Petrochemical industry is one of the key industry areas where Internet of Things (IoTs) and big data analytics could be widely applied to support smarter production and maintenance. In oil and gas exploitation, sucker-rod pumping systems are used in approximately 90 percent of artificially lifted wells. An automatic pipeline is crucial for real-time condition monitoring and fault detection of t...

By Surgn.-Capt. P. IIeiiiu, m.d., f.r.s.e., d.p.h. Camb., Fellow, Santy. Inst., Fellow of British Inst., Pub. Health, Health Officer, Chudderghat Municipality. 1 iieiie are three varieties ot wells, shallow or superficial, deep and artesian. The last mentioned may be considered a variety of deep well, and we will dispose of it with a few words, for the reason that artesian wells have, up to dat...

There are two reservoirs with different temperature and permeability in the Kakkonda hydrothermal system. The shallow reservoir is permeable and 230 to 2 6 0 T , while the deep reservoir is less permeable and 350 to 3 6 0 T . However, they are hydraulically connected each other. Recent drilling of deep wells revealed existence of PreTertiary formation below Tertiary formations and neogranitic p...

Protection of ground water for present and future use requires monitoring and understanding of the mechanisms controlling long-term quality of ground water. In this study, spatial and temporal trends in concentrations of nitrate and pesticides in ground water in the eastern San Joaquin Valley, California, were evaluated to determine the long-term effects of agricultural and urban development on...

Until recently, few water utilities or researchers were aware of possible virus presence in deep aquifers and wells. During 2008 and 2009 we collected a time series of virus samples from six deep municipal water-supply wells. The wells range in depth from approximately 220 to 300 m and draw water from a sandstone aquifer. Three of these wells draw water from beneath a regional aquitard, and thr...

OBJECTIVE To monitor the effectiveness of deep community wells in reducing exposure to elevated levels of arsenic in groundwater pumped from shallower aquifers. METHODS Six community wells ranging in depth from 60 m to 140 m were installed in villages where very few of the wells already present produced safe water. By means of flow meters and interviews with villagers carrying water from the ...

OBJECTIVE To determine whether the installation of deep tube wells to reduce exposure to groundwater arsenic in rural Bangladesh had an effect on the incidence of childhood diarrhoeal disease. METHODS Episodes of diarrhoeal disease in children aged under 5 years that occurred on one specified day each month between 2005 and 2006 were reported to community health workers for six rural villages...