نتایج جستجو برای: drilling simulator

تعداد نتایج: 43659  

Journal: :IOP Conference Series: Earth and Environmental Science 2020

2012
LEILA ISMAIL

We develop and implement a ring-based parallel 3-D oil-phase homogeneous isotropic reservoir simulator and study its performance in terms of speedup as a function of problem size. The ring-based approach is shown to result in significant improvement in speedup as the problem size increases. This improvement stems from the reduction in communication costs inherent in a ring-based approach. The s...

Journal: :Mathematical and Computer Modelling 2005
Tasawar Hayat A. H. Kara Ebrahim Momoniat

K e y w o r d s F o u r t h g r a d e fluid, Unsteady flow, Lie symmetries. 1. I N T R O D U C T I O N In recent years, considerable efforts have been usefully devoted to the s tudy of flow of nonNewton ian fluids. This is ma in ly due to their m a n y appl icat ions in pe t ro leum drilling, manufactu r ing of food and paper, and other similar activities. A vast a m o u n t of l i te ra ture i...

2008
Anol Bhattacherjee Christopher J. Davis Neset Hikmet Varol O. Kayhan

This paper examines the diverse nature of user reactions to information technology (IT) within the social-historical context of its organizational use. Employing activity theory as a conceptual framework, we conduct an interpretive analysis of physicians work, perceptions, and IT usage experience at a large community hospital to understand why some of these physicians were favorably disposed to...

Journal: :مجله علوم اعصاب شفای خاتم 0
ali nahvi k.n. toosi university of technology, virtual reality laboratory, tehran, iran soheil saadat sina trauma and surgery research center and tehran university of medical sciences, tehran, iran mehdi shafieian department of biomedical engineering, amirkabir university of technology, tehran, iran masoud tabibi amirkabir university of technology and civil and environmental eng. faculty, transport and traffic eng. group, iranian taxi :::::union::::: (irtu), tehran, iran

in our country, student transportations’ security and driving accidents statistics for students is one of the major concerns for relevant organizations such as educational organization. in current year, a system, was named sepand, was formed in city taxi driver :::::::union::::::: by educational organization, naja traffic and city taxi driver :::::::union:::::::. in this systems’ plan, basis on...

2003
G. Sementsov I. Chygur

The process of borehole drilling is a nonlinear and many dimensional process. During drilling it is possible occurrence of some complications (for example transition of drilling tool in layer with anomalous pressure). New method of identification of rock layers with anomalous pressure was proposed and tested on real plant data.

2003
Stephen J Cooper

This report concludes that there is great scope for expansion of the simulation facilities so far developed. In particular, it is recognised that training and competency testing of teams of personnel such as the banksman and supply ship's master could be integrated into crane simulator training scenarios and that this approach offers great potential for reducing the number of crane related acci...

Journal: :Science 1981
C A Hall C J Cleveland

For the past three decades the quantity of petroleum (both oil and oil plus gas) found per foot of drilling effort in the United States for any given year can be expressed as a secular decrease of about 2 percent per year combined with an inverse function of drilling effort for that year. Extrapolation of energy costs and gains from petroleum drilling and extraction indicates that drilling for ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2013
mohammad soleymani mohammad reza kamali yazdan saeedabadian

this investigation presents the effect of various parameters on foam stability and its rheological properties. the underlying idea of this experiment is generating of drilling foam with uniform bubbles. the main problem of foam using is controlling its stability during field application. the most important parameters which cause instability in foam are gravity drainage, gas diffusion and bubble...

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