Results 11 to 20 of about 449,272 (181)
Research on Displacement Calculation of Dynamometer Card Based on Kaiman Filter and Discrete Numerical Integration [PDF]
MATEC Web of Conferences, 2017 In order to calculate the dynamometer card of oil well using acceleration sensor, the algorithm which combined by Kalman filter and discrete numerical integration is proposed. It can be applied to calculate the displacement and precipitation displacement
Yan Nan, Shu Dai Jia
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Geofluids, 2020 Based on the informatization and intelligent construction of an oilfield, this paper proposes a new method for calculating inflow performance relationship in sucker rod pump wells, which solves the limitations of current IPR curve calculation method in ...
Ruichao Zhang +3 more
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MODELING OF DYNAMOMETER CARDS IN QUASISTEADY OPERATION MODES OF SUCKER ROD PUMPS
Известия высших учебных заведений: Нефть и газ, 2015 The article presents the dependences, permitting to calculate the fluid level in the annulus of the sucker rod pump (SRP) at step changing of the beam-pumping unit actions number and to simulate the SRP dynamometer cards .
V. D. Kovshov +2 more
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Prediction and Analysis of Polished Rod Dynamometer Card in Sucker Rod Pumping System with Wear [PDF]
Shock and Vibration, 2018 In 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.
Dongyu Wang, Hongzhao Liu
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Shiyou jixieDeep learning methods play an important role in the diagnosis of dynamometer card of beam pumping unit. However， in practical applications， dynamometer card samples of different fault types exhibit deficiencies in quantity， diversity and balance， which ...
Ye Zhewei Liu Zhang Liu Bing Jin Cun Zhou Yu
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Accelerated Anthropometric Ageing Links Loss of Physical Function and Lower Extremity Body Mass. [PDF]
J Cachexia Sarcopenia MuscleABSTRACT Background Ageing is associated with anthropometric changes that have been linked to functional limitations and disease risk. However, previous work is limited to a few anthropometric measures, such as body mass index or waist‐to‐height ratio.
Tian Q +6 more
europepmc +2 more sources
An Engineered Glove for the Objective Assessment of Hand Dexterity in Patients With Systemic Sclerosis. [PDF]
ACR Open RheumatolObjective Hand disability is a major musculoskeletal functional impairment in systemic sclerosis (SSc), but its objective assessment remains challenging. The validated Hand Test System (HTS) engineered glove has provided quantitative dexterity data in rheumatic diseases.
Sulli A +10 more
europepmc +2 more sources
Credit card fraud and detection techniques: a review [PDF]
, 2009 Fraud is one of the major ethical issues in the credit card industry. The main aims are, firstly, to identify the different types of credit card fraud, and, secondly, to review alternative techniques that have been used in fraud detection.
Abdou, Hussein +2 more
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TWO-LEVEL METHOD FOR DIAGNOSING TECHNICAL CONDITION OF SUCKER-ROD PUMPING UNITS
Известия Томского политехнического университета: Инжиниринг георесурсов, 2020 Relevance. A significant number of the largest oil fields in Russia are in the final stages of development, characterized by a decrease in production volumes, increase in the share of complicated wells.
Ramil N. Bakhtizin +3 more
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SUCKER ROD PUMPING SYSTEM: CHALLENGES TO DEVELOP DIAGNOSTIC SYSTEM AND ROLE OF DYNAMIC SIMULATOR
Известия Томского политехнического университета: Инжиниринг георесурсов, 2022 Relevance. Production benefits and efficiency of sucker rod pump installations is highly dependent on the accuracy of monitoring and fault diagnosis system used.
Anatolii M. Ziuzev, Samuel Isaac Tecle
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