Effective cuttings transport means a better hole cleaning in drilling operations, which can increase the rate of penetration (ROP), and avoids pipe sticking, higher drag and torque problems. This paper aimed to analyze cuttings transport efficiency affected by different blade shapes of stabilizers, which is often overlooked in drilling. For this purpose, Eulerian multiphase flow model was used ...

BACKGROUND During the past three decades in Bangladesh, millions of tubewells have been installed to reduce the prevalence of diarrheal disease. This study evaluates the impacts of tubewell access and tubewell depth on childhood diarrhea in rural Bangladesh. METHODS A total of 59,796 cases of diarrhea in children under 5 were recorded in 142 villages of Matlab, Bangladesh during monthly commu...

Larger than life, surrounded by an aura of guarded omniscience, and armored with a genial affable style, Herman B Wells reinvented Indiana University as a significant participant among the nation's public research universities. The story of this twentyfive-year transformation has been ably told in the third and final volume of Thomas D. Clark's fine institutional history, Indiana University: Mi...

Geological, geophysical and hydrological surveys were performed in an area between Lecce to the North and Otranto to the South on the Lower Adriatic coast of Italy in order to verify the “state of health” of the ground water in the deep aquifer, which is characterised by Mesozoic carbonatic formations and is permeable due to fracturing and karstic phenomena. This area was chosen because it is h...

Abstract Hydrated bentonite is considered an alternative subsurface sealing/plugging material for deep geo-energy wells. However, the knowledge related to this application and corresponding properties of still lacking. This includes mechanical at interface plugs with adjacent materials (surrounding rock or casing steel) stability under downhole in-situ conditions. In work, we performed experime...