Results 91 to 100 of about 6,866 (241)
In order to further control the equivalent circulating density,a new type of annular pres-sure-reducing downhole tool for high temperature and high pressure wells-liquid-absorbing ECD tool is designed.Through this tool,the bottom hole pressure of the equivalent circulating drilling fluid can be close to its hydrostatic pres-sure,therebyachieving a ...
Meipeng Ren +5 more
openaire +1 more source
Enhanced Urea Oxidation Reaction by Mn‐Doped Nickel Hydroxide From Wastewater
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Mn incorporation modifies the hydroxide structure and modulates the electronic properties of the Ni centers, promoting the formation of catalytically active NiOOH species. Mn dopants induce a favorable electronic effect but do not directly participate in the UOR mechanism, enhancing the overall urea oxidation rate and resulting in increased hydrogen ...
Filippo Bano +8 more
wiley +1 more source
Depressurization Dynamic Modeling and Effect on Flare Flame Distortion
, 2016 The aim of equipment depressurization in an upset operation is to maintain the internal pressure of the vessels and piping below the rupture pressure, as the material ultimate tensile strength decreases with temperature tolerance beyond the acceptable ...
Shafaghat, Ali
core +1 more source
CyTA - Journal of Food, 2018 The effect of high-pressure carbon dioxide processing on inactivation of aerobic mesophilic bacteria and Escherichia coli ATCC 25922 inoculated in human milk was investigated. The effect of the ratio between sample mass and CO2 (1:0.2; 1:0.6 and 1:1 m/m);
Ana Claudia Berenhauser +6 more
doaj +1 more source
Electron, EarlyView.This study aims to introduce a novel‐designed structure of the colloidal aphron microbubbles reinforced by incorporating hydrophobic aerographene microparticles onto the hydrophobic outer shell. This results in the formation of a robust composite film and armored microbubble that offers exceptional ultrastability under elevated pressures of up to 400 ...
Mohammad Hossein Akhlaghi +4 more
wiley +1 more source
Biomass‐derived hydrochars as eco‐friendly adsorbents for wastewater treatment applications
Environmental Progress &Sustainable Energy, EarlyView.Abstract Emerging organic pollutants (EOPs), such as diethyl phthalate (DEP), bisphenol A (BPA), and methylene blue (MB), are only partially removed in conventional wastewater treatment plants. This study assesses hydrochars produced by hydrothermal carbonization (HTC) of spruce bark (SB), vine shoots (VSs), and wheat straw (WSs) for removing three ...
Emanuel Gheorghita Armanu +6 more
wiley +1 more source
, 2018 The depressurization method is one of the most promising methods for the exploitation of hydrate reservoirs and has been conducted in several field tests.
Cai, Jing +6 more
core +1 more source
Energies, 2015 The main purpose of this study is to investigate the production behaviors of gas hydrate at site DK-2 in the Qilian Mountain permafrost using the novel five-spot well (5S) system by means of numerical simulation.
Yun-Pei Liang, Xiao-Sen Li, Bo Li
doaj +1 more source
Energy Science &Engineering, EarlyView.This paper presents a hydrate pressure core processing device integrated with a high‐precision active control system to perform nondestructive transfer, cutting, and analysis. To address the limitations of slow dynamic response and high thermal inertia in traditional passive systems, a differentiated control scheme is implemented.
Liwen Nan +3 more
wiley +1 more source
Energies, 2016 Natural gas hydrate accumulations were confirmed in the Dongsha Area of the South China Sea by the Guangzhou Marine Geological Survey 2 (GMGS2) scientific drilling expedition in 2013. The drilling sites of GMGS2-01, -04, -05, -07, -08, -09, -11, -12, and
Yi Wang +4 more
doaj +1 more source