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GAS PRESSURE POTENTIAL [9 records]

Record 1 2020-08-19

English

Subject field(s)
  • Hydrology and Hydrography
  • Oceanography
CONT

Offshore oil and gas exploration is sure to put more [ecological] pressure on offshore waters. Deep-sea mining is another potential threat...

Key term(s)
  • off-shore waters

French

Domaine(s)
  • Hydrologie et hydrographie
  • Océanographie
CONT

Le capelan [...] passe la majeure partie de sa vie adulte dans les eaux du large.

Spanish

Campo(s) temático(s)
  • Hidrología e hidrografía
  • Oceanografía
Save record 1

Record 2 2017-01-12

English

Subject field(s)
  • Oil Production
DEF

Any method by which an essentially depleted reservoir is restored to a producing status by the injection of liquids or gases into the reservoir from extraneous sources. This effects restoration of reservoir energy, which moves the formerly unrecoverable secondary reserves through the reservoir to the wellbore.

CONT

Secondary recovery of oil. When a large part of the crude oil cannot be recovered simply by allowing the original reservoir pressure to furnish the driving energy, a method for supplying extra energy must be found. Usually, an injected fluid such as water or gas replaces the produced oil and thus maintains the reservoir pressure. When this procedure substantially increases the potential production of oil, it is called secondary recovery.

CONT

Secondary Recovery. Secondary recovery methods are used to obtain additional oil from wells that have ceased to produce at an economical rate.

CONT

Water drive or flooding is a secondary recovery method that is used extensively to force the oil to flow to the producing wells.

OBS

secondary recovery: term standardized by ISO.

French

Domaine(s)
  • Production pétrolière
DEF

Procédé mis en œuvre après la phase de production primaire par décompression du gisement. (Il s'agit généralement d'injection d'eau et de gaz.)

DEF

[...] phase d'extraction du pétrole de ses gisements naturels qui met en œuvre des moyens énergétiques supplémentaires, soit après épuisement des énergies naturelles, soit en complément de l'énergie naturelle dès le début de l'exploitation.

OBS

récupération secondaire : terme normalisé par l'ISO.

Spanish

Campo(s) temático(s)
  • Producción petrolera
Save record 2

Record 3 2012-01-11

English

Subject field(s)
  • Mining Dangers and Mine Safety
CONT

Offshore oil and gas exploration is sure to put more [ecological] pressure on offshore waters. Deep-sea mining is another potential threat and rich mineral deposits off the B. C. coast could be among the first exploited.

French

Domaine(s)
  • Exploitation minière (dangers et sécurité)
OBS

Sur le modèle de «pêche de haute mer», LGRAN Vol. 8 p. 7928.

Spanish

Save record 3

Record 4 2004-11-26

English

Subject field(s)
  • Meteorological Forecasting, Data Measurement and Analysis
  • Thermodynamics
DEF

Thermodynamic diagram whose Cartesian coordinates are potential temperature and px(p is the pressure and x is equal to R/Cp=0. 2857, where R is the gas constant for air and Cp, the specific heat of air at constant pressure).

Key term(s)
  • diagram of Werenskiold

French

Domaine(s)
  • Prévisions météorologiques et mesure et analyse des données
  • Thermodynamique
DEF

Diagramme thermodynamique ayant pour coordonnées cartésiennes la température potentielle et px (p est la pression et x égale R/Cp = 0,2857, où R est la constante des gaz pour l'air et Cp, la chaleur massique de l'air à pression constante).

Spanish

Campo(s) temático(s)
  • Previsiones meteorológicas, medición y análisis de datos
  • Termodinámica
DEF

Diagrama termodinámico cuyas coordenadas cartesianas son la temperatura potencial y px (p = presión; x = R/Cp = 0,2857, donde R es la constante de los gases para el aire y Cp, el calor específico del aire a presión constante).

Save record 4

Record 5 1997-03-14

English

Subject field(s)
  • Fluid Mechanics and Hydraulics (Physics)
  • Demolition (Military)
CONT

The potential energy in the recompressed gases then causes the gas to expand again, and this new impact against the surrounding water causes a second pressure wave similar to the first. These successive pressure waves are called bubble pulses.

