Results 31 to 40 of about 1,883,484 (166)

POWER-EFFICIENCY ANALYSIS OF OIL WELL SYSTEMS WITH SUCKER ROD PUMPING UNITS

Известия высших учебных заведений: Нефть и газ, 2015
The purpose of this paper is to analyze the power efficiency of oil well systems with sucker rod pumping units. For this study a chain-drive of HRC 80-6-02 type and a similar performance drive HRC 80-6-02 balancer pumping unit were selected. Based on the
A. M. Sagdatullin
doaj   +1 more source

Improving Pulping Performance as Well as Reducing Consumption and Increasing Efficiency via Microbial Consortium Pretreating Bamboo

Fermentation, 2023
The bio-refining process of bamboo is more challenging compared to wood due to its dense and stabilized complex polymer structure, as well as its abundance of degradation-resistant components. Consequently, the bio-refining of bamboo requires more energy
Chun Liu, Zhijian Li, Xiuqiong Guan, Yang Xu, Nan Huang, Kui Liu   +5 more
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Efficiency droop suppression of distance-engineered surface plasmon-coupled photoluminescence in GaN-based quantum well LEDs

AIP Advances, 2017
Ag coated microgroove with extreme large aspect-ratio of 500:1 was fabricated on p-GaN capping layer to investigate the coupling behavior between quantum wells and surface plasmon in highly spatial resolution.
Yufeng Li, Shuai Wang, Xilin Su, Weihan Tang, Qiang Li, Maofeng Guo, Ye Zhang, Minyan Zhang, Feng Yun, Xun Hou   +9 more
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LABORATORY RESEARCHES ON EFFICIENCY EVALUATION OF WELL SCREEN REGENERATION

Наука и техника, 2008
Results pertaining to efficiency evaluation of well screen regeneration using a combined impulse and reagent method is given in the paper. In order to ensure complete cleaning of screen fragment from sedimentation a gas and dynamic set without and with ...
V. V. Ivashechkin, A. M. Kondratovich, A. N. Sheiko, V. V. Gubin   +3 more
doaj  

Quantum wells for high-efficiency photovoltaics

SPIE Proceedings, 2016
Over the last couple of decades, there has been an intense research on strain balanced semiconductor quantum wells (QW) to increase the efficiency of multi-junction solar (MJ) solar cells grown monolithically on germanium. So far, the most successful application of QWs have required just to tailor a few tens of nanometers the absorption edge of a given
Alonso Alvarez, D, Ekins-Daukes, N
openaire   +2 more sources

Evaluation Device for Flushing Efficiency of Shale Gas Horizontal Well

Shiyou jixie, 2016
In order to quantitatively analyze the efficiency of flushing fluid on oil based filter cake,shortcomings of the existing technology are discussed,the design scheme for simulation factors is decided,the filter cake generation device and the flushing ...
Li Shekun, Zhou Zhanyun, Li Yan, Wang Xiuling   +3 more
doaj  

Efficiency droop in zincblende InGaN/GaN quantum wells

Nanoscale
Cubic zincblende InGaN/GaN quantum wells are free of the electric fields that reduce recombination efficiency in hexagonal wurtzite wells.
Dyer, D, Church, SA, Ahumada-Lazo, R, Kappers, MJ, Halsall, MP, Parkinson, P, Wallis, DJ, Oliver, RA, Binks, DJ   +8 more
openaire   +4 more sources

ARRANGEMENT OF WELLS OVERHAUL REPAIR OPERATION UNDER PRESENT-DAY CONDITIONS OF OIL AND GAS FIELDS DEVELOPMENT

Известия высших учебных заведений: Нефть и газ, 2015
The paper presents a method for arrangement the oil and gas wells overhaul repair with attraction of service companies and proves the effectiveness of the proposed scheme of jobs organization and gives a determination of well work-over services.
A. V. Kustyshev, Yu. V. Vaganov, V. A. Dolgushin   +2 more
doaj   +1 more source

Efficiency of Deposit Dissolution in Water Well Filters by Acid Reagents

Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2006
The paper considers some problems of efficient dissolution of contaminative deposits by acid reagents which are accumulated in the pores of gravelling and water well filters.Tests of reagents in terms of their corrosive effect on the elements of a well ...
V. V. Ivashechkin, A. N. Kondratavich, Е. A. Makarova   +2 more
doaj  

Response Surface Methodology for Modelling and Optimizing Efficiency in Deep Well Pumping Systems

Turkish Journal of Agriculture: Food Science and Technology
This study presents research on modelling the efficiency and flow rate of deep well pumping facilities using the response surface method, evaluating the models, and assessing optimization based on target flow rate.
Nuri Orhan, Murat Çavuşlar, Meki Solmaz, Muhammet Emre Erdem   +3 more
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