| Standardization field | Non-metallic materials |
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| Technical committee | BAS/TC 11- Petroleum and petroleum products |
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| Term (EN) | enhanced oil recovery, secondary recovery |
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| Definition (EN) | methods by which the ultimate oil recovery from a
reservoir is increased beyond the recovery achieved by
means of the natural forces acting in the reservoir rock
NOTE It is possible to distinguish between
conventional: injection of water or gas to increase the
ultimate oil recovery from a reservoir beyond that
achieved by means of the natural forces acting in the
reservoir rock (fluid/rock expansion, solution gas drive,
gas cap expansion, water drive, gravity).
enhanced: methods to increase the ultimate oil recovery
beyond that achievable with primary or conventional secondary means by improving sweep efficiency,
increasing displacement efficiency, and/or for heavy oils
by reducing oil viscosity.
Usual methods of enhanced recovery include:
a) miscible gas injection;
b) injection of chemicals (surfactants, polymers, etc);
c) thermal methods, which consist of injection of steam
or hot water, or partial burning of the crude (in situ
combustion). |
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| Term (FR) | |
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| Definition (FR) | |
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| Term (DE) | |
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| Definition (DE) | |
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| Term (BS) | povećani iscrpak nafte, sekundarni iscrpak |
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| Definition (BS) | metode kojima se krajnji iscrpak nafte iz ležišta
povećava iznad onog postignutog prirodnim silama
koje djeluju u ležišnim stijenama.
NAPOMENA Moguće je napraviti razliku između metoda
konvencionalnih: utiskivanje vode ili plina radi povećanja
krajnjeg iscrpka nafte iz ležišta iznad onog postignutog
posredstvom prirodnih sila koje djeluju u ležišnim stijenama
(širenje plina u stijenama, širenje otopljenog plina, širenje
slobodnog plina, istiskivanje pritiskom vode, gravitacija).
poboljšanih: metode za povećavanje krajnjeg iscrpka
nafte iznad onog postignutog primarnim ili konvencionalno sekundarnim načinom, putem povećanja
efikasnosti istiskivanja i/ili, za teške nafte, putem
smanjenja viskoziteta.
Uobičajene metode povećanja iscrpka uključuju:
a) injektiranje rastvorljivog plina;
b) injektiranje hemikalija (površinsko-aktivne tvari,
polimeri, itd.);
c) termalne metode, koje se sastoje od injektiranja pare
ili vrele vode, ili djelimičnog sagorijevanja nafte (in situ
sagorijevanje). |
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| Term (HR) | |
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| Definition (HR) | |
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| Term (SR) | |
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| Definition (SR) | |
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| Date | 2016-03-01 |
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| Standards | BAS ISO 1998-3:2000 |
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