French

Domaine(s)
  • Mécanique des fluides et hydraulique (Physique)
  • Destruction (Militaire)

Spanish

Save record 5

Record 6 1996-03-08

English

Subject field(s)
  • Analytical Chemistry
CONT

Thermionic or Electron Impact Detector. In 1957, Ryce and Bryce described a sensitive ionization gauge based on the ionization potentials of vapors. It comprised a filament, a grid, and a plate. The potential difference between the filament and grid accelerated electrons which may ionize any gas in their path. If the grid potential is maintained at a level insufficient to ionize the helium carrier gas... no current flows in the plate circuit. If a potential difference of 18 V is maintained between the filament and the grid, compounds of lower ionization potential in the helium will be ionized and the positive ions produced will yield a cathode current, the current noted being a measure of the ion concentration. Into the modified ionizing chamber, operated at reduced pressure, a small fraction of the column effluent gas stream(less than 0. 5%) was allowed to flow into the gauge through a controlled leak. Over a 0. 02-l. 5 mm Hg pressure range, the sensitivity was approximately proportional to the pressure, and sensitivities in the range of 10[ minus superscript 12] mole were claimed.

French

Domaine(s)
  • Chimie analytique

Spanish

Save record 6

Record 7 1989-08-15

English

Subject field(s)
  • Hydrology and Hydrography
  • Soil Mechanics (Engineering)
DEF

The pressure(positive or negative), in relation to the external gas pressure on the soil water, to which a solution identical in composition with the soil water must be subjected in order to be in equilibrium through a porous permeable wall with the soil water. It may be identified with the matric potential....

French

Domaine(s)
  • Hydrologie et hydrographie
  • Mécanique des sols
DEF

Pression positive ou négative (tension), par rapport à la pression extérieure des gaz sur l'eau du sol, qu'il faut exercer sur une solution de même composition que l'eau du sol pour que la solution soit en équilibre avec l'eau du sol, à travers une membrane poreuse perméable. Elle peut correspondre au potentiel capillaire (de matrice) (...)

Spanish

Save record 7

Record 8 1982-08-10

English

Subject field(s)
  • Metrology and Units of Measure
  • Electrolysis (Electrokinetics)
  • Analytical Chemistry
CONT

... the potential of the standard hydrogen-gas electrode is arbitrarily assigned a value of zero, and all other electrode potentials are expressed in terms relative to the hydrogen electrode. The standard hydrogen electrode is one in which the hydrogen gas has a pressure of 1 atm and the hydrogen ions are at unit activity.

French

Domaine(s)
  • Unités de mesure et métrologie
  • Électrolyse (Électrocinétique)
  • Chimie analytique
CONT

L'une est une électrode normale à hydrogène, électrode de référence (...). L'autre, électrode indicatrice, est aussi une électrode à hydrogène, mais dont la solution est de pH inconnu, à mesurer. (...) mais on a convenu que l'électrode normale à hydrogène est équipotentielle; d'où E0 = 0 (...)

OBS

Une électrode normale ou étalon peut servir, et c'est généralement le cas, d'électrode de référence. Mais il s'agit bien de deux notions distinctes. On les confond évidemment très souvent.

OBS

"Normal" a ici le sens de "qui a fait l'objet d'une normalisation". On a, sur le même modèle, les synonymes "potentiel normal" et "potentiel standard" ainsi que les synonymes "solution-étalon" et "solution normale".

Spanish

Save record 8

Record 9 1980-06-11

English

Subject field(s)
  • Soil Science
OBS

This potential component is to be considered only when external gas pressure differs from atmospheric pressure as in a pressure membrane apparatus. A specific term and definition are not given.

French

Domaine(s)
  • Science du sol
OBS

Il n'est tenu compte de cette composante du potentiel total que lorsque la pression extérieure des gaz diffère de la pression atmosphérique comme, par exemple, dans un tensiomètre à membrane. Aucun terme et aucune définition spécifiques ne sont donnés pour ce potentiel.

Spanish

Save record 9

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