Filed operation of a CO2 flood
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Transcript of Filed operation of a CO2 flood
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7/24/2019 Filed operation of a CO2 flood
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4-Jan-06 1TRIMERIC CORPORATION
www.trimeric.com
Ken McIntush, 830 643 4553, [email protected]
Kevin Fisher, 512 431 6323, [email protected]
Joe Lundeen, 512 658 6313, [email protected]
Presented by Joe Lundeen
TRIMERIC CORPORATION
Field Operations of aCO2 Flood
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Outline EOR Operations Overview
Unique CO2 Characteristics Production Facility Discussion
Process Equipment Highlights
Operational Considerations
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Gas/Oil
Separation SRU Dehydration
NGLRecovery
SRU$ Oil $
$ NGL $
CO2
PurchasedCO2
Production Injection
$ Residue (Sales Gas) $
Gas Processing Steps at
Production Facility
Gas processing stepsdepend on OIL qualities
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EOR Upstream Operations Overview CO2 Source
Naturally Occurring Reservoir
Industrial Source
Gas Processing Dehydration
Liquid Desiccant Process Solid Desiccant Process
Contaminant Removal
EOR CO2 (limited)
Food-grade CO2 (complete)
Transportation Pipeline / Truck / Rail
Meter Facility
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Primary EOR Operations Overview EOR Production Facility (Oil/Gas)
CO2 Recycle
Gas / Liquid / Liquid Separation
Oil Recovery
CO2 Recycle / Compression
NGL Recovery Residue gas cleanup
Injection wells Compress / pump CO2 into formation
Production wells Flow into test facility
Use of corrosion inhibitors common
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CO2 Characteristics Exists as gas, liquid, and dense phase at
EOR conditions Critical pressure: 1,070 psia
Water solubility in CO2 has a V-shape,
minimum occurs at ~850 psi Some compounds (glycol, glycerol, etc.)
have higher solubility in CO2 at lower
temps Acts similar to a solvent in the reservoir,
good affinity for hydrocarbon
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Production Facility Complexity Permian Basin CO2 Flood
Light crude oil
Recycle CO2 has significant HCs
Lighter HCs are soluble in CO2 More gas processing required
NGL recovery (Ryan-Holmes, Refrigeration, etc.) Residue gas clean-up (CO2, H2S, N2, etc.)
Mississippi CO2 Flood
Heavy crude oil
Recycle CO2 has only about 5% methane
Main facility operations consist of separation andcompression
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EOR Production Flow Diagram
Production /
CO2 Response
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Process Equipment Highlights All process equipment is common to NG industry
There is often a choice of compression or pumping CO2 to
pressure when super-critical Recycle gas is typically compression Pumps are preferred if CO2 is a dense gas submersible or PD type
(i.e., triplex)
Vents from low pressure separators may require vapor recovery
Dehydration process choice will depend on requirement to removeNGLs
Common CO2 metering methods are orifice plate and coriolismeters; if orifice plate, very important to know fluid propertiesaccurately
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Operational Considerations
Industry and Field Observations Effect of supercritical CO2 on operations
Phase change on level instrumentation Water solubility Solubility of compounds (i.e., glycol)
Material selection Corrosion inhibitors SS vs. CS vs. coatings
Dehydration methods Liquid and solid desiccants Compression from intermediate pressure (i.e., 850 psig)
Emulsions in the produced oil Possibly due to presence of corrosion inhibitors
Heat added to break emulsions Health & Safety Hazards
Heavier than air Suffocates or asphyxiates at lower concentrations than other
asphyxiants (more dangerous than other asphyxiants)
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Questions_____________________________
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