Results 21 to 30 of about 1,801,142 (276)
Journal of Petroleum Exploration and Production Technology, 2021 The understanding of how basin margin sediment wedge builds out causes shelf-edge migration with time is approached based on shelf-edge trajectory pattern analysis using a high-resolution mega-merge seismic data from the eastern Niger Delta, Nigeria. The
Okwudiri A. Anyiam +2 more
doaj +1 more source
Tribology Online, 2016 Fuel economy is a major challenge for the automotive industry. A key way to improve lubricant fuel efficiency is by using polymers as viscosity index improvers to maximise the viscosity index of the lubricants.
Kumiko Kamata +4 more
doaj +1 more source
Real-time bit wear prediction using mud logger data with mathematical approaches
Journal of Petroleum Exploration and Production Technology, 2019 Nowadays, the success of drilling operations has become more sensitive to cost control. As one of the most effective cost reductions is the elimination of extra trips, real-time bit wear prediction has been a challenge for appropriate decision-making in ...
Hongpeng Yang +2 more
doaj +1 more source
Rock Physical Controls on Production-induced Compaction in the Groningen Field
Scientific Reports, 2018 Advancing production from the Groningen gas field to full depletion generates substantial, field-scale deformation, and surface subsidence. Quantifying associated risk requires understanding physical processes in the subsurface, in particular those ...
Sander Hol +4 more
doaj +1 more source
Morphometric Analysis of Dinosaur Tracks from Southwest Arkansas [PDF]
, 2013 Dinosaur trackways were discovered in Cretaceous De Queen Limestone strata in Howard County, Arkansas, in June 2011. Multiple trackways with variably sized tridactyl tracks were exposed in a commercial quarry, suggesting multiple theropod species or ...
Boss, Stephen K., Shell, R.
core +3 more sources
An extrapolation method for shell model calculations [PDF]
, 2002 We propose a new shell model method, combining the Lanczos digonalization and extrapolation method. This method can give accurate shell model energy from a series of shell model calculations with various truncation spaces, in a well-controlled manner ...
A. Poves +26 more
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Multi-Shell Hollow Nanogels with Responsive Shell Permeability [PDF]
Scientific Reports, 2016 Published by Nature Publishing Group ...
Schmid, Andreas J. +7 more
openaire +5 more sources
, 2004 We investigate in detail the special case of an infinitely thin static cylindrical shell composed of counter-rotating photons on circular geodetical paths separating two distinct parts of Minkowski spacetimes--one inside and the other outside the shell ...
Bi?ák J +8 more
core +1 more source
, 2011 Gaussian measures of Gibbsian type are associated with some shell models of 3D turbulence; they are constructed by means of the energy, a conserved quantity for the 3D inviscid and unforced shell model.
Bessaih, Hakima, Ferrario, Benedetta
core +1 more source
Precision Synthesis of Silicon Nanowires with Crystalline Core and Amorphous Shell [PDF]
, 2013 A synthetic route to crystalline silicon (Si) nanowires with an amorphous Si shell is reported. Trisilane (Si3H8) and Sn(HMDS)(2) are decomposed in supercritical toluene at 450 degrees C.
Bogart, Timothy D. +2 more
core +1 more source