Enhanced Heavy Oil Recovery

All topics related to EOR like CO2, Thermal hydrocarbon Recovery, WAG, SAGD, Microbial, Polymer flooding ....etc

Moderator: moderators

Post Reply
dolatitv
Posts: 27
Joined: Fri Mar 02, 2012 1:32 pm

Enhanced Heavy Oil Recovery

Post by dolatitv »

Thermal Techniques
--Cyclic Steam Stimulation (CSS)
--Steam Flooding
--Huff and Puff
--Steam Assisted Gravity Drainage (SAGD)
--Hot Water Flooding
--In-Situ Combustion
--Electro-thermal Heating
--Hot solvent injection

Non-Thermal Techniques
*Chemical Flooding
--Polymer Flooding
--Surfactant Flooding
--Alkaline Flooding
*Miscible Displacements
--Enriched Gas Drive
--Vaporizing Gas Drive
--Alcohol Flooding
--Carbon Dioxide Flooding
--Nitrogen Flooding

*Gas Drives
--Inert Gas
--Flue Gas
--Immiscible Carbon Dioxide
--Immiscible HC
--(Vapor Extraction) VAPEX

Other Techniques
--Mining
--Cold Heavy Oil Production from Sands (CHOPS)
--Microbial Techniques
dolatitv
Posts: 27
Joined: Fri Mar 02, 2012 1:32 pm

Re:Steam flooding

Post by dolatitv »

Description
Consists of injecting ± 80% quality steam to displace oil
Normal practice is to precede & accompany steam drive by cyclic steam stimulation of producing wells (called huff and puff)
Mechanisms That Improve Recovery Efficiency
Viscosity reduction / steam distillation
Supplies pressure to drive oil to producing well
Challenges
Adverse mobility ratio & channeling of steam

Limitations
Applicable to viscous oils in massive, high permeability sandstones or unconsolidated sands
Oil saturations must be high & pay zones should be > 20 ft thick to minimize heat losses to adjacent formations
Less viscous crude oils can be steam flooded if they don’t respond to water
Steam flooded reservoirs should be as shallow as possible because of excessive wellbore heat losses
Not normally done in carbonate reservoirs
Since about 1/3 of additional oil recovered is consumed to generate required steam, cost per incremental barrel of oil is high
Low percentage of water-sensitive clays is desired for good injectivity
You do not have the required permissions to view the files attached to this post.
User avatar
FANARCO
Administrator
Administrator
Posts: 2063
Joined: Mon Jul 10, 2006 9:56 pm
Contact:

Re: Re:Steam flooding

Post by FANARCO »

dolatitv wrote:Description
Consists of injecting ± 80% quality steam to displace oil
Normal practice is to precede & accompany steam drive by cyclic steam stimulation of producing wells (called huff and puff)
Mechanisms That Improve Recovery Efficiency
Viscosity reduction / steam distillation
Supplies pressure to drive oil to producing well
Challenges
Adverse mobility ratio & channeling of steam

Limitations
Applicable to viscous oils in massive, high permeability sandstones or unconsolidated sands
Oil saturations must be high & pay zones should be > 20 ft thick to minimize heat losses to adjacent formations
Less viscous crude oils can be steam flooded if they don’t respond to water
Steam flooded reservoirs should be as shallow as possible because of excessive wellbore heat losses
Not normally done in carbonate reservoirs
Since about 1/3 of additional oil recovered is consumed to generate required steam, cost per incremental barrel of oil is high
Low percentage of water-sensitive clays is desired for good injectivity

Is this type SAGD
Post Reply