Results 121 to 130 of about 1,883,484 (166)

Well‐Field Management for Energy Efficiency

Journal of Hydraulic Engineering, 1991
Many municipalities rely on ground water for at least a portion of their water supplies. The ground water for a city usually is collected from an existing well field. A major component of the operational expense is pumping, which includes the vertical lifts and the head losses through the collection piping to the storage facility.
Billy J. Claborn, Ken A. Rainwater
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Extending Well Life and Securing Well Integrity Efficiently

ADIPEC
Abstract Well integrity is one of the most critical aspects during the life of every gas or oil well. Safety of production or drilling personnel cannot be neglected. To mitigate, damaged downhole equipment or well integrity needs to be monitored controlled, inspected and if necessary repaired or upgraded.
Noe Hurtado, Fernando Zapata, Ahmed Alzaabi, Mohamed BinKalban, Mohamed Karmstaji, Krzysztof. Roicki   +5 more
openaire   +1 more source

Well Efficiency and Skin Effect

Journal of the Irrigation and Drainage Division, 1973
The purpose of this paper is to present a technique for determining the skin effect using previously derived flow equations. This technique is applicable only to wells affected by losses due to laminar flow (both the “normal” losses and those in the damaged zone) and does not account for turbulent losses that may be present in large capacity wells ...
openaire   +1 more source

Well Abandonment Efficiency Improvement through Collaboration!

SPE Asia Pacific Oil & Gas Conference and Exhibition, 2020
Abstract The operator, rig contractor and services company formed a trilateral collaboration to plan the safe plug and abandonment of four onshore wells located in a densely populated region of Indonesia. These wells, located in scattered locations, posed a significant logistical challenge for project mobilization and moves between the ...
Ikenna Obodozie, Philip Blakeman, Brendan Knox, Aditya Hutama, Lutfy Firdaus   +4 more
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Increasing efficiency and well-being?

2023
Background: Socially assistive devices (care robots, companions, smart screen assistants) have been advocated as a promising tool in elderly care in Western healthcare systems. Ethical debates indicate various challenges. One of the most prevalent arguments in the debate is the double-benefit argument claiming that socially assistive devices may not ...
Haltaufderheide, Joschka (Dr.), Lucht, Annika, Strünck, Christoph (Prof. Dr.), Vollmann, Jochen (Prof. Dr. Dr.)   +3 more
openaire   +1 more source

Driving Efficiencies in Well Intervention Operations

IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition, 2018
Abstract Brunei offshore platforms are home to hundreds of maturing wells in need of ongoing interventions. Offshore operations in Brunei face several obstacles, (i.e., weather conditions, ageing platform facilities, limited lifting capability, and limited workspace), as well as tight work schedules that make the work challenging.
Yee Tzen Yong, Yusri Azizan, Azemi Leong, Yan Song, Rudzaifi Adizamri Abd Rani   +4 more
openaire   +1 more source

Efficiency of Partially Penetrating Wells

Groundwater, 1973
ABSTRACT A graphical solution is presented for the determination of total drawdown of partially penetrating wells. This simplified solution agrees with the more complicated exact solution and can be used to evaluate the efficiency of such wells.
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Photoluminescence efficiency in AlGaN quantum wells

Physica B: Condensed Matter, 2014
Abstract Photoluminescence spectroscopy of AlGaN/AlGaN multiple quantum wells under quasi-steady-state conditions in the temperature range from 8 to 300 K revealed a strong dependence of droop onset threshold on temperature that was explained by the influence of carrier delocalization.
G. Tamulaitis, J. Mickevičius, J. Jurkevičius, M.S. Shur, M. Shatalov, J. Yang, R. Gaska   +6 more
openaire   +1 more source

Well Diversified Efficient Portfolios [PDF]

, 2005
Investors scarcely use mean-variance optimization when deciding on their actual portfolios. One of the main reasons they give is that efficient portfolios are systematically concentrated in a few assets. This article shows that such an allocation is achieved when portfolio risk and return are seen as infinitely accurate magnitudes.
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Efficient Approximation of Well-Founded Justification and Well-Founded Domination

2013
Many native ASP solvers exploit unfounded sets to compute consequences of a logic program via some form of well-founded negation, but disregard its contrapositive, well-founded justification WFJ, due to computational cost. However, we demonstrate that this can hinder propagation of many relevant conditions such as reachability.
Christian Drescher, Toby Walsh
openaire   +1 more source