Results 211 to 220 of about 41,999 (282)

ROP margin improvement options for CANDU reactors

open access: closedAnnals of Nuclear Energy, 2015
Abstract Over the past few years, Candu Energy Inc. (a wholly owned subsidiary of SNC-Lavalin Inc., which acquired the assets of Atomic Energy of Canada Limited’s Commercial Reactor Division) has been continuously developing and evaluating various options to improve the regional overpower protection (ROP) margin in aged CANDU 600 MW (CANDU 6 ...
Doddy Kastanya   +3 more
exaly   +3 more sources

Increased ROP of Jet Drilling From Improvement of the Bottomhole Flow Field

open access: closedSPE Drilling Engineering, 1988
Summary With the wide application of jet drilling, continuous research has been carried out to utilize fully the bit hydraulic power at the hole bottom. This paper describes an experimental study of fluid-flow direction in the flow field and discusses its application. The undesirable flow patterns of vortex, backflow, and stagnation were
Rongqing Liao
openalex   +2 more sources

The Use of MPD and an Unweighted Fluid System for Drilling ROP Improvement

open access: closedIADC/SPE Managed Pressure Drilling & Underbalanced Operations, 2007
Abstract A drilling technique that is increasingly being used for performance drilling purposes is Managed Pressure Drilling (MPD). MPD is typically considered a tool to mitigate drilling hazards, and reduce the resulting non-productive time due to encountering lost circulation zones, tight pore pressure/fracture gradient margins, and ...
J. K. Foster, Adrian Steiner
openalex   +2 more sources

Retinopathy of Prematurity (ROP) in a Developing Economy with Improving Health Care

Current Ophthalmology Reports, 2017
The purpose of this study is to highlight the changing pattern of retinopathy of prematurity (ROP) incidence with improvement in economy and health care in Africa, pointing out the challenges and recommendations for sustainable, cost-effective screening and management. ROP was initially thought to be rare in some parts of Africa.
Tunji S Oluleye
exaly   +2 more sources

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