motor is changed into reciprocating motion so that it could drive the oil pumping rod to achieve the upper and lower mining....
 PDF: doaj.org
Velocity profile of viscous-elastic fluid in eccentric annulus with the internal rod moving axially... Using lower-convected Maxwell constitutive model, the control equation of the steady flow of viscous-elastic fluid in the eccentric annulus with inner rod moving axially in the bipolar coordinates system is established, and discreted by control-volume method, the velocity profile is solved by ADI methods, which lays theory basis for further analyzing the stress field and the reason of pumping rod eccentric wear....

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